Siemens SINAMICS G150 Operating Manual page 182

Diagnosis / Faults and Alarms
Remedy: - Check motor data.
- Check motor switching mode (star/delta)
- Check motor load.
- Check power line connections.
- Check power lines for short-circuit or ground fault.
- Check length of power lines.
- Replace power section
Acknowl.: Immediate
F30021
Power section: Ground fault
Reaction: OFF2
Cause: Power section has detected a ground fault.
- Ground fault in power lines.
- Winding fault or ground fault. Ground fault at motor
- Current converter defective.
Remedy: - Check power line connections.
- Check motor.
- Check current converter.
Acknowl.: Immediate
F30022
Power section: Monitoring U_ce
Reaction: OFF2
Cause: Monitoring of the collector-emitter voltage (Uce) triggered in power section of the
semiconductor.
- Short-circuit on the motor module output.
- Defective semiconductor in power section
See also: r0949
Fault value Bit0: Phase R
(r0949): Bit1: Phase S
Bit2: Phase T
Bit3: Phototransmitter enable defective
Bit4: Uce checksum error signal interrupted
Remedy: - Check power line connections.
- Select defective semiconductor and replace.
Acknowl.: POWER ON
F30025
Power section: Overtemp. Chip
Reaction: OFF2
Cause: Chip Temperature of semiconductor has exceed permissible limit.
- Permissible duty cycle not observed.
- Insufficient ventilation, fan failure.
- Overload.
- Ambient temperature too high.
- Pulse frequency too high
Remedy: - Adapt duty cycle.
- Check that fan is running.
- Check fan mats
- Check that ambient temperature lies within permissible range
- Check motor load
- Reduce pulse frequency if higher than rated pulse frequency
Acknowl.: Immediate
F30027
Power section: Precharging DC link Monitoring
Reaction: OFF2
10-40
11/03
SINAMICS G150
Operating Manual