Unusual Stepper Motor wiring

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gailen

Joined: 10 Jun 2009
Posts: 3

10 Jun 2009 20:17 stepper motor wiring

I bought some surplus stepper motors and I have been trying to figure out a way to interface to them.

Its a Warner Electric Stepping motor model SM-096-0030-AG

It is 10DC with 1.8 degrees per step
It uses 6 wires.
I measured 2.5 ohms between 1,2 4,5 and 3,6
I measured opens with any other combination.

From reading, I thought the 6 wire ones we supposed to have logical 2 poles with A-, A, A+ and B-, B, B+ hookups. Example, A- and A+ should have twice the resistance between A,A- or A,A+ as it is 2 windings.

I am unable to find material on the wiring for this model or any other that seems to have its similiar properties. Am I looking at it wrong or someone have an idea how this is supposed to work?

Thanks

FvM

Joined: 22 Jan 2008
Posts: 5161
Helped: 767
Location: Bochum, Germany

11 Jun 2009 10:35 stepper motor wires

It sounds like a three-phase stepper configuration. Unusual, but possible though. You may want to evaluate the phase orientation oft the individual windings by fixing a hand to the motor shaft and applying a current to the windings sequentially.

venix

Joined: 20 Mar 2008
Posts: 86
Helped: 9

15 Jun 2009 9:41 step motor wiring

Hello!

Look at this:

Unusual Stepper Motor wiring

Best regards!
Venix

FvM

Joined: 22 Jan 2008
Posts: 5161
Helped: 767
Location: Bochum, Germany

15 Jun 2009 14:28 5 phase stepper wiring

You apparently read about 6 wires and ignored the other things said.

gailen

Joined: 10 Jun 2009
Posts: 3

15 Jun 2009 19:37 stepper motor 6 wires

FvM,

Looks like it is 3 phase. Going have to build a more complex driver that can reverse it without a short state. Probably 3 H-Bridge circuits that can handle 3A and use a microcontroller to step through them.

I may just try to get a traditional 4 phase one for later projects as those tend to be more standard.

FvM

Joined: 22 Jan 2008
Posts: 5161
Helped: 767
Location: Bochum, Germany

15 Jun 2009 22:13 sm-096-0030-ag

Yes, you can think of it as a synchronous 3-phase motor and a 3-phase bridge should work with a motor delta or star wiring.

I must confess, I never heard of it before. A german company made 5-phase stepper motors in the past, but they are out of business since long.

gailen

Joined: 10 Jun 2009
Posts: 3

15 Jun 2009 22:38 wiring stepper motors

Yeah I seem to have gotten lucky choosing these as my tutorial to steppers. Unfortunately there aren't any spec sheets that come from surplus part stores, but I am not complaining much as they were only $5 a piece. It will probably be fun to see if I can make a driving circuit for it. Got some of the parts. Just need to reinstall my compiler and IDE for the controller.

I have seen some sites with some small mention of 3 and 5 phase steppers, but no data on them. I am just assuming they have a greater torque capability.