S120 CU310 lost parameter after power on

Hi to all,

I have a strange problem never happen before. I make the parametrization of a drive S120 with CU310 like other several times. The firmware is 5.2, after the parametrizazion of the safety advanced and save RAM in ROM and the upload of the parameters from online to offline with starter V5.3 HF3, i restart the drive. 

I go online and the offline and online is different!!

I am going crazy. Can be a problem of the drive?

The only think different from other times is that the motor is a drive click.

It is like that the drive lost some parameters.

Many thanks.

Hello,

Perhaps the following manual might help:

SINUMERIK 828D SINAMICS S120 Parameter description

P0971: Save drive object parameters / Drv_obj par save

             Setting to save the parameter of the particular drive object in the non-volatile memory.  When saving, only the adjustable parameters intended to be saved are taken into account.

 Value:          1: Save drive object

P0977: Save all parameters / Save all par

             Saves all parameters of the drive system to the non-volatile memory. When saving, only the adjustable parameters intended to be saved are taken into account.

Value:          1: Save in non-volatile memory - downloaded at POWER ON 

Hi,

Thanks for the answer, but why save RAM in ROM this time doesn't work like before, something is change in the drives?

Many thanks

Hello,

Perhaps the attached manual might help:

SINAMICS S120 Function Manual Drive Functions

Saving parameters in a non-volatile memory :

The modified parameter values are stored in the volatile RAM. When the drive system is switched off, this data is lost.

The data must be saved retentively on the memory card, so that it is available the next time the drive is switched on.

● Save parameters - device and all drives p0977 = 1; automatically reset to 0

● Save the parameters with STARTER See "Copy RAM to ROM" function