Siemens SINAMICS G List Manual page 588

Faults and Alarms
List of faults and alarms
Remedy: For infeed units, the following applies:
- check the controller settings, if required, reset and identify the controller (p0340 = 2, p3410 = 5).
- reduce the load, if required, increase the DC link capacitance or use a higher-rating infeed.
- check the connection of the optional voltage sensing module.
- check the connection and technical data of the commutating reactor.
- check the power cables for short-circuit or ground fault.
- replace power module.
The following applies to motor modules:
- check the motor data.
- check the motor circuit configuration (star-delta).
- check the motor load.
- check the power cable connections.
- check the power cables for short-circuit or ground fault.
- check the length of the power cables.
- replace power module.
F30021 Power module: Ground fault
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: Power module has detected a ground fault.
- ground fault in the power cables
- winding fault or ground fault at the motor.
- CT defective.
Fault value (r0949, decimal):
Absolute value, summed current [32767 = 271 % rated current].
Remedy: - check the power cable connections.
- check the motor.
- check the CT.
F30022 Power module: Monitoring U_ce
Reaction: OFF2
Acknowledge: power on
Cause: In the power module, the monitoring of the collector-emitter voltage (V_ce) of the semiconductor has responded.
Possible causes:
- short-circuit at the motor module output.
- defective semiconductor in the power module.
Fault value (r0949, binary):
Bit 0: Short-circuit in phase U
Bit 1: Short-circuit in phase V
Bit 2: Short-circuit in phase W
Bit 3: Light transmitter enable defective
Bit 4: V_ce group fault signal interrupted
See also: r0949
Remedy: - check the power cable connections.
- select the defective semiconductor and replace.
F30025 Power module: Overtemperature chip
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: Chip temperature of the semiconductor has exceeded the permissible limit value.
- the permissible load duty cycle was not maintained.
- insufficient cooling, fan failure.
- overload
- ambient temperature too high.
- pulse frequency too high.
Fault value (r0949):
Temperature difference between the heatsink and chip [1 Bit = 0.01 °C].
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SINAMICS G List Manual, Edition 12.2004