Cause : Snubber over-current detected comes when an over-current condition has been detected in the rectifier snubbing circuit, The exact cause of the trip can be identified by the sub-trip number.

1. Ensure the internal EMC filter is installed.
2. Ensure the motor cable length does not exceed the maximum for selected switching frequency.
3. Check for supply voltage imbalance.
4. Check for supply disturbance such as notching from a DC drive.
5. Check the motor and motor cable insulation with an insulation tester.
6. Fit an output line reactor or sinusoidal filter.