Connection between AXBB-E and plasma torch by relay

[routercnc]

Section 7 of the manual on page 18 says the 24V supply can be anything between 12 and 24V. 12V works fine as long as the connected devices are designed for it. It's what I use without any problems.

One reason the output might not be working is if you are attempting to use output O1. This has it's own purpose and you must use O2 - O8 for relays etc. I made this mistake myself when I first set up my AXBB-E. The manual does say so but not as loudly as it might.

O1 is the charge pump and I believe it just draws that pin down to ground when it gets a signal from the PC. If it looses connection that pin is not active so it is designed to be used for system safety.