Service Manual - Load Sensing

Service-Manual Crane control Load Sensing with LICCON Electro-hydraulic regulation

slewing

telescoping

hoisting

luffing

oil pressure supply

Control block LS

Liccon

LS-pressure

var. displ. pump/s

P-pressure

899516108

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Table of contents Simplified functional diagram .......................................................................................... 4 General fundamentals on the electro-hydr. Load-Sensing system .................................. 5 Principal diagram of the entire function (example: LTM 1080/1) ..................................... 6 Functional principal - Load Sensing with Liccon crane control ........................................ 7 Principal diagram on the activation of the variable displacement pump/s (Liebherr) ...... 8 Description of the activation of the variable displacement pump/s (Liebherr) ................. 9 Principal diagram on the activation of the valve units (Barmag/Bucher) ....................... 10 Description of the activation of the valve units (Barmag/Bucher) .................................. 11 Principal diagram on the Liccon Load-Sensing regulation (Liebherr) ............................ 12 Description of the Liccon Load-Sensing regulation (Liebherr) ...................................... 13 Description (fundamentals) of the Load-Sensing regulator (Liccon-ZE 2)..................... 15 Test and adjustment of LS control (only LTM 1090/2 and 1120/1) Flow diagram on test sequence, basic adjustment / initial current pumps .................... 27 Checking and adjusting Diesel engine idling speed ...................................................... 28 Checking pressure sensors (DA) „P and LS“ values .................................................... 28 Checking mechanic pump zero position (Q-min) .......................................................... 29 Checking control oil pressure supply ............................................................................. 29 Checking/adjusting basic adjustment pump regulator ................................................... 30 Checking/adjusting initial current pump regulation (P1/P2) ........................................... 31 Flow diagram on test sequence, final current pump variation ....................................... 33 Checking/adjusting final current pump regulation (P1/P2) ............................................ 34 Procedure for modification of initial and final currents .................................................. 36 Short instructions for manual test and adjustment on crane types LTM 1055/1, 1060/2, 1080/1, 1090/2, 1090/3, 1100/2, 1120/1 and 1150/1 Test and adjustment insructions for LS control ............................................................. 39 Outline on adjustment/setting values on LS pums and LS control blocks Adjustment/setting values on LS pump and LS control block on the LTM 1055/1 ........ 45 Adjustment/setting values on LS pump and LS control block on the LTM 1060/2 ........ 50 Adjustment/setting values on LS pump and LS control block on the LTM 1080/1 ........ 55 Adjustment/setting values on LS pump and LS control block on the LTM 1090/2 ........ 60 Adjustment/setting values on LS pump and LS control block on the LTM 1090/3 ........ 65 Adjustment/setting values on LS pump and LS control block on the LTM 1100/2 ......... 70 Adjustment/setting values on LS pump and LS control block on the LTM 1120/1 ......... 75 Adjustm./set. values on LS pump and control block on the LTM 1120/1, from Muli 20 .. 80 Adjustment/setting values on LS pump and control block block on the LTM 1150/1 ..... 85 Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Table of contents LS Control, autom., checking-adjusting by setting programs Setting assistance for the LTM 1090/3 .......................................................................... 91 Description of hydraulic pumps Set up and function - double variable displacement pump LPVD 100 EL/DA ............. 109 Set up and function - variable displacement pump LPV 140 (only LTM 1055/1) ......... 113 Set up and function - variable displacement pump A11 V0 (only LTM 1060/2) ........... 121 Outline on Load-Sensing (LS) control blocks ........................................................ 125 LS control block (Bucher/Barmag) on the LTM 1055/2 ............................................... 126 LS control block (Rexroth) on the LTM 1060/2 ............................................................ 128 LS control block (Bucher/Barmag) on the LTM 1080/1 ............................................... 130 LS control block (Bucher/Barmag) on the LTM 1090/2 ............................................... 132 LS control block (Bucher/Barmag) on the LTM 1090/3 ............................................... 134 LS control block (Bucher/Barmag) on the LTM 1100/2 ................................................ 136 LS control block (Bucher/Barmag) on the LTM 1120/1 ................................................ 138 LS control block (Bucher/Barmag) on the LTM 1120/1 ................................................ 140

Edition: Juli 2004

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / july-2004

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electriic connection working pressure LS - pressure signal P - pressure signal P - pressure

distribution valve block

shuttle valves

crane functions

pressure sensor P

pressure sensor LS

Liccon control

master switch

variable displacement pump(s))

monitor

Crane control - LICCON / Load Sensing

OW10 Electro-hydraulic regulation Electro-hydraulic „Load-Sensing system“

Simplified representation:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Electro-hydraulic „Load-Sensing system“ General fundamentals On the electro-hydraulic Load-Sensing system, the variable displacement pump and the distributing valve block are activated or regulated electronically by the LICCON control. The electronically regulated Load-Sensing control has the function, to maintain a fixed (programmed) pressure difference ∆ p of e.g. 20 or. 40 bar (subject to the version) between pump pressure (P) and load pressure (LS) constant as far as possible. For the acquisition of both pressures a pressure sensor is installed into the P- circuit and a pressure sensor into the LS-circuit and electrically connected with the LICCON control. The pump pressure (P) is acquired before the distributing valve and the load pressure (LS) after the distributing valve (with the highest load pressure) in the control block. LICCON control and pump ensure an e.g. 20 bar differential pressures before Process: the valve block. The feeding volume of the pump is controlled continuously by the pressure difference ∆ p and regulated by the LICCON control. This means:

P = 20bar LS = 0bar (at none activated working movement)

pressure sensor LS distributing valve

pressure sensor P

sectional pressure balance

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / july-2004

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-Y5

-Y10

-Y6a

-Y1a

-Y4a

electric control

M-LS

-B12

-Y3

M-P1

-B11

- Y49

control line telesc. ram „retracting“ control line lowering brake

working line telesc. ram and release of telesc. sections

-Y6b

-Y1b

control bloc LS

-S 49

hoist winch

-Y4b

pump pressure line control pressure line load signal line

lowering brake valve

pressure sensor (-B2)

luffing ram

Elemetary diagramm

M-P

pump 1

pump 2

gear pump

-Y106

Variable displ.. pump Liebherr-LPVD 100

-Y105

central units

working line telesc. ram „out“, hoist gear„lowering“ working line telesc. ram „in“, hoist gear „lifting“,luffing ram „extension“

M-A2

-Y38

telesc. ram

Crane control (example: LTM 1080/1) with electrohydr. Load Sensing System

Crane control - LICCON / Load Sensing

OW10 Electro-hydraulic regulation

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Electro-hydraulic „Load-Sensing system“ Functional principle of the Load Sensing System with LICCON control At the load sensing system, the Liebherr variable displacement pumps (LPVD) and the Barmag directional valves are activated or controlled by the Liccon control (ZE 2). The Liccon control takes place via an electron. controller (on CU 2) dependent on the control signals of the master switches and on the actual service condition signals such as pump pressure, load pressure signal and engine speed. The control of the proportional directional control valves on the valve units is performed within the first controller circuit, while the control of the proportional pressure regulators on the variable displacement pumps takes place within the second controller circuit (see also description of the block diagram, load sensing controllers). In case of the load sensing system, the load pressure signal (consumer with the highest load) is transmitted by a load pressure sensor (LS), via the Liccon control, to the control valves of the pumps. This ensures the control of the pump variation angles to adapt the feeding flow to the requirement of the consumers via the respective directional control valves and to maintain the pressure difference necessary on the pilot pistons of the directional control valves. The service pressure adapts itself automatically to the load pressure during that process. When the maximum service pressure (of a function) is attained, the feeding flow to the consumer with the highest working pressure is limited by a pressure relief valve in conjunction with a sectional pressure balance (see description, directional control valves Barmag). If the feeding volume necessary is not attained during the control of various consumers, the pilot piston or the directional control valve of the fastest working motion is reset automatically by the Liccon control. In order to guarantee a load-independent control of the consumers, a sectional pressure balance (inflow pressure balance) is connected with each directional control valve. The pressure balance piston retains the balance or the pressure difference of the consumer pressure and the pump pressure on the corresponding pressure balance. That ensures that even the consumer with the highest load pressure is supplied with oil, or it prevents that not only consumers with low load pressure (reduced resistance) are supplied with oil. For more details, refer to description valve units (Barmag).

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Elementary diagram for control of the double variable displacement pump LPVD example: on LTM 1080/1

Inductive electron. pressure pressure sensor controller sensor sensor engine „LS“ (ZE2) „P“ speed

Sitzkontakt Schalter

control dir. contr. valves

control pump

Liccon central unit

load pressure signal (LS) pump pressure signal (P1,P2)

M-Px (120bar)

Ma2

control valve pump 2 (-Y106)

4 A1

A2

7 Fa

2 1

Ma1

M-Px 45bar (100bar)

P

control valve Pump 1 (-Y105)

3

M-P

Filter Hydr. diagram for Pos. 3

P1 10 BAR

P2

NORMALBETRIEB

=D+D2 -Y38

A

NOTBETRIEB A3 PUMPE 1

A2

A1

PUMPE 2

2

P V6

=F+F3-Y105

V8

=F+F3-Y106

3 bar

V2

105 bar

V7

30 bar 45 bar

M-P

Ma2

Ma1

V1

V5

100 bar

7

A2

T2

T1

A1

355 bar

355 bar

Fa T5

4

S

Hydr. diagram for Pos. 1 Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

M-Px (45 bar)

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Filter

1 double var. displ. pump (Liebherr - LPVD) 2 control pump 3 valve block contr. pressure 4 pressure relief valve (45 bar)

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Electro-hydraulic „Load-Sensing system“ Description of the control – variable displacement pumps (1+2) The pressure control valves on the pumps 1+2 control proportionally to the electr. control, the control pressure (pump variation pressure) applied to the pressure control valves (-y31/-y32). The supply of the control pressure is realized by a separate control pressure pump (Px = approx. 45 bar) during idling of the pump (control valves without current) and minimum variation position of the pump (electr. control approx. 200 – 220 mA). In case of a pressure build-up in the P line (pump 1 / 2) above approx. 45 bar, the control pressure oil circuit (pump control pressure) is fed by pump pressure oil circuit (P1/P2). The pump control pressure can be tested at measuring point ”Ma1” (pump 1) and ”Ma2” (pump 2). Note: a)The variable displacement pumps deliver (at idling speed and electrically non controlled) a circulation pressure of approx. 4 -8 bar to compensate for the overflow oil volume. b)At the start of the Diesel engine (= control ON), the variable displacement pumps (P1/ P2) are activated by means of the Liccon control with approx. 180 mA which increases the pump circulation pressure to approx. 14 - 18 bar. c) Further details in respect to the double variable displacement pump LVD – see separate description.

Outline on pump regulation (delta-p) on the LTM 1090/2: • from crane no. 1, the pressure difference (delta-p) is = 40 bar • from crane series 60 (from crane no. 025064), the pressure difference (delta-p) is = 20 bar on the LTM 1120/1: • from crane no. 1, the pressure difference (delta-p) is = 40 bar • from crane series 25 (from crane no. 023733), the pressure difference (delta-p) is = 20 bar on crane types - LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 • always from crane no. 1, the pressure difference (delta-p) is = 20 bar

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Elementary diagram for control of the valve units (dir. control valves Barmag)

control pump

Sitzkontakt Schalter

control dir. contr. valves

Inductive electron. pressure pressure sensor controller sensor sensor engine „LS“ (ZE2) „P“ speed

Liccon central unit

pump pressure signal (P1,P2)

load pressure signal (LS)

B3

OUT

Aus

IN

DUE 3 1.2

A

B

b

IN

305 bar

A2

DOWN

UP

B1 T

luffing UP

T

a

DUE 2 0,4

M-LS

=D+D2 -B11 P =

=D+D2 -B12 P =

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

UP

P1

T1

XL

Y2 X

DUE Z 1.2

360 bar

DUE P 1.2

300 bar

A1

DUE 4 1.2

T

DOWN

DUE 3 1.2

UP

P

Auf

=D+D2 -Y4a

a

A

B

b

140 bar

Auf Ab

DUE 5 1.2

=D2+D2 -Y1a =D+D2 -Y4b

DUE 4 1.2

P

a

UP

hoist winch UP

DOWN

B2

telescoping extension

310 bar

A3

DUE 4 DUE 5 1.2 1.2 145 bar

Ein Ab

OUT

T

=D+D2 -Y6a =D+D2 -Y1b

a

P

A

DUE 3 1.2

B

T

b

=D+D2 -Y6b

P2

M-P

P1 - 10 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Functional description of valve units (Barmag) - hoist gear, luffing and telescoping Description of pilot control of directional control valves The pilot control is performed by proportional valves (M1/M2) which are triggered by the programmed LICCON system. The LICCON control depends on the control signals of the master switches and the message ”actual operating condition” (pump pressure, load pressure signal, engine speed). Note: When initiating a working motion, the electr. control signal to the directional control valve M1 or M2 (pilot piston -1- will be extended) precedes the control signal to the pump.The control pressure (max. 320 bar) for actuation of the directional control valve is taken from the P line of the double variable displacement pump (e.g. LPVD 140). In the neutral position of the pilot piston (6), the load signal line (5) to the reservoir is relieved. Description of the control of the valve units (working pressure) 1. Working position – individual mode The actuation of the pilot piston (6) of a valve unit (section) results in the emission of the load pressure signal (5) to the sectional pressure balance (3) and via a shuttle valve chain (4) to the pressure sensor (LS) which transmits the load signal ”LS”, via the Liccon control, to the proportional control valves of the variable displacement pumps (P1/P2) (see also block diagram, load sensing controller). The volume flow of the pump working pressure increases at the opened profile section (2) of pilot piston (6) until the differential pressure (Dp = approx. 40 bar or 20 bar) set by the Liccon control, is attained between the load pressure (LS) and the pump pressure (P).

2. Working position – parallel mode When activating additional or simultaneous actuation of various pilot pistons (6), the ”LS” pressure sensor receives the signal of the highest load pressure via the shuttle valve chain (4) and the pump pressure attains the respective value. The pressure difference between the pump pressure and the lower working pressures of the remaining sections is compensated by the assigned pressure balances (3). Example of control: In case of the represented functions (principle diagram), the following functions are triggered: Luffing, hoist winch UP and boom extension. The load signal is given by function ”boom extension”.

Set-up - valve unit (Barmag) M1 M2 1 1.1 2 3 4 5 6 7

dir. control valve (prop.) dir. control valve (prop.) pilot piston emergency pin flow profile section sectional pressure balance shuttle valve (chain) load pressure signal (LS) main control piston (dir. contr. valve) working pressure limiter valve

Legend: pump pressure control pressure (control piston – dir. contr. valve)

1 M1

1.1 3 4

7 5

6

load pressure signal working pressure tank runback Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

M2

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Elem. diagram - electron. control of the var. displ. pumps and dir. contr. valves Block diagram: load sensing controller Electron. controller for the control of the proportional dir. control valves on the var. displ. pumps and valve units

2V

2V

10 V

10 V

2V 10 V

LICCON - ZE 2 +

A B

Incr.

corr. - VG min (Hg↑)

engine speed LMB telescope length

standardized

key C (ABB)

standardized

key C

standardized

key C ↑) (ABB-↑

luffing ram

LS

P

P - LS

Q (VG) selection

Q (VG) selection

Q (VG) selection

∆P

summated output regulator

P I

DWO.

0..100% 50%

integration initial and final current V-1

progrssion of P1 control variable displ. pump 0%

integration initial and final current V-2

P2 50%

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

integration initial and final current

integration initial and final current

integration initial and final current

lowering brake

load signal „LS“ (max. working pressure)

100%

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Mode of operation of the electronic load sensing control Due to their feed flow and pressure adaptation, load sensing systems offer essential energetic advantages compared to conventional drive systems which become particularly noticeable during idle running, within the partial load and the overpressure range. A further advantage of the load sensing system is also the independence of the feed flow from the speed which is controlled by an electronic summation controller and equally the electron. differential pressure control. The control system is preset to a differential pressure (∆p) of 20 bar (40 bar). i.e. the pump pressure should always be higher by approx. 20 bar or 40 bar (only LTM 1090/2 und 1120/1) than the highest load pressure signalized. The electron. load sensing controller gets into operation when the sum of the consumer volumes starts to exceed the pump feeding volume available. In that case, the oil volume for the consumers is regulated by means of the load signal (LS) and the electronic load sensing control to ensure that the variable diplacement pumps (P1/P2) provide the oil volume required by respective control of the pump control valves. The difference pressure regulation (∆p of 20 bar) becomes active only when a function is activated by the displacement of the master switches. On LTM 1090/2 and 1120/1 the difference pressure regulation is active after the activation of the seat contact or dead man’s button. Note: The regulating performance of the pump control can be checked within the Liccon test system on the special picture for data word 64 (DW0.64) ”pump control P I – portion”. The pump control valves are controlled, via the solenoid final stages, to ensure that pump 1 covers the oil volume required of 0-50%, and pump 2 of 50-100%. Moreover, the control of the pump control valves and directional solenoid valves (valve units) is effected additionally by a summation controller (Red-factor). Note: The electrical control of the prop. control valves can be inspected or modified within the Liccon test system on the special picture for ”pumps, currents, modi, correctionvalues” (see also seperate instructions „Liccon test system“)! Control of the proport. direction. control valves on valve units (Ww/Hw/Tw) = (luffing/hoist/telesc.) The control of the individual functions (Ww/Hw or Tw) is performed by the displacement of the respective master switch (MS). The MS signal (2-10 V) is adapted to the preset oil volume (VG) depending on the speed adjustment by means of the C key and the high-speed activation (yes or no). At activated function – work area limitation (ABB) -, the control functions of ”Ww-up/down” and ”Tw- extending” are additionally effected. A further effect on the MS signal for the initial current ”Hw hoisting” is realized by a hoist winch counter (incremental sensor/operand factor, corr. – VG min = overflow oil compensation). At normal output requirement (output regulator not activated), the dir. control valves are controlled directly via the solenoid final stages, and in case of high output requirement (output regulator activated) via the summation regulator. Note: The electrical control of the prop. dir. control valves can be inspected or modified within the Liccon test system on special picture for ”luffing, currents, correction values” and ”winch, currents, correction values” and ”telescoping, currents, correction values”. - adjustment insructions for LS control. Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator The electric load-sensing regulation is a feature of the cranes LTM 1055/1, 1060/2, 1080/1, 1090/2, 1090/3, 1100/1, 1120/1 and 1150/1. During the development phase of the individual cranes, the regulation has been optimized and adapted to the individual types of pumps and distributing valve blocks. The following description deals, in a general manner, with the electric regulators of the LTM 1090/2 and LTM 1120/1 respectively.

