Re: [CAD_CAM_EDM_DRO] Re: Thanks Mariss/Where are you!

Paul you are just trying to build a DC-welding unit!
That is one of the reasons why Mariss doesn't go higher with voltage.
Sven Peter

sprooney797 wrote:

>
> Mariss Wrote:
> > (3) Sure as God made little green apples someone will run it off of
> > rectified 115VAC, kill himself and more lawyers will become rich at
> > my expense.
>
> Mariss, running from a rectified 115vac source sounds very appealing,
> and I must admit that is why I would like a drive that is rated to
> handle the higher voltage.
>
> If the circuit is properly grounded and fused, where is the danger in
> doing this? I believe many of the industrial servo drives work off of
> a rectified AC source.
>
> Would the use of an isolation transformer make it any safer?
>
> Or is the risk because of the use of home-made cables and cobbled up
> control boxes?
>
> Just curious as I'd love to do away with the large DC power supplies.
>
> Sincerely,
>
> Paul Rooney
>
> --- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...> wrote:
> > Eric,
> >
> > Couple of problems with a 160VDC rating:
> >
> > (1) The drive becomes larger and more expensive.
> > (2) The market for that class drive is much smaller.
> > (3) Sure as God made little green apples someone will run it off of
> > rectified 115VAC, kill himself and more lawyers will become rich at
> > my expense.
> >
> > The ethernet cores are interesting but they are a little more
> > expensive and I don't know what the CPU overhead will be to use
> > ethernet. I am writing the stuff in assembly because every
> > microsecond counts.
> >
> > I've got the point-to-point, linear interpolation and circular
> > interpolation algorithms worked out. The point-to-point one is
> > written up and running already, so I am just about 1% finished with
> > the project.
> >
> > Mariss
> >
> > --- In CAD_CAM_EDM_DRO@y..., "unterhausen" <unterhausen@y...> wrote:
> > >
> > > Mariss,
> > > Just don't buy any of the rcm2300 ethernet rabbitcores, ok? Darn
> > > things are really hard to get right now. I keep wondering why the
> > > voltage on your drives are so low. I would own some 320's right
> > now
> > > if the voltage went to 150 or so. Are you thinking about going
> > > higher with the brushless amps?
> > > Eric
>
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