Wiring the Hypertherm interface cable

Along with that, is plasmac still the best way to configure the thcad-10 and a floating head or is it outdated now?

I apologize. I have searched the forms and I have found several. Some, yes with wiring diagrams. Since I’m not the most versed in electrical wiring I just like to ensure that I understand as best as I can. With that in mind I didn’t understand the wiring diagram of the thcad-10 I had, so I made another one to double check I did things right. Like I said, I’m trying to understand pin 14 and how it can show the Mesa card anything if it constantly has a live wire going to it.

one of the reason I ask a lot of questions is because I get a lot of conflicting answers. So I just like to be sure I understand correctly. Again I apologize 

You mean #14 in the Hypertherm connector? Why would you think its a live wire? The description says ”Normally open dry contact”, this mean that there are normally open relay contacts between #12/#14. You can think it as a switch where there is no connection between #12/#14 as the relay is not energized.
When the relay activates (this happens when current is flowing on the work lead) the contacts close and you have a conductive path from #12–>#14.

I apologize if I came across any type of we. I do get a bit frustrated when it seems like I can’t understand something. Though I should do more research before simply asking a question.

I will wire it up the way it’s shown in the picture, and I understand that that’s the correct wiring method. Thank you all for that.

I understand about it being a relay and how that is like a switch. I’m just confused as to why V- from the 24v power supply is suppose to go to pin 14 as opposed to pin 14 only going to the board.

Maybe I’m understanding this section of the board incorrectly though. I assumed that the relay inside the plasma would connect, causing pin 14 to be energized, then the board would get that input. I’m just confused as to why we connect the the V- from the 24v to pin 14 as well.

Okay. I think I may have been looking at it wrong then. Though I believe I understand better now. I will not wire that up to -v. I understand that it’s a switch, it’s the fact that it’s just a switch and two wires are coming from pin 14 that confuses me. I don’t understand why this ground wire is going from the board to the plasma.
 

the green one with the resistor.

to me, that seems like it will mess with the circuit