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The vfd 10v is to give power to a manual 3 pin potentiometer. Then the pot dial adjusts that voltage and sends it back into the avi input via the wiper based on where you position the dial....

Don't need to do that it's set for 10V and ignore what Dazp is saying he's telling you wrong. I will explain in my next post don't anything else until I do as you could damage the VFD or Controller....

Simply connect Fwd to Gnd and it will start. If you want to start/stop it through the controller using UCCNC then use an Output which controls a relay and run a wire from Fwd through a NO contact...

I use DM542T drivers at 36V on a pair of 3NM NEMA23 motors to pull an 800mm wide welded steel gantry with a 2.2KW spindle on it. It's fairly weighty but will rapid at over 10/min with reasonable...

If you find that your max velocity is below what you would like, swap out the 36v for a 48v.
I'd have gone for the DM556:
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Depends on what you want to do and the motor spec. Model number not showing anything so double check you have it right.
What are it's dimensions, that may also give us a clue on it.

Personally, I...

The network card does the crossover automatically. You can use a normal patch lead IF your network card supports this function. We'll at least that's my setup.
I think the network option is called...

I take it you have looked at Dean's website Web site: www.jazzcnc.co.uk