[federicken]

Hello Everyone this is my first post.
I have received from Aliexpress my 800w Spindle with the respective PSU PWM controller with 4.7 k pot (https://www.aliexpress.com/item/1005001551850219.html the one i have is similar to this). Spindle is DC 110V rated. I want to control this with MACH3 breakout red card.

I cant find any trustable info on how to wire the card to the controller with the purpose of controlling the spindle with MACH3 Breakout card (bit sensor one; aka red pcb);

Additionally: What does the pin exciter does?

Thanks in advance.

[CitizenOfDreams]

The short answer is no, you cannot control this PSU with a breakout card. It is cheap for a reason.

The "exciter" output goes to the excitation winding (for special motors where that winding has its own leads).