Let the fun begin !!! ???

[JAZZCNC]

Ok well looking at the manual again then Gary is correct and you do need to supply the Bob with 10V for speed control, which is poor IMO but not a problem.

Regards the Relays I think you may need to change SW1 to Off and work in Enable Mode not Charge pump mode for the Relays to work correctly.
The manual isn't very clear on this but that's what I think it's trying to say.? . . . . Give it a try and see what happens.

The way the Spindle should Start & Stop is with issuing M3 for CW, M4 for CCW and M5 to stop from G-code or MDI. Or with on screen button or F5.