F30001 fault in siemens sinamics V90 drive

F30001 fault in siemens sinamics V90 drive indicates Power unit Overcurrent. This means the inverter detected a severe current spike in its output stages, usually due to a short-circuit in the motor cables or a ground fault. 

Cause:
The power unit has detected an overcurrent condition.
  • Closed-loop control is incorrectly parameterized.
  • Controller parameters are not proper.
  • Motor has a short-circuit or fault to ground (frame).
  • Power cables are not correctly connected.
  • Power cables exceed the maximum permissible length.
  • Power unit defective.
  • Line phase interrupted.

Remedy:
  • Check the motor data - if required, carry out commissioning.
  • Modify speed loop Kp (p29120), position loop Kv (p29110).
  • Check the motor circuit configuration (star-delta).
  • Check the power cable connections.
  • Check the power cables for short-circuit or ground fault.
  • Check the length of the power cables.
  • Replace power unit.
  • Check the line supply phases.
  • Check the external braking resistor connection.

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