Re: Spindle Speed with the GS2 Drive

["Dave Engvall" <dengvall-at-charter.net>]

Matt, Gene,

I'm not really the one to answer this but that guy...you
know...Ray...".hiding somewhere in the west" said something about S
commands using the axis just passed the declared axes to control the
spindle. Sure hope it is true as I'm making progress on the Mazak and should
post in the next few weeks about decisions and progress.

Dave Engvall

----- Original Message -----
From: "Matt Shaver" <mshaver-at-erols.com>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Tuesday, March 25, 2003 5:56 PM
Subject: Re: Spindle Speed with the GS2 Drive


>
> On Tuesday 25 March 2003 20:04, you wrote:
> >      This fall I am going to be involved with a retrofit of a
> > Wells-Index knee mill, model 810.  It currently has three axis movement
> > with servo drives (Westamp) and encoder (differential) feedback on each
> > axis.  The spindle is spun by a 3 horse, 3-phase, 1800 RPM, 220 VAC
motor.
> >
> >      The "iron" is in excellent shape, but the electronic control is by
> > Sharnoa that needs to be scrapped.  We are going with the Servo-to-Go
> > card, a BDI box, and whatever else it takes for a professional retrofit.
>
> I retrofitted this exact machine with this exact setup a few years ago. It
> works fine and it was very easy to do. Wish I had pictures... Basically, I
> pulled out the Sharnoa control (an S-100 computer for those who know what
> that is) and put a shelf in the cabinet. A PC in a desktop style enclosure
> slid right in and I saved the amps, power supply, and encoders. The I/O
was
> done with an Opto22 board controlled through the parallel port on the PC
and
> using the existing 24Vdc relay logic on the field wiring side. I also had
to
> remove the operator controls mounted on either side of the spindle housing
as
> those functions are now controlled through the PC running the EMC, as well
as
> the paper tape reader and the operator display on top of the control
> cabinet..
>
> Sorry to say that I didn't do anything with spindle speed control, just
> forward and reverse so I'm not much help. Al least you know you're not the
> first one to do one of these machines...
>
> Matt
>
> P.S. Fred Proctor took some pictures of this machine, maybe he's got 'em
> somewhere, although I don't know if he got any of the inside of the
control
> enclosure.
>
> P.P.S. One of the old amps (the Z axis) finally went bad a couple months
ago
> and I replaced it with a Servo Dynamics amp which is working well.
>
>