Re: How do you connect AC servo motor up

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:

>
> cnc_4_me wrote:
> > Do AC servo motors all have same pinout on them for wiring as in universial connector. If not, how do you figure out wiring for a surplus motor.
> >
> No, it is a LOT more complicated. Usually the motors are 3-phase,
> permanent magnet, but there can be other types.
> It is common to have Hall sensors for commutation, but not all motors
> have these sensors. There are several schemes
> for orienting these sensors to the motor poles. The motors typically
> have 8 poles, but some may have other pole counts.
> Encoders have all sorts of combinations available, some have the
> commutation tracks and some don't, etc. If the encoder has
> the commutation signals, then the alignment of the encoder to the
> motor's poles is critical. Also, some motors, such as Yaskawa,
> Panasonic and Fanuc often have something proprietary about the
> commutation or encoder signals.
>
> So, not only is the connector totally NOT standard, the signals
> themselves vary quite a bit.
>
> Jon
>

You sure know how to depress a man. So much for undocumented Ebay motors.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220385535101&ssPageName=STRK:MEWAX:IT

These are the ones i wanted to get. But i can not find word one on them.

cnc4me