Crane electrics and LS regulation B

A

SENSORS

MASTER SWITCHES

•speed sensor engine •pressure sensor load pressure

C

•pressure sensor pump pressure

LICCON

•pressure sensor luffing ram •incremental sensor winch

CENTRAL UNIT

D

E

PUMPS 1/2

CONSUMERS

Crane hydraulics

inwinch pluffing ram

nengine

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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slew. gear

telescoping

hoist gear

luffing gear

„LS“

control/ supply

„P“

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Load-Sensing Regulation

A

MASTER SWITCHES 2V

2V

10 V

10 V

2V 10 V

+ B SENSOR

incr.

A B

C

LICCON - ZE 2

1

2

1

1

2

1

1

2

1

corr. - VG min (HwÇ) 4 3

3

3

normaliz. C - key (ABB)

normaliz. C - key

normaliz. C - key (ABB-Ç)

1a

1a

1a

engine speed LMB tele length

5

5 Q (VG) input

to Pos. 7

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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5 Q (VG) input

Q (VG) input

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Control of the consumers What’s the difference between a control and a regulation? Control: With respect to the control, an input signal is processed and converted to a consumer.

1

1a

input signal

control specified value

consumer

Regulation: With respect to the regulaion, an input signal is processed and a specified value given to the consumer. The actual value is fed back by the consumer and, in case of a deviation from the spec. value, the signal is corrected.

input signal

control/ regulation actual value

specified value

consumer

Input of the „zero contact“ switches At a minor displacement of the master switch, a zero contact (switch) is closed and defines the displacement direction of the master switch and thus the crane motion. Symbolic representation of the „zero contact“ switches For a better representation, the zero contact switch, being normally located in the master switch, is shown here in the central unit.

2

Input of the ZE (CU) The degree of the displacement of the master switch is entered into the control by a voltage signal of 2-10 V.

3

C-Program: The c-program (control parameter program = CPP) or the working area limitation = ABB permits the reduction of the final speeds of the crane motions. The input signal of 2-10V is reduced corresponding to the percental speed selection. The signal can be increased by the high-speed preselection (rabbit symbol).

4

Correction value HW (HG) lifting If a reverse motion of the winch is noticeable on the incremental sensor at a minor control of HW (HG) lifting, the input of the oil volume is increased by a correction in order to retroact the reverse motion of the winch. Cause: Wear of the motor, increase of leakage oil, larger oil volume required.

5

Preliminary oil volume preselection for the consumer: Dependent on the correction values mentioned under (3) and (4), a preliminary oil volume preselection is calculated resulting from the master switch signal.

Note: No pump current is required at WW (LG) down, i.e. a required value for the pump is not preselected, but the signal is transmitted unaffectedly to the output module of the ZE (CU). Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Load-Sensing Regulation

A

MASTER SWITCHES 2V 10 V

2V 10 V

2V 10 V

+ B SENSOR

incr.

A B

C

LICCON - ZE 2

1

2

1

1

2

1

1

2

1

corr. - VG min (HwÇ) 4 3

3

3

normaliz. C - key (ABB)

normaliz. C - key

normaliz. C - key (ABB-Ç)

1a

1a

1a

engine speed LMB tele length

5

5

5

Q (VG) input

Q (VG) input

Q (VG) input

init. current. final current integration

init. current final current integration

init. current final curent integration

summation capacity regulator 18

6

7

8

lower. brake.

E

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

CONSUMERS - 18 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Control of the consumers

6 Multiplying modules (consumers): The individual oil volume inputs of the crane motions are fed into multiplying modules. Dependent on the summation capacity regulator (18), that signal is routed unaffectedly or reduced by a factor (factor = 0 - 1).

7 Output modules: In the output modules, the individual signals, dependent on shape, are time-delayed, jerky displacements of the master switch are damped (Integration). Conversion of the signals in the output modules: output signal

input signal

100 %

100 %

Integrating (integration)

time (t)

time (t)

Moreover, for the adjustment of the control, the different properties of the components must be taken into consideration. The initial and final currents are individually adjusted in accordance with the tolerance and characteristic of the specific component. Those modifications of the initial and final currents are taken into consideration at the control of the consumers. 8 Distributing valves (consumers): The distributing valves are controlled via the outputs according to the resultant currents.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation A

Load-SensingRegulator

MASTER SWITCHES 2V

2V

10 V

10 V

2V 10 V

+ B SEN-

C

LICCON - ZE 2

1

SORS incr.

A B

2

1

1

2

1

1

2

1

corr. - VG min (HwÇ) 4 LMB tele length

3

3

3

normaliz. C - key (ABB)

normaliz. C - key

normaliz. C - key (ABB-Ç)

1a

1a

1a

5

5

5

Q (VG) input

Q (VG) input

init. current final current integration

init. current final current integration

Q (VG) input

9

summation capacity regulator 18

6

10 0..100% 50%

init. current init. current 11 final current final current integration iIntegration x2

7

init. current final current integration

100%

12

D

8

PUMPS 1 AND 2

lower. brake

E

CONSUMERS load signal „LS“ (maximum working pressure) Ð

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Control of the pump 9 Oil volume summator: The individual oil volume inputs (WW up, HW up/down, TW out/in) are totalized. The signal flows into the summation capacity regulator(18) and into the multiplying module (10) for the control of the pump regulation valves. 10 Multiplying module (pump regulation valves): The input of the total oil volumes of the individual crane motions is modified in the multiplying module by the correction factor of the summation capacity regulator(18). The output generates a signal of 0 - 100%. That calculated required volume is fed directly into the output module(11) for the pump regulation valve 1. For the control of pump regulation valve 2, a reduction by 50% takes place. (see example item (12)) 11 Output modules for pump regulation valves: The input signal is increased by the factor 2 (x2) in each output module. The output module for the control of pump regulation valve 1 is limited to 100% by a window. (regulation process solution) 12 Variable displacement pumps with regulation valves: Pump 1 and pump 2 deliver at max. opening angle a total oil volume of 100%. Pump 1 takes initially the portion of 0 - 50%, and pump 2, if required, the rest of 50 - 100%. In case of a requirement of e.g. 75%, pump 1 is set inititally to the opening angle of 100% and, subsequently, pump 2 to 50 %.

Example: total oil volume Qtotal

100%

75%

50% 25%

control pump 1 I1 partial oil flow Q1

T 100%

time (t)

1234567890123 1234567890123

final current limitation

75%

50% 25%

A further representation in respect to the control of the pump regulation valves and oil volumes is shown on the last page (p.12).

control pump 2 I2 partial oil flow Q2

time (t)

T1 100%

75%

50% 25%

T2 Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 21 -

time (t)

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation A

Load-Sensing Regulation

MASTER SWITCHES 2V

2V

10 V

10 V

2V 10 V

+ B SEN-

C

LICCON - ZE 2

1

SORS A B

incr.

2

1

1

2

1

1

2

1

corr. - VG min (HwÇ) 4 LMB tele length

LS

13

3

3

normaliz. C - key

normaliz. C - key (ABB-Ç)

1a

1a

1a

5

LS - P

P

3 normaliz. C - key (ABB)

14

5

5

Q (VG) input

Q (VG) input

Q (VG) input

init. current final current integration

init. current final current integration

init. current final current integration

∆P

15

P I

9

summation capacity regulator 18

16 17

DW

6

10 0..100% 50%

init. current final current Integration x2

init. current 11 final current integration x2

7

100%

12

D

8

PUMP 1 AND 2

lower. brake

E

CONSUMERS load signal „LS“ (maximum working pressure) Ð

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Load-Sensing Regulation

13 Differentiator: The signal „pump pressure“ (P) and feedback „load pressure“ (LS) are fed into the differentiator. The higher pump pressure is subtracted from the lower load pressure, .which results normally in a pressure difference with negative sign. 14 Differential pressure input: In the LS system, the pump pressure must always be higher than the load pressure (the pressure of the consumer). Thus, the system has always a power reserve compared to the consumer. Dependent on the tuning of the LS system, different pressure differences (∆p) are stored in the control. (20bar or 40 bar) The signal, generated in the differentiator (normaly negative), is added to the pressure difference stored in the LICCON and transmitted into the PI regulator. Example:

-

Example:

+

Example:

0

LS= 60bar P = 110bar ∆p= 40 bar

LS= 80bar P = 110bar ∆p= 40 bar

LS= 70bar P = 110bar ∆p= 40 bar

Difference: LS - P = ⇒ 60bar - 110 bar= ⇒ -50bar Summator: ⇒ -50bar + 40bar= ⇒ -10bar Input in PI regulator: ⇒ -10bar

Difference: LS - P = ⇒ 80bar - 110 bar= ⇒ -30bar Summator: ⇒ -30bar + 40bar= ⇒ +10bar Input in PI regulator: ⇒ +10bar

Difference: LS - P = ⇒ 70bar - 110 bar= ⇒ -40bar Summator: ⇒ -40bar + 40bar= ⇒ 0bar Input in PI regulator: ⇒ 0bar

In the ideal case, the resultant signal of the PI regulator is zero (0), i.e. a readjustment of the pump is not required. 15 PI regulator: In the PI regulator (P=proportional, I=integrating), an evaluation of the input signal is performed. If the incoming pressure signal is negative, the pump opening angle must be reduced. (See readjustment data word item (17)). In the reverse case, the pump opening angle must be increased.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation A

Load-Sensing Regulation

MASTER SWITCHES 2V

2V

10 V

10 V

2V 10 V

+ B SENSOR

C

LICCON - ZE 2

A B

incr.

1

2

1

1

2

1

1

2

1

corr. - VG min (HwÇ) 4 3

3

3

normaliz. C - key (ABB)

normaliz. C - key

normaliz. C - key (ABB-Ç)

1a

1a

1a

engine speed LMB tele length luffing ram

LS

13

5

LS - P

P

14

5

5

Q (VG) input

Q (VG) input

Q (VG) input

init. current final current integration

init. current final current integration

init. current final current integration

∆P

15

P I

9

summation capacity regulator 18

16 17

DW

6

10 0..100% 50%

init. current final current integration x2

init. current 11 final current integration x2

7

100%

12

D

8

PUMP 1 AND 2

lower. brake.

E

CONSUMERS load signal „LS“ (maximum working pressure) Ð

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Load-Sensing Regulation 16 Switch „Regulation ON“: Due to economical reasons, on new LS controls the regulating circuit is closed by the switch „regulation on“only when the master switch is being displaced, which results in the pump delivering the intital pressure of p=20bar or p=40bar respectively. At idling speed of the engine, the self-lubrication of the pump is assured by the pump circulation pressure of (11-13bar). In that state, an initial current of 200 mA is applied to pumps 1 and 2.

That switch does not exist on former controls which results in the pump initial pressure of 40 bar is built up as soon as the seat contact or the dead man’s button is actuated which results in the pump regulation to be switched ON.

17 PI re-adjustment data word (DW): The PI re-adjustment is indicated on the special picture and thus can be checked. The value of the PI re-adjustment corrects in the following summator the required oil volume input. Note: As it is difficult to realize the ideal case of 0mA, it should be tried to attain the re-adjustment value of -10mA to 0mA. Due to the negative re-adjustment value, the pump opening angle is slightly reduced. Thus the pump avails of sufficient reserve capacity in case of a higher oil volume requirement. 18 Summation Capacity Regulator (SLR): In order to adapt the pump capacity to the engine capacity and to prevent the engine to stall, the engine speed is monitored and fed into the summation capacity regulator. Moreover, the pressure difference of the required input of pump pressure to working pressure, the luffing ram pressure and the load pressure are fed into the summation regulator. For the distribution of the pump oil flow to the individual consumers, the required input is reduced in the individual multiplicating modules (6 and 10), i.e. the opening angles of the pumps and the control of the distributing valves are reduced simultaneously.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description (fundamentals) of the Load-Sensing regulator Characteristic curves Pump/Currents:

100%

I2

50%

100%

I1

50%

total oil volume Q (l/min.) Q control pump 1 I1

100% 75% 50% 25%

partial oil volume Q (l/min.) Q 1

init. current I1

control pump 2 I2

100% 75% 50% 25%

init. current I2

partial oil volume Q (l/min.) Q 2

The above characteristic curves represent the total oil flow and the partial oil flows of pumps 1 and 2 as well as the control currents of the pump regulation valves. The hydraulic crane control and the load-sensing regulation consist of an SPC program. (SPC = stored-program controller). That complex SPC program is subdivided into various program modules which are processed in different orders and, dependent on priority, with different speeds. The program cycle times of the entire program can last up to approx. 700msec. Due to that fact and due to the slow display building on the LICCON monitor, it is hardly possible to represent the rise of the magnetic currents. The initial currents of the pump regulation valves are set to approx. 210 mA. The final currents to approx. 710 mA.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1. Test and adjustment of basic setting and start of pump variation (initial current) Prerequisit: • Hydr. system to be at service temperature (above approx.. 50 °C). • The values of the pressure sensors „P“ and „LS“ must be all right. - see 1.2 • Mechanical pump zero position (Qmin) must be set correctly. - see1.3 • The external control oil pressure supply must be all right. - see 1.4 • The CW inputs on the special picture - corr. values should be in the + range (5 to 10mA). - see 1.5 Test sequence test idling speed! (see 1.1) Is idling speed within the range 1100 min-1 ± 50?

start Diesel engine!

adjust idling speed! (see 1.1)

no

only LTM 1090/2 and 1120/1

ja test pump controllers of pump1and pump 2 individually! (see1.5) adjust basic setting pump controller(R1)! (see1.5.1)

no

P-pressure on pumpP-pressure on pump 2 1 within tolerance no within tolerance range range10 to 12 bar ? 10 to 12 bar ? (see1.5.2) (see1.5.1) ja

adjust basic setting pump controller (R2)! (see1.5.2)

ja

test readjustment of pump1 and pump 2 individually! (see 1.6) pump readjustment of pump 1 o.k.!

yes

readjustment of pump 1 within tolerance range +5 to +10 mA ? (see 1.6.1)

readjustment of pump 2 within tolerance range +5 to +10 mA ? (see 1.6.2)

no

correct readjustment of pump 2 by the modification of corr.value ‘’CW 2.107’’ (initial current) and re-test! (see 1.6.2)

Note: The pump readjustment should be as small as possible.

Kundendienst: juh1 / july-2004

pump readjustment of pump 2 o.k.!

no

correct readjustment of pump 1by the modification of corr.value ‘’CW 2.105’’ (initial current) and re-test! (see 1.6.1)

Liebherr-Werk Ehingen GmbH

yes

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1.1 Test and adjustment of engine idling speed (only LTM 1090/2 and 1120/1) • Start Diesel engine and open Liccon test system with „i-key“.

1

• Open submenue „Sys.Spez“ in test system with key „F4“.

* *

11 1 2040 „DA-P“ 10 2 2025 „DA-LS“

• Select special picture „pressure sensors, engine / pump speed“ and read off actual engine speed under „CW1.0“ (fig. 1). Setpoint = 1100 1/min (+/-50) • Perform any correction by turning setting screw „Z“ (fig. 2) on the injection pump. turning in = higher speed turning out = lower speed Note: Lock setting screw „Z“ with counternut and seal it with red paint dot.

2 Z

1.2 Pressure sensors (DA) „P and LS“ - checking values • Activate ignition and crane control (without starting the engine) • Open Liccon test system by „i-key“. • Open in test system the submenu „Sys.Spez“ by key „F4“. • Select special picture „Pressure sensors, engine/pumpspeed“ (fig. 1) and compare indication on line „DW0.40“ (*1) with indication on line „DW0.41“ (*2) (fig. 1). Required value: The pressure indication should be identical (tolerance = +/- 3 bar)! Indication: The higher pressure indication should be on XL (LS-pressure sensor)! Or: Compare value of „DA-P“ on line „AEW13“ with value of „DA-LS“ on line „AEW14“. Required value: = or greater than (=>) 2000 mV +/- 30 mV (tolerance). Indication: At a greater deviation, localize the error source and possibly replace defective pressure sensor!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1.3 Test of mechanical pump zero position (Q-min) Note: This test must definitely be performed after the replacement of the double pump! • Connect pressure gauge (25 or 50 bar) to measuring point „M-P“.

• Start Diesel engine (approx.1100 1/min) and read off pressure from pressure gauge. Setpoint = approx. 6 - 10 bar Pay attention: Crane control should not be switched on! Indications on trouble shooting In case of a deviation exceeding the specified value(6-10 bar) at engine idling speed, the following additional checks can be performed:

-Y31

Ma1

DA-P

DA-LS

• Detach electr. connectors from control valves „-Y105“ and „-Y106“ (fig. 5).

