Over current

Abnormal increase in current.

1. Check if motor power corresponds with the AC motor
drive output power.
2. Check the wiring connections to U/T1, V/T2, W/T3 for
possible short circuits.
3. Check the wiring connections between the AC motor
drive and motor for possible short circuits, also to
ground.
4. Check for loose contacts between AC motor drive and
motor.
5. Increase the Acceleration Time.
6. Check for possible excessive loading conditions at the
motor.
7. If there are still any abnormal conditions when operating
the AC motor drive after a short-circuit is removed and
the other points above are checked,

Check drive rectifier & IGBT using multimeter.
Check wiring.
Check drive hardware using multimeter.