Alarms, faults and system messages
8.4 Alarms, alarm buffer, and alarm history
SINAMICS G115D distributed drive
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Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
8.4
Alarms, alarm buffer, and alarm history
Overview
An alarm generally indicates that the converter may no longer be able to maintain the
operation of the motor in future.
The extended diagnostics have an alarm buffer and an alarm history, in which the converter
stores the most recent alarms.
Function description
Alarms have the following properties:
•
Incoming alarms have no direct influence on the converter.
•
Alarms disappear when the cause is eliminated.
•
Alarms do not have to be acknowledged.
•
Alarms are displayed as follows:
–
Display via bit 7 in status word 1 (r0052)
–
Display in Startdrive
–
Display in the SINAMICS G120 Smart Access
The alarm code or alarm value describes the cause of the alarm.
Alarm buffer
The converter saves incoming alarms in the alarm buffer. An alarm includes an alarm code,
an alarm value, and two alarm times:
•
Alarm code: r2122
•
Alarm value: r2124 in fixed-point format "I32", r2134 in floating-point format "Float"
•
Alarm time received = r2145 + r2123
•
Alarm time removed = r2146 + r2125
The converter takes its internal time calculation to save the alarm times.
System runtime (Page 324)
Up to 8 alarms can be saved in the alarm buffer.