Prowinch PWH - Limit Switch

Troubleshoooting
43
Version 1.0 | 43 |
Condition
Reason Action Cause Correction
Non-stop
activation
Junction welding
burn out
Change contactor if
continuous
welding or burn out.
For electric reply, visual
inspection
of junction
Do not over-operate
Excessive voltage
(Excessive current)
Operate under rated voltage
Excessive current due
to overload
Operation under rated voltage
No operation
Coil burning
Measure coil resistance
value.
Change coil if value in-
nite.
Avoid over-operation
Excessive voltage Operate under rated voltage
Vibration due to low
voltage (Starting current
added continuous)
Operate under rated voltage
Replace contactor if
action is not smooth.
For electric reply, visual
inspection for part
breakage
Vibration, drop
Avoid excessive bumping
in usage
Condition
Reason Action Cause Correction
No operation
(Contactor)
Contact fused
Operate limit switch.
Check continuity of
contactor, replace
if result is negative
Limit switch overuse Avoid overuse of switch
Wire break
Inspect cable, change
if wire breakage or
replace limit
switch
Vibration, drop
Avoid excessive bumping
in usage
Movable parts
rusting
Check movable parts
such as limit lever.
Remove if rusty or
replace if adhesive
Set in Up/Down limit
for long time
Do not set in Up/Down limit
Contactor & Electric Reply
Limit Switch