SINAMICS G120 Control Units CU240B-2/CU240E-2
List Manual (LH11), 01/2016, A5E33839529
867
4 Faults and alarms
4.2 List of faults and alarms
A30057 Power unit: Line asymmetry
Message class: Network fault (2)
Reaction: NONE
Acknowledge: NONE
Cause: Frequencies have been detected on the DC link voltage that would suggest line asymmetry or failure of a line phase.
It is also possible that a motor phase has failed.
Fault F30011 is output if the alarm is present and at the latest after 5 minutes.
The precise duration depends on the power unit type and the particular frequencies. For booksize and chassis power
units, the duration also depends on how long the alarm has been active.
Alarm value (r2124, interpret decimal):
Only for internal Siemens troubleshooting.
Remedy: - check the line phase connection.
- check the motor feeder cable connections.
If there is no phase failure of the line or motor, then line asymmetry is involved.
- reduce the power in order to avoid fault F30011.
F30059 Power unit: Internal fan faulty
Message class: Auxiliary unit faulted (20)
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The internal power unit fan has failed and is possibly defective.
Remedy: Check the internal fan and replace if necessary.
A30065 (F, N) Voltage measured values not plausible
Message class: Power electronics faulted (5)
Reaction: NONE
Acknowledge: NONE
Cause: The voltage measurement is not supplying any plausible values
Alarm value (r2124, interpret bitwise binary):
Bit 1: Phase U.
Bit 2: Phase V.
Bit 3: Phase W.
Remedy: - De-activate voltage measurement (p0247.0 = 0).
- De-activate flying restart with voltage measurement (p0247.5 = 0) and de-activate fast flying restart (p1780.11 = 0).
F30071 No new actual values received from the Power Module
Message class: Internal (DRIVE-CLiQ) communication error (12)
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: More than one actual value telegram from the power unit module has failed.
Remedy: Check the interface (adjustment and locking) to the power unit module.
F30072 Setpoints can no longer be transferred to the Power Module
Message class: Internal (DRIVE-CLiQ) communication error (12)
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: More than one setpoint telegram was not able to be transferred to the power unit module.
Remedy: Check the interface (adjustment and locking) to the power unit module.
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