Re: Voltage for Full Stack NEMA 23 stepper?

Hi Bob,
I have some motors like that (from eBay:deepgroove1). You can run
them with my drive, see:

http://www.xylotex.com

You can run them in series at full amp rating(1.75A = 100% max). Or
you can run them slightly derated in parallel rating(2.5A = ~70%
max). I have run them in parallel and got excellent results (much
better than series) with a 24V power supply, but a fan is required
for the drive.

Although the max for my drive is 35V, this is absolute max, while
typical running max is 90% of that, or about 30V. 24V power supplies
are readily available, see the following for some switching supplies:

http://www.mpja.com/list.asp?dept=3
http://www.mpja.com/list.asp?dept=8

For more info on the drive, see the web site (xylotex) above.

Jeff

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "bereshr1 <bereshr1@y...>"
<bereshr1@y...> wrote:

> Hi There.
>
> So in the hunting and gathering process for my future CNC router /
> mill I stalked and killed three NEMA 23 stepper motors. They are
> spec'd out as Pacific Scientific Powermax II motors - 8-lead. I am
> planning on running them bipolar (for nice, and mean projects) in
> series. They are rated at 1.75A but none of the literature specs a
> VOLTAGE at which to run them. On the label, it says "Vs(dc): 65V".
> Normally, I would take this to mean that this motor is designed for
> 65VDC.
>
> Is this the case with a stepper motor of this type?
>
> Most of the controller boards I've seen only have capability for up

to

> 35V. Any recommendations?
>
> Thanks in advance for your help.
>
> Bob