Siemens SINAMICS G List Manual page 509

Save fault buffer on POWER OFF
The contents of the fault buffer are saved to non-volatile storage when the Control
Unit 320 (CU320) is powered down, i.e. the fault buffer history is still available
when the unit is powered up again.
Note:
Requirements:
• Firmware with version V2.2 or later.
• Control Unit 320 (CU320) with hardware version C or higher.
The hardware version is shown on the rating plate or can be displayed online
with the commissioning software (in Project Navigator under "Drive Unit" -->
Configuration --> Version Overview).
If these conditions are not fulfilled, the contents of the fault buffer are deleted on
every POWER ON.
The fault buffer of a drive object comprises the following parameters:
• r0945[0...63], r0947[0...63], r0948[0...63], r0949[0...63]
• r2109[0...63], r2130[0...63], r2133[0...63], r2136[0...63]
The fault buffer contents can be deleted manually as follows:
• Delete fault buffer for all drive objects:
p2147 = 1 --> p2147 = 0 is automatically set after execution.
• Delete fault buffer for a specific drive object:
p0952 = 0 --> The parameter belongs to the specific drive object.
The fault buffer contents are automatically deleted in response to the following
events:
• Restore factory setting (p0009 = 30 and p0976 = 1).
• Download with modified structure (e. g. number of drive objects changed).
• Power-up after other parameter values have been loaded (e. g. p0976 = 10).
• Firmware release upgrade.
 Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Faults and Alarms
Overview of Faults and Alarms
3-509