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#21478 - 08/25/17 07:08 PM OVF30 converter phase imbal  
Joined: Jan 2017
Posts: 5
dragisa008 Offline
stranger
dragisa008  Offline
stranger

Joined: Jan 2017
Posts: 5
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?

#21479 - 08/26/17 08:17 AM Re: OVF30 converter phase imbal [Re: dragisa008]  
Joined: Aug 2011
Posts: 563
uppo72 Offline
addict
uppo72  Offline
addict

Joined: Aug 2011
Posts: 563
Have you tested the isolated motor phase resistances and insulation resistance?

#21526 - 09/04/17 08:09 AM Re: OVF30 converter phase imbal [Re: uppo72]  
Joined: Jan 2017
Posts: 5
dragisa008 Offline
stranger
dragisa008  Offline
stranger

Joined: Jan 2017
Posts: 5
I have tested the isolated motor phase resistances and insulation resistance and it is ok. What else could it be?

#21527 - 09/04/17 11:10 AM Re: OVF30 converter phase imbal [Re: dragisa008]  
Joined: Jan 2017
Posts: 5
dragisa008 Offline
stranger
dragisa008  Offline
stranger

Joined: Jan 2017
Posts: 5
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.

#21529 - 09/04/17 03:01 PM Re: OVF30 converter phase imbal [Re: dragisa008]  
Joined: Dec 2015
Posts: 1,528
Indirtwetrust Offline
ElevatorPractitioner
Indirtwetrust  Offline
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,528
Local 18
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.

#21538 - 09/05/17 07:17 PM Re: OVF30 converter phase imbal [Re: Indirtwetrust]  
Joined: Jan 2017
Posts: 5
dragisa008 Offline
stranger
dragisa008  Offline
stranger

Joined: Jan 2017
Posts: 5
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.


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