Help get Spindle PWM and on/off with chinese 1.5kw spindle

[StephenCook]

I have one of those VFD’s
I wrote a lot about them in another thread.

VFD and Air cooled spindle

This is how I have my Gecko board hooked up. [image] Now for you here is how you would hook up the X-carve output to the VFD. [image] Because There is no octocoupler on the X-carve you will have to make sure that there will not be any reverse current that will stress out the X-Controller input. From the schematic it is tied directly to the pin. I would hook up a circuit that isolates the X-controller and the VFD. Here is a link to a single channel isolation circuit. If you do use this o…

In that thread I have 2 diagrams that show you how to hook up to them.