Re: [CAD_CAM_EDM_DRO] Stepper Question (Newby)

Maybe there is current reduction when sitting still. so moving a 150 at
reduced current would be easy. does his controller do reduced current? i am
not familiar with his control. cul brian f.

----- Original Message -----
From: "Art Fenerty" <fenerty@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, December 04, 2001 10:48 PM
Subject: Re: [CAD_CAM_EDM_DRO] Stepper Question (Newby)


> Hi Alan:
>
> A good preliminary test is to tell your motors to turn very slowly.
Even
> if your current is too low, or voltage is too low, you will normally have
> lots of power when going slow. Does your motor click forward, then back,
> when you do this? This would indicate a defective wiring on one phase.
Does
> this loss of power only happen when you go fast? This would indicate a
> current which is too low. The SP3 kit is a little underpowered for larger
> motors, but should work fine for lower ones. 150 oz/in is about the max
you
> would wish to drive with it. All stepper motors will show the symptoms you
> describe if you try to go too fast for the motor's power conditions. Is it
> better in one direction than the other? , this can indicate that you are
> pulseing the controller with the wrong polarity signal (Though most
> controllers are mostly unaffected by this). The problem your having is not
> uncommon and I have had questions on it from many different people over
the
> past year, most with different solutions. Send us some more information
and
> I'm sure someone here can help solve the mystery.
>
> Art
> Master5 Software
> http://users.andara.com/~fenerty/master.htm
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>