© 2005 PAT GmbH · D-76275 Ettlingen · Hertzstr. 32 - 34 · ++49 (0) 7243 709-0 · FAX ++49 (0) 7243 709-222 · Email: pat.ettlingen@pat-group.net 19
24 160 19_0106E_Rev D.doc / 2005-06-27 / rk.
9. LENGTH READING PROBLEM
Check out clutch in big gear wheel of length transducer. Extend and retract boom
to ensure that clutch is not slipping on potentiometer axle.
Refer to system wiring diagram and sensor adjustment procedure.
Replace length potentiometer assembly, Refer to Drawing 6 in Section 4.
Remove slip ring body from shaft and remove gear wheel from potentiometer
axle. Unscrew mounting plate and remove potentiometer assembly from
mounting plate. Remove assembly wires form terminal block. Connect new
assembly to terminal block. Reinstall mounting plate, gear wheel and slip
rings. With boom fully retracted, reset potentiometer by turning it slowly
counter-clockwise until it reaches a soft stop. Refer to system wiring diagram
and sensor adjustment procedure.
Check mechanical adjustment of length potentiometer in cable reel. With boom fully retracted, reset
potentiometer by turning it slowly counter-clockwise until it reaches a soft stop.
Refer to system wiring diagram and sensor adjustment procedure.
START
PROBLEM: Length displayed incorrect. Crane is not in “out of load chart” condition.
Replace the gear wheel, clean potentiometer axle. Reset
length potentiometer.
Refer to system wiring diagram and sensor adjustment
procedure.
Check power supply to length transducer on main board,
terminal X1:31 (+UB) and X1:39 (GND)
Refer to system wiring diagram.
Main board defective. Replace main board.
Refer to system wiring diagram and main borad
replacement procedure.
NEXT PAGE
Correct?
Correct?
Correct?
NO
NO
YES
NO
YES
YES
To Next Page
Loading...