-X621

-X622

4

Ma2

M-P -Y32

5

• No hydraulic pressure should be present on measuring points (Ma1 and Ma 2). If a pressure is present, replace the entire control unit. • On agreement with KD - LWE, there exists a further possibility to adjust the setpoint of the circulating pressure by the „Q-Min“ setting screws (on pump 1 or 2). If the circulating pressure does not remain constant, the variable displ. pump must be replaced. Remark: The pump circulating pressure (6-10 bar) in the mechan. pump zero position mainly serves to autolubrication.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Q-min (P1) Q-min (P2) setting screws Q-min (to be operated only if necessary)

M-Px

1.4 Test control oil pressure supply • Connect pressure gauge (50 or 60 bar) to measuring point „M-Px“ (fig. 5), start engine and check external control pressure. . Set point value in normal mode = approx. 45 bar (see also crane hydr. system)

- 29 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1.5 Test and adjustment of hydr. pump zero position (basic adjustment - pump controller) Note: The test must definitely be performed after a replacement of the pump (compl.), or after the replacement of the pump control unit! -Y31

1.5.1 Control valve - pump1 Test of pump controller (R1) • Detach electr. connector of pump 2 from control valve(-Y106).

R1

Pumpe 1

-Y32

5

• Attach electr. connector of pump 1 to control valve (-Y105). • Connect pressure gauge (25 or 50 bar) to measuring point „M-P“. • Start Diesel engine (idling speed = approx.. 1100 1/min) • Open submenue „Sys. Spez“ in test system with key „F4“. • Select special picture „pumps, currents, corr. values“ (fig. 7) and check or correct entry under „CW2.105“ (*3). Setpoint: + 5 to + 10 mA

M-Px

Pumpe 2

R2

DA-P

-X622 DA-LS

Adjustment of pump controller (R1) • By carefully „turning out or in“ the setting screw R1 (fig. 5) adjust the control start of pump 1 until a P- pressure of 16 - 20 bar is indicated on pressure gauge M-P (fig. 6)

-X621

6

• Check pressure indication on press. gauge - connection M-P (fig. 6). Setpoint = 16-20 bar

(turning out = higher P-pressure, turning in = lower P-pressure). M-P

1.5.2 Control valve - pump 2 Test adjustment of pump controller (R2) • Detach electr. connector (-Y105) from pump 1 and attach it to control valve (-Y106) of pump 2.

7

• Perform the same test steps as described under 1.5.1 . Check entry under „CW2.107“(*4). Adjustment of pump controller (R2) • Perform any correction of pump controller (R2) (as under 1.5.1). Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 30 -

8

*3

5

*4

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1.6 Test/adjustment of pump control or adjustment of initial current 1.6.1 Test of initial current - pump 1 • Detach electr. connector of pump 2 from control valve „-Y106“ (fig. 5)

8

• Start engine and open Liccon test system mit „i-key“. + + + + + + + + + + + + + + + +

• Switch on crane control by actuating the seat contact or dead man’s button. • Open the submenue „Sys.Spez“ with key „F4“ and select special picture „pump control PI content“. • Activate function „lowering boom“ and observe the readjustment at idling speed under „DWO.64“ (fig. 8) Setpoint of readjustment The readjustment should be within the range of +5 mA to +10 mA! In case of a larger deviation, adjust the readjustment of pump 2 by the respective modification of the initial current correction value „CW2.105“ (*3 / fig. 9).

8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8

9 10

*3

10

*4

1.6.2 Adjusting initial current for pump 1 • Open supervisor program (possible only with day code, see Liccon test system). • Open the sub-menue „Test“ by key „F5“ in the test system and select „AWL disinterpreter“.

9a

• Set pump variator CW 2.102 (line 2/fig. 9a) to value 1 = „duration OFF“ and, at CW 2.101 (line 15/Fig. 9a), accept with „1“ (at „engine OFF“, value will be reset to 0 = „variation active“). • Enter in line „CW“ = „2.105“ and after pressing „key F6“ (modify), enter the the respective correction value (+ or -) until P = 16 bar is attained (line 3/Fig. 9b) during lowering boom. If the value . . . . . . . Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 1.6.2 Adjustment of initial current for pump 1 If the value is > 20 bar, reset the current by „1 mA steps“. Note: Make a note of determined correction value for„CW2.105“ (*3)!

16

• If CW 2.105 must be corrected by more than 30 mA, adjust the respective pump variator (refer to „1.5 Test and ad-justment of hydr. pump zero position“).

9b Note: After the modification of the pump initial current, always activate at first a motion before the test. Indication: The re-adjustment value + 5 mA to + 10 mA corresponds to a „delta-P“ (∆ p) of 20 (40) bar!

1.6.3 Test and adjustment of initial current for pump 2 • Detach electr. connector „-Y105“ from the variation valve of pump 1 (P1) and attach it to the variation valve of pump 2 (P2) (fig. 5). • Perform test and correction as described under 1.6.1 and 1.6.2. • Transmit correction value „*3“ (fig. 9) for intial current (P2) to line „CW 2.107“ = correction value „*4“ (fig. 9). • Re-attach connector „-Y105“ to variation valve of pump 1 (P1) and connector „-Y106“ to variation valve of pump 2 (P2) (fig. 5). • Enter the determined correction value for pump 1 (P1) -see 1.6.2- also under „*3“!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test/adjustment of variable displacement pumps 2. Test/adjustment of pump control or adjustment of final current (only LTM 1090/2 and 1120/1) Prerequisites: • Crane orderly set on outriggers (see operating instructions). • Boom sections should be telescoped at least to the length of one telescopic section. • Hydraulic system must be at operating temperature (over approx. 50 °C). • Hoist speed (C-key) must be set to 100 %. • Winch rotating indication must function and incremental sensor be adjusted! • The values of pressure sensors „P“ and „LS“ must be all right! -see 1.2 • Mechanical pump zero position (Qmin) must be set correctly. -see 1.3 • The external control oil pressure supply must be all right. -see 1.4 • Pump controller - zero position (see 1.5) and adjustment of initial current (see 1.6) must be all right. • The corr. value (CW entry) for final current distributor valve (Hw ↑) should be on special picture „winch 1, currents, corr. values“ on line ’’CW 2.091’’ = 0 (mA). Test sequence start Diesel engine and activate Hw ↑ to maximum at high-speed!

ja

check max. pump variation of pump 1 and pump 2! (see 2.) pump readjustment of pump 1 o.k..!

yes

readjustment of pump 1 within tolerance range 455 ± 10 mA ? (see 2.1)

readjustment of pump 2 within tolerance range 455 ± 10 mA ? (see 2.2)

yes

pump readjustment of pump 2 o.k.!

no

no

correct readjustment of pump 1 by the modification of corr.values ’’CW 2.106’’ (final current) and re-test! (see 2.1)

correct readjustment of pump 2 by the modofication corr.values ’’CW 2.108’’ (final current) and re-test! (see 2.2)

Note: The pump readjustment should be as small as possible (negative value is better than positive value). Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 2. Test/adjustment of pump control or adjustment of final current (only LTM 1090/2 and 1120/1) 2.1 Test of final current pump 1

10

• Detach electr. connector „-Y106“ from control valve of pump 2 (paragr. 1.5 - fig. 5). • Start engine, activate crane control (seat contact or dead man’s button and high-speed. • Check activated high-speed on the crane operating picture (fig. 10) (symbol will be displayed).

11

• Open Liccon test system with „ikey“. 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455 455

• Open submenue „Sys.Spez“ with key „F4“ in test system. • Select special picture „pump control PI content“ (fig. 11). • Steer master switch to max. position „Hw hoisting“ (without load) and observe the pump control under „DW0.64“ (fig. 11) at idling speed Setpoint = 455mA (+/-10mA)

12

• In case of a larger deviation from the set point, adjust the readjustment of pump 1 by the respective modification of the final current correction value„*5“ (fig. 12).

10

*5

10

*6

Note: Make a note of the determined corr. value for„CW2.106“(*5)!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 34 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Test and adjustment of variable displacement pumps 2. Test / adjustment of pump variation and final current (only LTM 1090/2 and 1120/1) 2.2 Adjustment of final current • Open supervisor program, (possible only with day code, see Liccon tests ystem). • Open the submenue „Test“ by key „F5“ and select „AWL disinterpreter“. • Set pump variator CW 2.102 (line 2/fig. 9a) to value 1 = „duration OFF“ and accept at 2.101 (line 15/fig. 9a) with „1“. • Detach electr. connector „-Y106“ from variation valve of pump 2 (section 1.5 - fig. 5). • Enter in line „CW“ = „2.106“ and, after pressing „key F6“ (modify), modify the correction value for the pump final current until the winch rotates at 56 r.p.m. ( ± 1) during „lifting“ at full throttle and activated high-speed (line 7/fig. 13). Important: Adjustment switch must be approached before.

13

Note: Make a note of the determined corr. value for „CW2.106“ (*5/fig 12)!

2.3 Test / adjustment of final current for pump 2 • Detach electr. connector „-Y105“ from the variation valve of pump 1 (P1) and attach it to the variation valve of pump 2 (P2) (section 1.5 - fig. 5). • Perform test and correction as described under 2.1 and 2.2 . • Transmit correction value „*5“ for final current (P2) to line „CW2.108“ = correction value „*6“ (line 8/fig. 12). • Re-attach electr. connector „-Y105“ to variation valve of pump 1 (P1) and attach electr. connector „-Y106“ to variation valve of pump 2 (P2) (fig. 5). • Enter the determined correction value for pump 1 (P1) -see 2.2- also under „*5“ (line 4/fig. 12)!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 35 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description of modification of initial or final currents Note: The preset correction values should be modified only in exceptional cases. If other values than „0“ are entered for the correction values (see special picture correction values), make a note of the modified values before any replacement of the software and re-enter them after the replacement of the software without delay! 1. Open supervisor program Enabling access - correction values (CWs) „modify currents“. • Press key

and key

simultaneously

• Enter Code:_ _ _ _ • Press key

(MODIFY)

• Press key • Select key

(ACCESS)

• Enter 039

-

• Select key

(END)

•

key „t’’ 08 accepted 4 (screen info)

key (END) accept ⇒ Enter!! (screen Info)

• acknowledge with

2. Open test system with key • Press key (special picture outline is displayed) • Select special picture for correction values with • Acknowledge with

and

/

(special picture - correction values is displayed)

• Make a note of the common word (CW) to be modified (e.g. CW 2.56 for intial current „slewing gear left“). The initial current is 200 mA and can be modified by ± 100 mA. • Select 2x key

(back) (back to main menue test system)

3. Modify initial current (e.g. slewing gear left) • Select key •

(test)

key (AWL DIS-INT)

• Press

1x (>)

• Press

key (v) 5x

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

-

AWL operand specification (screen info)

- 36 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Description of modification of initial or final currents 3. Modify initial current (e.g. slewing gear left) • Cursor is placed on CW_._ _ _ • Enter 2.056 • Select

key (MODIFY)

• CW 2.056 • with

-

0:_ _ _: no description!

(screen info)

key select (+ / -) sign

• Thereupon enter current value for the modification of the initial current. (The basic setting without correction value is 200 mA. The modification of the inital current by e.g. -20 mA, results in a new initial current of 180 mA.) • CW 2.056 = 0: -20 _ _ _ : no description!

(screen Info)

enter • Acknowledge with Now, the initial current has been modified to 180 mA. However, that modification would not be cancelled after a new start. 4. Permanent acceptance of modification • Cursor is placed on CW 2.056 • Enter CW 2.101 • Select • CW 2.101

key (MODIFY) -

0:_ _ _: no description

(screen info)

• Enter 1, thus the modifcation remains stored • Press • Select •

key (BACK)

key (END) back to operating picture

5. Input of further correction values An adaptation of further initial or final currents is performed by the identical procedure as specified in the 2nd paragraph. Warning: Reset the right to access for the key to zero after completion of the modification (see item 1). I.e., after the opening of "ACCESS", „000“ must be entered (instead of 039). Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 37 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Short instructions for manual test and adjustment work on crane types LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 Fundamental operations: • • • • • • •

Preheat the hydraulic system to approx. 50° C. Check the control oil pressure (s. circuit diagram) Rapid motion must be activated! Winch speed = C-Taste must be set to 100%! Winch rotation indication must be in function and incremental sensor adjusted! Initiate Liccon test system by „I“-key (possibly day code required) Check the 0–point of the pressure sensors (on test system special picture „pressure sensors, engine / pump speed ...“) at activated control (without engine), the difference of the pressure display should not be greater than (>) 3 bar! Indication: The higher pressure display should be on XL (LS pressure sensor)!

Test and adjustment of variable displacement pump 1. Checking Q-min of the pumps: - Remove connector from the variable displacement pump/s. - Start Diesel engine and check the circulation pressure, the engine running. Required value = 4-12 bar. If the Q-min pressure is not within this range, re-adjust the Q-min pressure . Adjustment procedure of double variable displacement pumps - Turn back the Q-min screw of variable displacement pump 2 by approx. 1/2 rotation. - Adjust by Q-min screw of variable displacement pump 1 a circulation pressure of 4-6 bar and subsequently, adjust by Q-min screw of variable displacement pump 2 a circulaton pressure of 8 bar. 2. Checking and adjusting initial current of variable displacement pump 1: - Place the connector of pump 1 on variable displacement pump 1 (pump 2 removed). - On test system special picture, open „Control/regulation setting values“, switch the pump regulator by CW 2.102 to value 2 = persistent ON. - Start Diesel engine and inspect the re-adjustment DW0.64 on special picture „Pump regulation PI-portion“ Required value = +5 bis +8 mA. If the re-adjustment is not within this range, correct the re-adjustment. Example-a): if the re-adjustment indicates the DW0.64 = +15 mA, increase the CW 2.105 by 10mA - the re-adjustment DW 0.64 should now be +5 mA!. Examplel-b): if the re-adjustment indicates the DW0.64 = -15 mA, deduct from from the indicated value on CW 2.105 = 20 mA! The re-adjustment DW 0.64 should also be +5 mA now. Pay attention: Absolutely note adjusted value (on line CW 2.105)! Indication: On crane types LTM 1080/1, 1100/2 and LTM 1150/1, the regulator also cuts in during lowering of the boom.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Short instructions for manual test and adjustment work on crane types LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 3. Checking and adjusting of final current on variable displacement pump 1: Prerequisite: • Rapid motion activated and C-key at 100%! • Boom sections telescoped to a minimum boom section length! - place the connector of pump 1 on variable displacement pump 1. (pump 2 removed) - On test system special picture, open „Control/regulation/setting values“ switch the pump regulator by CW 2.102 to value 1 = switch OFF. - On test system special picture, open „Setting values winch 1“. - Activate the motion - hoist winch 1 „lifting“ to maximum and at full throttle, check winch speed on special picture „Setting values winch 1 under „QW 0.70“. Required value: - see crane-specific test values! - If necessary, adjust to the specified speed (s. 3.1/3.2) by „CW 2,106“ on special picture „Pumps, currents, corr. values“. - Pay attention: Absolutely note adjusted value (on line CW 2.106)! Crane-specific test and setting values: 3.1 Crane types with single variable displacement pump - LTM 1055/1: Winch speed = approx. 65 1/min at engine speed of 950 1/min (automatic speed increase) - LTM 1060/2: Winch speed = approx. 56 1/min at engine speed of 950 1/min 3.2 Crane types with double variable displacement pumps - LTM 1080/1: Winche speed = approx. 56 1/min at engine speed of 1400 1/min (speed only at 1 activated pump) - LTM 1090/3: Winch speed = approx. 32 1/min at max.engine speed (full throttle) (speed only at 1 activated pump) - LTM 1100/2: Winch speed = approx. 32 1/min at max. engine speed (full throttle) (speed only at 1 activated pump) - LTM 1150/1: Winch speed = approx. 41 1/min at max. engine speed (full throttle) (speed only at 1 activated pump) 4. Checking/testing final current on variable displacement pump 2: Procedure - as described under 3. and 3.2! Pay attention: Remove connector from pump 1 and place it on variable displacement pump 2! (no connector is placed on pump 1) Indication: The setting values for pump 2 are determined by the connector of pump1. Pay attention: Absolutely note the adjusted value (on line CW2.106)! 5. Enter determined values into the respective CWs Determined values for pump 2: - enter from CW 2.105 into CW 2.107 and CW 2.106 into CW 2.108. Determined values for pump 1: - re-enter the noted values of pump 1 into the CWs 2.105 and 2.106.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Short instructions for manual test and adjustment work on crane types LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 6. Test and adjustment on hoist gear I Prerequisite: Rapid motion activated and C-key at 100%! - On test system special picture, open „Control, regulation setting values“, switch the pump regulator by CW 2.102 to value 2 = persistent ON 6.1 Checking/adjusting of initial current „Hw lifting“ - On test system special picture, open „Winch 1, currents, corr. values“ - Adjust initial current by CW 2.090 to ensure the winch to rotate very slowly into lifting direction. The re-adjustment DW 0.64 should be approx. 3 to 5 mA. (on spec. picture press. sensors,, engine/pump speed, an LS-press. incr. is shown). - Deviate the master switch further and reset it towards zero, the winch must nearly stop. 6.2 Checking/adjusting the initial current „Hw lowering“ - When deviating the master switch to initial current, the winch must not yet rotate into lowering directtion. The winch starts to rotate only at minimal further deviation. The winch must restop when resetting the master switch. - Adjustment by CW 2.092. 6.3 Checking/adjusting of the final current „Hw lifting“ - Switch pump regulator by CW 2.102 on value 0 = ON - Open special picture „Pump regulation PI-portion“ - At full throttle, activate „Hw lifting“ to maximum and inspect re-adjustment DW 0.64. Required value = 0 mA (should not be negative) • at positive regulation on CW 2.091 = enter minus(-) value • at negative regulation on CW 2.091 = enter plus(+) value Indication: If it is not possible to set the re-adjustment in this manner, re-adjust the feeding pressure balance. • at negative regulation = turn in the screw of the pressure balance further. • at positive regulation = turn out the screw of the pressure balance further. This can be the case especially on the LTM 1080/1, as the max. oil volumes have been modified by a new software on this crane. Pay attention: The pressure balances on the LTM 1060/2 cannot be adjusted! 6.4 Checking/adjusting the final current „Hw lowering“ - At full throttle, activate „Hw lowering“ to max. and inspect re-adjustment DW 0.64. - Required value and procedure as under Hw lifting. - Correction on CW 2.093 Indication: If a setting of the re-adjustment is not possible, check the adjustment of the lowering brake. At a lowering pressure of more than 80 bar, the re-adjustment declines into the negative range. Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Short instructions for manual test and adjustment work on crane types LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 7. Test and adjustment of the luffing gear Prerequisite: Rapid motion activated and C-key at 100%! Pump regulator switched by CW 2.102 to value 0 = ON 7.1 Checking/testing of initial current „luffing up“ - On test system special picture, open „Luffing, currents, corr. values“. - When deviating the master switch to initial current, the boom should not yet move into lifting direction. - On special picture „Pressure sensors, engine/pump speed“, a slight LS-pressure increase can be recognized . - At further deviation of the master switch, the boom starts the upwards movement without delay. (When resetting to initial current, the movement of the boom must stop) - Adjustment by CW 2.070. 7.2 Checking/adjusting of final current „luffing up“ - On special picture, open „Pump regulation PI-portion“ - At full throttle, activate „luffing up“ to max. and inspect the re-adjustment DW 0.64. Required value = 0 mA (should not be negative) • at positive regulation on CW 2.071 = enter minus(-) value • at negative regulation on CW 2.071 = enter plus(+) value Indication: If it is not possible to to set the re-adjustment in this manner, re-adjust the pressure feeding balance. • at negative regulation = turn in the screw of the pressure balance further. • at positive regulation = turn out the screw of the pressure balance further. This can be the case especially on the LTM 1080/1, as the max. oil volumes have been modified by a new software for this crane. Pay attention: The pressure balances on the LTM 1060/2 cannot be adjusted! 7.3 Checking/adjusting initial current „lowering boom“ - Connect to the control circuit (X) of the lowering brake a pressure gauge (measuring range 25 bar) and determine the release pressure of the lowering brake. - Adjust the control pressure by CW 2.000, to ensure that it is slightly under the release pressure. Required average value = approx. 10-11 bar 7.4 Checking/adjusting final current „lowering boom“ - Determine the time for „luffing up“ within the range from 30° to 60°. (at full throttle and max. deviation) - Determine the time for „lowering boom“ within the range from 60° to 30° and adjust the final current by CW 2.001 until the determined required time value of „luffing up“ has been attained. Indication: The speed during „luffing and lowering“ should be identical! This can also be checked by setting of the C-key to 20%. Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Short instructions for manual test and adjustment work on crane types LTM 1055/1, 1060/2, 1080/1, 1090/3, 1100/2 and 1150/1 8. Test and adjustment on telescoping gear Prerequisite: Rapid motion activated! Pump regulator switched by CW 2.102 to value Wert 0 = ON. 8.1 Checking/adjusting initial current „extending“ - On test system special picture, open „Telescoping, currents, corr. values“. - When deviating the master switch to initial current, a starting extension movement should be recognizable at the tele ram. - On special picture „Pressure sensors, engine/pump speed“, an LS-pressure rise is recognizable. - Adjustment by CW 2.010. 8.2 Checking/adjusting initial current „retracting“ - When deviating the master switch to initial current, a starting retraction movement should be recognizable at the tele ram. - On special picture „Pressure sensors, engine/pump speed“ , an LS-pressurerise is recognizable. - Adjustment by CW 2.020. 8.3 Checking/adjusting final current „telescoping out“ - Open special picture „Pump regulation PI-portion“ - At full throttle, activate „telescoping out“ to max. and inspect the re-adjustment DW 0.64. Required value = 0 mA (should not be negative) • at positive regulation on CW 2.011 = enter minus(-) value • at negative regulation on CW 2.011 = enter plus(+) value Pay attention: „Telescoping out“ may only be performed within the length range from 10% to 80% 80%! 8.4 Checking/adjusting final current „retracting“ - At full throttle, activate „retracting“ to max. and inspect the re-adjustment DW 0.64. Required value = 0 mA (should not be negative) • at positive regulation on CW 2.021 = enter minus(-) value • at negative regulation on CW 2.021 = enter plus(+) value Pay attention: „Retracting“ may only be performed within the length range from 80% to 10%! Indication: If it is not possible to set the re-adjustment in this manner, re-adjust the feeding pressure balance. • at negative regulation = turn in the screw of the pressure balance further. • at positive regulation = turn out the screw of the pressure balance further. This can be the case especially on the LTM 1080/1, as the max. oil volumes have been modified by a new software on this crane. Pay attention: The pressure balances on the LTM 1060/2 canot be adjusted! Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Pump setup on the LTM 1055/1

