Posted By: dragisa008
OVF30 converter phase imbal - 08/25/17 07:08 PM
Hi there. I am getting this error F52 Converter phase imbal on Otis OVF30. I checked input AC line voltage and current and it seems ok. What else could cause this error?
Posted By: uppo72
Re: OVF30 converter phase imbal - 08/26/17 08:17 AM
Have you tested the isolated motor phase resistances and insulation resistance?
Posted By: dragisa008
Re: OVF30 converter phase imbal - 09/04/17 08:09 AM
I have tested the isolated motor phase resistances and insulation resistance and it is ok. What else could it be?
Posted By: dragisa008
Re: OVF30 converter phase imbal - 09/04/17 11:10 AM
This error appears regardles if elevator is moving or it is standing still. After a few minutes when elevator receive call, OVF30 reset error and starts running. Then again after some time error appears and so on.
Posted By: Indirtwetrust
Re: OVF30 converter phase imbal - 09/04/17 03:01 PM
I am not an expert on these drives or anything but... Our tech support is pretty quick to say send in the drive when we start to get those faults. I don't know what fails on them but they come back working.
Posted By: dragisa008
Re: OVF30 converter phase imbal - 09/05/17 07:17 PM
Indirtwetrust, you were right. It was problem in UD2 driver board. Once I replace it drive OVF30 start to operate normal. There are no more drive errors.