RE: [CAD_CAM_EDM_DRO] Spindle speed control, how does yours work?

Just a comment.

Whatever method you use, try to make it safe. That is it will shut down the
spindle if the controlling software stops or malfunctions.

For example, if you use serial or i2c and send the command say "S1000", and
have the spindle running, then exit the program, will the spindle stop or
keep running.

One solution is to continuously refresh the command, say, every 1/2 second.
That way if a command is not received for 1 second the controller will turn
off the spindle.

There are obviously a lot of other ways to do this though.


Peter Homann
mailto:Peter.Homann@...
Adacel Technologies Limited,
250 Bay St, BRIGHTON, 3186, AUSTRALIA
http://www.adacel.com <http://www.adacel.com>
Telephone +61 (3) 8530 7777, Facsimile +61 (3) 9596 2960
Mobile 0421-601 665

> -----Original Message-----
> From: John Johnson [mailto:johnatl@...]
> Sent: Friday, 16 January 2004 6:28 AM
> To: CAD_cam_edm_dro@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Spindle speed control, how does yours work?
>
>
> I'm working on controlling spindle speed control, input / output
> expansion, and I2C for TurboCNC.
>
> Looking for input on how your spindle speed is controlled.
>
> Is it serial? (baud rate?)
> 0-10v DC? (is it linear? rpms/v ratio?)
> Contact closures?
> Variable resistance?
>
> Thanks in advance for your input.
>
> Regards,
> JJ
>
> ps. I was going to call it Spindle Universal Control Kit / System, but
> then I realized, that sucks.
>
> pps. Excuse the post to two groups.
>
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