Re: [CAD_CAM_EDM_DRO] Yet another NEMA 42 roadblock

The Bridgeport manual says: 1-6, 2-8, 3-5, 4-7. So, you have the right
polarity. I don't know why Superior says differently, unless, the above
numbering sequence is strictly for Bridgeport machines. Oh, also,the
manual says that motor direction can be reversed by interchanging terminals
#1 & #3.

RayHex

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> From: washcomp <jeff@...>
>
> I'm still fighting the battle of my unmarked NEMA 42's
>
> I was all set to hook them up and I got a connection diagram from
> Superior Electric on their 8 connection stepper motors to make sure I
> got the polarity of the windings right. They show windings from
> terminals 1-6, 2-3, 4-8 and 5-7
>
> I have continuity between:
>
> 1-6, 2-8, 4-7, 3-5
>
> I know that proper polarity is important and specific windings are
> important, but don't know how to proceed from here to identify the
> terminals without opening the stepper (which I understand is a no-no).