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System messages
12.3 Faults and alarms
A30076
Power unit: Thermal overload braking resistor alarm
Message class:
Braking Module faulted (14)
Message value:
%1
Component:
Power Unit
Response:
NONE
Acknowledgment: NONE
Cause:
The energy absorbed by the braking resistor has exceeded the alarm threshold of 80 %. If the power unit is still operated
in the generator mode, then this can reach the shutdown threshold. To avoid overheating of the braking resistor, use of the
braking resistor is inhibited and alarm A30077 is output.
Alarm value (r2124, interpret decimal):
Energy absorbed by the braking resistor [Ws].
Remedy:
Reduce the power when generating.
Note:
For a DC link coupling, the generating power of all of the coupled power units must be taken into consideration.
A30077
Power unit: Thermal overload braking resistor
Message class:
Braking Module faulted (14)
Message value:
%1
Component:
Power Unit
Response:
NONE
Acknowledgment: NONE
Cause:
The braking resistor is thermally overloaded. This is the reason that its use was inhibited.
Alarm value (r2124, interpret decimal):
Energy absorbed by the braking resistor [Ws].
Remedy:
Reduce the power when generating.
Note:
- Once the braking resistor has thermally recovered, it is enabled for further use.
- For a DC link coupling, the generating power of all the coupled power units must be taken into consideration.
F30078
Power unit: Line reactor overheated
Message class:
Overtemperature of the electronic components (6)
Message value:
-
Component:
Power Unit
Response:
OFF2
Acknowledgment: IMMEDIATELY
Cause:
The temperature monitoring of the line reactor has responded. In addition to the OFF2 response, the use of the braking
resistor was inhibited.
Note:
- An overtemperature condition of the line reactor can occur when a DC link coupling is used – and if the power when
motoring, which is fed into the DC link - Is not evenly distributed across the rectifiers of the power units.
Remedy:
- Check the converter fan and replace if necessary.
- Reduce the motoring power.
F30081
Power unit: Switching operations too frequent
Message class:
Power electronics faulted (5)
Message value:
Fault cause: %1 bin
Component:
Power Unit
Response:
OFF2
Acknowledgment: IMMEDIATELY
558
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB
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