9.3 Alarms, alarm buer, 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 buer and an alarm history, in which the converter
stores the most recent alarms.
Function description
Alarm buer
Alarms have the following properties:
• Incoming alarms have no direct inuence on the converter.
• Alarms disappear again when the cause is eliminated.
• Alarms do not have to be acknowledged.
• Alarms are displayed as follows:
– Display via bit7 in status word1 (r0052)
– Display on the operator panel with Axxxxx
– Display in Startdrive or STARTER
Alarm code or alarm value describe the cause of the alarm.
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Figure9-1 Alarm buer
The converter saves incoming alarms in the alarm buer. An alarm includes an alarm code,
an alarm value, and two alarm times:
• Alarm code: r2122
• Alarm value: r2124 in xed-point format "I32", r2134 in oating-point format "Float"
• Alarm time received = r2123
• Alarm time removed = r2125
Up to 8 alarms can be saved in the alarm buer.
Alarms, faults and system messages
9.3Alarms, alarm buer, and alarm history
SINAMICS G120C Converters
366 Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
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