Can't get THC to work properly

dave_mech

Dave_mech
In our shop we have a Plasma cutter fitted with a MASSO G3-2042 controller, v2 core, v3.48 software. We're trying to install a Proma THC 150, and while the tests suggest it's properly wired, at the moment of cutting it doesn't work as intended.

Upon turnig the controller on, and putting the THC on test mode, things seem fine as the simulated voltage variation traslates to the adecuate up and down movements of the torch. However, after loading any code, something breaks down and this test mode no longer works: it seems to work on the THC, but on the DRO, in the box that notifies the torch status (up, down, in-postion) stays "in-position", only very brifly showing that it receved an up or down instruction, that at much moves the torch by 0.0001 mm. And when executing a code, the status box shows up and down instructions for several seconds, but the Z value is unnafected, and the torch doesn't move in this direction.

We assume the THC is properly wired, since we have checked it several times and it conforms to both the MASSSO documentation and the THC manual, plus how it manages to test correctly before loading a G code. But we're at a loss about what's preventing it to perform as it whould when running a program. In the meantime we're wasting time leveling the sheets we have to cut, so feedback would be very much appreciated.

Here's the code we're using to test the THC with a simple cut:
 

Attachments

  • TEST2.nc
    192 bytes · Views: 34

Ross

Ross
Hi Dave, i had a look at your G-code and their are lots to change.

G0 should be G00


No pause for piece. cut height is missing as well.

X300 is missing so you won't have any movement.

Have a look at the code i have produced with SheetCam, "300mm line"

From Ross.

N0020 (Post processor: MASSO Plasma (with THC and Scribe) Ross Woolley - G04 in milliseconds.scpost)
N0030 (Date: 01/12/2020)
N0040 G21 (Units: Metric)
N0050 F1
N0060 G53 G90 G40
N0070 M666 (---THC Off---)
N0080 (Part: 300mm)
N0090 (Operation: Inside Offset, 0, T3: Plasma 3mm 1810mm/min 40amp)
N0100 (THC 110, 40amp 1.1tip)
N0110 G00 X0.0000 Y0.0000
N0120 (---Take Z reference---)
N0130 G38.2 Z -200 F1100.0
N0140 G92 Z0.0
N0150 G00 Z0.0000
N0160 G92 Z0.0
N0170 G00 Z3.0000
N0180 M03 (---Torch On---)
N0190 G04 P200.0
N0200 (---Go to cutting height---)
N0210 Z1.5000
N0220 G01 F1200.0
N0230 M667 F130 (---THC On---)
N0240 X300.0000 F1810.0
N0250 M05 (---Torch Off---)
N0260 M666 (---THC Off---)
N0270 G00 Z45.0000
N0280 X0.0000 Z145.0000
N0290 M05 M30 (---End of program---)
 

Attachments

  • 300mm.tap
    833 bytes · Views: 33

lilow

Lilow
@dave_mech.

Why does the code direct you to Planet CNC ?

As I have Planet CNC installed.

G0 or G00 are acceptable to all CNC applications.

Maybe follow Ross's rule here.

There is a more simple way for a post processor code to work with Masso.

Everyone seems to use a post processor, when looking at what has been put up.

If you have a CAM processor, just a few characters to include or swap around.

Cheers
 
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