F30002 fault in siemens sinamics V90 drive

F30002 fault in siemens sinamics V90 drive indicates a DC link overvoltage. This means the internal DC bus voltage spiked too high, typically caused by rapid motor deceleration regenerating too much energy back into the drive. 

Cause:
The power unit has detected overvoltage in the DC link.
  • Motor regenerates too much energy.
  • Device connection voltage too high.
  • Line phase interrupted.

Remedy:
  • Increase the ramp-down time.
  • Activate the DC link voltage controller.
  • Use a braking resistor.
  • Increase the current limit of the infeed or use a larger module.
  • Check the device supply voltage.
  • Check the line supply phases.

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