I have a chinese Stepper drive DM860H which has a AC power supply from 20-60VAC. How is it possible? my question is is there any AC stepper Motors?
It's a while since I've dealt with servo control. You can have AC Servomotors but only seen DC Stepper Drives.
I recall an ABB system with phase locked AC motors - slave motor phase locked to a master but the slave could not rotate stepwise.