Re: new stepper motors wiring mess ?fixed!

Thanks, I will just plug the power supply into the wall. I did not
know what the UPS power supply was doing that might possibly affect
the axis power supply. That makes it easier anyhow. I wish that
would fix my speed problem...

Keith
--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
wrote:

> Not necessarily a problem, just that you will need a pretty big

UPS to drive

> your motors.
>
> Also, make sure that your controller power supply can handle being

powered

> by a UPS-most (or at least many) UPS's don't put out a sine wave,

but rather

> a square wave that "equals" the 120VAC sine wave in RMS power.
>
> Some equipment will not stand this kind of a power source. Also,

the square

> waves coming out of the UPS will have a large amount of high-

frequency

> energy, which may get through your power supply and into the drive
> electronics-again, tit is a function of how good the filtering is

on your

> power supply. Most DC supplies are not designed for filtering out

HF energy,

> because the designer plans on having them powered by a pure sine

wave.

>
> Also, your motor drives may or may not be able to cope with this

stuff, if

> it DOES get through.
>
> Finally, I would think that if your spindle drops out due to a

power

> failure, you won't want your axis motors to keep moving. I would

think in a

> power supply situation, you would want everything to STOP.
>
> If the spindle was powered by the UPS, then maybe continuing, and

doing a

> manual stop and shutdown would work.
>
> Andy Wander
> Verrex Corporation
>
>
> -----Original Message-----
> From: Keith Clark [mailto:mail@t...]
> Sent: Saturday, August 28, 2004 4:08 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: new stepper motors wiring

mess ?fixed!

>
>
> I figured the power from the wall plug is dirty and if there is a
> power surge or brief loss of power (which happens all the time to
> our electrical supply) the drives would continue merrily along.
> Does that make sense? The drives are powered by a separate
> powersupply dedicated to them. Do you think there might be a
> problem with plugging into a a UPS?
>
> Keith