Hello all.
I have 200 kW ATV38 driver and this driver runs a 160 kW motor. It is a fan application.
Problem is :
There are big current differences at output. 120 - 160 - 200 A.
When I run the motor with the soft starter , everything seems O.K. Currents are balanced. When I turn back to driver I have big unbalanced currents.
I sent it to service , and service said there was no wrong thing in the driver and they said they tested it with 110 kW motor and it was O.K. They sent it to me again.
I made auto-tunning but the problem is still going on. Any idea for this ?
I have 200 kW ATV38 driver and this driver runs a 160 kW motor. It is a fan application.
Problem is :
There are big current differences at output. 120 - 160 - 200 A.
When I run the motor with the soft starter , everything seems O.K. Currents are balanced. When I turn back to driver I have big unbalanced currents.
I sent it to service , and service said there was no wrong thing in the driver and they said they tested it with 110 kW motor and it was O.K. They sent it to me again.
I made auto-tunning but the problem is still going on. Any idea for this ?