Hypertherm ArcGlide Torch Height Control, Instruction Manual

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ArcGlide THC Instruction Manual 4-33
MAINteNANCe
error Description Possible Causes Corrective action
21
Nozzle Contact Sense
input did not turn on while
performing an HIS.
Requires the Nozzle
Contact Sense to be set
to on within the plasma
process screen.
The stall force is set to low
and the torch stalled out
before reaching the plate.
A mechanical bind is
preventing the torch
from reaching the plate.
The torch is stalling on
a nonmetallic material or
the plate is not electrically
bonded to the star ground
on the cutting table.
The lifter is not properly
grounded to the cutting
table.
The Plasma Interface
board is not properly
grounded to the cutting
table.
The Ohmic wire has a
loose or open connection
to the torch.
The Ohmic wire is
damaged.
There is a problem with the
torch consumables.
The HPRXD torch body
has an internal open
connection between the
shield cap and Ohmic wire
connection on the back of
the torch.
Perform a test IHS and verify that the torch is
reaching the plate. If the torch is firing in the air:
Increase the Stall Force setting by 1.
Verify that the current limit is not set too low.
Check the lifter motion for smooth motion.
Check the lifter motion for obstructions.
Verify that the lifter is properly grounded. A separate
ground wire between the lifter ground stud should be
present and running to the star ground on the gantry
or cutting table
Verify that the plasma interface board is properly
grounded. A separate ground wire between the
plasma interface ground should be present and
running to the star ground on the cutting table.
Check the Ohmic contact wire for a loose connection
to the torch or to the lifter interface board. Check the
Ohmic contact wire for damage.
Check whether the work piece is not conductive or
has excessive dirt, rust, or oil on the surface.
Check the cutting table slats for excessive damage or
excessive slag build-up.
2