9.4 Faults, alarm buer 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 buer and a fault history, in which the converter stores
the most recent faults.
Function description
Fault buer
Faults have the following properties:
• In general, a fault leads to the motor being switched o.
• A fault must be acknowledged.
• Faults are displayed as follows:
– Display in bit3 of status word1 (r0052)
– Display on the operator panel with Fxxxxx
– Display on the converter via the LED RDY
– Display in Startdrive or STARTER
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Figure9-3 Fault buer
The converter saves incoming faults in the fault buer. 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 xed-point format "I32", r2133 in oating-point format "Float"
• Fault time received = r2130 + r0948
• Fault time removed = r2136 + r2109
Up to 8 faults can be saved in the fault buer.
In the fault buer, the faults are sorted according to "Fault time received". If the fault buer is
completely lled and an additional fault occurs, then the converter overwrites the values with
Index[7].
Alarms, faults and system messages
9.4Faults, alarm buer and alarm history
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 369
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