Sinamics s120

Why in output electrical drive exist dc voltage(about 300 volts DC) in stopping mode in sinamics s120?

This is not DC injection, because drive is off and motor is braking.

I don't know, but I think this is electromagnetic surge,, because when that other drives is workingh this voltage generated

Hello,

to be honest I just do not understand your question, sorry.

Are you wondering why the DC link voltage is rising when you brake the motor?

I said that drive is off,I didn't say motor braking

Can you please explain your configuration?

Do you have a S120 booksize configuration with several motor modules at the DC link? Which type of infeed module do you use (basic line, smart line, active line)?

bjr balouki, please define your drive ref how long this DC voltage has remained. Where you have to measure this intermediate circuit voltage. entered where well. output converter.

power ref



 

I think it is definitely splendid idea to take the plenge about what you post that confinguration list up related to sinamice drive system in order to identify that system inside out together. 

I am not sure whether you did not need to share that confirmation.

please let us know if it possible.