Siemens SINAMICS G120 Original Instructions Manual page 364

Alarms, faults and system messages
11.4 Faults
1. The inverter accepts all faults from the fault buffer in the first eight memory locations of
the fault history (indexes 8 ... 15).
2. The inverter deletes the faults that have been removed from the fault buffer.
3. The inverter writes the time of acknowledgement of the faults that have been removed
into parameters r2136 and r2109 (fault time removed).
Figure 11-8
After acknowledgement, 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 acknowledgement, are deleted.
Deleting the fault history
If you wish to delete all faults from the fault history, set parameter p0952 to zero.
Parameters of the fault buffer and the fault history
Parameter
r0945
r0948
r0949
364
Fault history after acknowledging the faults
Description
Fault code
Displays the numbers of faults that have occurred
Fault time received in milliseconds
Displays the time in milliseconds when the fault occurred
Fault value
Displays additional information about the fault
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG