Saving the NVRAM data
The backup of the SINAMICS NVRAM data is performed by setting parameter p7775 to 1.
The following applies:
● Parameter p7775 can also be set to 1 during pulse enable.
● A warm restart is not required.
Note
The consistent backup of the NVRAM data must be ensured by the application.
Make sure that there is no change of the NVRAM contents during the backup.
The greatest possible consistency is achieved when
● Backup is performed during pulse disable or
● The drives are run down to 0 Hz.
The data is stored on the CompactFlash card:
● "....\USER\SINAMICS\NVRAM" for S120 CUs and SINAMICS Integrated
● "....\USER\SINAMICS\\NVRAM\xx" for CX32-2 (xx corresponds to the DRIVE-CLiQ port)
The data itself is stored in the PMEMORY.ACX backup file.
For the S120 control units, the data is stored on the CompactFlash card of the S120 control
unit.
Similar to the non-volatile SIMOTION data, an already existing PMEMORY.ACX file is first
renamed as PMEMORY.BAK and then the PMEMORY.ACX file is generated when you save
the SINAMICS data.
If an error occurs during backup, the BAK file can be used to restore the data.
Parameter p7775 is set to 0 at the end of the backup.
Restoring the NVRAM data
The SINAMICS NVRAM data can only be restored when none of the connected drives has a
pulse enable.
When restoring, the PMEMORY.ACX file is accessed first. If this is available and is error-free,
it is loaded. If no PMEMORY.ACX file is available or is corrupt, the PMEMORY.BAK file is
loaded (if available and error-free).
Restoration of the NVRAM data can be performed manually and automatically:
Commissioning (software)
7.5 Additional information on configuring the SINAMICS Integrated
SIMOTION D4x5-2
234
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
