Siemens SINAMICS G120C USS/MB Operating Instructions Manual page 366

Alarms, faults and system messages
8.5 List of alarms and faults
Number Cause
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
F30035 Overtemperature, intake air
F30036 Overtemperature, inside area
F30037 Rectifier overtemperature
A30049 Internal fan defective
F30052 Incorrect Power Module data
F30053 Error in FPGA data
F30059 Internal fan defective
F30074 Communications error between
Control Unit and Power Module
A30502 DC link overvoltage
F30662 CU hardware fault
F30664 CU power up aborted
F30850 Software fault in the Power Mod‐
ule
A30920 Temperature sensor fault
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Remedy
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.
Check the rated currents of the motor and inverter.
Reduce the current limit p0640.
When operating with V/f characteristic: Reduce p1341.
Check the inverter's input fuses.
Check the motor 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 the inverter.
CE
Check the line voltage.
Check the line voltage setting (p0210).
● 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 the inverter or upgrade the inverter firmware.
Replace the inverter.
Check the internal fan and if required replace.
There is a communications fault between the Control Unit and the Power
Module. Possible cause:
● The external 24 V Control Unit power supply has dipped to ≤95% of the
rated voltage for ≤3 ms
● Check the device supply voltage (p0210).
● Check the line reactor dimensioning
Switch off the inverter and switch on again, upgrade the firmware or contact
technical support.
Switch off the inverter and switch on again, upgrade the firmware or contact
technical support.
Replace the inverter or contact technical support.
Check that the sensor is connected correctly.
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
SINAMICS G120C converter