Re: [CAD_CAM_EDM_DRO] GE 1050CM control

Jon
I'm not sure about whether it would go 250 ipm (not fpm!!) in 4-axis
simultaneous but that would be my minimum requirement. Everybody so far
"thinks" it will but I'd like to hear a more definite answer from someone
who really knows. As for the the tapes, the executive stays the same and
you edit/change the MSD tape to suit the machine. The MSD is in readable
code not binary and the programming is explained in the GE handbook.
Gus

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, June 07, 2002 3:23 PM
Subject: Re: [CAD_CAM_EDM_DRO] GE 1050CM control


> accellodyne wrote:
>
> > Anybody know about GE 1050 controls (1981) on an old Monarch VMC75?
> > I have a 4-axis model and want to add an axis to make it five.
> > According to GE, they think it will work but I'd like to hear from a
> > nuts and bolts guy that it will work if done properly. I understand
> > I will need to rewrite the MSD tape and install some more boards,
> > calibrate, etc. Before I go thru all that I want to be sure the
> > control will produce simultaneous 5-axis movement at 250 SFPM. I
> > want to drip feed 5-axis code to the control with a BTR and a PC. I
> > don't need compensation and all the fancy canned cycles that are
> > normally in most controls.
>
> Does this system provide simultaneous 4-axis motion at 250 IPM?
> That's pretty amazing. I had an Allen-Bradley 7320, a contemporary
> of yours, and it was VERY sluggish, as it only had a 100 Hz servo update
> rate. That gave it about a 3 Hz system bandwidth. Unless the machine is
> really huge (like 50-foot bed) I can't imagine going 250 IPM with the AB.
> (You must have meant 250 IPM, not SFPM in your message, as that would
> be 3000 IPM! Anyway, SFPM is usually used to measure cutting tool
> motion, and IPM is used for feed rate.)
>
> Do you have the facilities to change the executive program? (I assume
> that is what you are talking about with the "MSD tape".) I didn't, as
that
> was done at the factory, I guess. I made some small changes by editing
> the binary code, but I wouldn't waste that much time on it again.
>
> The main reason to have a long think about this is the reliability of
these
> old controls. I ran the A-B for about 6 months, and had 3 major
breakdowns
> on it. Although I could diagnose and repair these problems, it was
becoming
> a pain. I replaced it with a PC and the EMC program, and have had no
> problems with that, in 2+ years of use. Look up the prices of repair
boards
> for your GE control before going any further.
>
> Jon
>
>
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