ChristophD

Hello,

this is a feature with SINAMICS V4.6 and the new 2GB CF Cards.
On the Card are 2 partitions, a working part and a backup part.

If you make a parameter change and RAMtoROM on the working partitions the system needs
a reboot to tranfer the changed data to the backup partition.
This reboot can be a power off/on or p972=1.

The funconality is described in capter 13 in the function manual

Regards
Christoph

 Dear Expertise

         We encounter some trouble when we try to set p972=1 to reset CU320-2PN

      Our set up is CU320-2PN with S120 booksize compact, SW5.2HF1, It seems the CU320 stuck at boot up status when we set p072=1, the LED of CU320-2PN is stop blinking, and X150 and X127 is not accessible. 

       And for detail please check link:  My post

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Split from Sinamics S120 problem during saving RAM to ROM.

Closed cause question posted twice.

The second thread with the subject CU stuck after p972 set to 1 is published within the conference SINAMICS.

Best regards,