If your motors are buzzing when you try to jog, you probably have the phases fighting each other. Try swapping (with the power off!) the leads that go to the _B and B terminals on your driver.
As for connecting the center taps, I assume these are 6-wire steppers. If they are, then the documentation from Mechatronics is correct. Do not connect them to anything. Just snip the tinned or bare copper leads off the end, then insulate them and tape them to the rest of the bundle of wires. Center taps on 6-wire motors are used only with unipolar drivers, and the Mechatronics is a bipolar driver, so they are not needed.
8-wire steppers are more complex. If that's what you've got, reply and we'll talk about your options. |