Alarms, Alarm Buffer, And Alarm History - Siemens SINAMICS G120C Operating Instructions Manual

Alarms, faults and system messages
9.3 Alarms, alarm buffer, and alarm history
9.3

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
Alarm buffer
Alarms have the following properties:
• Incoming alarms have no direct influence 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 bit 7 in status word 1 (r0052)
– Display on the operator panel with Axxxxx
– Display in Startdrive or STARTER
Alarm code or alarm value describe the cause of the alarm.
Figure 9-1
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 = r2123
• Alarm time removed = r2125
Up to 8 alarms can be saved in the alarm buffer.
366
Alarm buffer
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
SINAMICS G120C Converters