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Litre performance of the pump over the winch speed: LTM 1055/1: 65 - 74 RPM ideal: 72 RPM

Final current

Lock idling speed at 1000 RPM and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image: "Setting values Winch1" Raise MS hoist gear, move to maximum and observe speed.

How? Pull out plug. Idling speed and full throttle Lock idling speed at 1000 RPM. Raise HW 1 Slide fully: CW 2.090: -100 mA MS Raise hoist gear lightly, move until output image A 4.6 is supplied with initial current, then measure pump pressure. Lock idling speed at 1000 RPM. Do not move any function . Look at readjustment.

Set CW 2.090 and CW 2.091 back to the output value!

Control duration IN: (CW 2.102 = 2) Special image PI-proportion: Readjustment +3 to +8 mA

Pump pressure: 14-18 bar

Start of adjustment (1st variant)

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Final current pump CW 2.106

Initial current Pump CW 2.105 OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA

Initial current Pump CW 2.105 OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA

Where? Qmin screw.

Control OUT (CW 2.102 = 1) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 25 bar

LTM 1055/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

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Special image"Setting values Full throttle and fast mode Winches": 77-87 RPM Move MS Function to maximum

Speed check Raise / lower hoist gear

Important: Deflect MS approx. 20% until contolled. Back to direction contact: no movement at 5% deflection movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed (do not lock!); Vibrator in. Pressure gauge at P and LS-pressure. Special image "Hoist gear pump control PI proportion" 1. At how many mA does the LS pressure come (change of approx. 5 bar)? 2. Set intial current to this value 3. Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. at very low speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA Hook starts and stops without jerking.

2.091 End current Raise hoist gear 1 2.093 End current Lower hoist gear 1 2.111 End current Raise hoist gear 2 2.113 End current Lower hoist gear 2 If the readjustment to the change in the end current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1055/1

Final currentRaise / lower hoist gear

What? Initial currentRaise / lower hoist gear

LTM 1055/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 47 -

End current Lower

What? Initial current Lower

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing.. At further 5% deflection movement must start at minimum and stop again when deflected back.

If the readjustment to the change in the end current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balancemust be turned.

CW 2.071 End current Raise

How? Where? Idling speed. Pressure gauge to P and LS pressure. CW 2.070 Initial current Raise Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure (change at approx. 5 bar) occur? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. At very low speed movement must start and stop without jerking.

CW 2.001 End current Lower

Full throttle Move MS Function to maximum

21 - 22 bar

MS 5%: movement starts

How? Where? Idling speed. Pressure gauge on the lowering brake CW 2.000 Initial current Raise Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? direction contact: no movement and 1 bar below the initial pressure.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: Readjustment: 0 to +10 mA Luffing starts and stops without jerking.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial currentRaise

LTM 1055/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA

Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. The MS deflection should be less than for the hoist gear (no start at 5%, but less than that). Full throttle and fast mode Move MS Function to maximum

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If the readjustment to the change in the end current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balancemust be turned.

CW 2.011 Initial current Cylinder out CW 2.021 Initial current Cylinder in

How? Where? CW 2.010 Initial current Cylinder out Idling speed. Pressure gauge to P and LS pressure. CW 2.020 Initial current Cylinder in Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure (change at approx. 5 bar) occur? 2. Set initial current to this value 3. readjustment: 0 to +10 mA at minimum speed, otherwise correct the initial current.

Precondition: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1055/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

During the turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

38 - 42 seconds for one rotation

Checking the C button

End current Turn left / right

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If the speed is not reached for the change in end current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balancemust be turned.

CW 2.058 End current Turn right CW 2.059 End current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Precondition: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1055/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Pump setup on the LTM 1060/2

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Litre performance of the pump over the winch speed: LTM 1060/2: 60 - 66 RPM

Final current

Lock idling speed at 1000 RPM and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image: "Setting values Winch 1" Raise MS hoist gear, move to maximum and observe speed.

How? Pull out plug. Idling speed and full throttle Lock idling speed at 1000 RPM. Raise HW 1 slide fully: CW 2.090: -100 mA MS Raise hoist gear, move lightly until output image A 4.6 is supplied with initial current, then measure pump pressure. Lock idling speed at 1000 RPM. Do not move any function . Observe readjustment.

Set CW 2.090 and CW 2.091 back to the output value!

Control duration IN: (CW 2.102 = 2) Special image PI-proportion: readjustment +3 to +8 mA

Pump pressure: 14-18 bar

Start of adjustment (1st variant)

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Final current Pump CW 2.106 OR: Qmax screw

Initial current Pump CW 2.105 OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA

Initial current Pump CW 2.105 OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA

Where? Qmin screw.

Control OUT (CW 2.102 = 1) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 19 bar

LTM 1060/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

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Special image "Setting values Full throttle and fast mode Winches": 70 - 77 RPM Move MS Function to maximum

Speedcheck Raise / lower hoist gear

Important: Deflect MS approx. 20% until controlled. Back to direction contact: no movement At 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed (do not lock!); Vibrator in. Pressure gauge at P and LS-pressure. Special image "Hoist gear pump control PI proportion" 1. At how many mA does the LS pressure come (change of approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. at very low speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the setting of the LUDV valve must be changed. Caution: This will change the final current settings of all functions!

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1060/2

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1060/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

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Final current Lower

What? Initial current Lower

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing. At further 5% deflection, movement must start at minimum and stop again when deflected back.

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at minimum speed, else correct initial current. 4. At minimum speed movement must start and stop without jerking.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the setting of the LUDV valve must be changed. CAUTION: This will change the final current settings of all functions!

CW 2.071 Final current Raise

Where? CW 2.070 Initial current Raise

CW 2.001 Final current Lower

Full throttle Move MS Function to maximum

21 - 22 bar

MS 5%: Movement starts

How? Where? CW 2.000 Initial current Lower Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? Direction contact: no movement and 1 bar below the initial pressure.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: Readjustment: 0 to +10 mA Luffing starts and stops without jerking.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1060/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA

Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. The MS deflection should be less than for the hoist gear (no start at 5%, but less than that). Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at minimum speed, otherwise correct the initial current.

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If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the setting of the LUDV valve must be changed. CAUTION: This will change the final current settings of all functions!

CW 2.011 Initial current Cylinder out CW 2.021 Initial current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Precondition: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1060/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

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33 - 36 33 -36 seconds for one rotation

Final current Turn left / right

Checking the C button

At what value? At 5% MS deflection the turning starts and stops.

While turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: no movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Precondition: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1060/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 55 -

Final current

Start of adjustment (2nd variant) Can also be used for monitoring.

Start of adjustment (1st variant)

W hat? Qmin

Delta P: 20 bar

LTM 1080/1:

How ? W here? Pull out both plugs. Qmin screws. Idling speed and full throttle Screw out the screw Pump 2 and measure pressure. If n.i.O Screw in screw pump 1 again. Screw in screw pump 2 again until pressure rises slightly Pump pressure: 14-18 bar Idling speed Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. Attach plug pump 1 to pump 2. OR: Adjustment screw Start of adjustment pump Move MS Raise and measure pump pressure. 2, only if deviation > +/- 30 mA Attach plug pump 1 to pump 1. Pump 1: Change CW 2.105. Move MS Raise and measure pump pressure. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 Idling speed Pump 2:Change CW 2.105, if setup is ended, Control duration IN: Attach plug pump 1 to pump 2. (CW 2.102 = 2) transfer value in CW 2.107. Special image PI-proportion: Attach plug pump 1 to pump 1. OR: Adjustment screw Start of adjustment pump Readjustment 2, only if deviation > +/- 30 mA +3 to +8 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 Litre performance of the Full throttle and Fast mode. Pump 2:Change CW 2.106, if setup is ended, pump over Raise HW 1 Slide fully on: CW 2.091: +100 mA transfer value in CW 2.108. the winch speed: Special image "Setting values W inch 1" Pump 1: Change CW 2.106. LTM 1090/3: 28 - 33 RPM Attach plug pump 1 to pump 2. ideal: 32 RPM Raise MS move to maximum and observe speed. Attach plug pump 1 to pump 1. Raise MS hoist gear, move to maximum Set CW 2.091 back to the output value!

At w hat value? Pump pressure: 4-8 bar

Control OUT (CW 2.102 = 1) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Pump settings for LTM 1090/3

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Special image "Setting values Full throttle and fast mode Winches": 70 - 77 RPM Move MS Function to maximum

Speedcheck Raise / lower hoist gear

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Special image "Hoist gear / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 m Full throttle and fast mode Move MS Function to maximum

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA Hook starts and stops without jerking.

- 56 -

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1080/1

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1080/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 57 -

Final current Lower

What? Initial current Lower

20 - 21 bar

MS 5%: Movement starts

At what value? Direction contact: no movement and 1 bar below the initial pressure.

How? Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar Full throttle Move MS Function to maximum

CW 2.001 Final current Lower

Where? CW 2.000 Initial current Lower

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

How? Where? Idling speed. Pressure gauge to P and LS pressure. CW 2.070 Initial current Raise Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this val

At what value? At very low speed: Readjustment: 0 to +10 mA Luffing starts and stops without jerking.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1080/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at minimum

Full throttle and fast mode Move MS Function to maximum

At what value? At very low speed: Readjustment: 0 to +10 mA

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

- 58 -

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance

CW 2.011 Initial current Cylinder out CW 2.021 Initial current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Precondition: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1080/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

While turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

27 - 32 seconds for one rotation

Checking the C button

Final current Turn left / right

- 59 -

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Precondition: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1080/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Pump settings for LTM 1090/2

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 60 -

Final current

Initial current

What? Qmin

Special image 0.52 Pump adjustment PI proportion: Idling speed: slightly positive Full throttle: slightly negative

At what value? Pump pressure: 4-8 bar

The pump final current cannot be established by the litre performance. That is why the final current is not set until maximum hoist gear speed.

How? Start engine; Selection image T/TK appears; pump not supplied with current Idling speed and full throttle Unscrew screw pump 2 and measure pressure. If n.i.O Screw in screw pump 1 again. Screw in screw pump 2 again until pressure rises slightly. Idling speed. Attach plug pump 1 to pump 2. Attach plug pump 1 to pump 1.

1. Device: Delta P: 40 bar; from June 99: Delta P: 20 bar Control always Duration IN no switching out possible Precondition: Empty hook, 4x reeved, 2 Tele at 100%

LTM 1090/2:

Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30

Where? Qmin screw.

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 61 -

Speed Raise / lower hoist gear

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1090/2:

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Output image A 4.0 to A 4.3: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: 3. Read

100 - 110 m/min

Attach chain or rope to the hook for example 10 m Full throttle and Fast mode Move MS Function to maximum With a 10 m chain, this movement may last for between 6 and 6.6 seconds.

Example: Readjustment without moving: +5 mA Readjustment without moving: +15 mA Special image 0.52 Pump Full throttle and fast mode Move MS Function to maximum adjustment PI proportion: Near "-30 mA" after some program runs

At what value? At very low speed: Readjustment: change: 0 to +10 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0 mA", t CW 2.106 Final current Pump 1 CW 2.108 Final current Pump 2

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control always Duration IN no switching out possible Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1090/2

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 62 -

Final current Lower

What? Initial current Lower

Final current Raise

What? Initial current Raise

LTM 1090/2:

How? Idling speed. Pressure gauge to P and LS pressure. Output image A 4.4: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: 3. Readjustment change: 0 to

MS 5%: Movement starts

At what value? Direction contact: no movement and 1 bar below the initial pressure.

20 - 21 bar

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

Where? CW 2.070 Initial current Raise

How? Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar Full throttle Move MS Function to maximum

CW 2.001 Final current Lower

Where? CW 2.000 Initial current Lower

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

Example: Readjustment without moving: +5 mA Readjustment without moving: +15 mA Full throttle and fast mode Special image 0.52 Pump adjustment PI proportion: Move MS Function to maximum Near "-30 mA" after some program runs

At what value? At very low speed: Readjustment change: 0 to +10 mA Luffing starts and stops without jerking.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

LTM 1090/2:

How? Idling speed Pressure gauge to P and LS pressure. Output image A 2.6 to A 2.7: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: 3. Readjustment chang

Example: Readjustment without moving: +5 mA Readjustment without moving: +15 mA Full throttle and fast mode Special image 0.52 Pump Move MS Function to maximum adjustment PI proportion: Near "-30 mA" after some program runs

At what value? At very low speed: Readjustment: change: 0 to +10 mA Small movement must be visible.

- 63 -

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance mu

CW 2.011 Final current Cylinder out CW 2.021 Final current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Precondition: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 64 -

approx. 30 seconds for one rotation

Final current Turn left / right

Checking the C button

At what value? At 5% MS deflection the turning starts and stops.

During slow driving, the C button is selected and all steps 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed and fast mode Move MS function to maximum

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Precondition: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1090/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Pump settings for LTM 1090/3

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 65 Idling speed Attach plug pump 1 to pump 2. Attach plug pump 1 to pump 1.

Full throttle and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image "Setting values Winch 1" Attach plug pump 1 to pump 2. Raise MS move to maximum and observe speed. Attach plug pump 1 to pump 1. Raise MS hoist gear, move to maximum Set CW 2.091 back to the output value!

