Alarm Buffer - Siemens SINAMICS G220 Operating Instructions Manual

15.6

Alarm buffer

Overview
The converter stores the most recent alarms in an alarm buffer.
Description of function
An alarm includes an alarm code, an alarm value, and 2 alarm times (for parameters, see the
following diagram).
The alarm code and the alarm value describe the alarm cause. The alarm value provides
additional and more detailed information about the alarm.
Alarm times indicate when the alarm occurred and when the alarm was resolved.
Alarm buffer
The converter saves up to 8 active alarms in the alarm buffer.
In the alarm buffer, the alarms are sorted according to "Alarm time received". If the alarm
buffer is completely filled and an additional alarm occurs, the converter overwrites the values
with index [7]. Resolved alarms are moved to the alarm history.
Once the cause of the alarm has been eliminated, the converter writes the time to "Alarm
time resolved". The "Alarm time resolved" value for unresolved faults remains at 0.
Figure 15-2 Alarm buffer
Alarm history
The alarm history saves up to 56 past alarms.
In the alarm history, alarms are sorted according to the "Alarm time resolved". The last alarm
that was resolved has index[8].
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
System messages
15.6 Alarm buffer
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