Siemens SINAMICS DCM Operating Instructions Manual page 492

Descriptions of functions
10.30 Diagnostics
NOTICE
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 10-69 Structure of the fault buffer
Properties of the fault buffer:
● A new fault incident encompasses one or more faults and is entered in "Current fault
● The entries appear in the buffer according to the time at which they occurred.
● If a new fault incident occurs, the fault buffer is reorganized. The history is recorded in
490
incident".
"Acknowledged fault incident" 1 to 7.
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter