Re: [CAD_CAM_EDM_DRO] EZTrak spindle sense

I'm not familiar with the EZTrak mills but Bridgeport has a
habit of being consistent. In the past, the control detects
a relay closure that puts 24 volts on K5 pin 10 on the XDI
board. If this is still true, just jumper 24 volts to that
line. If that wont work, put a switch in the line that
actuates the magnetic motor start relays. The control should
think the spindle is on and you can switch between air and
regular.
Darrell

----- Original Message -----
From: <stratton@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Tuesday, October 10, 2000 7:32 AM
Subject: [CAD_CAM_EDM_DRO] EZTrak spindle sense


> I'm preparing to fit an auxialary air spindle to the
Bridgeport EZTrak
> DX cnc mill, and need to figure out a way to make the
control run with
> the main spindle turned off. After looking over the
circuit diagrams,
> it seems it would be a simple matter to add a switch in
parallel with
> the contacts on the spindle forward/reverse relays which
signal the
> computer that the spindle is running. I'll probably make
this same
> switch activate a solenoid valve to turn on the air to the
high speed
> spindle.
>
> My question: anyone done this? Anyone come up with
another method,
> that perhaps doesn't require drilling holes in the
electronics
> enclosure to run new wires?
>
> Thanks,
>
> Chris
>
> --
> Christopher C. Stratton, stratton@...
> Instrument Maker, Horn Player & Engineer
> 22 Adrian Street, Somerville, MA 02143
> http://www.mdc.net/~stratton
> (617) 629-9830 home (temporary), 253-2606 MIT
>
>
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