Prowinch PWA - Switch & Electrical Faults

Version 1.0
41
Troubleshooting
41
Limit switch
Push button switch
Condion Reason Acon Cause Correcon
No operaon (Contactor)
Contact fused
Operate limit switch. Check con-
nuity of contactor, replace if result
is negave
Limit switch overuse Avoid overuse of switch
Wire break
Inspect cable, change if wire break-
age or replace limit switch
Vibraon, drop
Avoid excessive bumping in
usage
Movable parts
rusng
Check movable parts such as limit
lever. Remove if rusty or replace if
adhesive
Set in Up/Down limit for
long me
Do not set in Up/Down limit
Motor did not stop upon
reaching upper and lower limit
Contact welded
Operate limit switch. Check con-
nuity of contactor, replace if does
not open
Limit switch used frequently Avoid overuse of limit switch
Rusng of movable
parts
Check movable parts such as limit
lever. Remove if rusty or replace if
adhesive
Infrequent usage; use in
moist environments.
Regular inspecon
Wiring error
Reference wiring diagram. If limit
switch cable is properly connected,
it is inversely connected. Swap 2
wire power cords
Wiring error
Properly connect wire power
cords as per wiring diagram
Condion Reason Acon Cause Correcon
No operaon
(Contactor)
Emergency buon is
pressed
Turn buon right to recover Emergency buon not reset Read User Manual before usage
Switch gear fault
Conducon contacts, replace switch
if o
Vibraon, drop
Avoid excessive bumping in
usage
Wiring break
Check if buon cable is correctly
connected to switch device. Repair
if broken
Vibraon, drop
Avoid excessive bumping in
usage
Terminal screw loose Tighten screw Vibraon, drop
Avoid excessive bumping in
usage
Buon cable wire
break
Replace cable or buon cable when
wire break
Cable coang damaged
Avoid contact with other
equipment during operaon
Faulty installaon Install protecon line rmly
Acon does not correspond with
display
Wiring error
Reference wiring diagram. If limit
switch cable is properly connected,
it is inversely connected. Swap 2
wire power cords
Wiring error
Properly connect wire power
cords as per wiring diagram
Operaon connues upon buon
release
Faulty switch gear
part
Replace switch if not smooth. Vibraon, drop
Avoid excessive bumping in
usage