Komatsu PC58UU-3, Руководство по ремонту

Страница: 162 / 528

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ELECTRICAL SYSTEM
10-118
PC58UU-3
12
INTERFERENCE PREVENTION SYSTEM
• Structure of the machine’s work equipment can introduce interference of the bucket against the canopy
or cab when you turn on the left offset operation or operation of the work equipment.This interference
potentially occurs at the front side and right side of the canopy or the cab.
• The interference prevention system constantly monitors the bucket position in order to automatically
stop movement of the work equipment and sound the alarm buzzer if the bucket approaches any of
these interfering zones.
Drawing dimension: A: 200 - 250 mm
B: 150 - 200 mm
• This function ensures work safety and operating performance in the left offset area.
• The controller constantly calculates X , Y and
Z coordinates of point A referencing output
signal from the potentiometer on rotation
angle of the boom (1), arm (3) or offset (2).
The potentiometer is provided for the boom,
the arm, and the offset.
• If point A approaches the interfering zone
(namely, if it enters reduction zone), the sys-
tem reduces moving speed of the work equip-
ment
• If the controller or one of the potentiometers
fails, the system stops movement of the work
equipment by stopping supply of power to
respective solenoid valves. In this case, work
equipment, swing and travel operation can be
resumed by turning on the emergency work
equipment operation switch.
(5)