Got 1 cut done today and went to the next job,
Torch fired at Pierce point moved a bit, then shuts off.
Went through all the consumables. Fine
It’s been cutting flawlessly for almost a year.
Ran THC Health test. Failed showing 7.1V.
Long list of troubleshooting… been working for a year so I’m pretty sure it’s wired right!
Guess the troubleshooting flow begins.
I made sure the Z axis is clean and all adjusted … still no go
RESULTS:
----- THC health check report 02/25/2021 ------
RESTING VOLTAGE TESTS
[16:54:22] average voltage = 0.00V
LIVE VOLTAGE TESTS
[16:54:48] average values: [6.88V] [7.06V] [7.66V]
Check the THC cables and box for wear, loose connectors, metal dust buildup, or any obvious or not so obvious signs of damage or moisture.
How are you wired to your plasma cutter for the THC? If a CNC plug, verify all the pins are in good shape and making their connections properly between the plug and receptacle; if hardwired make sure splices/connections are tight and nothing is shorting in the case.
Gonna dive in later today.
It’s the OG Razorcut45 from the first run of the OG 2x2 CrossFire first offering.
It’s Hard wired inside and there is a post on here that Langmuir links to I did of the proper wiring and pictures I posted during the wiring…
It’s been running flawlessly for almost a year until yesterday…
as is usually how it goes when something finally does go wrong.
Gonna open it up and check later this afternoon.
Thank you for the post.
Of course when you promised a project by the EOW is when it breaks down!
@PWCNC Take an air hose and blow off the Z-axis screw and lead nut, clean with alcohol and blow it off again. I fought this same issue for months (after it had cut great with THC for a while) and the root cause seemed to be the grime bridging continuity from the IHS switch to the lead screw. Also look at the orientation of the IHS contact screw, mine was oriented so that the IHS contact dropped into the slot of the screw head turning the screw 90 degrees helped with the consistency of IHS. (Although it did impact the initial cut height slightly)
I was seeing the same symptoms, voltage being displayed when it should be at zero.
ok NTook the cutter apart today.
Ohm’d all the cables & bananas connectors to the module. Ohmd the ground cable.
Everything was
Cleaned the ground cable. All my wiring from a year ago was still perfectly fine. Reassembled
Everything. I also checked the air regulator, no leaks and I bumped up the pressure from 70-80 psi. Been running at 70 for years but I have a new torch coming that needs 80 anyway.
Also cleaned out the ground lug connector…
My Z axis is always clean as I clean everything after every days cut… but I took your advice and cleaned it all off again.
Ran the THC health check test and eveything passed this time. Cut a few handles out to check function and they went fine so I loaded on a new sheet and cut the 28” monogram out…
And it cut flawlessly!
20.6 ? I think
It’s the test button next to the THC
On left of the screen
It asks you to move the Z 1” above your slat or material. Then it fired the torch and measures the voltage. As soon as you see it fire you tap the torch on button and fire control shuts it off it does it three times and it gives you the test result…
Yesterday I was only at like 7.1 V today it was measuring 98.1 V
Got 1 cut done today and went to the next job,
what should it read?