Tips on How to Connect stepper motors

Using the internal drivers
The Duet 2 WiFi, Ethernet and Maestro all have 5 on board stepper drivers.

To connect stepper motors to the internal drivers, refer to the wiring diagram at Duet 2 Wiring Diagrams or Duet 2 Maestro Wiring Diagram. The pinout of each stepper motor connector is the same as for other popular 3D printer electronics.

Block Image

Note: it is highly recommended that the stepper motor casings be grounded, especially in belt-driven printers. Otherwise, motion of the belts causes static charge to build up, which eventually arcs over to the windings. If the motors are screwed to a metal frame, grounding the frame is sufficient.

Each hybrid step motor connector has four pins. You must connect the two wires for one phase of the stepper motor between the two pins at one end of the connector, and the wires for the other phase to the two pins at the other end.

Identifying the stepper motor phases
Here are two ways you can pair the stepper motor wires into phases:

Use a multimeter. There should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases.
With the motor wires not connected, spin the spindle between your fingers. Short two of the wires together, then spin the spindle again. If it is much harder to spin than before, those two wires belong to the same phase. Otherwise, try again with a different pair of wires shorted together.

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https://forum.duet3d.com/topic/12798/which-is-better-for-3d-printer-nema-17-or-nema-23



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