Live voltage is too high

[mtthwlehman]

How would I know that it is 20:1?

[mtthwlehman]

Do you know of any resources for this?

[mechanic416]

I looked at the pictures you posted of the CPC port plug and want to know why you have jumpers on it?

[mtthwlehman]

I am not quite sure what you’re referring to? The two white wires?

[mechanic416]

No the red and black wires.

[mtthwlehman]

It was the cable provided by Langmuir that I used to make into a cpc plug.

@ntkfabworks

Now hooking these up can be done a few ways. One would be to cut the connectors that Langmuir has on the torch wiring plug off and put the new pins on those wires. I chose to buy some 4-wire control cable from McMaster. The part number is 9936K12, I got a 20’ piece. Put pins on the #1 and #2 wires and hooked them to Langmuir’s wiring(so now its like 30’ long, but my machine doesn’t have to be right at the table, small shop problems). The other ends of those wires get the same pins aforementioned crimped on and go in the #3 and #4 ports in the cpc plug. Doesn’t matter which one, they simply complete a short(just as the trigger does), to initiate/extinguish the arc.

[mechanic416]

Did you put the red and black wires on that plug?

[mtthwlehman]

Yes, I did.

[mechanic416]

Well they shouldn’t be their. You should have 4 wires coming from the CPC plug to the Langmuir box. 2 are for the trigger and 2 a positive and a negative for the THC.

[mtthwlehman]

Seems I bit off more than I could chew.

[nicaDd]

looking at the same pic, i don’t see anything else other than the 2 wires for torch on/off (white wires) and the THC (Red/black).

[mtthwlehman]

I have two white wires, one red, and one black coming off of the CPC. That is the torch firing wire supplied by langmuir. I cut them off and put pin connectors on them.

[mechanic416]

Ok, I see it now I though they were jumper wires. I will have to down load the manual and check out the wiring as there is something not wired right.

[mtthwlehman]

I am green when it comes to a lot of the electronics side of this, so I really appreciate you looking into it.

[nicaDd]

are yo using the white wires for torch on/off or the red/black one? although it doesn’t really matter since they both have the same end on on the other side, it does matter for polarity reasons for THC.

[mtthwlehman]

Red-5
Black-6
Two white wires 3 & 4

[mtthwlehman]

I don’t understand how I have ben able to cut out a few parts prior to all of this happening.

[mechanic416]

#3 and #4 are the trigger wires. Now I have to find out what 2 pins are the + and - for the THC.

[TinWhisperer]

this is a link to the hypertherm 45xp service manual so it’s the entire 150 page operating manual plus the 200 Page service manual section
https://www.hypertherm.com/Download?fileId=HYP174752&zip=False
Here’s a link to every manual and service bulletin for this machine.

Plasma, waterjet and laser cutting systems from Hypertherm

Page 108 in the service manual has a breakdown of that port
And the voltage divider dip switch information is the very next page

[mechanic416]

[TinWhisperer] bet me to it #5 is - and #6 is + and should read about 18 volts