RE: [CAD_CAM_EDM_DRO] Stepper motors and increased Amps

Hi Tim,

The motors are Shinnano Kenshi Co.Ltd. STH-55D203-02, 1.8 Deg/Step, 5.1V,
1A, 6 wire. I have them wired up in Bipolar mode to Dan Mauch's 5 AMP
Bipolar Controller cards, currently running 26.5 Volts for the stepper
motors in 1/2 step mode.

John Guenther

> -----Original Message-----
> From: Tim Goldstein [mailto:timg@...]
> Sent: Monday, January 08, 2001 4:58 PM
> To: CAD_CAM_EDM_DRO@egroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Stepper motors and increased Amps
>
>
> From my understanding you will not want to increase the amperage. You also
> have to understand how the ratings are figured. If they are for
> unipolar and
> you are using bipolar series you have to lower the amperage by about 40%
> from the unipolar rating.
>
> Please tell us more. How are the motors rated (unipolar or
> bipolar) and how
> are you wiring and driving them?
>
> Tim
> [Denver, CO]
>
> > -----Original Message-----
> > Ok, here is my stupid question for the day:
> >
> > If I have steppers that are rated at 5.1 volts, 1 Amp can I safely
> > increase the current to 1.5 Amps without blowing the motor? How much
> > over the rated current can a stepper motor safely handle?
> >
> > Ok, I know, that's two questions not one.
> >
> > John Guenther
> > 'Ye Olde Pen Maker'
> > FAQ: http://www.ktmarketing.com/faq.html
>
>
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