Question/Problem
Conveyor is not working automatically. Motor runs when forcing output, but no Motor running input received.
Overload Alarm
Environment
BOSS III
Opto 22 I/O System
Motor runs when output forced ON
Answer/Solution
Overload alarm means the corresponding input does not come on when the output is energized for a motor. When the output is forced on, the contactor engages and the motor turns on. A continuing overload alarm condition indicates a problem with the input circuit. There are 4 main possibilities for this: failed fuse on the input board, failed input module, failed contact or wiring failure.
Use the troubleshooting chart below to resolve:
|
Symptom
|
Cause
|
Resolution
|
|
With output forced, voltage present at motor contactor AUX, voltage present at input terminal, module indicator OFF. Adjacent input also not responding to input voltage
|
Failed pico fuse
|
Replace pico fuse
|
|
With output forced, voltage present at motor contactor AUX, voltage present at input terminal, module indicator OFF. Adjacent input responds to input voltage
|
Failed input point
|
Replace Opto quad pack
|
|
With output forced, voltage present at motor contactor AUX, voltage not present at input terminal.
|
Wiring error
|
Re-terminate signal wire
|
|
With output forced, voltage not present at motor contactor AUX,
|
Aux contact failure
|
Replace contactor or Aux contact
|
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Internal Notes
We should check the electric connections and wiring first . It should be tighten and fixed .
check if there is no overload alarm.
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