Siemens SINAMICS G120C Operating Instructions Manual page 348

Alarms, faults and system messages
9.3 Faults
3. The inverter writes the time of acknowledgement of the faults that have been removed
into parameters r2136 and r2109 (fault time removed).
Figure 9-8
After acknowledgement, the faults that have not been removed are located in the fault buffer
as well as in the fault history.
If less than eight faults were shifted or copied into the fault history, the memory locations with
the higher indices remain empty.
The inverters shifts the values previously saved in the fault history each by eight indices.
Faults, which were saved in indices 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
Table 9- 9
Parameter
r0945
r0949
p0952
r2131
r2133
344
Fault history after acknowledging the faults
Important parameters for faults
Description
Fault code
Displays the numbers of faults that have occurred
Fault value
Displays additional information about the fault
Fault cases, counter
Number of fault cases that have occurred since the last acknowledgement
The fault buffer is deleted with p0952 = 0.
Actual fault code
Displays the code of the oldest fault that is still active
Fault value for float values
Displays additional information about the fault that occurred for float values
Operating Instructions, 07/2015, FW V4.7 SP3, A5E34263257B AC
SINAMICS G120C converter