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15.8
Fault buffer
Overview
The converter stores a limited number of faults as incidents in a fault buffer. As a consequence,
acknowledged faults are kept for diagnostic purposes.
Description of function
A fault includes a fault code, a fault value and 2 fault times. The associated parameters are
shown in the following diagram.
The fault code and fault value describe the cause of the fault. The fault value provides
additional and more detailed information about the fault.
The fault times indicate when the fault occurred and when the fault was eliminated.
Fault buffer
The converter stores up to 8 incidents in the fault buffer. The fault buffer comprises the
current incident and the fault history.
The fault buffer is kept when the converter supply voltage is switched off.
Figure 15-5
Structure of the fault buffer
Current incident
The current incident contains up to 8 active faults.
The faults are sorted by "Fault time received". If the current incident is full and an additional
fault occurs, then the converter overwrites the values with Index [7].
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
System messages
15.8 Fault buffer
749
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