Cause : DC link voltage overvoltage comes when the power unit has detected overvoltage in the DC link. This means motor regenerates too much energy or device connection voltage too high.

F30002 fault in siemens 6RA80 DC Drive indicate DC link voltage overvoltage. This means the voltage in the DC link (intermediate circuit) has exceeded the drive's allowable limit.

1. Increase the ramp-down time.
2. Activate the DC link voltage controller (p1240).
3. Use a brake resistor or Active Line Module.
4. Increase the current limit of the infeed or use a larger module (for the Active Line Module).
5. Check the device supply voltage.
6. Check and correct the phase assignment at the VSM and at the power unit.
7. Check the line supply phases.