Hi, to be start with, I am having a two pump system hookep up with S7 200 Microwin. There were 2 unit of sinamics G110 drive attached to PLC with USS RS485 communication.

I replaced one of the drive to Sinamics V20 model today and set bus address and other parameter follow my old Sinamics G110.  However, my system does not start and there is no any error msg on sinamics V20.

Do I miss anything while do the conversion?

------------------------------------------------------------------------------------------
Split from V20 USS communication error.

Hello,

check the status of the V20, maybe faults or missing signals preventing you from starting.
If no errors are active, I would check parameters r0002, r0052 and r0054 to see the actual status of the drive.
Maybe some signals are missing.

For more details check the V20 operating instruction manual.
https://support.industry.siemens.com/cs/ww/en/view/109811111

Hello Technology Team,

Thank you for your inputs,

I've check parameter as your suggested. 

R0002 - 6 (Inverter inhibited)

R0052  - EB40

R0053 - 06A0

R0054 - 0000

 Hi

Use USB-PPI PLC Programming CABE USB to RS485 Adapter and check out this video.

U_275c35b9-2e57-4711-ae14-85e18e714f8d

Hi, to be start with, I am having a two pump system hookep up with S7 200 Microwin. There were 2 unit of sinamics G110 drive attached to PLC with USS RS485 communication.

I replaced one of the drive to Sinamics V20 model today and set bus address and other parameter follow my old Sinamics G110.  However, my system does not start and there is no any error msg on sinamics V20.

Do I miss anything while do the conversion?

------------------------------------------------------------------------------------------
Split from V20 USS communication error.