Siemens SIMATIC ET 200pro Original Instructions Manual page 210

Alarms, faults and system messages
11.5 Faults
Acknowledgement
You have multiple options to acknowledge a fault, e.g.:
● PROFIdrive control word 1, bit 7 (r2090.7)
● Acknowledge via the operator panel
● Switch-off the inverter power supply and switch-on again.
Faults detected during the inverter-internal monitoring of hardware and firmware can be
acknowledged only by switching the supply voltage off and on again. The list of faults in the
List Manual contains a note on this limited acknowledgment possibility.
Emptying the fault buffer: Fault history
The fault history can contain up to 56 faults.
The acknowledgment has no effect as long as none of the causes for the faults in the buffer
have been removed. If at least one of the faults in the fault buffer has been removed (the
cause of the fault has been removed) and you acknowledge the faults, then the following
happens:
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 acknowledgment of the faults that have been removed into
parameters r2136 and r2109 (fault time removed).
Figure 11-9
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.
210
Fault history after acknowledging the faults
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB