Lincoln Electric PIPEFAB Series Operator's Manual page 55

PIPEFAB™ WELDING SYSTEM OPERATION
DEFINITIONS
BASIC DEFINITIONS
Arc Force – Arc Force adjusts the short circuit current for a so� arc, or for a forceful, driving arc. It helps
to prevent s�cking and shor�ng of organic coated electrodes, par�cularity globular transfer types such
as stainless and low hydrogen. Arc Force is especially effec�ve for root pass on pipe with stainless
electrode and helps to minimize spa�er for certain electrodes and procedures. Only displayed when set
to a non-zero value.
Burnback Time – Adjustable �me delay between turning off the wire feed and turning off the arc.
Burnback helps to prevent wire s�cking to the puddle. The burnback feature will allow current to flow
for a specified �me period at the end of a weld a�er wire feeding has stopped.
Cold Feed – Method for feeding wire without the contactor or gas valve being energized.
Crater Time – Controls the WFS and voltage for a specified �me at the end of the weld a�er the trigger
is released. During the Crater �me, the machine will ramp from the Weld Procedure to the Crater
Procedure.
FCAW – Weld process that uses gas shielded wire.
Gas Purge – Turns on the gas solenoid for as long as the gas purge switch is held.
Gas Type – Shielding gases that can be used: Argon, CO , 98 Ar / 2 CO , 90 Ar / 10 CO , 85 Ar / 15 CO , 80
2 2 2 2
Ar / 20 CO , 75 Ar / 25 CO .
2 2
HF – TIG star�ng method. HF turns on to help start the arc when output is enabled. HF start is used
when a non-contact arc start method is required.
Hot Start – Increases output current during the start of welding, helps ignite the arc quickly and reliably.
Only displayed when set to a non-zero value.
MIG – Weld process that has three different modes: CV, STT, and Pulse.
Pinch – Controls the arc characteris�cs when short-arc welding.
Pos�low – Time that the shielding gas con�nues to flow a�er the arc has been terminated. Only
displayed when set to a non-zero value.
Preflow Time – Adjusts the �me that shielding gas flows before the welding output turns on.
Process – Selec�on of MIG, FCAW, TIG or S�ck.
Run-In – Allows adjus�ng the wire feed speed prior to the arc being established. A low run-in speed
permits smooth arc starts. A�er the arc is established the run-in value is inac�ve and the set wire feed
speed is present. The run-in op�on is available in MIG and FCAW modes.
B-4