Siemens SINAMICS G120 Operating Instructions Manual page 410

Alarms, faults and system messages
8.6 List of alarms and faults
Number Cause
F30002 DC-link voltage overvoltage
F30003 DC-link voltage undervoltage
F30004 Inverter overtemperature
F30005 I2t inverter overload
F30011 Line phase failure
F30015 Motor cable phase failure
F30021 Ground fault
F30022 Power Module: Monitoring U
F30027 Time monitoring for DC link pre-
charging
F30024 Overtemperature, thermal model
F30035 Overtemperature, intake air
F30036 Overtemperature, inside area
F30037 Rectifier overtemperature
A30049 Internal fan defective
F30052 Incorrect Power Module data
408
Remedy
Increase the ramp-down time (p1121).
Set the rounding times (p1130, p1136).
Activate the DC-link voltage controller (p1240, p1280).
Check the line voltage (p0210).
Check the line phases.
Check the line voltage (p0210).
Check whether the inverter fan is running.
Check whether the ambient temperature is in the permissible range.
Check whether the motor is overloaded.
Reduce the pulse frequency.
Inverter protection using temperature monitoring (Page 327)
Check the rated currents of the motor and Power Module.
Reduce the current limit p0640.
When operating with V/f characteristic: Reduce p1341.
Inverter protection using temperature monitoring (Page 327)
Check the input fuses of the inverter.
Check the motor feeder cables.
Check the motor cables.
Increase the ramp-up or ramp-down time (p1120).
● Check the power cable connections.
● Check the motor.
● Check the current transformer.
● Check the cables and contacts of the brake connection (a wire might
be broken).
Check or replace Power Module.
CE
Check the line voltage at the input terminals.
Check the line voltage setting (p0210).
● Adapt the duty cycle.
● Check whether the fan is running.
● Check whether the ambient temperature is in the permissible range.
● Check the motor load.
● Reduce the pulse frequency.
● Reduce the current of the DC current braking.
Inverter protection using temperature monitoring (Page 327)
● Check whether the fan is running.
● Check the fan filter elements.
● Check whether the ambient temperature is in the permissible range.
See F30035 and, in addition:
● Check the motor load.
● Check the line phases
Check the internal fan and if required replace.
Replace Power Module or upgrade CU firmware.
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Converter with the CU250S-2 Control Units