IHS and Cutting inconsistency

Not sure if it will blow out . That’s similar to the way my the plasma did showed higher like that until cutting. I don’t think that is the problem.

I will post a picture of part and tap file later. At least you can eliminate your cam.

I have seen some using other cams. I was under the impression post processor was for sheetcam and 360 only.

With that said if it was in your g codes it would do it in the same place every time.

I,ve had inconsistency issues that go away when i cut a single part at a time. I’m leaning toward the cause being duty cycle on the razorweld being fairly wimpy. If i cut only 3 or 4 parts then wait 10 minutes before cutting the next 3 or 4, my results are far more consistent. Dont know what else it could be.

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2 in test square.tap (1009 Bytes)

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if it works i cam out your part to try also.
you may need to adjust ipm it is programed at 60 ipm.

Just ran the test .tap given by Phillipw. Same results:

Slight difference though - on ProNest LT23, when I get a pierce failure it continues the program until it realizes there is no voltage on the THC. So on the shorter cuts (under .5 sec), it never realizes anything is wrong and continues to the next step. With Phillipw’s .tap, the system immediately recognized that the arc was extinguished and gave me the THC voltage alarm.

RE: ProNest LT 23 plunge rate. There is nothing in the manual that specifically indicates ‘Plunge rate’. I found a ‘Cutting techniques’ excel file, and I think this is where the plunge rate is determined:
FR%(50), Dist(.25), FR%(75), Dist(.15), FR%(100)

Base feedrate on my cuts is 100, so I am guessing that my plunge is either 50, 75 or 100 ipm depending on the distance of the lead in.

At this point, I am pretty certain that the issue is not with the CAM (since it was replicated with Phillipw’s .tap.

Given that I have tried multiple air configurations and different consumables, I think there must be something wrong with the torch itself.

Is there a chance maybe the torch mount bolts are to tight?

I went back looked at code you posted earlier. Pronest set you plunge rate at 100

Anything is a possibility. I had to readjust the torch mount to fix my IHS problem. Curious though - how would the torch mount bolt tightness be the issue here?

Not letting blow back work properly.

Will torch stay on when fire in fire control? Have you done thc test?

I do the THC test every time I switch out consumables. Tests have all been good.

Just tested the torch fire in fire control. Stays on, so we are good there.

I will try to loosen the torch mounting bolts and see if that helps

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That’s not the problem then

Don’t believe it is the torch either. Have you called ls I think they have a number just for xr users

Called Razorweld? Negative. Have been trying to exhaust all possibilities through the forum first

Have you tried different version of fire control. Seems to me it is software or THC related. Have you turned thc off and tried?

Looks like i was on 21.1.4. Just updated to 21.1.5. Doing windows updates too to make sure that is covered.

I believe the THC doesn’t kick in until 0.25 secs, so I don’t think that is the issue

I would try to turn off with it on it looks for voltage. Just to eliminate it. Some people had trouble with some versions. Can’t remember which ones

Pronest has it deactivated automatically for the smaller profile cuts.

turn off in fire control that may be the problem even disabled it reads voltage up top green THC drop down disconnect it.

Can make a difference