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[?]: ABB ACS550 Drive not responding

Posted: Fri Feb 08, 2013 5:10 pm
by lemchast9
Hi:
We have got a problem with an ABB ACS550 drive, two modules of the rectifier damaged, we installed new ones and the drive power on.
But on the panel appear drive not responding, and I can not control the drive.
I have communicated with the interface port with drive windows light 2.9 and I have made a backup of the parameters and I have tried to start the motor, It starts but the communication with the PC is lost.
Anybody solved the problem drive not responding (5001) in this drive??
Thank you for your help.

Re: Drive not responding

Posted: Tue Sep 03, 2013 3:53 am
by vnnghia_bk
The octo coupler for communication has problem.Call ABB for warranty is the best

Re: [?]: ABB ACS550 Drive not responding

Posted: Fri Feb 02, 2024 11:22 am
by lin2m3
It is an old thread, but I have 2 drives ACS850 with the same problem. Drive not responding. I inspected all optocouplers on the control board. All are ok. Any hint will be appreciated.