Control duration IN: (CW 2.102 = 2) Special image PI-proportion: Readjustment +3 to +8 mA

Litre performance of the pump over the winch speed: LTM 1090/3: 28 - 33 RPM ideal: 32 RPM

Final current

Pump pressure: 14-18 bar

Start of adjustment (1st variant)

How? Pull out both plugs. Idling speed and full throttle Screw out the screw Pump 2 and measure pressure. If n.i.O Screw in screw pump 1 again. Screw in screw pump 2 again until pressure rises slightly Idling speed Attach plug pump 1 to pump 2. Move MS Raise and measure pump pressure. Attach plug pump 1 to pump 1. Move MS Raise and measure pump pressure.

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 Pump 2:Change CW 2.106, if setup is ended, transfer value in CW 2.108. Pump 1: Change CW 2.106.

Where? Qmin screws.

Control OUT (CW 2.102 = 1) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 20 bar

LTM 1090/3:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 66 -

Special image "Setting values Full throttle and fast mode Winches": 47-57 RPM Move MS Function to maximum

Speedcheck Raise / lower hoist gear

Important: Deflect MS approx. 20% until controlled. Back to direction contact: no movement At 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Special image "Hoist gear / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. at very low speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Precondition: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1090/3

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1090/3:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 67 -

Final current Lower

What? Initial current Lower

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing. At further 5% deflection, movement must start at minimum and stop again when deflected back.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

How? Where? CW 2.070 Initial current Raise Idling speed. Pressure gauge to P and LS pressure. Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. At very low speed movement must start and stop without jerking.

CW 2.001 Final current Lower

Full throttle Move MS Function to maximum

21 - 22 bar

MS 5%: Movement starts

How? Where? CW 2.000 Initial current Lower Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar 3. At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? Direction contact: no movement and 1 bar below the initial pressure.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: Readjustment: 0 to +10 mA Luffing starts and stops without jerking.

Precondition: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1090/3:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

LTM 1090/3:

Special image PI-proportion: Readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: Readjustment: 0 to +10 mA

- 68 Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. Readjustment: 0 to +10 mA at minimum speed, otherwise correct the initial current.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.011 Initial current Cylinder out CW 2.021 Initial current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Precondition: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

While turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

33 - 38 seconds for one rotation

Checking the C button

Final current Turn left / right

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Precondition: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1090/3:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

- 69 -

Pump settings for LTM 1100/2

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 70 -

Litre performance of the pump over the winch speed: LTM 1100/2: 28 - 33 RPM ideal: 32 RPM

Final current

Idling speed Attach plug pump 1 to pump 2. Attach plug pump 1 to pump 1.

How? Pull out both plugs. Idling speed and full throttle Screw out the screw Pump 2 and measure pressure. If n.i.O Screw Pump 1 in again. Screw in screw pump 2 again until pressure rises slightly Idling speed Attach plug pump 1 to pump 2. Move MS Raise and measure pump pressure. Attach plug pump 1 to pump 1. Move MS Raise and measure pump pressure.

Full throttle and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image "Setting values Winch 1" Attach plug pump 1 to pump 2. Raise MS move to maximum and observe speed. Attach plug pump 1 to pump 1. Raise MS hoist gear, move to maximum and observe speed. Set CW 2.090 and CW 2.091 back to the output value!

Control duration IN: (CW 2.102 = 2) Special image PI-proportion: readjustment +3 to +8 mA

Pump pressure: 14-18 bar

Start of adjustment (1st variant)

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Pump 2: CW 2.105 change,. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 1: CW 2.105 change. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 2: Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 2:Change CW 2.106, if setup is ended, transfer value in CW 2.108. Pump 1: Change CW 2.106.

Where? Qmin screw.

Control OUT (CW 2.102 = 1) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 20 bar

LTM 1100/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 71 -

Special image "Setting values Full throttle and fast mode Winches": 47-57 RPM Move MS Function to maximum

Speedcontrol Raise / lower hoist gear

Important: Deflect MS approx. 20% until controlled. Back to direction contact: no movement at 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Special image "Hoist gear / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +10 mA at minimum speed, else correct initial current. 4. at minimum speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: readjustment: 0 to +10 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1100/2

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1100/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 72 -

Final current Raise

What? Initial current Raise

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing.. At further 5% deflection, movement must start at minimum and stop again when deflected back.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

How? Where? CW 2.070 Initial current Raise Idling speed. Pressure gauge to P and LS pressure. Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. at very low speed movement must start and stop without jerking.

CW 2,001 Final current Raise

Idling speed Move MS Function to maximum

21 - 22 bar

MS 5%: movement starts

How? Where? Idling speed. Pressure gauge on the lowering brake CW 2.000 Initial current Raise Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? direction contact: no movement and 1 bar below the initial pressure.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: readjustment: 0 to +10 mA Luffing starts and stops without jerking.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1100/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At minimum speed: readjustment: 0 to +10 mA

Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +10 mA at minimum speed, otherwise correct the initial current.

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If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.011 Initial current Cylinder out CW 2.021 Initial current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Preconditions: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1100/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

During the turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

34 - 42 seconds for one rotation ideal: 39 seconds

Monitoring the C button

Final current Turn left / right

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Preconditions: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1100/2:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

- 74 -

Pump settings for LTM 1120/1

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 75 -

Final current

Initial current

What? Qmin

Special image 0.52 Pump adjustment PI proportion: Idling speed: slightly positive Full throttle: slightly negative

At what value? Pump pressure: 4-8 bar

The pump final current can not be established by the litre performance. That is why the final current is not set until maximum hoist gear speed.

How? Start engine; Selection image T/TK appears; pump not supplied with current Idling speed and full throttle Unscrew screw pump 2 and measure pressure. If n.i.O Screw Pump 1 in again. Screw in screw pump 2 again until pressure rises slightly Idling speed Attach plug pump 1 to pump 2. Attach plug pump 1 to pump 1.

1. Device: Delta P: 40 bar; from June 99: Delta P: 20 bar Always Control duration IN switching off not possible Preconditions: Empty hook, 4x reeved, 2 Tele at 100%

LTM 1120/1:

Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA

Where? Qmin screw.

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 76 -

Setting individual movements in the LTM 1120/1

Special image 0.52 Pump adjustment PI proportion: Near "-30 mA" after some program runs

100 - 110 m/min

Speed Raise / lower hoist gear

Attach chain or rope to the hook for example 10 m Full throttle and Fast mode Move MS Function to maximum With a 10 m chain, this movement may last for between 6 and 6,6 seconds.

Important: Direction contact: no movement at 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Output image A 4.0 to A 4.3: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: Example: Readjustment 3. Readjustment change: 0 to +10 mA at minimum without moving: +5 mA Readjustment without moving: speed, else correct initial current. +15 mA 4. at minimum speed the hook must start and stop without jerking. Also hook at eye level.

At what value? At very low speed: Readjustment: change: 0 to +10 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0 mA", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned. CW 2.106 Final current Pump 1 CW 2.108 Final current Pump 2

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Always Control duration IN switching off not possible Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1120/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 77 -

Final current Raise

What? Initial current Raise

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

CW 2.001 Final current Raise

Idling speed Move MS Function to maximum

20 -21 bar

MS 5%: movement starts

How? Where? CW 2.000 Initial current Raise Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? direction contact: no movement and 1 bar below the initial pressure.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

Special image 0.52 Pump adjustment PI proportion: Near "-30 mA" after some program runs

Final current Raise

Important: direction contact: no movement at 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Where? Idling speed CW 2.070 Initial current Raise Pressure gauge to P and LS pressure. Output image A 4.4: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: Example: Readjustment 3. Readjustment change: 0 to +10 mA at very low speed, without moving: +5 mA Readjustment without moving: else correct initial current. +15 mA 4. at very low speed the luffing must start and stop without jerking.

At what value? At very low speed: Readjustment change: 0 to +10 mA Luffing starts and stops without jerking.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1120/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

How? Idling speed Pressure gauge to P and LS pressure. Output image A 2.6 to A 2.7: 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value Special image 0.52 Pump adjustment PI proportion: Example: Readjustment 3. Readjustment change: 0 to +10 mA at minimum without moving: +5 mA Readjustment without moving: speed, otherwise correct the initial current. +15 mA Important: MS at direction contact: no movement. Start movement start immediately after direction contact, and stop again when deflecting back. The MS deflection should be less than for the hoist gear (no start at 5%, but less than that). Full throttle and fast mode Special image 0.52 Pump Move MS Function to maximum adjustment PI proportion: Near "-30 mA" after some program runs

At what value? At very low speed: Readjustment: change: 0 to +10 mA Small movement must be visible.

- 78 -

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.011 Final current Cylinder out CW 2.021 Final current Cylinder in

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

Preconditions: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1120/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed and fast mode Move MS function to maximum

During slow driving, the C button is selected and all steps 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

30 - 35 seconds for one rotation

Checking the C button

Final current Turn left / right

If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Preconditions: Empty hook, boom: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1120/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

- 79 -

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 80 -

Litre performance of the pump over the winch speed: LTM 1120/1: 37 - 43 RPM ideal: 41 RPM

Final current

Full throttle and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image "Setting values Winch 1" Attach plug pump 1 to pump 2. Raise MS move to maximum and observe speed. Attach plug pump 1 to pump 1. Raise MS hoist gear, move to maximum and observe speed. Set CW 2.091 back to the output value!

Control duration IN:: Idling speed (CW 2.102 = 2) Attach plug pump 1 to pump 2. Special image PI-proportion:: Attach plug pump 1 to pump 1. readjustment +3 to +8 mA

Pump pressure: 14 -18 bar

Start of adjustment (1st variant)

How? Pull out both plugs. Idling speed and full throttle Screw out the screw Pump 2 and measure pressure. If n.i.O Screw Pump 1 in again. Screw in screw pump 2 again until pressure rises slightly Idling speed Attach plug pump 1 to pump 2. Move MS Lower and measure pump pressure. Attach plug pump 1 to pump 1. Move MS Lower and measure pump pressure.

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment, only if deviation > +/- 30 mA Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 mA Pump 2:Change CW 2.106, if setup is ended, transfer value in CW 2.108. Pump 1: Change CW 2.106.

Where? Qmin screw.

Control OUT (CW 2.102 = 1) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 20 bar

Pump settings for LTM 1120/1

This setting applies only from Muli 20 only the following cranes can be set in this way: 23305, 23315, 23725, 67025, 67056

LTM 1120/1: only from Muli 20

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 81 -

Special image "Setting values Full throttle and fast mode Winches": 53-60 RPM Move MS Function to maximum

Speedcontrol Raise / lower hoist gear

Important: Deflect MS approx. 20% until controlled. Back to direction contact: no movement at 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Special image "Hoist gear / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +20 mA at minimum speed, else correct initial current. 4. At minimum speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: readjustment: 0 to +20 mA Hook starts and stops without jerking.

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

Setting individual movements in the LTM 1120/1

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

LTM 1120/1: only from Muli 20

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 82 -

Final current Raise

What? Initial current Lower

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

Final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing.. At further 5% deflection, movement must start at minimum and stop again when deflected back.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 Final current Raise

How? Where? Idling speed. Pressure gauge to P and LS pressure. CW 2.070 Initial current Raise Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. at very low speed movement must start and stop without jerking.

CW 2,001 Final current Lower

Idling speed Move MS Function to maximum

20 -21 bar

MS 5%: movement starts

How? Where? CW 2.000 Initial current Raise Idling speed. Pressure gauge on the lowering brake Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? direction contact: no movement and 1 bar below the initial pressure.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: readjustment: 0 to +20 mA Luffing starts and stops without jerking.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1120/1: only from Muli 20

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

Final current Tele in / out

What? Initial current Tele in / out

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: readjustment: 0 to +20 mA

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

- 83 -

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. The MS deflection should be less than for the hoist gear (no start at 5%, but less than that). Full throttle and fast mode CW 2.011 Initial current Cylinder out Move MS Function to maximum CW 2.021 Initial current Cylinder in

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +20 mA at very low speed, otherwise correct the initial current.

Preconditions: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

LTM 1120/1: only from Muli 20

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

During the turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

36 -39 seconds for one rotation

Checking the C button

Final current Turn left / right

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.058 Final current Turn right CW 2.059 Final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Preconditions: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1120/1: only from Muli 20

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

- 84 -

Pump settings for LTM 1150/1

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 85 -

Litre performance of the pump over the winch speed: LTM 1150/1: 37 - 43 RPM ideal: 41 RPM

Final current

Full throttle and Fast mode. Raise HW 1 Slide fully on: CW 2.091: +100 mA Special image "Setting values Winch 1" Attach plug pump 1 to pump 2. Raise MS move to maximum and observe speed. Attach plug pump 1 to pump 1. Raise MS hoist gear, move to maximum and observe speed. Set CW 2.091 back to the output value!

Control duration IN:: Idling speed (CW 2.102 = 2) Attach plug pump 1 to pump 2. Special image PI-proportion:: Attach plug pump 1 to pump 1. readjustment +3 to +8 mA

Pump pressure: 14-18 bar

Start of adjustment (1st variant)

How? Pull out both plugs. Idling speed and full throttle Screw out the screw Pump 2 and measure pressure. If n.i.O Screw Pump 1 in again. Screw in screw pump 2 again until pressure rises slightly Idling speed Attach plug pump 1 to pump 2. Move MS Lower and measure pump pressure. Attach plug pump 1 to pump 1. Move MS Lower and measure pump pressure.

Start of adjustment (2nd variant) Can also be used for monitoring.

At what value? Pump pressure: 4-8 bar

Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 mA Pump 2:Change CW 2.105, if setup is ended, transfer value in CW 2.107. OR: Adjustment screw Start of adjustment pump 2, only if deviation > +/- 30 mA Pump 1: Change CW 2.105. OR: Adjustment screw Start of adjustment pump 1, only if deviation > +/- 30 mA Pump 2:Change CW 2.106, if setup is ended, transfer value in CW 2.108. Pump 1: Change CW 2.106.

Where? Qmin screws.

Control OUT (CW 2.102 = 1) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

What? Qmin

Delta P: 20 bar

LTM 1150/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 86 -

Special image "Setting values Full throttle and fast mode Winches": 53-60 RPM Move MS Function to maximum

Speedcontrol Raise / lower hoist gear

Important: Deflect MS approx. 20% until controlled. Back to direction contact: no movement at 5% deflection, movement must start at minimum and stop again when deflected back. Test this with repeated movements to and fro. Full throttle and fast mode Move MS Function to maximum

How? Idling speed. Vibrator in! Pressure gauge to P and LS pressure. Special image "Hoist gear / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +20 mA at minimum speed, else correct initial current. 4. at minimum speed the hook must start and stop without jerking. Also hook at eye level.

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: readjustment: 0 to +20 mA Hook starts and stops without jerking.

2.091 Final current Raise hoist gear 1 2.093 Final current Lower hoist gear 1 2.111 Final current Raise hoist gear 2 2.113 Final current Lower hoist gear 2 If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW CW CW CW

Where? CW 2.090 Initial current Raise hoist gear 1 CW 2.092 Initial current Lower hoist gear 1 CW 2.110 Initial current Raise hoist gear 2 CW 2.112 Initial current Lower hoist gear 2

Control IN (CW 2.102 = 0) Preconditions: Empty hook, 4x reeved, boom: 65 degrees, Tele 1 and 2 at 100%, C-button: 100%

Setting individual movements in the LTM 1150/1

Final current Raise / lower hoist gear

What? Initial current Raise / lower hoist gear

LTM 1150/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

- 87 -

final current Raise

What? Initial current Lower

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

final current Raise

Full throttle and fast mode Move MS Function to maximum

Important: MS at direction contact: no luffing.. At further 5% deflection, movement must start at minimum and stop again when deflected back.

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

CW 2.071 final current Raise

How? Where? Idling speed. Pressure gauge to P and LS pressure. CW 2.070 Initial current Raise Special image "Luffing / pump adjustment PI proportion" Set the hook on the ground at a slight angle. 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3.Readjustment: 0 to +10 mA at very low speed, else correct initial current. 4. At very low speed movement must start and stop without jerking.

CW 2.001 final current Lower

Idling speed Move MS Function to maximum

20-21 bar

MS 5%: movement starts

How? Where? Idling speed. Pressure gauge on the lowering brake CW 2.000 Initial current Raise Set the hook on the ground at a slight angle. 1. At what pressure does the movement start? for example 11.5 bar 2.There should then be 1 bar less pressure at the direction contact, for example 11.5 bar - 1 bar = 10.5 bar At 5% MS deflection the movement should start without jerking and be close to the pressure for example 11.5 bar

At what value? direction contact: no movement and 1 bar below the initial pressure.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

At what value? At very low speed: readjustment: 0 to +20 mA Luffing starts and stops without jerking.

Preconditions: Empty hook, 4x reeved, Tele 0%, C-button: 100%

What? Initial current Raise

LTM 1150/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Kundendienst: juh1 / 04.07.2004

Liebherr-Werk Ehingen GmbH

Final current Tele in / out

What? Initial current Tele in / out

LTM 1150/1:

Special image PI-proportion: readjustment near "0" 0 to +5 mA after some program runs

At what value? At very low speed: readjustment: 0 to +20 mA

Where? CW 2.010 Initial current Cylinder out CW 2.020 Initial current Cylinder in

- 88 -

If the readjustment to the change in the final current is not brought near to"0", then first check the lift stop of the slide. If this is not successful, then the pressure balance must be turned.

Important: MS at direction contact: no movement. Movement must start soon after direction contact, and stop again when deflecting back. The MS deflection should be less than for the hoist gear (no start at 5%, but less than that). Full throttle and fast mode CW 2.011 Initial current Cylinder out Move MS Function to maximum CW 2.021 Initial current Cylinder in

How? Idling speed. Pressure gauge to P and LS pressure. Special image "Telescoping / pump adjustment PI proportion" 1. At what mA does the LS pressure occur (change at approx. 5 bar)? 2. Set initial current to this value 3. readjustment: 0 to +20 mA at very low speed, otherwise correct the initial current.

