Liebherr LTM 1250-6.1 User Manual

Page 5

• The electric and electronic components are interconnected

by the latest data bus transmission technique

• Instead of the traditional electric wiring, the data transmission

to the individual function blocks is performed digitally just

by a few data cables, thus improved reliability due to

essentially less contacts

• Self-manufactured Liebherr bus systems (LSB), specially

adapted to the requirements of a mobile crane

• Diesel engine and automatic transmission are controlled by

a CAN data bus. The all electronic drive management reduces

fuel consumption and improves the exhaust gas emission

• The electric systems of the carrier and crane as well as of

all cockpit functions, the outrigger system and sensor system

of the boom are interconnected by 4 Liebherr system busses

• The control of the function blocks is realized by I/A modules

the programming of which is performed by means of the

Liebherr system busses. The control intelligence is integrated

into the LICCON central unit

• Comprehensive diagnostic facilities, quick error localization,

operating error display

• Test programs for functional test of keyboard and display

unit as well as for the test of the control units for engine and

transmission management, additional Liebherr brake system,

hydraulic ventilator, hydraulic suspension and outrigger

control panels

• The new data bus technique distinctively increases

functionality and efficiency of the mobile crane

Legend:

LSB - Liebherr system bus 1

LSB - Liebherr system bus 2

LSB - Liebherr system bus 3

LSB - Liebherr system bus 4

CAN - Bus

SCI - serial communication interface

1 Input/output module for control of the suspension, Liebherr

Diesel engine, automatic transmission, control functions,

pneumatic control of brake functions

1a Instruments keyboard unit in driver’s cab

2 Input/output module for differential locks, display functions

2a Instruments keyboard unit in driver’s cab

3 Input/output module for outrigger system - right

3a Control unit for outrigger system - right

4 Input/output module for outrigger system - left

4a Control unit for outriggers system - left

5 Input/output module for engine brake, cruise controller, speed

setter, control of Diesel engine (steering column switch right)

and automatic transmission

6 Control of automatic transmission

7 Control of injection pump – Liebherr Diesel engine/carrier

8 Slewing sensor in slipring unit

9 Connection of Liebherr system bus (LSB 1, 2, 3, 4)

10 LICCON central unit

11 LICCON monitor in crane cab

12 Length sensor and cable drum/energy cable for interlocking

gripper/telescopic boom

13 Inductive sensors (12 x)

14 Angle sensor on base section

15 Cable drum for items 16, 17, 18 and for luffing jib

16 Wind sensor

17 Hoist limit switch

18 Angle sensor

19 Input/output module for electronic control of Diesel

engine/superstructure, air flap, ventilator clutch, exhaust

flap

20 Control injection pump – Liebherr Diesel

engine/superstructure

21 Control lever

22 Pressure sensor (4 x) for output management and LMB

(safe load indicator)

LSB 3

LSB 4

LSB 1

CAN-Bus

LSB 2

CAN-Bus

LSB 1

LTM 1250-6.1