Re: [CAD_CAM_EDM_DRO] Re: Turning Spindle Off and On

I used optos to control on/off and direction on the a kb vfd. They
worked OK. The inputs to that VFD AREN'T at normal logic levels, ie 0
and 5V, thus an isolator or relay is required.

On Fri, 2004-12-17 at 16:26 +0000, kadeshan wrote:
>
> Ok, I am going to order the Solid State relay from Fred today, I
> have a vfd drive running a 3 phase motor. Here is a link to a
> schematic for the control. I am assuming I run a 5v pin and ground
> pin from the break out board to the SSR. Then where do I hook the
> other terminals on the SSR to the vfd? Here is the link
> http://www.kbelectronics.com/manuals/kbvf.pdf
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "JamesCullins"
> <james_cullins@s...> wrote:
> > It will disable the out signals in the absents of the charge pump
> signal
> > form Mach2.
> > This signal is a tone of about 13 kHz. When Mach2 is reset the
> signal
> > appears and the out puts are enabled. If Mach2 isn't running then
> you get
> > nothing out.
> > Jim
> > ----- Original Message -----
> > From: "turbulatordude" <dave_mucha@y...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Thursday, December 16, 2004 7:39 PM
> > Subject: [CAD_CAM_EDM_DRO] Re: Turning Spindle Off and On
> >
> >
> > >
> > >
> > >
> > > > ///What about opto-isolation? Wouldnt there be a risk of
> damaging
> > > the PC electronics wiring up auxillary equiptment directly to the
> > > port?
> > >
> > >
> > > All the SSR's I have looked at have opto isolation as well as do
> > > Gecko's.
> > >
> > >
> > > The Cambell board does offer additional features that may or may
> not
> > > be required.
> > >
> > > There are a lot of people who wire directly into the port, from
> > > electronics hobbyists, to telescope people to machine tool people.
> > >
> > > Also, for my machines on machine tools, I keep them dedicated and
> > > simple software loaded.
> > >
> > > If you plan to surf the internet and use your machine as a general
> > > purpose machine, while you use your Bridgeport, you accept the
> risk
> > > of a virus doing bad things as well as having your registry
> cluttered.
> > >
> > >
> > > > Other breakout boards have the ability to control Solid state
> > > relays however like the PMDX has no "watchdog" feature that
> monitors
> > > erroneous pulses from the PC (it didn't two years ago anyway and
> they
> > > didn't sound too concerned about changing it).
> > >
> > >
> > > I'm not sure what signal the Cambell board does that
> differentiates a
> > > signal to the port from an erroneous signal.
> > >
> > > Dave
> > >
> > >
> > >
> > >
> > >
> > >
> > > Addresses:
> > > FAQ: http://www.ktmarketing.com/faq.html
> > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
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> > [Moderators]
> > > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > >
> > > OFF Topic POSTS: General Machining
> > > If you wish to post on unlimited OT subjects goto:
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> > >
> > > http://groups.yahoo.com/group/jobshophomeshop I consider this
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> > sister site to the CCED group, as many of the same members are
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> > subjects, that are not allowed on the CCED list.
> > >
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>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
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> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
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> Yahoo! Groups Links
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--
Kim Lux, Diesel Research Inc.