Thread
:
motor short ?
View Single Post
#
3
Posted to sci.electronics.repair
GregS[_3_]
external usenet poster
Posts: 742
motor short ?
In article ,
(Samuel M. Goldwasser) wrote:
(GregS) writes:
I have been looking at a centrifuge, and I have a manual.
The manual shows another controller, but the motor windings are
supposed to be 4 something ohms which seems reasonable.
The unit I have has a different controller and the motor reads about .7
ohms on any leg. There are 3 WYE legs. Seems like the wrong condition,
but I can't figure how a short would appear with equal ohms.
I'm now tring to unpack the motor to see if I can detect anything.
Probably different motor as well.
Well I seem to agree. I measured different winding points and its never above .7
ohms. I am going to assume its OK. I can't even find reference on the motor manufacturer.
The power drive module is really crazy. They went to a lot of trouble to build it,
and it near impossible to troubleshoot, allthough I find nothing wrong
with the 6 output power mosfets.
greg
Reply With Quote
GregS[_3_]
View Public Profile
Find all posts by GregS[_3_]