The attached picture indicates a schematic from Al the Man who did it to help me back in 2012 to connect a Sherline 90VDC motor with a KBIC controller and all went fine at that time.
I have the same Sherline 90VDC motor with the same KBIC controller which now I try to connect for a new Taig lathe I bought. Since for now I just want a simple ON/OFF control I follow the schematic but I don’t connect the white and orange wiring from the motor which are going to the relay. I just connect the red, black, green from the motor to KBIC and the AC power white to L1 and black to the switch inside the KBIC. The motor white and orange are tapped off as per schematic
I also want to control the speed with the knob on the KBIC.
When I turn the KBIC switch to ON I just hear a humming noise and the motor doesn’t turn
What I do wrong?