Re: (ET) dumb question on controllers.

[Robert Adsett <subscriptions aeolusdevelopment com>]

At 10:27 AM 2/2/05 -0500, Chapin, Tim wrote:
> Can you hook up a series motor controller to control a permanent magnet 
> motor?


Only under special circumstances.  It's one of those things that's possible 
to do, but it's also possible to destroy the controller in the 
process.  Deceleration (and the accompanying regenerative braking current) 
is the most troublesome spot.  You would need to add contactors in any case 
if you wanted to reverse direction.

If you don't want to reverse direction it's possible that Curtis have a 
uni-directional PM controller.  I'm fairly sure 4QD does.  It might also be 
worth checking SRE Controls.  I know they have/had a simple PM controller.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
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                        Kelvin Throop, III