Siemens SINAMICS G150 Manual page 1550

4 Faults and alarms
4.2 List of faults and alarms
Reaction upon N: NONE
Acknowl. upon N: NONE
F30055 Power unit: Braking chopper overcurrent
Message value: -
Message class: Braking Module faulted (14)
Drive object: B_INF, VECTOR_G
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: An overcurrent condition has occurred in the braking chopper.
Remedy: - check whether the braking resistor has a short circuit.
- for an external braking resistor, check whether the resistor may have been dimensioned too small.
Note:
The braking chopper is only enabled again at pulse enable after the fault has been acknowledged.
A30057 Power unit: Line asymmetry
Message value: %1
Message class: Network fault (2)
Drive object: B_INF, VECTOR_G
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 value: -
Message class: Auxiliary unit faulted (20)
Drive object: B_INF, VECTOR_G
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.
F30060 (A) Pre-charge contactor state monitoring
Message value: Fault cause: %1 bin
Message class: Infeed faulted (13)
Drive object: B_INF, VECTOR_G
Reaction: OFF2 (NONE, OFF1)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: A feedback signal for the pre-charging contactor (ALM, SLM, BLM diode) or the line contactor (BLM thyristor)
interconnected and the monitoring activated.
After switching-in/switching-out the contactor, a correct feedback signal was not received within the monitoring time
set in p0255[0].
Fault value (r0949, interpret binary):
Bit 0: The time set in p0255[0] was exceeded when switching-in/switching-out the contactor.
Bit 1: The pre-charging contactor was opened while pre-charging or in the infeed mode (BLM thyristor).
Bit 2: The pre-charging contactor was switched-in in the OFF state or during infeed operation.
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SINAMICS G130/G150
List Manual (LH2), 04/2014, A5E03263479A