Centroid Acorn Plasma Users Manual Beta CNC12 v4.65 rev6
If using a Float Switch that triggers some distance either before of after the torch tip.
Determine that distance. There are several ways to do this here is the method we use.
Float Switch Offset Distance Measurement Method
1.) Place a thick flat piece of metal on the machine that will NOT move, bend or flex.
2.) Slow Jog the Torch Tip down to touch a piece of paper on the metal.
Shimmy the paper back and forth and find the point in which the torch tip just
touches the piece of paper. Hint: Using Slow Jog once the torch tip gets close
to the metal then switch to “Incremental” “x10” then “x1” to jog the torch tip
right on the paper accurately.
3.) Press “SET Z0” button on the VCP
4.) Now continue to jog into the metal until the Float switch triggers, stop and observe the position of Z on
the DRO. This is the distance that the Z had to move after the torch touched the metal to trigger the Float
Switch. Enter this value in the Wizard Torch Touch off menu for the Float Switch offset distance.
Notes: It is a good idea to verify that the Float Switch is triggering consistently at the same location. For a
Float Switch to work properly it must trigger at the same offset distance consistently so running the test
above several times to verify Float Switch consistency is a good idea.
Once verified by hand now test the automatic touch off cycle with the Torch Touch Off Button on the VCP
Test Run Automatic Touch Off Cycle
1.) Place a thick flat piece of metal on the machine that will NOT move or flex
2.) Jog the Torch to approximately 1” above the metal
3.) Press the “TORCH Touch OFF” VCP button to run the automatic touch off cycle
4.) After the cycle is complete the Torch will retract to the safe height (specified in the profile being used).
Observe the height of the Torch Tip above the metal is it at the safe height? If so continue to next step. If
not, most likely the Float Switch Offset distance is not set correctly.
5.) Verify Torch function with a Test Fire
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