Re: [CAD_CAM_EDM_DRO] Re: Question for Kim Lux

I'd like to "over voltage" the motors so that they can run at a higher
speed. These motors have significant armature resistance and with a 40V
power supply we run out of supply voltage long before we are anywhere
near the peak current of the motors.

The max voltage spec on these motors and servo motors in general is
pretty soft. More important that max voltage is not exceeding a
practical speed limit, not exceeding max current, etc.

Kim

On Tue, 2003-12-23 at 17:31, industrialhobbies wrote:
> Color me ignorant. But why would you over-volt your servos so much?
> I run and sell Pittman's which are 24v motors, I can do 180 IPM
> rapids and all that other stuff. So what will you gain? Up to a few
> volts over isn't all the extra power just going to heat? Which
> servos don't like.
>
> Not that I'm attacking your position. If it works for you I wish you
> all the best.
>
> I'm just curious as of why?
>
> Thanks
> Aaron Moss
> www.IndustrialHobbies.com
>
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Kim Lux <lux@d...> wrote:
> > We are running the them with 40 volt supplies, Gecko 320s and US
> Digital
> > encoders, 500 CPR. With a 5 TPI ballscrew, this combo gives
> 1/10,000"
> > resolution and 150 IPM using TCNC.
> >
> > If I had to do it over, I'd use 60 or 80V supplies. It sounds like
> the
> > new version of TCNC is going to have a much higher stepping rate and
> > will allow 250 IPM with this sort of set up.
> >
> > Kim
> >