Data Backup; Backing Up The Non-Volatile Memory - Siemens SINAMICS S120 Function Manual

Basic information about the drive system

12.6 Data backup

12.6 Data backup
12.6.1

Backing up the non-volatile memory

For operation-relevant data, the CU320-2 and the CU310-2 have a non-volatile memory, the
NVRAM (Non-Volatile Random Access Memory). The data of the fault buffer, the diagnostics
buffer and message buffer is saved in this memory.
Certain circumstances, for example, a defect in the Control Unit or if the Control Unit has
been replaced, require that this data is backed up. After the hardware has been replaced,
transfer the backed up data back to the NVRAM of the Control Unit. You can perform these
operations using parameter p7775:
1. p7775 = 1 backs up the NVRAM data on the memory card.
2. p7775 = 2 copies the NVRAM data from the memory card to the NVRAM.
3. p7775 = 3 deletes the data in the NVRAM.
p7775 is automatically set to 0 if the operation was successful. If the operation was not
successful, p7775 indicates a corresponding fault value. Further details of the fault values
can be found in the SINAMICS S120/150 List Manual.
Note
NVRAM data change
The data in the NVRAM can only be restored or deleted if the pulse inhibit is set.
Backing up NVRAM data
With p7775 = 1, the NVRAM data of a stand-alone Control Unit is saved in the subdirectory:
"... \USER\SINAMICS\NVRAM\PMEMORY.ACX" on the memory card. If a file with this name
is already in the folder on the memory card, then this is renamed "...\PMEMORY.BAK".
When the Control Unit is integrated in a control system, the NVRAM data is saved in the
subdirectory: "... \USER\SINAMICS\NVRAM\xx\PMEMORY.ACX" on the memory card. "xx"
corresponds to the DRIVE-CLiQ port.
When saving, all data is backed up from the NVRAM.
Note
Backing up NVRAM data
The backup of the NVRAM data to the memory card is also possible when the pulses are
enabled. However, if the drive is operated when NVRAM data is being transferred, then it is
possible that the backed up data is not consistent with the NVRAM data.
866
After the data has been successfully cleared, a POWER ON is automatically carried out.
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions