Wiring a Nema 17 Controller

I have this Nema 17 controller and I’m just wiring it up now. It has some confusing documentation.

The wires are Red, Green, Black and Blue.

The motor diagram is labeled A, B, C and D.

The controller diagram is labeled A- A+ B- B+.

Anybody know what the standards are for labeling?

Electrical for Marauder CNC (steppers, controllers, power supplies)


I think I found a pretty good solution for this one.

3 Nema17 Stepper Motor 68 oz-in+3 axis board CNC kit: 70.00+43.00 shipping China= 113.00

CNC STEPPER MOTOR POWER SUPPLY 24vdc 6.5 Amps: 27+10 shipping USA = 37.00

Total: 150.00