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Author Topic: ARC not OK  (Read 1655 times)

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ARC not OK
« on: May 19, 2013, 02:18:08 PM »
I do not have a ARC ok on the Mach 3 screen or the Texas Micre 301d when I am running.

I was getting a pierce but no movement. The pierce would last until I shut it off on the Mach screen.  I shut off the THC on the Mach screen and I began cutting again. However, I do not get an ARC OK signal at the THC or the ach screen.

The good news is I am cutting as well as ever..

Texas Micro suggested it is the torch (TD A40). ?????? At their suggestion I am going to run the test boards again.

I do have a 2nd issue and will post it separately.  This issue is dealing with my feed speed not changing, on the Mach screen with a new g-code.

Any help will be greatly accepted.

Thanks, Bob 
Only one way to Get-er-Done......Do-er-Right!
Re: ARC not OK
« Reply #1 on: May 21, 2013, 07:42:55 PM »
Put an ohm meter on pins 12 and 14 on your TD automation cable.  That will tell you if it's the plasma.  With a good arc, you should see continuity between pins 12 and 14.