Mach3 VFD PWM signal...

[Davek0974]

I have done a similar thing at work with an awkward interface for a temperature controller - works well.
It used a 10 channel bargraph chip to take a 0-10v signal and convert to 10 adjustable resistance outputs using 10 miniature relays and 10 trim-pots - the relays were needed to give isolation.

trouble with using Mach it would need multiple outputs to do it directly and thats not so easy.

The bargraph / relay / pot system would work though - it just converts 0-10v variable into 0-10v stepped signals.

I think the lookup table will work for now until a proper fix comes up.

I see we have 15 spindle pulleys - could they be set up to do this?
I'm not sure the ratio does anything when using PWM though.