Re: commercial stepper controller

Jimmy

I didn't find much either, although there is a Russian heavy equipment
company that comes up using that name. The Centent brand that I have has
more terminals than what you describe. They are listed in common English
and are marked for:

Power in (2),
Phase A - D (4),
Step and direction and +5v (3),
and Current limiting (2).

I can't imagine why anyone would build a stepper amp like the one I'm
suggesting that you hook up below, but they might. I'm assuming that you
listed the terminals in order.

If it were mine, and I didn't have much invested, I'd try hooking B and D
of a small stepper to P.O. Connect motor A to H.A and B to O.H Connect
the 0 volt side of a 5 volt supply to P.0. Run the plus side of the 5
volts through some kind of current limiting resistor (small 110 volt light
bulb?) and touch it to M.F. If you don't get to many sparks or to much
light, connect it and see if the stepper freezes or gets harder to turn.
If so you could probably remove the current limiting. Connect power to the
controller again and try touching the five volt through a 10k resistor to
cw and see if you get a step. A touch to the other might give you a step
back.

If it doesn't step you might try touching a 1.5 volt battery across the
cw/ccw terminals and see if it steps. Reversing the battery might step
back. If it works, you are on your own.

These are not the opinions of my company - nor any person in their right
mind. So if you follow them, when the smoke clears and the roommate quits
berating you, throw the whole mess in the scrap bin (ebay) and buy a
controller with paperwork.

Better yet go back through previous posts and buy one that is
designed/sold/supported by folk who subscribe to this list.

Ray

-----om-----

> From: jimmy staton <staton@...>
>Subject: commercial stepper controller
>
>I posted a earlier message to the list about a Melec controller. I was
>afraid that
>no one would have any info on the controller. Anyway I've never used a
>commercial controller can someone tell me what the terminal markings
>mean they're
>CW, CCW, M.F, P.O, H.A, O.H and then there is a switch block that has
>Full, HP, H
>and Half, LP, L I understand the Half and full step but the rest is
>beyond me.