Preconditions: Empty hook, 4x reeved, boom: 65 degrees, all Tele 0%, Tele 1 bolt with cylinder, activate manual telescoping Caution: When telescoping, do not drive into the reduction, otherwise the speed will get slower

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / 04.07.2004

How? Idling speed. Vibrator on. 1. At what mA does the turning start and stop. 2. Set initial current to this value. 3. MS at direction contact: No movement. 4. At further 5% MS deflection, movement must start at minimum and stop again when deflecting back. Full speed Move MS function to maximum

During the turning, the C button is selected and all steps 100% - 80% - 60% - 40% - 20% are checked. At every step, a change in speed must be detectable.

At what value? At 5% MS deflection the turning starts and stops.

36 -39 seconds for one rotation

Checking the C button

Final current Turn left / right

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If the speed is not reached for the change in final current, then the lift stop of the slide must be checked first. If this is not successful, then the pressure balance must be turned.

CW 2.058 final current Turn right CW 2.059 final current Turn left

Where? CW 2.056 Initial current Turn right CW 2.057 Initial current Turn left

Preconditions: 65 degrees, Tele 0%, DW built in, C-button: 100%

What? Initial current Turn left / right

LTM 1150/1:

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Adjustment pr ograms pro (Superstructure)

LTM 1090/3 First page

To Index

LIEBHERR

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

History Release:

Date:

Name:

Description:

27.02.03

Lock

Document: Reason for change: Introduction from device no.: Document: Reason for change: Introduction from device no.:

Adjustment programs OW LTM 1090/3 Version 0000 new From 1st device

Index INDEX .................................................................................................................................... 92 GENERAL PROCEDURE AT START OF ADJUSTMENT AID ..................................... 93 TO ACTIVATE THE ADJUSTMENT AID ............................................................................................ 93 REMARKS ............................................................................................................................... 94 START AND OPERATION OF ADJUSTMENT AID ............................................................................... 95 ERROR DISPLAY ....................................................................................................................... 98 ADDITIONAL DESCRIPTION OF ADJUSTMENT SURFACE ................................................................... 98 DESCRIPTION OF ADJUSTMENT PROGRAMS .......................................................... 99 ADJUSTMENT PROGRAM PUMP 1/ 2 ........................................................................................... 99 ADJUSTMENT PROGRAM TELESCOPE ........................................................................................ 101 ADJUSTMENT PROGRAM SLEWING GEAR ................................................................................... 102 ADJUSTMENT PROGRAM HOIST GEAR ....................................................................................... 103 ADJUSTMENT PROGRAM LUFFING GEAR .................................................................................... 104 ADJUSTMENT VALUES ................................................................................................... 108

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

General procedure at start of adjustment aid To activate the adjustment aid After starting the crane and booting up the LICCON, the F key must first be released to be able to start the visualization of the adjustment aid. This is done by entering the day code and

then MODIFY F key

from STATUS locked to released

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Then press the END key 2x and take over the change

with ENTER. This release of the F key remains valid until this adjustment is reset to locked or in case of a cold boot. After completed adjustment of the crane, the F key must be reset to locked to prevent unauthorized use.

Remarks When starting the adjustment programs, the master switches must be in resting position, the crane must be in a valid operating mode without accessories on the boom (folding jib, fly jib, luffing jib) and must be operational. The required starting position is described in individual modes. The nominal deflection of the master switch is shown on the LICCON monitor. The described adjustment programs are not continued if the master switch is deflected other than shown. The adjustment programs must be run through completely, i.e. a program interruption and subsequent continuation is not possible. (Note: When leaving the visualization of the adjustment aid by pressing another program key, the currently running adjustment is discontinued.)

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Start and operation of adjustment aid After release of the F key, the adjustment aid can be started by pressing the F key on the monitor. The visualization view of the adjustment aid is configured and the individual implemented adjustment programs are operated by pressing the corresponding function keys.

The selection of the various implemented adjustment programs is made by the following function keys of the activated adjustment aid. or

A new adjustment program is selected by pressing the selection keys. The corresponding selection is shown by a border around the symbol. After selection direction, the next symbol is selected in direction of the arrow.

At selection direction

With the function key the selected adjustment program will be started. The selected adjustment program is now running. This is shown by the blinking selection symbol.

the running adjustment program can be stopped or discontinued at any time. A continuation on the break point in the program is not possible.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation the completion message in the selected symbol, or the error message in the selected symbol in case of an error in the adjustment program will be deleted.

Display completion message / fault indicator

Display deleted via RESET, a restart of the selected adjustment program is only possible after deleting the completion message or the fault indicator.

If the selected adjustment program, through observation of the required starting conditions (see description of individual item) has been started with the RUN key, the selection system blinks and no „F “ is entered into the selection symbol, then the selected adjustment program is running. In the symbols of the master switches, a blinking deflection command (differs depending on the selection of the adjustment program) appears. Assignment of master switches

Description MS2 MS3 Arm restsleft (Opt. Position in superstructure foot pedal)

MS1 right

A blinking deflection command means that the corresponding master switch must be deflected into the corresponding direction, so that the adjustment program is executed (an incorrect deflection can cause termination of the adjustment program). If the corresponding master switch is then deflected correctly, the blinking deflection command changes into a non-blinking deflection command. This makes it clear that the deflection is now correct. This condition must be retained until another command in the symbols of the master switches appears. In doing so, the following conditions can occur.

Do not deflect master switch (resting position)

Deflect indicated master switch to the left

Deflect indicated master switch to the right Free run mode, the master switch can be deflected to the left or right, as desired. This is done to briefly test the adjusted values before acceptance Deflect indicated master switch to the front Deflect indicated master switch to the rear Free run mode, the master switch can be deflected to the front or rear, as desired. This is done to briefly test the adjusted values before acceptance. Note: In the Telescope adjustment program, from LTM 1090/ 3 on, no additional 2nd movement (as for others models) must be actuated. This will also be implemented in other models via corresponding software updates.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

If the adjustment program run has completed without errors, then this is shown on the visualization by the blinking display Test OK above the F7 function key. Deflection display master switch or

blinking +

=

free run mode selected item

From this point on, the adjusted item can be run for testing with the currently found values (free run mode). If the found adjustment is to be accepted, then the F7 key (Test OK) must be pressed to take over the found adjustment values as new correction values. If this was successful, then a O will appear in the icon of the run movement. Marking of successfully run movement with acceptance of new corrections

From this point on, the just determined correction values are utilized. If no acceptance of the correction values has been made via the F7 key, then the old values remain valid and unchanged. In the icon of the run item, no O is entered. The display „O“ in the icon of the item to be run must be deleted via RESET before restarting the item ( see previous page). If the crane control is OFF, the indication „O“ (Test OK) in the icon is not deleted. This shows which items have already been adjusted successfully.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Error display Error adjustment program slewing gear at program start or during adjustment run Error description in error stack HC11 ZE0 Possibly occurring errors at the start of the adjustment program or during the adjustment are signalized in the icon of the run item with an „F“, the exact error is entered in the error stack, where is can be called up. A direct change into the error stack is not possible. The errors of the listed adjustment programs can be found in the designated error stacks. (Note: Occurring errors almost always lead to program termination). Error at slewing gear adjustment Error at pump adjustment Error at hoist gear 1 adjustment Error at hoist gear 2 adjustment Error at luffing gear adjustment Error at telescopic adjustment

Error stack HC11 ZE0 Error stack HC11 ZE2 Error stack HC11 ZE2 Error stack HC11 ZE2 Error stack HC11 ZE2 Error stack HC11 ZE1

If an error has occurred, then there is also the possibility to change into the crane view, to get from there into the corresponding error stack. However, this possibility only works if no other error than the current error from the adjustment program is present, otherwise the program changes into the incorrect error stack. In this case, it makes more sense to change into the designated error stack. Any errors which had occurred are gone after deletion of the error stack or after crane control OFF. However, the deletion of the error stacks when the LICCON is running does not delete the display „F“ in the icon of the corresponding symbol. This display must be deleted via RESET before restarting the item (see previous page). If the crane control is OFF, the error display „F“ in the icon is automatically deleted.

Additional description of adjustment surface The described functions regarding start and operation of the adjustment surface of all implemented adjustments programs are basically the same. Only the adjustment program luffing gear [provides an additional new adjustment mode (from LTM 1090/ 3), which is described in detail in the description of the individual adjustment programs. Additional descriptions for the same operation in other items are not meaningful and not necessary.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Description of adjustment programs Adjustment program Pump 1/ 2 Starting position/ Starting conditions: • • • • • • • • • •

Master switch hoist gear 1 may not be deflected At least 1 hoist limit switch is active No hoist limit switch may report an error Selected winch 1 must be free (not locked) For winch 1: Speed C-key 100% “Length sensor 1” and “angle sensor T bottom” must be active and error free minimum 4* reeved maximum 4to hook load for LTM 1090/3 (2to or 2,5to for other models) Tele length extended by a minimum of 2* 100% (100% T3 + 100% T4, or 92% T2 +92% T3 + 46% T4) Tele angle >67 degrees, (as for the LTM 1100, the tele angle must be > 67 degrees)

Production adjustment. The pump adjustment program can also be run in production (without rope and boom and without chassis). For this production adjustment, certain control bits must be set via the LICCON so that the corresponding program run can be matched to the production condition (in that case, certain inquiries are not processed and / or certain conditions are not taking into account). After the LICCON is turned off, the completed production adjustments are reset.

Program run (LTM 1090/3, pressure cut off and sensor test is carried out before spooling out the rope): • • • • • • • • • •

• • • •

Lift hoist gear until STOP via Hoist top (slowly run against the hoist top limit switch or release the master switch. When the master switch is released, the program continues with the next step). Run hoist gear down until the shut off point before hoist top is encountered. (Display MS deflection = 0 and master switch is in 0 position) Deflect master switch up (but no movement is triggered), check pressure cut offs pump 1 + 2 and function P pressure sensor Deflect master switch up at closed brake, check function pressure sensor LS Lift and lower hoist gear, check incremental sensor counting direction Run hoist gear down until the required rope length is spooled out, (display MS deflection = 0 and master switch in 0 position) Check Q min with master switch in 0 position and RPM increase to maximum RPM Determine initial flow P1 depending on Qmin Determine initial flow P2 depending on Qmin Adjust end flow P1 with hoist gear 1up , (Procedure: Run limits and preadjust end flow. Give full throttle via adjustment program, run hoist gear down until the required rope length is spooled out again, run hoist gear up again while taking flow adjustment of pump, for flow adjustment several run cycles are possible until the required pump flow is set). Spool out rope length for end flow determination of pump 2 Adjust end flow P2 with hoist gear 1 up, (procedure exactly the same as for end flow pump 1). “Free run mode” to check the determined values Take over the determined correction values by pressing the blinking key (F7) “Test OK” or terminate through another selection, by pressing the STOP key (F4) or by leaving the adjustment help visualization (in case of termination no takeover of determined correction values, this is done solely by pressing the blinking key (F7)) “Test OK”.

Explanation to program runs: The program content for other models is principally the same. Only the program run is different. For other models, the rope must first be spooled out to the required length and only then the pressure cut off and the sensor test can be carried out. On the LTM 1090/3, the pressure cut off pump and sensor test is run before spooling out the required rope. The pumps 1 + 2 on the LTM 1090/3 are set for quantity. The adjustment for other models is set to 95% of the pump volume from the drive calculation.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Determination values initial flows for pump 1 + 2: Qmin must be >= 2bar and <= 15 bar, otherwise termination because no pump adjustment is possible without a valid Qmin. P pressure at initial flow adjustment: current Qmin on crane + 9 bar = initial pressure (present increase). Peculiarity: if the initial pressure is higher than delta P – 5 bar, then the constant pressure delta P – 5 bar is used as initial pressure for initial flow adjustment. Initial flow adjustment is made at: >= Initial pressure and <= initial pressure + 2 bar (present tolerance). Note: The pump adjustment program for the LTM 1090/ 3 is terminated at a temperature of less than 30 degrees Celsius and of more than 70 degrees Celsius and a corresponding error is issued. From experience, an adjustment outside this permissible range is not meaningful and has therefore been limited through the determination of this temperature range. This necessitates therefore a certain warm up phase before adjustment . However, the best adjustment values are still obtained at a temperature of ca. 50 degrees Celsius. The pump adjustment can only be carried out with hoist gear 1. Winch 2 cannot be used for the pump adjustment. On machines with hoist limit switch 4, this hoist limit switch 4 is assigned to winch 2, which means if winch 1 is operated with hoist limit switch 4, then the pump adjustment program does not continue (when triggering the hoist limit switch, it does not switch over into the down direction, since hoist limit switch 1 is expected and hoist limit switch 4 switches, the shut off of the movement is made in this case by the LMB and not through the adjustment program). Only when winch 1 is also operated with hoist limit switch 1, will the pump adjustment program run properly. In the future, a separate error will be defined for this operating case, so that the described error can be localized more easily. The pressure which was determined in ‚pressure cut off‘ pumps will be archived in the following file descriptions (CPU2): • Pressure cut off pump 1: DW4.121 • Pressure cut off pump 2: DW4.122 • Nominal value - pressure cut off pump: DW4.72

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Adjustment program Telescope Starting position/ Starting conditions: • Master switch telescope may not be deflected • At least 1 hoist limit switch is active • No hoist limit switch may report an error • Luffing switch on position telescoping with 2 winch units • “Length sensor 1” and “angle sensor T bottom” must be active and error free • minimum 4* reeved • maximum 4to hook load for LTM 1090/3 (2to or 2,5to for other models) • Tele length for LTM 1090/3 = 0% pinned in telescope 5, (Note: For other models 2* 100% extended. Example: 100% T3 + 100% T4, or 92% T2 +92% T3 + 46% T4, if possible always use the outermost telescopes) • Cylinder length for the LTM 1090/3 must be <= 10%. • Tele angle >67 degrees, (as for the LTM 1100, the tele angle must be > 67 degrees) • Telescoping switched to manual operation (before start of test) • Cylinder and tele pinned on track, otherwise run OUT/ IN in manual operation. Program run: • • • • • • • • • • •

Check pressure cut off telescope out (with pinned tele). Check pressure cut off telescope out (with pinned tele). Unpin cylinder manually with luffing switch in roof console Clear tele pinning by telescoping out (if necessary) Check telescoping cylinder telescope in / out ( to approx. 50%), then telescope out, check length sensor Set initial current telescoping in via pressure increase LS side Set initial current telescoping out via pressure increase LS side Determine end flow Tele in Determine end flow Tele out “Free run mode” to check the determined values Take over the determined correction values by pressing the blinking key (F7) “Test OK” or terminate through another selection, by pressing the STOP key (F4) or by leaving the adjustment help visualization (in case of termination no takeover of determined correction values, this is done solely by pressing the blinking key (F7)) “Test OK”.

Determination values initial flows: Initial flow adjustment is made at LS pressure>= 22bar and <= 32 bar, (present tolerance +10 bar up). Determination of maximum tele quantity by LS program and adjustment of readjustment to these values Remark: For the adjustment of telescoping end flows via readjustment on the LTM 1090/3, a permissible adjustment range of –5 ...+12 is presently used (as on all other models with end flow adjustment via readjustment).

Note: The determined pressures in ‚pressure cut off‘ are archived in the following file descriptions (CPU1): • Pressure cut off TELESCOPING OUT: DW4.121 • Pressure cut off TELESCOPING IN: DW4.122 • Nominal value - pressure cut off TELESCOPING OUT: DW4.105 • Nominal value - pressure cut off TELESCOPING IN: DW4.106

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Adjustment program Slewing gear Starting position/ Starting conditions: • “Length sensor 1” and “angle sensor T bottom” must be active and error free • No hoist limit switch may report an error, at least 1 hoist limit switch active • Master switch may not be deflected • Seat contact must be actuated • The working range limitation may not be active • The slewing platform may not be pinned • maximum 4to hook load for LTM 1090/3 (2to or 2,5to for other models) • Tele angle: 67...85 degrees • Tele fully telescoped in 0% • Slewing range must be clear, which means slewing by 360° must be possible

Production adjustment. The slewing gear adjustment program can also be run in production (without rope and boom and without chassis). For this production adjustment, certain control bits must be set via the LICCON so that the corresponding program run can be matched to the production condition (in that case, certain inquiries are not processed and / or certain conditions are not taking into account). After the LICCON is turned off, the completed production adjustments are reset. Program run: • Check the incremental encoder • Initial flow right (via movement begin) • Initial flow left (via movement begin) • End flow right • End flow left • “Free run mode” to check the determined values • Take over the determined correction values by pressing the blinking key (F7) “Test OK” or terminate through another selection, by pressing the STOP key (F4) or by leaving the adjustment help visualization (in case of termination no takeover of determined correction values, this is done solely by pressing the blinking key (F7)) “Test OK”.

