Will only cut one loop at a time

ScottNH · July 16, 2023, 9:27pm

I’m having an issue where the torch fires on the first loop, then moves to the next cut but does not refire. I get an error message that has the usual stuff about pierce delay and voltage. If I hit retry and generate the code to go from there it custs the next one and stops. I can get through the whole cut that way but it’s a pain. What am I missing? CAD/CAM both in Fusion here is the G-code.

(v1.6-af)

(Machine)

( vendor: Langmuir)

( model: Crossfire Pro)

( description: Crossfire Pro Cut 60)

G90 G94

G17

G20

H0

(2D Profile1)

G0 X-0.4137 Y9.712

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X-0.3358 Y9.757 F225.

G3 X-0.6079 I-0.1361 J0. F135.

G3 X-0.3358 I0.1361 J0.

G1 X-0.4137 Y9.802 F225.

H0

M5

G0 Z1.

G0 X0.3422 Y9.786

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X0.2559 Y9.7604 F225.

G3 X0.2543 Y9.7467 I0.0573 J-0.0137 F135.

G3 X0.3722 I0.0589 J0.

G3 X0.2559 Y9.7604 I-0.0589 J0.

G1 X0.3212 Y9.6985 F225.

H0

M5

G0 Z1.

G0 X3.9979 Y9.7016

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X4.0759 Y9.7467 F225.

G3 X3.9615 I-0.0572 J0. F135.

G3 X4.0759 I0.0572 J0.

G1 X3.9979 Y9.7916 F225.

H0

M5

G0 Z1.

G0 X4.7365 Y9.7545

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X4.6988 Y9.6728 F225.

G3 X4.9313 Y9.7467 I0.1045 J0.0739 F135.

G3 X4.6753 I-0.128 J0.

G3 X4.6988 Y9.6728 I0.128 J0.

G1 X4.7884 Y9.681 F225.

H0

M5

G0 Z1.

G0 X4.066 Y2.7774

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X3.9824 Y2.8107 F225.

G3 X3.9599 Y2.7644 I0.0365 J-0.0463 F135.

G3 X4.078 I0.059 J0.

G3 X3.9824 Y2.8107 I-0.059 J0.

G1 X3.9953 Y2.7217 F225.

H0

M5

G0 Z1.

G0 X0.2941 Y2.719

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X0.3714 Y2.765 F225.

G3 X0.2537 Y2.7643 I-0.0589 J-0.0007 F135.

G3 X0.3714 I0.0589 J0.

G1 Y2.765 F225.

G1 X0.2929 Y2.809

H0

M5

G0 Z1.

G0 X-1.0492 Y3.2529

G92 Z0.

G38.2 Z-5. F100.

G38.4 Z0.5 F20.

G92 Z0.

G0 Z0.04 (IHS Springback + Backlash)

G92 Z0.

G0 Z0.15 (Pierce Height)

M3

G4 P0.2

G0 Z0.06 (Cut Height)

H1

G1 X-0.9713 Y3.2979 F225.

G1 Y8.6332

G2 X-0.9443 Y8.6602 I0.027 J0. F135.

G1 X-0.8693 F225.

G3 Y8.6812 I0. J0.0105 F135.

G1 X-1.7638 F225.

G2 X-1.9089 Y8.8263 I0. J0.1451 F135.

G1 Y10.2043 F225.

G2 X-1.7638 Y10.3494 I0.1451 J0. F135.

G1 X-0.1804 F225.

G2 X-0.1534 Y10.3224 I0. J-0.027 F135.

G1 Y10.1724 F225.

G3 X-0.1324 I0.0105 J0. F135.

G1 Y11.4125 F225.

G2 X0.0127 Y11.5576 I0.1451 J0. F135.

G1 X0.601 F225.

G2 X0.7461 Y11.4125 I0. J-0.1451 F135.

G1 Y10.1724 F225.

G3 X0.7671 I0.0105 J0. F135.

G1 Y10.3224 F225.

G2 X0.7941 Y10.3494 I0.027 J0. F135.

G1 X3.5378 F225.

G2 X3.5648 Y10.3224 I0. J-0.027 F135.

G1 Y10.1724 F225.

G3 X3.5858 I0.0105 J0. F135.

G1 Y11.4125 F225.

G2 X3.7309 Y11.5576 I0.1451 J0. F135.

G1 X4.3193 F225.

G2 X4.4644 Y11.4125 I0. J-0.1451 F135.

G1 Y10.1724 F225.

G3 X4.4854 I0.0105 J0. F135.

