Ciao Giorgio,
my other machine was actually sold to me without the enable pin in the
safety chain.
On Wed, 2017-04-12 at 16:19 +0000, giorgio foga wrote:
> Hi Valerio,
>
>
>
> Peter suggest obviusly is right,but in our laws (CE) if there is you must use
> the enable pin in the safety chain .... obviously if the machine is for you
> and only you can do as you please. I know it's something to be pedantic
> people ... but I think it is correct inform you since you're still under
> development.
>
>
> regards
>
> giorgio
>
> ________________________________
> Da: Valerio Bellizzomi <vale...@selnet.org>
> Inviato: mercoledì 12 aprile 2017 10.07
> A: Enhanced Machine Controller (EMC)
> Oggetto: Re: [Emc-users] mesa setup
>
> Thanks to all,
> now that I think to, on my other machine the driver enable is left
> unconnected, so I think I will leave them unconnected.
>
> Valerio
>
> On Tue, 2017-04-11 at 11:53 -0700, Peter C. Wallace wrote:
> > On Tue, 11 Apr 2017, Valerio Bellizzomi wrote:
> >
> > > Date: Tue, 11 Apr 2017 20:25:04 +0200
> > > From: Valerio Bellizzomi <vale...@selnet.org>
> > > Reply-To: "Enhanced Machine Controller (EMC)"
> > > <emc-users@lists.sourceforge.net>
> > > To: EMC Users <emc-users@lists.sourceforge.net>
> > > Subject: [Emc-users] mesa setup
> > >
> > > Hello,
> > > I am looking at the 7i76 manual and at the TB2 connector pinout (page
> > > 5), it is evident where to connect the step and dir wires, it is less
> > > evident where to connect the enable+ and enable- wires for each motor
> > > driver.
> > >
> > > What is the usual setup ?
> > >
> >
> >
> > Normally Step drive "enable" pins are actually disable pins
> > so the drive functions normally without these being connected
> >
> > In addition typically step drives are fairly safe in that unlike servo
> > drives, they will not move without step pulses
> >
> > So its most common that these pins are just ignored
> >
> > If they are actually enable pins (powered to enable drive),
> > they can be driven by a spare step/dir pin or 7I76 field output
> >
> > If your enable pins are actually disable pins (and you must power them to
> > disable the drive), and you feel you need to disble them for things like
> > emergency stop, perhaps the best solution is to drive them with a normally
> > closed relay contact so the drives are disabled until the relay is energized
> >
> >
> >
> > Peter Wallace
> > Mesa Electronics
> >
> > (\__/)
> > (='.'=) This is Bunny. Copy and paste bunny into your
> > (")_(") signature to help him gain world domination.
> >
> >
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