I am only using the spindle relay function on the board to switch a 2 wire signal (24v) to tell the VFD to start the motor so very light duty and effectively the VFD is acting as a 3 ph., 1.5 Kw relay here .
Along with its options for spindle delay , soft start , et al

This KK01 relay started to play up on its 5v USB supply , so I had to add a 5 v PSU.
Previous BOB also from CNC4you, also fell over . so I cant use its 0-10V facility .

Is there a simple (I need simple ) spindle control relay capable of switching the signal voltage to start the spindle motor , then provide a 0-10V variable voltage to speed up and slow down the spindle as required .

If it comes down to it I can stand up and hit the start button and twiddle the pot to increase / lower the revs, but as I normally have my lazy backside on my bar stool, it would be nice to be able to control it from the keyboard