F30002Fault · Drive
SINAMICS S210 F30002: Drive DC Link Overvoltage
What F30002 means
The DC link (DC bus) voltage inside the S210 rose above its trip level, usually because a braking motor fed energy back faster than the converter could get rid of it.
Symptoms
Trips while the axis is slowing down, on fast stops, or while a vertical axis is lowered.
Is it repairable?
Often a setting or braking-resistor issue; repairable when the converter's braking circuit or voltage measurement has failed.
Common causes
- Deceleration too fast for the load
- Braking resistor missing, undersized or open
- Supply voltage too high or spiking
- A supply phase interrupted
Safe checks
- 1Note whether it always trips during braking
- 2Check the braking resistor (internal or external) and its wiring
- 3Measure the incoming line voltage
Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.
Reviewed by AutomIQ repair technicians. Code and name from the SINAMICS S210 servo drive system Operating Instructions (09/2019).
Related SINAMICS S210 faults
- F07011Motor overtemperature
- F07412Commutation angle incorrect (motor model)
- F07575Motor encoder not ready
- F07801Motor overcurrent
- F07900Motor blocked/speed controller at its limit
- F07930Brake control error