Re: Thanks - was: Things to check? is now: RUNNING~!

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Weyland <weyland@v...> wrote:

> On Thursday 18 September 2003 01:31 am, Jon Elson spake:
>
> > >Motors got very warm to the touch after a little running.
> > >I could grasp a motor, but only for about
> > >10 seconds before it got very uncomfortable.
> >
> > Gee, that doesn't sound so good. After 2 hours or so, that might

be

> > acceptable, but if it gets that hot in 10 - 15 minutes, they will

burn

> > up. You may have to reduce the voltage, or the current.
>
> Well, the spec sheets on the motors _say_ they are 7.5A.
> I'll dial the variac down and see what happens.

If you SERIES wire the motors, then use HALF AMPS.

they will be slower, but COLD.

it sounds like you might have series wired AND used full amps ?

I would say to work the machine thru some paces before you start
shooting for high speeds.

How fast are you stepping/pulsing ?

Dave