Re: [CAD_CAM_EDM_DRO] stepper wiring

Hi Mark!

Funny you should ask! I just wired up two old SloSyn's last night. I
don't have the motors in front of me (I will tonight!), but the wire
colors are exactly what I have. As you've found, two "sets" of wires,
three wires per winding. You'll also find that the resistance from one
wire to the others is one of two values. The wire that is the "same
resistance" to either of the other wires is the "center tap". I'll mail
you again tonight if you want me to ID the colors for you.

Next question, is the Oatley Electronics driver a "BIPOLAR" or
"UNIPOLAR" Driver, and what voltage/motor current does it expect? (and
what spec's do you have for YOUR motor?)

For Bipolar use, you can ignore the "center taps", and just use the
"ends". For UNIPOLAR, you will connect BOTH center taps to the "common"
connection, leaving four (4) "ends" to be connected to the four coil
connections.

The Ground and positive connects sound like they are for motor power.
What does your schematic look like?

Unipolar drivers often want higher voltage, low current motors, while
the chopper drivers are often low motor voltage, and high (several amp)
current. What model Superior Electric (SloSyn) motors do you have?
M062, M091 etc. are typical for the starting numbers of motors. SS50?
another S/S motor.

If you are positive on the proper connections to the board, and you only
have 4 motor connections, then it's BIPOLAR (use the 4 ends, ignore the
center taps).

Hang on mate! We'll get you spinning in no time!

Alan KM6VV
P.S. Oatley Kit K142? I couldn't download the instructions. 5-50V, max
current 14A, should drive just about anything.


mabw@... wrote:

>
> Hi list!
> Can anyone help me with wiring up some old slo/syn steppers,
> they are six wire jobs, the black, red and red/white wires all have
> continuity with each other ( one phase?) white, green and white/green
> wires the same thing(the other phase?). I need to wire them to a
> driver board from Oatley Electronics (anyone used these?) . The board
> has six spots to wire to, starting from the left on the board is
> ground then two spots for mototr b(one phase?) then two spots for
> motor A (the other phase?) then a spot for positive, ok what goes
> where???. Anyone know what I do next ?
> thanks in anticipation!!
> Mark
>