Dean Hedin wrote: > My next problem is that I have discovered that the steppers on this machine > are 5 phase. > Granted, These are very precise German made stepper motors but I don't think > I > will be able to find a low cost controller to drive them. Unless somebody > out there knows > of an economical solution that I have overlooked. > Look on eBay for "super Vexta" drivers. Not all of them can do step/direction, which I think they call "two pulse", vs. what they call "one pulse", which is CW and CCW step lines. Actually, it is pretty easy to convert for this, or maybe EMC can now generate CW/CCW step pulses. If so, then you can use any super vexta drive. These should be small motors, and the small drives go quite cheap on eBay. > It's a shame really, these motors have .72/.36 degree resolution indicated > on them and I've > read elsewhere that 5 phase steppers run very smooth. Yes, I have a larger 5-phase motor and matching drive, they run like a top, and while audible, are quite smooth.
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