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

9.4

Faults, alarm buffer and alarm history

Overview
A fault generally indicates that the converter can no longer maintain the operation of the motor.
The extended diagnostics have a fault buffer and a fault history, in which the converter stores
the most recent faults.
Function description
Fault buffer
Faults have the following properties:
• In general, a fault leads to the motor being switched off.
• A fault must be acknowledged.
• Faults are displayed as follows:
– Display in bit 3 of status word 1 (r0052)
– Display on the operator panel with Fxxxxx
– Display on the converter via the LED RDY
– Display in Startdrive or STARTER
Figure 9-3
The converter saves incoming faults in the fault buffer. A fault includes a fault code, a fault
value, and two fault times:
• Fault code: r0945
The fault code and fault value describe the cause of the fault.
• Fault value: r0949 in fixed-point format "I32", r2133 in floating-point format "Float"
• Fault time received = r2130 + r0948
• Fault time removed = r2136 + r2109
Up to 8 faults can be saved in the fault buffer.
In the fault buffer, the faults are sorted according to "Fault time received". If the fault buffer is
completely filled and an additional fault occurs, then the converter overwrites the values with
Index [7].
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
Fault buffer
Alarms, faults and system messages
9.4 Faults, alarm buffer and alarm history
369