Re: [CAD_CAM_EDM_DRO] Re: IT'S ALIVE!!!

----- Original Message -----
From: mariss92705 <mariss92705@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, April 24, 2002 12:54 PM
Subject: [CAD_CAM_EDM_DRO] Re: IT'S ALIVE!!!


> Tim,
>
> To me that is a distiction without a difference. What are commonly
> reffered to as "brushless DC servomotors" are in fact 3-phase AC
> motors requiring external commutation (6-step Hall sensors or encoder
> feedback). When running, the motor drive signals are 3 AC waveforms
> offset at 120 degree intervals.
>
> Mariss
>
> --- In CAD_CAM_EDM_DRO@y..., "Tim Goldstein" <timg@k...> wrote:
> > If I follow correctly it is like a G3X0 drive except that it drives
> > brushless servo motors instead of the brush type motors that the 3
> series
> > use. What I don't remember is if it is brushless AC or DC.
> >
> > Tim
> > [Denver, CO]
> > http://www.KTMarketing.com.CNC.html
> >
> > ----- Original Message -----
> >
> > > Mariss,
> > > I must have missed the details on the development of this new
> drive.
> > > Could you tell us what is new and different about it from the "3"
> > > series?
> > >
> > > Thanks
> > > Sean
> > >
> > >
> > > --- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...>
> wrote:
> > > > Hi,
> > > >
> > > > I just got the G420 prototype to come alive. It works! It turns!
> > > It
> > > > servos! This is after correcting 4,723 board layout mistakes
> today.
> > > >
> > > > Mariss
> > >
>
>
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