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Q : How to distinguish between an OC alarm caused by a mechanical fault and one caused by an electrical fault?
A: Disconnect the motor from the load and start the drive with no load.
1、If the drive runs normally → Mechanical fault. The issue is on the load side, such as a seized bearing, a stuck transmission mechanism, etc.
2、If the alarm still occurs → Electrical / drive fault. Further inspection is needed on the motor, cables, or the drive itself.
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