Cause : Overcurrent - comes when output current has exceeded internal fault limit or incorrect motor data. In addition to an actual overcurrent situation, this fault may also be caused by an earth fault or supply phase loss.

1. Check motor load.
2. Check acceleration times in parameter group 23 Speed reference ramp (speed control), 26 Torque reference chain (torque control) or 28 Frequency reference chain (frequency control).
3. Also check parameters 46.01 Speed scaling, 46.02 Frequency scaling and 46.03 Torque scaling.
4. Check motor and motor cable (including phasing and delta/star connection).
5. Check there are no contactors opening and closing in motor cable.
6. Check that the start-up data in parameter group 99 Motor data corresponds to the motor rating plate.
7. Check that there are no power factor correction capacitors or surge absorbers in motor cable.
8. Check for an earth fault in motor or motor cables by measuring the insulation resistances of motor and motor cable.
9. Check the insulation of the assembly in the hardware manual of the drive.