Machine torch raises

CrossFire ® PRO
1

I am using a hypertherm 45xp, crossfire PRO, and post process with Sheetcam. I upload my program in FireControl and the torch goes to start the cut, touches down on the metal but then goes about 1" into the air and fires the arc.

I have the ground directly on the metal, and also tried to connect to the slats. I can not figure out what the issue is.

There is slack in the torch, and everything seems to be plugged in correctly. Disconnected and reconnected.

Running FireControl 21.1.5, updated firmware for THC and machine. Both running 1.3 and 1.1.

Any suggestions?

2

@manmademetalwork
Welcome to the Forum

Can you copy and paste some of the gcode your were running as text here ?

3

image
image761×204 8.32 KB

Not sure how to grab the text from in FireControl… here are a few screenshots

4

image
image756×160 5.24 KB

5

open the actual gcode file and copy/past it here.

1 Like
6

Here is the first 50. I never get past around 25 because I stop it to save consumables.

(v1.6-sc)
G90 G94
G17
G20 (Units: Inches)
H0
G0 X14.508 Y2.0452

G92 Z0.
G38.2 Z-5.0 F100.0
G38.4 Z0.5 F20.0
G92 Z0.0
G0 Z0.02 (IHS Backlash)
G92 Z0.0
G0 Z0.15 (Pierce Height)
M3
G4 P0.5
G1 Z0.08 F150.0 (Cut Height)
H1
G1 F240.0
G3 X14.3754 Y1.922 I-0.0047 J-0.1279
G1 X14.3751 Y1.9131
G2 X14.3194 Y1.8988 I-0.03 J0.0011
G1 X14.139 Y2.1986
G1 X13.8137 Y2.7429
G1 X13.6453 Y3.027
G2 X13.6711 Y3.0723 I0.0258 J0.0153
G1 X13.9093
G1 Y3.141
G1 X13.4007
G1 Y3.0719
G1 X13.4274 Y3.0715
G2 X13.4299 Y3.0714 I-0.0004 J-0.03
G1 X13.4808 Y3.0664
G2 X13.4872 Y3.0651 I-0.0029 J-0.0299
G1 X13.5287 Y3.0516
G2 X13.5376 Y3.0469 I-0.0093 J-0.0285
G1 X13.5612 Y3.0289
G2 X13.5685 Y3.0209 I-0.0182 J-0.0238
G1 X13.6022 Y2.9666
G1 X13.791 Y2.6584
G1 X13.8851 Y2.5019
G1 X13.9734 Y2.3531
G1 X14.059 Y2.2071
G1 X14.2331 Y1.9039
G1 X14.3278 Y1.7373
G2 X14.3315 Y1.7187 I-0.0261 J-0.0148
G2 X14.0945 Y1.1163 I-1.3056 J0.1659
G2 X14.0918 Y1.1131 I-0.0244 J0.0175
G1 X13.9816 Y0.9975

7

I don’t see anything weird in the code

how is your travel on your z axis?
How is the torch mounted?

Is the z axis moving smoothly?

are you using smart voltage?

8

Z axis raises and lowers manually just fine
Machine torch mounted
Z axis moves smoothly
Using smart voltage

9

post a pic of the torch mounted. could be it’s too high in the mount and the z axis carriage is prematurely activating the IHS switch before the torch finishes the touch down sequence even though it may look like it did.

10

Torch Height Picture
Torch Height Picture1100×1438 177 KB

11

i would loosen the 2 torch mount rings and let the torch bottom out on the material. it’ll give you enough room on either end up and down plus it’ll be mounted on the body of the torch instead of the head which is right which that bottom screw on the torch is.

this also assure you that there is enough slack in the z axis carriage.

1 Like
12

Adjusted the torch and same issue. Fires too far from material.

Torch Height V2
Torch Height V21158×1432 119 KB

13

Also observe the IHS light in FireControl (bottom middle left ) make sure it is not activating at a incorrect time.

What is the voltage while running before it rises?

14

IHS light turns on as soon as it touches material then lifts too high and fires, and at one point turns on very quickly while firing.

Voltage looked like it is at 117 before I shut it off pretty quickly to not blow through consumables.

15

jiggle, rise the torch up and down without firing it and see if that IHS light comes on without touching the material.

Check the IHS circuit from the Z axis all the way back to the Electronic Enclosure.

1 Like
16

It does, when going down.

17

Check the IHS circuit from the Z axis all the way back to the Electronic Enclosure.

Something is screwy with the IHS switch or circuit feeding it.

Lube the IHS switch maybe?

1 Like
18

Can’t seem to find any issues along the way. Should I take a look inside the enclosure?

19

check the ring connector going to the cooper plate in the z axis. is it loose ?

Seems like it is in the z axis if is happened when it was moving.

The IHS light should only trigger when it touches off the material

1 Like
20

Not seeing anything out of the usual. I am not familiar with the part you are describing though.