Sieg KX3 spindle controller connexion

hello All,

I recently bought a SIEG KX3 milling machine, The machine is allready equipped with steppermotors and spindle drive but it lacks the controller.

I have attached the wiring diagram that came with the machine.
I do not know how to connect the controller of the spindle. As you can see on the wiring diagram this controller has 4inputs: AVI, GND, START/STOP, F/R.

I would like to control the spindle RPM with a 0-10V signal that comes out of my CPU board, I "guess" I have to connect this 0-10V signal between GND and AVI. Not sure what I have to do with the START/STOP and F/R input, do they have to be connected to GND to be active, or be supplier with +5v or +10v?

Your help is welcome

Attached Files

Sieg Kx3 wiring diagram LR.pdf‎ (162.2 KB)