THC not functioning properly < resolved >
Posted: Sat Mar 02, 2024 7:28 pm
Hello all - please help
The THC on my new acorn build is not doing what it should be doing. the THC will dive or rise randomly, even if the voltage is incorrect, almost seems like it is going in the wrong direction. when it should be going up a little, it goes down, and vice versa.
I was cutting some 3/16 material, and 3/4 of the cut cuts great, and for some reason, in a few spots (material is not warped, not flat, but not warped), the torch will go +1/2" from the material and doesn't come back down. the target volts are 135 I believe and in this case, it's reading 150-160 but doesn't decrease in height.
In another instance, I was cutting some 14ga material, and all of the small stuff came out fine, keeping 130-135 volts like I wanted it to. But as soon as it begins in the border (longer sections) I can watch the voltage stay at 135 then the z starts plunging and the voltage drops to 102 before the torch breakaway/float is activated. begins the cut at .060 as it should then drops down to .007 mid-way through the cut where the material is slightly higher.
When it does fail due to the "torch break away" the program just freezes, it doesn't give me the option to raise the z and resume the cut. It did in the beginning, but not anymore. It forces me to cycle the reset button multiple times to clear the issue and let me raise the Z. Very Strange as well.
In the link below is a short clip and some pictures of the end of failed cuts showing this. (I know it's ugly, just trying things out on scrap.)
https://share.icloud.com/photos/020G4SH ... hscErZQpgA
This is telling me that the machine needs to go up, not down, and vice versa for the thicker material as it began the cut in the higher spot. Is there a setting somewhere? Everything is wired correctly as far as I can tell and it passed all of the com tests along with doing the calibration at least 30 times today.
See the attached wiring diagram that I followed and my most recent report. I have a PrimeWeld Cut60 using the Hypertherm torch and consumables. So, I used a bit of both wiring diagrams since I needed my ohmic touch-off in conjunction with my float switch.
Any help is appreciated, I am falling very far behind on some work and need to get this thing dialed in before making the long cuts that I need to do.
The THC on my new acorn build is not doing what it should be doing. the THC will dive or rise randomly, even if the voltage is incorrect, almost seems like it is going in the wrong direction. when it should be going up a little, it goes down, and vice versa.
I was cutting some 3/16 material, and 3/4 of the cut cuts great, and for some reason, in a few spots (material is not warped, not flat, but not warped), the torch will go +1/2" from the material and doesn't come back down. the target volts are 135 I believe and in this case, it's reading 150-160 but doesn't decrease in height.
In another instance, I was cutting some 14ga material, and all of the small stuff came out fine, keeping 130-135 volts like I wanted it to. But as soon as it begins in the border (longer sections) I can watch the voltage stay at 135 then the z starts plunging and the voltage drops to 102 before the torch breakaway/float is activated. begins the cut at .060 as it should then drops down to .007 mid-way through the cut where the material is slightly higher.
When it does fail due to the "torch break away" the program just freezes, it doesn't give me the option to raise the z and resume the cut. It did in the beginning, but not anymore. It forces me to cycle the reset button multiple times to clear the issue and let me raise the Z. Very Strange as well.
In the link below is a short clip and some pictures of the end of failed cuts showing this. (I know it's ugly, just trying things out on scrap.)
https://share.icloud.com/photos/020G4SH ... hscErZQpgA
This is telling me that the machine needs to go up, not down, and vice versa for the thicker material as it began the cut in the higher spot. Is there a setting somewhere? Everything is wired correctly as far as I can tell and it passed all of the com tests along with doing the calibration at least 30 times today.
See the attached wiring diagram that I followed and my most recent report. I have a PrimeWeld Cut60 using the Hypertherm torch and consumables. So, I used a bit of both wiring diagrams since I needed my ohmic touch-off in conjunction with my float switch.
Any help is appreciated, I am falling very far behind on some work and need to get this thing dialed in before making the long cuts that I need to do.