Torch not firing on 2nd cut

CrossFire ® PRO
1

I’m new here. Got a Crossfire Pro recently with a Hypertherm 45 cutter. The issue I’m having is with a part that has multiple cuts (as most do). It will make the first cut no problem. Upon starting the 2nd cut, it moves to the proper location, the IHS probes the part, but then the torch doesn’t fire before starting to make its move. I get an error that says something like “torch moved before firing.” The cut is in 10ga mild steel. According to the manual the pierce delay should be .4 seconds and that’s what I’m using. Here’s the program…

(v1.6-af)
(LS Forum community post)
G90 G94
G17
G20
H0

(Torch Setup)
(  MS-10GA-135-STD-45A )
(  45A )

(2D Profile1)
G0 X1.5477 Y9.2958
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.02 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.15 (Pierce Height)
M3
G4 P0.4
G0 Z0.06  (Cut Height)
H1
G1 X1.6467 Y9.1256 F129.
G3 X1.9885 Y9.0352 I0.2161 J0.1257 F64.5
G3 X1.0115 Y10.7148 I-0.4885 J0.8398 F129.
G3 X1.9885 Y9.0352 I0.4885 J-0.8398
G3 X2.0789 Y9.377 I-0.1257 J0.2161
G1 X1.9799 Y9.5472
H0
M5
G0 Z1.

G0 X6. Y3.5246
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.02 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.15 (Pierce Height)
M3
G4 P0.4
G0 Z0.06  (Cut Height)
H1
G1 Y3.7215 F129.
G3 X5.75 Y3.9715 I-0.25 J0. F64.5
G3 Y0.7785 I0. J-1.5965 F129.
G3 Y3.9715 I0. J1.5965
G3 X5.5 Y3.7215 I0. J-0.25
G1 Y3.5246
H0
M5
G0 Z1.

G0 X9.4906 Y9.5953
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.02 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.15 (Pierce Height)
M3
G4 P0.4
G0 Z0.06  (Cut Height)
H1
G1 X9.3756 Y9.4355 F129.
G3 X9.4324 Y9.0866 I0.2029 J-0.1461
G3 X10.5676 Y10.6634 I0.5676 J0.7884
G3 X9.4324 Y9.0866 I-0.5676 J-0.7884
G3 X9.7813 Y9.1434 I0.1461 J0.2029
G1 X9.8964 Y9.3031
H0
M5
G0 Z1.

G0 X11.527 Y8.4396
G92 Z0.
G38.2 Z-5. F100.
G38.4 Z0.5 F20.
G92 Z0.
G0 Z0.02 (IHS Springback + Backlash)
G92 Z0.
G0 Z0.15 (Pierce Height)
M3
G4 P0.4
G0 Z0.06  (Cut Height)
H1
G1 X11.3468 Y8.5187 F129.
G3 X11.0173 Y8.3904 I-0.1005 J-0.2289 F64.5
G1 X7.9506 Y1.4084 F129.
G2 X3.5494 I-2.2006 J0.9666
G1 X0.1005 Y9.2603
G2 X1.5 Y11.4035 I1.3995 J0.6147
G1 X10.
G2 X11.3994 Y9.2603 I0. J-1.5285
G1 X11.0173 Y8.3904
G3 X11.1457 Y8.061 I0.2289 J-0.1005 F64.5
G1 X11.3259 Y7.9818 F129.
H0
M5
G0 Z1.

M5
M30
(PS129)
2

Even for “0.4” delays, if using Fusion, the shortest I run is 0.5

No issues.

3

how long of a cable did you get with your 45 XP? (I’m assuming you got a 45 XP not a 45) the latency matters there’s even a section in the hypertherm discussing it. I believe they came in 25,50 and 75 foot

When I used to run my pro I was able to get it down to .37 seconds of delay for finer stainless work I was doing where I didn’t want a divot on single line geometry. Officially the lowest delay for the Pro is .5 the first Pierce in a sequence is artificially lengthened to this amount that’s why the failure occurs on the second Pierce.

Now that I have an XR can do .1 second delays. The control box has less latency in the circuit compared to the pro.

With the pro I used to add .4 to any book value time.
So for example if my pierce delay in the book was .4 I would add .4( firing time latency) for an ultimate Pierce delay .8sec

4

It is indeed a 45 XP. Sorry for not specifying, didn’t know there was a non XP. Without getting out a tape measure and uncoiling it, I’d say it’s 25’. It’s definitely not longer than that. Possible it could be shorter.

Great info you provided. Is it documented anywhere that this first pierce delay is artificially adjusted to .5 minimum? Odd they’d do that and not tell you.

Should I add .4 to all the values in the book or just any value less than .5?

5

I added them to all values when I ran pro

I’m not sure I could point to an official reference there may be a historic poster topic on the forum from one of the Langmuir representatives talking about it.

6

I would statr with .8 secs and go down form there until it starts to fail consstantly then up to by .05-.1

1 Like
7

From 16 gauge to 3/16" on a 45XP, pierce delay is at 0.5 (using Fusion) and always works for me.

Someone reached out to me recently having the exact warning the author describes.

Told him to up the delay to 0.5 and it fixed the issue. He was trying 0.1 and 0.3 and it always failed to perform the second cut.

1 Like
8

Thanks, will give this a try.