THC post, macros??? Help!!!

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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

I'm starting to think the problem may be with the PrimeWeld Cut 60.

I hooked up a stand alone voltage divider paying careful attention to the polarity, *Double checked voltage coming out of divider and checked polarity, All good showing 2.4 VDC.

Connected to THC fired and the THC went black. #$%$%!

THC is fried. :Sad :Sad :Sad

I'm wondering if the Primeweld doesn't spike on start?

Languire systems dropped the cut 60 from their compatible units due to problems.

see below.


langmuir-daniel
CrossFire PRO
Jun '21
Regretfully, we have decided to remove the Primeweld Cut60 machines from our list of compatible plasma cutters: http://www.langmuirsystems.com/plasma-cutters. The Primeweld units have become a popular choice among our user base, offering good performance and power at a very attractive price.

We have been hearing reports of FireControl freezing for quite a long time when used with these plasma cutters. We decided to do a thorough analysis of our past customer services tickets and have found that effectively all verified instances of interference have coincided with the use of the CUT60. While we cannot tell for certain, our best guess is that about 1/4 of customers that are using the CUT60 with our machines experience some type of interference problems. Normal remedies such as physical distance, installation of chokes, and use of a USB isolator have been shown to have only varying success.

As a manufacturer our goal from the beginning has always been to get people cutting in the most cost effective way forward. The CUT60 has played a role in that gateway due to its accessible price tag. However, we can no longer in good faith recommend these cutters with our machine from this point onward. For those that already own a CUT60 we will continue to do our best to support you as always. Thank you.
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

Update:
Vender (CNC4PC) suspects I got a defective THC and is sending a new one.

I think the clincher was the fact that two multimeters, one digital, one analog showed voltages coming out the 1/50 divided pins around 2 volts = or - a half.
THC display was reading the voltage in the upper 200's and on several occasions I saw above 500. :Wow

so, hopefully the new unit will solve my problems.

A shout out to Arturo Duncan at CNC4PC and Gene at PrimeWeld. Both have been very helpful and supportive! Good people! :Yay :Yay :Yay
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

Did the new THC work? I'm having the same issues.
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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

Yes, working perfectly now. I've got the THC 2 from CNC4PC. Highly recommend!
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

I have been trying to figure out similar issues you had, CNC4PC is in the middle of updating their website and the manuals, macros, postprocessors haven't been uploaded yet. Would you happen to have them saved?
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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

Are you using Mach 3? If so, I should be able to help you out.
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

I have both mach 3 and 4. cnc works without thc or the omic probe. testing the thc in test mode works, lights flash up and down. when i try to cut thc reads 122V but z axis does not move up or down.
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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

You might have noise issues (electrical). How old and what version is your THC?
PS, I added an aftermarket (CNC4PC) voltage divider and several ferrites. Not sure what fixed it but it's near 100% now.

What brand and model plasma cutter are you using?

I'm using the PrimeWeld Cut 60.
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

Primeweld cut 60
C25xp bob cnc4pc bought in February
Thc-1 cnc4pc bought in march
Pts=1 cnc4pc bought in February

Everything test (thc in test mode) good. Lights flash on board, no z movement. I'm thinking it's just a configuration issue either on the ESS or in mach.
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Tristar500
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Re: THC post, macros??? Help!!!

Post by Tristar500 »

Are you using SheetCam? The post I have is for sheetCam.
50X50 plasma w/ pneumatic drill- own design
Mach3,4 SheetCam, CorelDRAW 2020
Homebuilt 3 axis mill
Homebuilt 5 axis mill
PrimeWeld cut 60 Plasma
Hypertherm 350
Miller Symchrowave 250 DX
Several mig welders


He who is without oil shall throw the first rod
Compressions 8.7:1
Havoc fab
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Joined: Sat Jan 25, 2025 11:14 pm

Re: THC post, macros??? Help!!!

Post by Havoc fab »

Yes,
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

The THC sends signal to the c25xp board, input pin 11,12,13 leds light up as designed. no movement on the z-axis. no lights on the pins associated with the z-axis.
Havoc fab
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Re: THC post, macros??? Help!!!

Post by Havoc fab »

when i run a cut in mach4 (sheetcam Mach4 post) z axis moves up and hits limit switch everytime I start. Max height is set at .75
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