CNC Project Needs Help: Slo-Syn Translator

dpolan@... wrote:

> I have an older Slo-Syn Translator, Model ST101A with no manual and
> need help getting it to drive a SLO-SYN stepper motor. The unit is a
> rack mount box with only a power switch, speed control pot, and a +/-
> switch (which I take to be a forward/reverse switch) on the front
> panel, and 10 screw terminals on back, labeled as follows. Can
> anyone clear up how to use these terminal assignments?
>
> 1 - RUN 1
> 2 - PU OUT
> 3 - CW PU
> 4 - CCW PU
> 5 - VO
> 6 - M1
> 7 - M3
> 8 - M4
> 9 - M5
> 10- +24V

A total guess here:
Instead of Step & Direction, it is the other type:
- Directional pulse (#3, #4) and perhaps term #2 is the ground for
those logic signals.
- Perhaps #2 is an alternate wiring of the pulse out which is connected
to the +/- switch on the front of the box. I'm guessing ground #4
and apply clock pulses to #3.
- M1-5 are perhaps the 2 coils of a bipolar driver.

You'd need a ground for the motor power side, and a ground for
the logic side (term #1 and term #5), but you might have to guess
which is which. VO's 'grouping' with 6-10 might indicated it
is the ground for the motor power, but why would they call it Vo ?

<fine print> just a wild guess, do it at your own risk</f>

Doug Fortune
http://www.cncKITS.com