Re: [CAD_CAM_EDM_DRO] Stepper identification for a newbie

Guy: I've never seen those, but I can give you a GUESS (nothing more): Four
wires? They are "bipolar", meaning that the driver-circuitry must deliver
alternately "+" and "-" polarities to the two winding, also alternately.
(The order of march determines which direction it turns).

Get an ohmmeter across the windings. You should have a LOW resistance (one
to ten ohms?) between pairs, but the pairs should NOT be connected (megohms
separate).

It's a long "book" to suggest how you might guess what the voltage/current
for these motors are, but once you have the resistance written down, you
MIGHT find something close in a stepper-catalog (see Superior Electric or
Oriental Motor, etc.). Find one of that (Size-17???) case-size, and same
resistance, and there is probably "close enough" for the voltage/current your
driver must deliver. Driver??? Sorry. I am an OLD troll, and the only
drivers I know about are the ancient "six-wire unipolar" circuits. Duh...

Jan Rowland, Troll