Note: If the maximum required slewing speed is not reached, or there is no appreciable increase in speed in the upper master switch deflection range after the adjustment, then the back up pressure to the hydraulic oil tank should be checked. The resulting circulation pressure influences the slewing gear speed.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Adjustment program Hoist gear Starting position/ Starting conditions: • At least 1 hoist limit switch is active • No hoist limit switch may report an error • Selected winch must be free (not locked) • For selected winch: Speed C-key 100% • “Length sensor 1” and “angle sensor T bottom” must be active and error free • Master switch may not be deflected • Seat contact must be actuated • minimum 4* reeved • maximum 4to hook load for LTM 1090/3 (2to or 2,5to for other models) • Tele length must be extended at least 2* 100% • Tele angle 67... 80 degrees Program run: • Hoist gear up until STOP (via Hoist top or master switch: When the master switch is released, the program continues with the next step). • For down, check incremental encoder counting direction • For closed brake, actuate down and up and check pressure cut offs (Nominal pressure: see data descriptions below (DW´s), tolerance +/-10bar, (except LTM1060/2 due to pretension valve +15bar). • Lower initial flow (via movement begin) • Raise initial flow (via movement begin) • Lower / raise end flow (via readjustment) • “Free run mode” to check the determined values • Take over the determined correction values by pressing the blinking key (F7) “Test OK” or terminate through another selection, by pressing the STOP key (F4) or by leaving the adjustment help visualization (in case of termination no takeover of determined correction values, this is done solely by pressing the blinking key (F7)) “Test OK”. Note: The determined pressures in ‚pressure cut off‘ are archived in the following file descriptions (CPU2): • Pressure cut off UP: DW4.121 • Pressure cut off DOWN: DW4.122 • Nominal value - pressure cut off UP: DW4.118 • Nominal value - pressure cut off DOWN: DW4.119

CAUTION!!! For operation, the direction of the arrow given on the LICCON monitor shows the deflection direction of the corresponding master switch, not the expected hook direction!!!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Adjustment program Luffing gear Starting position/ Starting conditions: • At least 1 hoist limit switch is active • No hoist limit switch may report an error • Speed C-key 100% • “Length sensor 1” and “angle sensor T bottom” must be active and error free • Master switch may not be deflected • Seat contact must be actuated • maximum 4to hook load for LTM 1090/3 (2to or 2,5to for other models) • Telescope fully telescoped in Program run: • luffing up, check angle sensor direction • luffing up until LMB shut off • Continue to luff up under ‚MONTAGE‘ until BLOCK, check pressure cut off (nominal pressure: see adjustment values, tolerance +/-10bar) • Luff down to approx. 35° • Initial current luffing up (via pressure change) • Initial current luffing down (via movement begin), preferred method from LTM 1090/3 on, new adjustment mode initial flow adjustment via lowering brake pressure is made via monitor, in this case a pressure gauge must be connected onto the lowering brake. By changing the initial flow, the pressure changes on the pressure gauge. Initial flow when reaching a certain pressure is +/- tolerance. This pressure is normally determined, set and fixed in the adjustment guidelines by Crane Acceptance. A detailed description of new adjustment possibilities will be added to the general description of the adjustment program luffing gear. • End flow luffing up (via readjustment) • End flow luffing down (via time), preferred method from LTM 1090/3 on, new adjustment mode end flow adjustment via lowering brake pressure is made via monitor, in this case a pressure gauge must be connected onto the lowering brake. By changing the end flow, the pressure changes on the pressure gauge. End flow when reaching a certain pressure is +/- tolerance. This pressure is normally determined, set and fixed in the adjustment guidelines by Crane Acceptance. The function of end flow adjustment luffing down is the same as initial flow adjustment luffing down. • “Free run mode” to check the determined values • Take over the determined correction values by pressing the blinking key (F7) “Test OK” or terminate through another selection, by pressing the STOP key (F4) or by leaving the adjustment help visualization (in case of termination no takeover of determined correction values, this is done solely by pressing the blinking key (F7)) “Test OK”. Note: The pressure which was determined in‚pressure cut off LUFFING UP‘ will be archived in the following file descriptions (CPU2): • Pressure cut off LUFFING UP: DW4.121 • Nominal value - pressure cut off LUFFING UP: DW4.124

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Operation pressure adjustment mode for initial flow and end flow luffing down The adjustment aid of the LTM 1090/3 offers a new way to adjust the luffing gear. After successful start of the luffing gear adjustment program, the visualization shows a new icon with the description MODE (view 1). If the function key F8 underneath it is not pressed, then the luffing down adjustment (Initial and end flow) is made as before via movement recognition and timing tests. However, if the function key F8 is pressed (with running adjustment program luffing gear and available view 1), then view 2 is set up after pressing the function key, and the new MODE Adjustment is selected via pressure. At this point in time it is assumed that a pressure gauge is connected to the lowering brake. . View 1:

View 2:

The deflection of the master switch must be made as shown on the LICCON monitor, so that the pressure cut off with boom in steep position and starting position for initial flow adjustment can be run (as before). The subsequent initial flow adjustment luffing up is carried out the same way as before (pressure change). After successful initial flow adjustment luffing up the initial flow adjustment luffing down is made. View 3 appears on the LICCON monitor and the control command luffing down. On the monitor, the text is shown “initial flow Start at KW =0”. If now the master switch is deflected correctly, then the output luffing down is actuated with a calculated correction value of 0 mA. If one checks the pressure gauge on the lowering brake, then a pressure increase is visible, which in this case (estimated) is still below the required initial pressure of approx. . 10.5 bar +/- 0.5 bar . A movement can also not be recognized. The operator can now directly change the initial flow by pressing the + or – key (F1 or F2) (+ = higher flow, - = lower flow). A change of initial flow also affects a change of visible pressure on the pressure gauge. For example, if the flow has been increased or decreased into the incorrect direction, then it can be reset to the correction value 0 by pressing the RESET key (F5). The program can be stopped at any time by pressing the STOP key (F4) (operation as in all other programs). If the EXIT key (F8) is pressed, then the adjustment mode pressure adjustment is exited and the adjustment of the initial flow luffing down is made through movement. A return into the pressure adjustment mode is no longer possible. If the operator has now set the required pressure (by pressing + or - , then the operator must press the WERT OK key (F7). By pressing the key, the adjusted correction value of the initial flow luffing down is saved and the procedure continues. . First the position < 15 degree is selected, to continue with the end flow adjustment luffing up.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation The view on the LICCON monitor changes to condition of view 4. This shows the operator that pressing the previously shown and utilized function keys has no effect (control during other movements and procedures without effect View 3

View 4

After completed first luffing up to determine the end flow luffing up, the LICCON monitor changes to view 5 and continues first with the end flow luffing down.

View 5:

View 6:

Via the text “End flow Start at KW = 0” is shown that the end flow luffing down is being set. The operation is the same as for initial flow adjustment. Only in this case another pressure is set on the pressure gauge and the boom luffs down. The control keys + or – should be pressed quickly, since it discontinues at approx.15 degrees and it must then be luffed up again first (see view 6). By correctly deflecting the master switch, the upper starting position is reached at approx. 70 degrees. Then it switches back to view 4 and the adjustment of end flow luffing down is continued with the same correction value (as used before). The adjustment of the end flow luffing down can be expanded to 4 luffing down cycles. Then the end flow should have been found, otherwise the program will be discontinued. If the operator has now set the required pressure (by pressing + or - , then the operator must press the WERT OK key (F7). By pressing the key, the adjusted correction value of the initial flow luffing down is saved and the procedure continues. . First the position < 15 degree is selected, to continue with the end flow adjustment luffing up. The view on the LICCON monitor changes to condition of view 6View 6 shows the operator that the pressure adjustment mode is completed. The normal adjustment program luffing continues by actuating the lower position to adjust the end flow luffing up. The deflection indication changes the direction, deflect master switch luffing up. If the end flow luffing up has been determined the LICCON monitor changes to show view 7. By the double arrow in the master switch symbol, the operator can see that he can recheck the found adjustment values in the free run mode.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation By taking over the determined correction values by pressing the blinking “Test OK” key (F7), view 8 will appear. The completion report for luffing gear is entered in the symbol, the adjustment program is now successfully completed. In case of interruption by another selection or by pressing the ‚STOP‘ key (F4) or by leaving the adjustment aid visualization, no takeover of the determined correction values is made, this happens solely by pressing the blinking “Test OK” key (F7). View 7:

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

View 8:

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Adjustment values LTM 1090/3

Slewing gear End flow

Nominal value 1,85 Rpm

Tolerance + 0,1 /- 0,10 U/min

Nominal value 320 bar -8... +10

Tolerance +/- 10 bar

33,8 sec

+/- 2 sec

Luffing gear Pressure cut off luffing up: Readjustment luffing up Medium value of 30... 50°) Speed luffing down (65... 25°) Quantity luffing up (pressure balance) Quantity luffing up (LS- Program)

260

Hoist gear Pressure cut off HW1 up Pressure cut off HW1 down Pressure cut off HW2 up Pressure cut off HW2 down Readjustment Winch turning speed HW1 Winch turning speed HW2 Quantity up (pressure balance) Quantity up (LS- Program) Quantity down (pressure balance) Quantity down (LS- Program)

Nominal value 340 bar 130 bar 340 bar 130 bar -10... +8 2 Pumps 47... 57 2 Pumps 47... 57

Tolerance +/- 10 bar +/- 10 bar +/- 10 bar +/- 10 bar

360 360

Pump Pressure cut off End flow adjustment with empty hook

Nominal value 365 bar At 50 degrees Celsius to 210l/ Pump =420l Ges.

+/- 10 bar +/- 1,5%

Telescope Nominal value Telescope telescoping out 140 bar Telescope telescoping in 270 bar Readjustment -5... +12 Quantity telescoping out pressure balance) Quantity telesc. out (LS- Program)

Tolerance +/- 10 bar +/- 10 bar

428

Quantity telesc. in (pressure balance)

Quantity telesc. in (LS-Program)

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

160

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

LIEBHERR - variable displacement twin pump Typ. LPVD 45 - 140 EL DA T1

V2 V1

T2 Z

A1 P1

A2 G

P2

Design and function The variable displacement twin pump consists of two individual pumps of axial piston swash plate design which can be controlled independently from one another. Both pumps (P1/P2) are driven by the Diesel engine through a disconnectable or a direct con- nection. Due to the adjacent location of the cylinders and swash plates, the sens of rotation of pump (P2) is opposed to that of pump (P1). The supply of both pumps is realized via a joint suction connection of connecting housing (G) and they are feeding individual working circuits of the hydraulic svstem via pressure connections (Al/A2). The leakage oil of both pumps is led by a separate leakage pipe directly to the hydraulic tank. The variation angle and thus the displacement of the pumps is controlled by the solenoid valves and regulators of the control units (V1/V2). For the control oil pressure supply, the above version also features a gear pump (Z) located adjacent to pump (P2) and which is driven by the drive shafts of pumps (P1/P2). Putting into service: Remove screw plugs (T1/T2) and fill pump housing with specified hydraulic oil (see table of lubricants).

EL = electric variation DA = pressure cut-off Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Prequisite: Pump drive in action A) Function: min. pump variation angle lf variation solenoid (1) is in idle position (currentless), the control piston (2) is pressed by the resilience of control spring (3) to the right (to the solenoid). This relieves the piston area (K) of the regulating piston (7) via control board (S1) of the control piston (2) towards the tank. At a control pressure (Px = 45 bar) acting on the regulating ring area (R), the regulating piston (7) retains the variable displacement pump in neutral position = min. variation angle. At this stage, the pump circulating pressure is approx. 5 to 12 bar. B) Function: Start of variation - pump working pressure On activating variation solenoid (1) with approx. 200 mA, the actuation pin (1), against the resilience of control spring (3), causes a displacement of control piston (2) until the start of variation, adjusted at regulating screw (y) is atteint. This causes the admission of working pressure to the regulating piston area (K) via the control edge (S2) of control piston (2). Thus, control piston (7) causes a min. variation of the pump and is retained in the preselected position by guiding piston (5) and pivot (6). At this stage, the pump working pressure (min) is approx. 16 to 20 bar. C) Function: Min. to max. pump variation angle When activating variation solenoid (1) with 200 to 700 mA, the control piston (2) continues working pressure to be applied to the regulating piston area (K) via contrel board (S2) and the pump. The position of the pump is led back via pivot (6) ascounter-force on control spring (4) and is acting, via control piston (2) against the solenoid force. Note: The measuring connection (MA 1/2) only allows checking of the adjusting pressure (Pst)! D) Function: Pressure cut-off The pressure cut-off valve (8) serves as pump protection. At the response of the pressure cut-off valve, the pump activation is interrupted and thus returned to Q-min. The cut-off pressure, adjusted at the regulating screw (z), is approx. 20 to 50 bar beyond the max. operating pressure. Note: The cut-off pressure has been adjusted at the factory and should not be deregulated.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Functional description LPVD 45 - 140 EL DA Variable displacement pump (P1)

Control unit (P2)

Ma 2

Sz y z Fe

y z

Gearpump Control unit (P1)

Ma 1

Variable displ. pump (P2)

8 2

z

1.1

S2 3

1

5

y T

7

Adjusting pressure

6

4

S1 K

Q-Min.

R

Working pressure

Hydraulic diagramm LPVD 45-140

4

8

3 5 6 7

Control pressure (Px)

30 bar

2

1 Sz Gearpump

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Testing und adjusting of LPVD 45 - 140 EL DA Note: a) b)

I.

Adjustments of new or exchange pumps and control units have been performed at the factory. Tests or adjustments should only be performed at working temperature (oil temperature approx. 50°C)

Test or adjustment Q-min. - Connect pressure gauge to working circuit (A1/A2). - Start pump to idling condition (variation solenoid currentless), reference value = 5 to 12 bar. - Increase engine speed to max. (1/min) and take reading of pump circulating pressure on pressure gauge, reference value 10 to 18 bar. - Any correction should be performed at adjusting screw Q-min.

II.

Test or adjustment - start of pump variation 1st Method (hydraulic system without hoist gear) - Connect pressure gauge to working circuit (A1/A2). - Remove cable plug from direction valves (hoisting function) - Start pump to idling condition. - Activate a hoisting function with initial current (approx. 200 to 210 mA). - Reference value = 16 to 20 bar. - Any correction should be performed at adjusting screw „Y“. 2nd Method (hydraulic system with hoist gear) Prerequisite: Reeving = 1- or 2-fall without load hook. - Activate hoist gear at slightly increased engine speed (approx. 1000 to 1200 1/min) to min. „hoisting““ (200 to 210 mA) and retain control lever at that position. - Reference value = slow rotation or start of rotation of hoist winch into direction „hoisting“. - Any correction should be performed at adjusting scrrew „Y“. a) no rotation = loosen adjusting screw „Y“. b) excessive rotation = tighten adjusting screw „Y“.

III.

Function - pressure cut-off The pressure cut-off valve serves for pump protection. At the response of the pressure cut-off valve (8), the pump activation is intrupted and thus reset to Q-min The adjusted cut-off pressure is approx. 20 to 30 bar beyond the max. operating pressure. Note: The cut-off pressure has been adjusted at the factory and should not be deregulated!

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

LIEBHERR - variable displacement pump Type LPV 140 EL DA Fitted: only on the LTM 1055/1

EL

V DA P

S

Set up and function The variable displacement pump is an axial piston pump in swash plate version. The pump is driven by the Diesel engine via a de-activatable or a direct connection. The feeding of the pump is realized by a suction connection (S) in the connecting housing and delivers into the hydraulic system via the pressure connection (P). The overflow oil of the pump is transferred directly into the hydraulic reservoir by a separate overflow oil pipe. The variation angle and thus the delivery volume of the pump is regulated by a control valve of the control unit (V). Setting into service: Unscrew filler plugs (T) and fill up the pump housing with the specified hydraulic oil (see table of lubricants).

EL = electrical variation DA = pressure cut-off

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / july-2004

- 114 -

Circuit connections A - working circuit (SAE 1 1/4“) S - suction circuit (SAE 2 1/2“) T1,2 - oil filling or overflow oil, oil drainage (M 26x1.5) Fa - filter output or control pressure (M 14x1.5) MA - controlled high-pressure or pump activation pressure (M 10x1)

Electric activation Voltage: U = 24 V A Current: Imin = 210 mA / Imax = 750 mA

Technical data LPV 140 - 1.0.EL.DA.R.2180.6.0... max. - pressure: pmax = 400 bar Pressure cut-off: pDA = 400-10 bar Amissible overflow oil pressure: pl zul = 2 bar max. admiss. overflow oil temper.: t = 90°C Max. Drehzahl: n = 2200 min-1 wight = ca. 70 kg

B

S

A

Section A-A and B-B

B

Hydraulic diagram

Crane control - LICCON / Load Sensing

OW10 Electro-hydraulic regulation

Liebherr-variable displacement pump LPV 140 installed in LTM 1050/1

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Liebherr-variable displacement pump LPV 140 installed in LTM 1050/1 Section of set-up Section A - A

Section B - B

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Liebherr-variable displacement pump LPV 140 with control valve EL-DA Pump control unit (Example: LTM 1050/1) C Section C-C (turned by 90°)

Y

MA=10Nm

Prop. solenoid valve (210-750mA)

C

MA=6Nm

D Section A - A

Section D - D MA=4Nm

MA=29Nm

B

MA=59Nm MA=22Nm

Z

MA=6Nm

Z

P

V Z MA=69Nm

Z MA=2,5Nm

MA=6Nm

B

Z

D

Indications: a) Parts „Z“ are inserted with „Loctite 648“! b) Parts „Y“ are inserted with „Loctite 245“! c) The variation reaction time can be modified by replacing nozzle „X“ in the pump activation circuit! Nozzel standard sizes = 0,9∅ oder 1,5∅

MA=5,5Nm

A MA=7Nm

Section B - B

MA=10Nm

d) Respect the tightening moments (MA) during fitting work! e) Setting screw „V“ for setting the pump variation start.

