Liebherr LTM 1500-8.1 User Manual

Page 20

• Control of the winches, slewing gear as well as of the luffing

and telescoping motions by the LICCON system (SPS control)

• Four working motions can be performed independent of one

another

• Hoisting/lowering, slewing and luffing speeds are preselectable

by 5 steps

• Luffing speed controlled automatically dependent on the

boom length

• Very short response rate when initiating the crane motions

Electric/electronic crane control with integrated safe load indicator

• Hoist gear and slewing gear are operating within a ”closed

oil circuit”. This enables a particularly precise hoisting, lowering
or slewing of the load. More-over, the potential energy
generated during the lowering of a load is not converted into
heat but can be re-employed for a 2nd motion. This offers
the particular advantage in saving fuel and in a reduced
thermal exposure of the oil than in an open circuit.
No overheating of the oil.

PN 231.01.E12.2009

control

levers

4 variable
displacement
pumps

Liebherr Diesel engine D936L A6

transmitters,

slewing gear

2 Liebherr double
variable displacement
pumps

sensors

tele-
scoping

engine
control

luffing winch (jib)

LICCON

monitor

LICCON

control

luffing
ram

single-stage
telescoping
ram with
hydraulic
interlocking
device

control block

hoist winch I

hoist winch II

LICCON

monitor

Subject to modifications

Liebherr-Werk Ehingen GmbH
Postfach 1361, 89582 Ehingen, Germany

ట +49 7391 5 02-0, Fax +49 7391 5 02-33 99