Siemens SINAMICS G120D Original Instructions Manual page 305

1. The inverter accepts all faults from the fault buffer in the first eight memory locations of
2. The inverter deletes the faults that have been removed from the fault buffer.
3. The inverter writes the time of acknowledgment of the faults that have been removed into
After acknowledgment, the faults that have not been removed are located in the fault buffer
as well as in the fault history. For these faults, the "fault time coming" remains unchanged
and the "fault time removed" remains empty.
If less than eight faults were shifted or copied into the fault history, the memory locations with
the higher indexes remain empty.
The inverter shifts the values previously saved in the fault history by eight indexes. Faults,
which were saved in indexes 56 ... 63 before the acknowledgment, are deleted.
Deleting the fault history
If you wish to delete all faults from the fault history, set parameter p0952 to zero.
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
the fault history (indexes 8 ... 15).
parameters r2136 and r2109 (fault time removed).
Figure 11-8 Fault history after acknowledging the faults
Alarms, faults and system messages
11.2 Faults
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