MA=7Nm

f) Setting screw „P“ for setting the pressure cut-off (primary protection) Warning: Settings of the controller must be performed exclusively by the pump manufacturer or by LWE specialists! Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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A

MA=10Nm

Liebherr-Werk Ehingen GmbH

Kundendienst: juh1 / july-2004

- 117 -

Leitungsanschlüsse A - Arbeitsleitung (SAE 1 1/4“) S - Saugleitung (SAE 2 1/2“) T1,2 - Öleinfüllung bzw. Lecköl, Ölablass (M 26x1.5) Fa - Filterausgang bzw. Steuerdruck (M 14x1.5) MA - geregelter Hochdruck bzw. Pumpe-Ansteuerdruck (M 10x1)

Elektrische Ansteuerung A Spannung:U = 24 V Strom: Imin = 210 mA / Imax = 750 mA

Technische Daten LPV 140 - 1.0.EL.DA.R.2100.8.00B. .. Max. - Druck: pmax = 400 bar Druckabschn: pDA = 370+/-5 bar Zul. Lecköldruck: pl zul = 2 bar Max. zul. Lecköltemp.: tmax = 90°C Max. Drehzahl: n = 2200 min-1 Gewicht = ca. 70 kg

B

T2

T1

S

Fa

A

Section A-A and B-B

A

B

Hydraulic diagram

Crane control - LICCON / Load Sensing

OW10 Electro-hydraulic regulation

Liebherr-variable displacement pump LPV 140 installed in LTM 1055/1

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Liebherr-variable displacement pump LPV 140 installed in LTM 1055/1 Section of set-up Section A - A

locked with Loctite 648

Section B - B

Lock check valve by 3 dotting marks. Warning do not damage inside

X

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Liebherr-variable displacement pump LPV 140 with control valve EL-DA Pump control unit (Example: LTM 1055/1)

C

C

Section C - C Setting - DA (pressure cut-off)

Prop. solenoid valve (210-750mA)

Setting - pump variation start

Q-Min setting Indications on pump control unit (LTM 1055/1) - see pump control unit, LTM 1050/1

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Variable displacement pump (Rexroth) Type A11 VO 260 E D Fitted: only on the LTM 1060/2 P

EP

DAV

S T

Set up and function The variable displacement pump is an axial piston pump in swash plate version. The pump is driven by the Diesel engine via a de-activatable or a direct connection. The feeding of the pump is realized by a suction connection (S) in the connecting housing and delivers into the hydraulic system via the pressure connection (P). The overflow oil of the pump is transfered directly into the hydraulic reservoir by a separate overflow oil pipe. The variation angle and thus the delivery volume of the pump is regulated by a proportional control valve (EP). For the control oil pressure supply, an additional gear pump is fitted to the connection of the pump which is driven by the driving shaft of the variable displacement pump. Setting into service: Unscrew filler plug (T) and fill up the pump housing with the specified hydraulic oil (see table of lubricants).

EP = electrical variation - proportional DAV = pressure cut-off Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Variable displacement pump (Rexroth) A11VO installed in LTM 1060/2 Drive of pumps on the carrier

1

1

3

4

autom. transmission Double gear pump Type: W15-A2-38-33-R-5K06-NN ID: 5121 354 08

Type: 6WG-260

pump 3 supply: gripper/tele release, control oil pump and main control block

pump 2 supply: slewing gear and swing-away jib mounting

pump 1 Type: A11VO 260 EP2D / 11R-NSD12K02-S supply OW hydraulics

9.3 pump steer. circuit 2 and 1 double gear pump Type: W15-A2-33-33-L5K06-NN ID: 5121 355 08

A pump circuit

G external supply control oil Note: shuttle valve for the inversion of the supply is located in attachment G. At idling, no pressure shall exist at M .

overflow oil runback to reservoir

M measuring point for pump pressure measure

-Y105

pressure cut-off valve (340bar) Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

variation start

- 122 -

proportional control valve variable displacement pump

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Variable displacement pump (Rexroth) A11VO installed in LTM 1060/2 Rexroth variable displacement pump A11 VO 260 EP2D / 11R-NSD12K02-S Axial piston pump series 11 Variable displacement pump Operating mode for open circuit Max volum. displacem. 260 cm3/rot. Electr. variation by proportional magnet Control voltage 24 V Pressure cut-off 340 bar

Mode of operation: The electric variation by proportional magnet permits a stepless and programmable adjustment of the volumetric displacement of the pump. The variation is proportional to the magnetic force or the current intensity. The control force at the control pistons is generated by a proportional magnet (-Y105, E-plan UW).

control current I (mA)

Control characteristic of the proportional magnet:

The proportional magnet is controlled by direct current 24 V (EP2). Variation start at approx. 200 mA, variation end at approx. 600 mA (EP2). (output 4.6, ZE 2, E-plan OW) Type of protection IP 54, variation from Vg min to Vg max

Pump characteristic:

In pressureless condition, the pump is pivoted into its original position (Vg max) by a pilot spring. At an operating pressure of > 30 bar, the pump pivots from Vg max to V g min (control current
volumetric displacement

pressure cut-off integrated setting range

340

The variation requires a pressure of 30 bar, the required control oil is taken from the high pressure or from the external control pressure (30 bar) available at attachment G. If the working pressure is 30 bar and V g min > 0, an external control pressure is not required. In that case, the shuttle valve must be removed from the pump prior to the start of operation (see note in the repair instructions RDE 92500-R), and attachment G locked.

50 volum. displacement

Electric variation with proportional magnet and fixed pressure cut-off (EP2D):

The pressure cut-off corresponds to a pressure control, which resets upon attaining the adjusted pressure setpoint value, the volumetric displacement of the pump V g min. This function is superimposed to the EP variation, i.e., below the pressure setpoint value, the control current dependent function is executed. The valve is integrated into the controller housing with a fixed setting at the factory. Setting range of 50 to 340 bar Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 123 -

P1

P2

P3

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Variable displacement pump (Rexroth) A11VO installed in LTM 1060/2 Sectional view of pump with electric control A11VO 260 EP2D MA M

(series 11)

A

G

S

variation start

DAV

M1

pressure cut-off valve (340bar)

-Y105 proportional control valve

high pressure

DAV pressure cut-off valve (340bar)

low pressure

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

suction pressure

overflow oil pressure

- 124 -

control pressure

variation pressure

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation Outline on the main control blocks with electro-hydraulic Load-Sensing control (LS)

Table of contents LTM 1055-1 LS control block - Bucher Hydraulics RC004662: ........... 126

LTM 1060-2 LS control block - Rexroth R900955413: ......................... 128

LTM 1080-1 LS control block - Bucher Hydraulics RC 002449: .......... 130

LTM 1090-2 LS control block - Bucher Hydraulics RD77 3547: .......... 132

LTM 1090-3 LS control block - Bucher Hydraulics RC 005958: .......... 134

LTM 1100-2 LS control block - Bucher Hydraulics RC 004598: .......... 136

LTM 1120-1 LS control block - Bucher Hydraulics RD773547: ........... 138

LTM 1150-1 LS control block - Bucher Hydraulics RD773547: ........... 140

Indiication: Between P and LS or X and XL, a pressure difference of 20BAR must exist. Important: The pressure indications apply to the specific crane. Consequently, the pressure values must be adjusted with reference to the hydraulic circuit diagram. The pressure values stated in this document are only standard values.

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1055-1: LS control block / Bucher Hydraulics RC004662: Front view: hoist limitation telscoping out

hoist limitation luffing down hoist limitation hoist gear 1 lowering View

X DUE1

D5 110bar HW down D3 305bar Tele in

DBV1 Main-block limitation 370bar D4 WW ab

D6 155bar Tele out

DUE2 (inside) D1 235BAR WW up

DUE3

DUE1 LB

D2 315bar HW up

LA RV3 Y7 Tele in

RV2

Y1 HW up

DUE2

Y4 WW up

View Z MP

RV1

View Z Y6 Tele out

Y2 HW down

Y24 WW down

T

View Y

X1 XL F1 P Y

X DUE RV DBV MP

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1055-1: LS control block / Bucher Hydraulics RC004662: RV6

RV4

RV5 DUE6

DUE5

View X (oben)

DUE4

hoist limitation telescoping out

hoist limitation luffing down

hoist limitation hoist gear 1 lowering

pressure balance Telescoping

pressure balance hoisting

View Y

DUE1

pressure balance luffing

DBV1 Main-block limitation 370bar

(bottom) hoist limitation hoist gear 1 lifting

hoist limitation telescoping in

hoist limitation luffing up

A

DUE9

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

DUE8

DUE7

- 127 -

A

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1060-2: LS control block / Rexroth R900955413: View X

Front view:

MS-“LS“ Load-Sensingpressure

HW A3

WW A2

Tele A1 MS-“P“

DBV HW-up (305bar)

pump pressure

DBV WW-up (300bar)

T1

-Ya pilot-controlled DBV (min.7bar) telescoping out, ram released 80bar ram interlocked 135bar

View Z

Ta

T

overflow oil attachment

-Y1 prop.valve hoist gear 1 up

View X

PSTa

-Y4

-Y6

feeding pres- prop.valve sure supply luffing up (45bar)

DBV HW II lifting 305bar

prop.valve Telescope out

View Y

Rückschlagventile (Lastmeldung)

HW II

LS pressure limitation (320bar)

pressure balance

A3

hoist limitation HW lifting

B3

DBV HW I down 120bar

A2 hoist limitation WW up

hoist limitation telescope out

B1

A1

T1

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

hoist limitation HW lowering

hoist limitation telescope in DBV block protection 360bar

LUDV pressure control valve (∆p=16bar) DUE RV DBV MP

flow control valve approx. 0,7 ± 0,1 L (LS pressure)

View Z

measuring measuring connection connection P pressure LUDV pressure

- 128 -

flow control valve approx. 0,7 ± 0.1 L LUDV pressure

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1060-2: LS control block / Rexroth R900955413: View Z

DBV Blockabsicherung 360BAR (an P bzw. LS)

StromRegelventil ca. 0,7 ± 0.1 L

T1

Yb pilot-controlled DBV (min.7bar) telescope outram released 80bar ram interlocked 135bar

Tb overflow oil attachm.

PSTb

T

feeding pressure supply (45bar)

-Y7 prop.valve telescope in

P

-Y24 prop.valve luffing down

-Y2 prop.valve hoistgear 1down

View Y Vorderseite -P

View Y

-Y7

-Y6

prop.valve Telescope in

prop.valve telescope out

-Y4

-Y24

prop.valve luffing up

prop.valve luffing down

-Y1

-Y2

prop.valve hoistgear 1 up

measuring connection prop. valve 4 to 21bar Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

prop.valve hoist gear 1 down

view-rear - 129 -

measuring connection prop. valve 4 to 21bar

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1080-1: LS control block / Bucher Hydraulics RC 002449:

View X DBV telescope out 145 bar pressure stage P3

-Y12 tele ram extension

travel limiting screw tele ram extension

DBV HW lowering 140 bar travel limiting screw HW 1 lowering

View Z travel limiting screw luffing down

DUE RV DBV MP

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

View Y

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1080-1: LS control block / Bucher Hydraulics RC 002449:

View X DB 90BAR Druckstufe P1

DA 170BAR Druckstufe P2

-Y12 Zylinder aus Druckstufe P1, stromlos DB 80BAR

Druckwaage Tele

DBV Tele ein, 310 BAR Druckstufe P4

DBV HW heben, 305BAR Hubbegrenzung Einteleskopieren P4 310 BAR Y 6b Tele aus

Y 6a Tele ein

Hubbegrenzung Hubwerk heben

Y 1b HW senk Y 1a HW heb

Hubbegrenzung Aufwippen

Y 4b WW ab Y 4a WW auf

DBV WW heben, 300 BAR

View Z -Y11 Steuerblockabsicherung 375BAR

View Y

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Druckwaage Hubwerk

Druckwaage Wippwerk

- 131 -

Zylinder ein Druckstufe P2, stromlos DA 150BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1090-2: LS control block / Bucher Hydraulics RD77 3547: Front view:

-Y12

View X

Zylinder aus Druckstufe P1, stromlos DB 80BAR

Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

Y 4a WW auf

Y 1a HW heb

Y 6a Tele ein

View Z

Ansicht Y

Steuerblockabsicherung 370 BAR

DUE RV DBV MP

-Y11 View Y

Zylinder ein Druckstufe P2, stromlos DA 160BAR

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 132 -

DB 80BAR Druckstufe P1

DA 160BAR Druckstufe P2

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1090-2: LS control block / Bucher Hydraulics RD77 3547:

Hubbegrenzung Abwippen

Hubbegrenzung HW 1 senken

Hubbegrenzung Austeleskopieren

-Y12 Zylinder aus Druckstufe P1, stromlos DB 80BAR

View X

DBV HW senken 100 BAR

DBV HW heben, 320 BAR

DBV WW heben, 320 BAR

DBV Tele aus 125 BAR Druckstufe P3 DBV Tele ein, 270 BAR Druckstufe P4

Steuerblockabsicherung 370 BAR Y 4a WW auf

Hubbegrenzung Aufwippen

Hubbegrenzung Hubwerk heben

View Y Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Y 1a HW heb

- 133 -

Y 6a Tele ein

Hubbegrenzung Einteleskopieren P4 270 BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1090-3: LS control block / Bucher Hydraulics RC 005958: View X

Front view:

-Y12 Zylinder aus P1, stromlos DB 80 BAR

View Z Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

-Y11 Y 4a WW auf

Steuerblockabsicherung 385 BAR

Y 1a HW heb

Druckbegrenzung WW auf DA 320 BAR

Y 6a Tele ein

Zylinder ein P2, stromlos DA150 BAR

Druckwaage Imbusschraube

View Y

-Y17b HW2 senken

-Y17a HW2 heben DUE RV DBV MP

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

mit HWII

- 134 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1090-3: LS control block / Bucher Hydraulics RC 005958: Hubbegrenzung Abwippen

Hubbegrenzung HW 1 senken

Hubbegrenzung Austeleskopieren

DBV HW senken DB130 BAR

DBV Tele aus DB 140 BAR Druckstufe P3

Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

DBV DBV HW heben, Tele ein, DA 340 BAR DA 270 BAR Druckstufe P4 Steuerblockabsicherung 385 BAR

XL1 Anschluß für Wippspitze, ohne Wippspitze in Tank

DB 80BAR, P1

DA 150BAR, P2

DBV WW heben, DA 320 BAR Y 4a WW auf

Hubbegrenzung Aufwippen

Y 1a HW heb

Hubbegrenzung Hubwerk heben

Y 6a Tele ein

Hubbegrenzung Einteleskopieren P4 270 BAR

-Y11 Zylinder ein P2, stromlos DA150 BAR

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

- 135 -

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1100-2: LS control block / Bucher Hydraulics RC 004598: View X

Front view:

-Y12 Zylinder aus P1, stromlos DB 80 BAR

Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

Y 4a WW auf

Y 1a HW heb

Y 6a Tele ein

View Z

Steuerblockabsicherung 370 BAR

Druckbegrenzung WW auf DA 310 BAR

Druckwaage Imbusschraube

View Y

DUE RV DBV MP

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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-Y11 Zylinder ein P2, stromlos DA150 BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1100-2: LS control block / Bucher Hydraulics RC 004598: Hubbegrenzung HW 1 senken

Hubbegrenzung Abwippen

Hubbegrenzung Austeleskopieren

DBV HW senken DB130 BAR

Y 4b WW ab

DBV Tele aus DB 140 BAR Druckstufe P3

DBV HW heben, DA 340 BAR Steuerblockabsicherung 370 BAR

Y 1b HW senk

Y 6b Tele aus

DBV Tele ein, DA 270 BAR Druckstufe P4

DA 150BAR, P2 DB 80BAR, P1

DBV Aufwippen, 310 BAR Y 4a WW auf

Hubbegrenzung Aufwippen Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Y 1a HW heb

Hubbegrenzung Hubwerk heben

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Y 6a Tele ein

Hubbegrenzung Einteleskopieren P3 140 BAR

-Y11 Zylinder ein P2, stromlos DA150 BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1120-1: LS control block / Bucher RD773547: -Y12

Front view:

Zylinder aus P1, stromlos DB 80 BAR

Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

Y 4a WW auf

Y 1a HW heb

Y 6a Tele ein

-Y11

Steuerblockabsicherung 375 BAR

DUE RV DBV MP

Zylinder ein P2, stromlos DA180 BAR

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1120-1: LS control block / Bucher RD773547: Hubbegrenzung Abwippen

Hubbegrenzung HW 1 senken

Hubbegrenzung Austeleskopieren

DBV HW senken DB 100 BAR

DBV Tele aus DB 125 BAR Druckstufe P3

DBV HW heben, DA 320 BAR

Y 6b Tele aus

Y 1b HW senk

Y 4b WW ab

DBV Tele ein, DA 230 BAR Druckstufe P4 DA 180BAR, P2

Steuerblockabsicherung 375 BAR

DB 80BAR, P1

DBV Aufwippen, 315 BAR Y 4a WW auf

Hubbegrenzung Aufwippen

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Y 1a HW heb

Hubbegrenzung Hubwerk heben

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Y 6a Tele ein

Hubbegrenzung Einteleskopieren P3 140 BAR

-Y11 Zylinder ein P2, stromlos DA180 BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1150-1: LS control block / Bucher Hydraulics RD773547: Front view:

-Y12 Zylinder aus P1, stromlos DB 80 BAR

Y 4b WW ab

Y 1b HW senk

Y 6b Tele aus

Y 4a WW auf

Y 1a HW heb

Y 6a Tele ein

Steuerblockabsicherung 385 BAR

DUE RV DBV MP

-Y11 Zylinder ein P2, stromlos DA180 BAR

= nozzle = non return valve = pressure relief valve = pressure measuring valve

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation LTM 1150-1: LS control block / Bucher Hydraulics RD773547: Hubbegrenzung HW 1 senken

Hubbegrenzung Abwippen

Hubbegrenzung Austeleskopieren

DBV HW senken DB120 BAR

Y 4b WW ab

DBV Tele aus DB 125 BAR Druckstufe P3

Steuerblockabsicherung 385 BAR

Y 1b HW senk

Y 6b Tele aus

DBV Tele ein, DA 230 BAR Druckstufe P4

DBV HW heben, DA 320 BAR

DA 180BAR, P2 DB 80BAR, P1

DBV Aufwippen, 315 BAR Y 4a WW auf

Hubbegrenzung Aufwippen

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

Y 1a HW heb

Hubbegrenzung Hubwerk heben

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Y 6a Tele ein

Hubbegrenzung Einteleskopieren P3 140 BAR

-Y11 Zylinder ein P2, stromlos DA180 BAR

Crane control - LICCON / Load Sensing OW10 Electro-hydraulic regulation

Liebherr-Werk Ehingen GmbH Kundendienst: juh1 / july-2004

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