RE: [CAD_CAM_EDM_DRO] Re: SLA7062 technical stuff - supply voltages

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of turyga1963
> Sent: Tuesday, 9 May 2006 6:21 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: SLA7062 technical stuff -
> supply voltages
>
> Dave,
>
> You're right...I wish I hadn't spent so much time looking for
> a transformer that would supply those extra volts!
>
> I think this is valuable information, but I also wonder what
> the end effect is on how the steppers operate?
>
> If a board is rated to 42vdc and you supply only 34vdc or
> even 24vdc, what happens? If you still have the amperage, do
> the motors still turn as fast with as much power? If not, is
> the effective decrease linear?
>
> Tom
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> <dave_mucha@...> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turyga1963" <TIntruder@>
> > wrote:
> > >
> > > Dave,
> > >
> > > Good to know. Problem in my case and I suspect that of many
> others
> > > who have had similar problems is that we were expressly told by
> HCNC
> > > that we could use up to 42vdc and the circuit board is even
> > > silkscreened to show that voltage. Further we were told the
> closer
> > > to 42vdc we got, the better as that would insure maximum
> power/speed
> > > from the steppers.
> > >
> > > Oh well, live and learn...
> > >
> > > Tom
> >
> > I found that many of the parts seem to fit well with existing
> > transformers.
> >
> > a 24V transformer times 1.414 to get 34 volts fits well to a 44
> volt
> > maximum unit.
> >
> > 48 volts to the Gecko offers about 66 volts to the drive. Again a
> > nice fit without leaving too much room for improvement.
> >
> > Some time ago, Mariss posted some results of life expectancy of his
> > drives. at 114 volts the life expectancy was something in the
> minutes
> > range. at 80 volts it was in the years, at 90 it was in the months
> > and only got worse as the voltage increased.
> >
> > I suspect that this is the case with all drives. there is a sweet
> > spot that offers a very long life and a bleeding edge where one
> > mistake, one time results in that sinking feeling you get when you
> > smell that magic smoke.
> >
> > Dave
> >
>
>
>
>
>
>
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