Z axis is going crazy SOLVED TY

I just set up my machine and everything but the z axis and limit switches seem to b working.

The z axis will go up some times and down sometimes when the same command is given through jog. I have tries the onscreen buttons as well as the keyboard commands. either way the response is unpredictable, both other axis are responding corectly. Any Ideas, Please Help

Triple check your connections from the Z motor to the controller.

Thank you I did loose black wire problem solved.

The stepper motor will work as normal with only three wires, but without the 4th directional control is lost => random direction, usually in the direction of least resistance :slight_smile: