Re: Remember Mr. Bill's servo lite?

Dan: Thanks for that explanation. That's how I understand their operation as well.

I am just aiming at 200+ipm with an upgraded pc and emi reduction. May have to add an oiling system.

What's the fastest ipm with Servolite you have heard of? I have 20,000 pulses per inch, so the ps2501 opto's I think are a bit stressed. I have the scope down stairs. I'll look at the wave forms when I get a minute.

All: To me there's just as much danger using a variac in my shop, as when I plug in a toaster that is not isolated either. I deal with 400vdc every day. Dealing with electric power is always a risk. I'm leaving my system as it is.

Mike

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dan Mauch" <dmauch@...> wrote:
>
> A Variac is a autotransformer. An autotransformer does not provide
> electrical isolation between its windings as an ordinary transformer does;
> if the neutral side of the input is not at ground voltage, the neutral side
> of the output will not be either. A failure of the insulation of the
> windings of an autotransformer can result in full input voltage applied to
> the output. Additionally, a break in the part of the winding that is used as
> both primary and secondary will result in the transformer acting as an
> inductor in series with the load (which under light load conditions may
> result in near full input voltage being applied to the output). These are
> important safety considerations when deciding to use an autotransformer in a
> given application.
>
>
>
> Dan
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of mikep_95133
> Sent: Thursday, January 12, 2012 7:45 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Remember Mr. Bill's servo lite?
>
>
>
>
>
> Really? How so? It's only been a part of the system for years now.
>
> Mike
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com> , "Dan Mauch" <dmauch@> wrote:
> >
> > Using a variac isn't safe. You really shouldn't use one with your servo
> > system.
> >
> >
> >
> >
> >
> >
> >
> > Dan Mauch
> >
> > www.camtronics-cnc.com
> >
> > dmauch@
> >
> > Stepper and servo motors
> >
> > Kits, assembled and custom CNC using Gecko products.
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
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> [Non-text portions of this message have been removed]
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