G1 Y10.3224 F225.

G2 X4.5124 Y10.3494 I0.027 J0. F135.

G1 X6.0957 F225.

G2 X6.2408 Y10.2043 I0. J-0.1451 F135.

G1 Y8.8263 F225.

G2 X6.0957 Y8.6812 I-0.1451 J0. F135.

G1 X5.2012 F225.

G3 Y8.6602 I0. J-0.0105 F135.

G1 X5.2762 F225.

G2 X5.3032 Y8.6332 I0. J-0.027 F135.

G1 Y3.2001 F225.

G2 X5.2762 Y3.1731 I-0.027 J0. F135.

G1 X5.2012 F225.

G3 Y3.1521 I0. J-0.0105 F135.

G1 X6.0094 F225.

G2 X6.1545 Y3.0069 I0. J-0.1451 F135.

G1 Y1.3263 F225.

G2 X6.0094 Y1.1812 I-0.1451 J0. F135.

G1 X4.525 F225.

G2 X4.498 Y1.2082 I0. J0.027 F135.

G1 Y1.3582 F225.

G3 X4.477 I-0.0105 J0. F135.

G1 Y0.1181 F225.

G2 X4.3319 Y-0.027 I-0.1451 J0. F135.

G1 X3.732 F225.

G2 X3.5869 Y0.1181 I0. J0.1451 F135.

G1 Y1.3582 F225.

G3 X3.5659 I-0.0105 J0. F135.

G1 Y1.2082 F225.

G2 X3.5389 Y1.1812 I-0.027 J0. F135.

G1 X0.793 F225.

G2 X0.766 Y1.2082 I0. J0.027 F135.

G1 Y1.3582 F225.

G3 X0.745 I-0.0105 J0. F135.

G1 Y0.1181 F225.

G2 X0.5999 Y-0.027 I-0.1451 J0. F135.

G1 X0. F225.

G2 X-0.1451 Y0.1181 I0. J0.1451 F135.

G1 Y1.3582 F225.

G3 X-0.1661 I-0.0105 J0. F135.

G1 Y1.2082 F225.

G2 X-0.1931 Y1.1812 I-0.027 J0. F135.

G1 X-1.6774 F225.

G2 X-1.8226 Y1.3263 I0. J0.1451 F135.

G1 Y3.0069 F225.

G2 X-1.6774 Y3.1521 I0.1451 J0. F135.

G1 X-0.8693 F225.

G3 Y3.1731 I0. J0.0105 F135.

G1 X-0.9443 F225.

G2 X-0.9713 Y3.2001 I0. J0.027 F135.

G1 Y3.2979 F225.

G1 X-1.0492 Y3.3429

H0

M5

G0 Z1.

M30

(PS225)

ds690 · July 16, 2023, 9:40pm

.2 seconds is a pretty short delay. You should probably up that to at least .4 seconds. The first delay is always artificially longer than the rest in Firecontrol, so the first loop usually works.

It’s also possible that your air solenoid spring is weak and not able to shut off the flow quickly enough to refire during post flow.

ScottNH · July 17, 2023, 2:23am

.2 is the Hypertherm book setting, I did bump it up in FC to no avail. The Plasma cutter is brand new first cut but I did have this happen to me once before with my Primeweld cut 60. I believe it is something in the post processor. I feel pretty confident that if I tried another file it would be fine. I use both sheetcam and fusion for CAM. TY

Madman · July 17, 2023, 3:04am

Hypertherm has a post flow that needs to clear before torch will fire after first cut. For a 25 ft machine torch I increase book settings by .3 to .4. So if book says .2 increase pierce delay to .5 or .6 play with it to see what gives you best performance. Post flow comes into play because hypertherm measure time from arc, firecontrol measures time from signal. If you need a really accurate pierce delay on first cut adjust first pierce in gcode back to book settings

GaltsGarage · July 17, 2023, 3:49am

Every time I’ve had this particular problem I kid you not the work clamp wasn’t hooked up. The pilot blowback arc will usually run long enough to finish a short loop but then stall out on a longer loop. Literally happened to me today, now my first reaction is to check the work clamp. I know this is a pretty basic suggestion but it still happens to me…

ds690 · July 17, 2023, 11:23am

Hypertherm book settings are too short to work reliably in Firecontrol. This is due the the fact that Hypertherm calculates the delay from the time the torch actually fires. Firecontrol calculates the delay based on the time that the signal to fire the torch is given.

Increasing the delay in Firecontrol is just a percentage of the original setting, so even increasing it to 200% only results in a .4 second delay.