Re: servo brake problem

The spindle solenoid and brake were already wired and working before
the retrofit process began since it was a Boss 6 CNC Bridgeport and
all the switches etc are already there. Problem is that I can't
figure out where the proper wire is that gives power to the solenoid
for brake. I did get good advice that there is a red button on the
end of the solenoid that when pushed did release the brake by
activating the solenoid!!! That is a useful piece of info for
anyone out there in the future working with these creatures to
remember! I am so thankful to have recieved the help.

If I can get the solenoid powered, I have a new relay to insert that
would power up the solenoid as needed when the spindle is powered.
It has AC on the control side that can be connected to the contact
side of the spindle motor control relay. On its contact side would
be the power to the solenoid. The contact side has two poles to
select from - normally open and normally closed. Seems like the
perfect solution to have brake on whenever there is no power to the
spindle as it was originally. Sounds logical?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, <james_cullins@s...> wrote:
> Good pint Doug
> It sounds like he need to provide a switch operated by the air
solenoid that
> will enable the motor only after the break is released. If it
doesn't
> already have one.
> Jim
> ----- Original Message -----
> From: "Doug Chartier" <doug@c...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, August 28, 2004 2:24 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Re: servo brake problem
>
>
> > At 01:31 AM 8/28/2004, you wrote:
> > >Still got the axis motor wiring problem in another
> > >question to tackle. I think I will eventually get to the
bottom of
> > >all this with a lot of help from my new CAD-CAM-EDM-DRO friends!
> >
> >
> > A bit more info that I just remembered.
> >
> > The times the spindle motor would not turn - when the air
pressure was low
> > or non existent - the inverter that runs the spindle motor
tripped
> > out. Since the inverter and the controller including the
solenoids are on
> > completely different circuits, that tells me the brake is
ENGAGED, thus
> > causing the inverter to overload when trying to start the
spindle motor
> > causing it to trip.
> >
> > If this is true, the fact that your spindle motor will not turn
may have
> > nothing to do with the motor or the wiring. Getting the brake
disengaged
> > may solve all your problems.
> >
> > Another guess - is it possible the brake solenoid is wired
backwards so it
> > provides air pressure when the pressure is supposed to be
released?
> >
> > Doug C.
> > Houston, Tex.
> >
> >
> >
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