Re: sherline motor/speed control wiring IT WORKS!

Hey guys, great news! First, I by-passed the thermal protection
thingy and the motor and speed control work perfectly :) Second, I
read and studied about connecting I1 and I2 together to cause
a "brake/inhibit" action and it TOTALLY worked!!! Yes, when I
connected I1 and I2 together the motor came to nice stop and when you
unconnect I1 and I2 the motor accels like normal!!!! Yippy! Now, its
just a matter of hooking up a relay or transistor to do the
connecting/unconnecting for me through CNCPro! I also noticed if you
stop the motor by hand when you turn off the power and then turn it
back on right away the motor "jerks" for a second. If you let it
spool down on its own or wait a little longer, then turn on the power
it will not "jerk" like that-probably time needed for a capacitor to
discharge or something.
We're almost there!!!!
tauseef

--- In CAD_CAM_EDM_DRO@y..., "tauseef" <alieron@h...> wrote:
> 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 ,----.___________ ______________
> _________________
> > ProtoTrains // = = === == || == == == = || == ==
==
> = == =|
> > Rio Vista, CA, USA /-O==O------------o==o------------o==o--------
--
> -o==o-'
> > zephyrus@r... http://www.rickadee.net/~zephyrus