Commissioning (software)
6.5 Additional information on configuring the SINAMICS Integrated
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
219
Deleting the NVRAM data
The SINAMICS NVRAM data can only be deleted when none of the connected drives has a
pulse enable.
The deletion of the NVRAM data is performed by setting parameter p7775 to 3.
After setting p7775 to 3, a warm restart is performed automatically.
During the following power-up, first all NVRAM data is deleted on the control unit.
The following are not deleted:
● CU operating hours counter
● CU temperature and
● Safety logbook
At the end of the deletion, the initialization data of the applications is in the NVRAM, similar
to as after a device automatic commissioning (with the exception of the above-mentioned
data).
Parameter p7775 is set to 0 at the end of the deletion.
Explanations for p7775
The following jobs can be issued via p7775:
1: Backup NVRAM data (on CompactFlash card)
2: Restore NVRAM data (from CompactFlash card)
3: Delete NVRAM data on CU
The acknowledgement of a job is delayed.
● If the job cannot be executed, it is acknowledged negatively.
● If the job can be executed, it is acknowledged with the value 255.
Acknowledgements of the parameter jobs
Table 6- 6 Acknowledgements of the parameter jobs
Value Cause
17 Request cannot be executed because of the operating state
20 Illegal value
107 Write access is not permitted (cause: At least one DO has a pulse enable).
As the SINAMICS has to perform a warm restart when restoring and deleting the data,
none of the connected drives must have a pulse enable
132 Parameter change blocked (see p0300, p0400, p0922, p7760, macro being executed)
204 Write access not permitted
255 "OK": Job being executed
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