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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