Re: [CAD_CAM_EDM_DRO] Auto Tool Changers - EMCO

Hi Bill,

What signals go in? from the computer? Why not try to take advantage
of the board, and just interface it? What Schematics/ block diagrams do
you have?

If we use the DC motor, do you have access to one that's running? We
could time the motor fwd and reverse "run times", and use essentially
use an H-bridge to run the motor. Probably what they did. What
current? What voltage?

Alan KM6VV


wanliker@... wrote:

>
> In a message dated 2/26/2002 10:03:01 AM Mountain Standard Time,
> smoke@... writes:
>
> > I was wondering after reading your post if those timers were actually
> > stepper switches. Then I thought, 'they must be timers, Bill should know
> > what he's got'.
> >
> >
>
> I have not really closely looked at the boards, but assume they are timers,
> because they operate for a definite time forward, then a time in reverse.
> When indexing more than one position, they go forward, stop, go forward
> again, then finally reverse.
>
> The main clincher in my thoughts about timers is the fact that the motor is a
> two wire DC MOTOR, not a stepper. The polarity of the motor reverses to go
> backwards.
>
> The board is 5 x 5.5 double sided traces, with a parts count of 8 IC's, 18
> transistors, three LEDS, One Relay.
> The main output will be the DC motor, it will also report to and accept from
> the computer the signals as what it is to do.
> When it is removed, no other functions are lost. Except possibly display
> information.
> bill
>
> [Non-text portions of this message have been removed]
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