Palfinger PK9001-EH, Руководство оператора

Страница: 67 / 184

Chapter 5 Crane control systems
61
HPSC-L stability control
Purpose of HPSC-L
PALFINGER's High Performance Stability Control Light (HPSC-L) is an electronic system that monitors
the stability of vehicles with loading cranes.
Benefits for the operator
Information!
With HPSC-L loading cranes are stable even if the
vehicle's stabilizer cylinders and outrigger beams are only partly or
not extended / used.
This makes it possible to work safely with the loading crane even in
narrow areas.
Function
The HPSC-L is a simplified version of the HPSC system. The crane booms' extension lengths are not
controlled variably here but monitored by a switch. The switch recognizes whether an outrigger beam is
fully extended or not.
Additionally the system knows the crane's slewing position. Using the current support situation of the
vehicle, the system calculates a lifting power limit curve in real time which covers the entire slew range
and comes close to the actual vehicle stability.
This lifting power limit curve is subject to the following criteria:
x Depending on the stabilizers' positions the curve may be different on either side:
x
There are 3 support situations possible on each vehicle side:
x
Stabilizer(s) not on the ground;
x Outrigger beams completely retracted and stabilizer cylinders on the ground;
x
Outrigger beams completely extended and stabilizer cylinders on the ground.
Example
Symbolic lifting power limit curve of front-mounted crane, one side fully supported, other side inside
supported.
1 = 100 % lifting power
2 = Lifting power limit curve