F30005Fault · Power unit
SINAMICS S210 F30005: Power Unit Overload I2t
What F30005 means
The converter's thermal model calculated that it carried too much current for too long (I²t overload).
Symptoms
Trips during long, heavy cycles; clears after a rest and then comes back.
Is it repairable?
Often mechanical; repairable when the converter's current measurement or the motor is faulty.
Common causes
- Mechanical binding in the axis
- Holding brake dragging
- Converter too small for the duty cycle
- Poorly tuned or oscillating control loop
- Motor fault drawing extra current
Safe checks
- 1Compare the actual current with the converter rating
- 2With power off and the axis secured, feel for binding
- 3Confirm the brake releases fully
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