Earth Fault

What does 4 mean?

An earth fault (ground fault) has been detected in the motor or the cabling between the drive and the motor. This indicates current leakage to ground, which is a serious safety hazard and can cause significant damage to the drive or motor if not resolved promptly.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check all motor and drive grounding connections for proper bonding and tightness.

2. 4

   Isolate the motor from the drive and test the drive's output for an earth fault; if fault persists, the drive may be faulty.

3. 5

   If testing indicates a motor fault, consider rewinding or replacing the motor.