The electrode will have a catastrophic failure (a blow out), and there can be possible damage to other
consumables, but catastrophic damage to the torch will not occur.
Automatic ramp-down error protection
For LongLife technology, a controlled stop of the current and gas pressure is necessary for protection of
electrode life for mild steel cut processes. A failure to complete the cut on the workpiece causes most
uncontrolled stops (ramp-down errors).
Failure to complete the cut on the workpiece causes the plasma arc to extend too far and then to snap out
(break) in a ramp-down error, which can quickly decrease consumable life. These are common causes for
a ramp-down error:
■
Incorrect hole lead outs
■
Cutting off the edge of the workpiece
The cutting system can sense a ramp-down error before the arc snaps out (breaks) and can adjust quickly
to do a controlled stop of the current and gas pressure. This type of controlled stop can help very much to
increase electrode life, especially when cut speeds are less than 3,560 mm/min (140 in/min).
Operation
6
245811530Instruction ManualXPR460
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