Used these stepper motors for speed control so I used them in combination with some cheap drivers and a manual pulse generator. After several hours trying to get it to work (on a customer site) I gave up and ordered another pulse generator. Then there was the same problem, the motors didn't move. I decided to check the motor windings with a multimeter and it turned out that the wiring diagram card that came with the motors was incorrectly marked. After identifying the coils, I got it working for a few minutes.
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