Prowinch PWA - Troubleshooting; Operation & Movement Issues

Version 1.0 Version 1.0
Troubleshooting
36
36
7.1. During Operation:
Symptoms Main Cause Correcon
Hoist does not operate
Brake is
inaudible
Contactor is
inaudible
Excessive voltage Power
Operang circuit break-o, electric parts over-
heang
Power supply
Internal wiring
Contactor
Transformer
Up/Down limit switch
Buon switch
Contactor is audible Power circuit break-o, overheang motor, brake
Motor
Brake
Internal wiring
Contactor (juncon fusing)
Brake is audible Drive overheang, broken bearing
Gear
Bearing
Operates without load only
Unable to li (motor roar) Default phase (single phase operaon)
Power
Feed power
Motor
Contactor (juncon fusing)
Slow liing Low voltage Feed power
Unintended reacon
from buon
Inverse reacon from buon
Wrong phase sequence wiring Feed power
Incorrect signal wiring
Internal wiring
Buon switch
No reacon aer pressing
buon
Circuit wire break
Internal wiring
Buon switch
Electric installaon parts
Contactor
Up/Down limit switch
Contactor
Brake
Feed power
Internal wiring
Buon switch
Wire rope
Load pulley, bare pulley
Gear
Bearing
Noise of
brake
Running (grang) Drag Brake
Stop Wear of fricon plate Brake
Abnormal noise of rail curve
(grang)
Obstrucon of orbit/wheel Operaon of trolley