Re: sherline motor/speed control wiring

Randy,
Yes the I1 and I2 do sound tempting. Thank you for the link, I will
look into it more. I am glad that the timing was good for you. I
wondered about the wiring for a while and I guess the ZAP! gave me a
reason hehe. I know a few others are working on getting this spindle
on/off thing worked out. When it does, hopefully they will let all of
us know. If and when I do, I will let you guys know how to do it.

Alan you bring up and interesting twist to the whole "spindle on/off
quest" with speed control. Actually at the KB electronic site under
the manuel they do say this:

"Voltage Following- All models can be controlled with an ISOLATED
analog reference voltage (0-7 VDC) in lieu of the main speed
potentiometer. The voltage is connected to P2(+) and F-. The control
output voltage will linearly follow the input voltage. The source
impedance of the input should be 10K ohms or less. The Min and Max
trimpots are rendered inoperative in the voltage following mode. Use
auxiliary trimpots for scaling and to limit the control range. If the
input signal is not isolated, or is a current signal (4-20 mA), the
KBSI-240D or SI-5 Barrier Terminal Board Signal Isolator must be
used. It wil allow direct connection to process controllers and
microprocessors."

later
tauseef



--- In CAD_CAM_EDM_DRO@y..., Randy Gordon-Gilmore <zephyrus@r...>
wrote:

> At 04:25 PM 3/3/01 -0800, Randy Gordon-Gilmore wrote:
>
> >"The Inhibit™ circuit (terminals I1 and I2) is provided to

electronically

> >disconnect the armature output voltage."
>
> I found some information on the Inhibit circuit at
>
> http://www.kbelectronics.com/pass/tech/1033.html
>
> (I had to register with their site to find that...)
>
> Best regards,
>
> Randy
>
> Randy Gordon-Gilmore ,----.___________ ______________

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