9.5 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
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 via the fieldbus
– Display on the operator panel with Fxxxxx
– Display on the converter via the LED RDY
– Display via SINAMICS G120 Smart Access
Fault buffer
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Figure 9-3 Fault buffer
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
The converter takes its internal time calculation to save the fault times.
System runtime (Page 746)
Up to 8 faults can be saved in the fault buffer.
Warnings, faults and system messages
9.5 Faults, alarm buffer and alarm history
SINAMICS G120XA converter
750 Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
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