Siemens SINAMICS DCM Manual page 615

Descriptions of functions
10.33 Diagnostics
10.33.6.2 Buffer for faults and alarms
Note
A fault buffer and alarm buffer are provided for each drive. The drive and device-specific
messages are entered in these buffers.
The contents of the fault buffer are saved to the non-volatile memory when the Control Unit
is powered down, i.e. the fault buffer history is still available when the unit is powered up
again.
Note
The entry in the fault/alarm buffer is made after a delay. For this reason, the fault/alarm
buffer should not be read until a change in the buffer is also recognized (r0944, r2121) after
"Fault active"/"Alarm active" is output.
Fault buffer
Faults which occur are entered in the fault buffer as follows:
Figure 10-102 Structure of the fault buffer
616
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
ac.maher.co.ir
SINAMICS DCM DC Converter