OM-253 906 Page 47
SECTION 6 − OPERATION
6-1. Operational Terms
The following is a list of terms and their definitions as they apply to this interface unit:
General Terms:
98/2 Ox Gas mixture of 98% Argon and 2% O
2
.
Amps Indicates average amperage while welding and holds the value for 10 seconds at end of weld.
Arc Control The adjustment of arc cone width and arc characteristics in the RMD and Pulse processes. Increasing Arc
Control value increases the arc cone width and subsequently effects the arc length (end of electrode to
workpiece). See Section 6-9 items 1 and 4 for adjusting Arc Control value.
Arc Length Distance from end of wire electrode to workpiece. This term is also used to represent arc length adjustments in
RMD and Pulse processes. Increasing Arc Length increases the actual arc length; likewise, decreasing Arc
Length shortens actual arc length. See Section 6-9 items 2 and 3 for adjusting arc length value.
C2 Gas mixture of 98% Argon and 2% CO
2.
C20 Gas mixture of mainly Argon and 20% CO
2.
C20-C25 Gas mixture of mainly Argon and 25% CO
2.
C8-C15 Gas mixture of mainly Argon and 8-15% CO
2.
Dig Adjustable setting for stick welding. Increasing the value provides additional amperage during low voltage (short
arc length) conditions while welding. Helps avoid “sticking” the electrodes or snubbing out the arc when a short
arc length is used.
Dual Schedule A two position switch which attaches to (or incorporated in) the gun handle that can be used to change weld
parameters during the MIG welding processes. The gun trigger operates as a standard trigger. Dual Schedule is
always activated. See Section 6-2 item F 8 for setup procedure.
EXX10 Stick welding electrode type. EXXX1 or EXXX2 are typically used on this setting (cellulosic electrode).
EXX18 Stick welding electrode type. EXXX3 through EXXX8, or stainless are typically used on this setting (low
hydrogen type electrode).
FCAW (Flux Cored Arc
Welding)
Flux cored arc welding is a continuous electrode that is fed into the arc and depends on shielding gas from
either an external source or is generated from the decomposition of gas forming ingredients contained in the
electrode’s core. Only dual shielded wire is recommended for the PipeWorx 400. A gas mixture or wire diameter
selection is not required. See wire manufacturer for the recommended gas mixture. The 0.9 to 1.6 mm wire
sizes can be used in the process.
Gas Type Selection of shielding gas being used in an application: C8-C15 (Argon/8-15% CO
2
), C20 (Argon/20% CO
2
),
C25 (Argon/25% CO
2
), 100% CO
2,
C2 (Argon/2% CO
2
), 98/2 Ox (Argon/2% O
2
), CO
2
(100% CO
2
).
HF TIG starting method. High frequency turns on to help start the arc when output is enabled. High frequency turns
off when arc is started and turns on whenever the arc is broken to help restart the arc. HF start is used for
GTAW process when a non-contact arc start method is required.
Hot Start Adjustable setting for stick welding. Allows for adjustment of the output amperage at the start of a stick weld,
should the start require it. This helps eliminate sticking of the electrode at are start. Increasing the value
increases the start amperage. Decreasing the value, decreases the start amperage.
Inductance Control Allows setting inductance in MIG and FCAW. In short circuit GMAW welding, an increase in inductance will
decrease the number of short circuit transfers per second (provided no other changes are made) and increase
the arc-on time. The increased arc-on time makes the welding puddle more fluid. See Section 6-9 items 1 and 4
for adjusting Inductance Control value.
Jog Method for feeding wire without contactor or gas valve being energized (see Section 6-9, item 9).
Lift-Arc TIG starting method. Touch tungsten electrode to workpiece at weld start point and enable output and shielding
gas with torch trigger, foot control, or hand control (if a control is desired). Hold electrode to workpiece for one to
two seconds, and slowly lift electrode to form the arc. Lift-Arc is used for the GTAW process when HF Start
method is not permitted.
MIG (GMAW) Also referred to as solid wire welding. An arc welding process which joins metals by heating them with an arc.
The arc is between a continuously fed filler metal (consumable) electrode and the workpiece. Externally
supplied gas or gas mixtures provide shielding.
Postflow The time that the shielding gas continues to flow after the arc has been terminated.
Preflow The time that the shielding gas flows prior to arc initiation.
Process A selection made for MIG, Pulse, RMD, Stick, Flux Core (FCAW), or TIG (Lift-Arc or HF starts).
Memory Location Buttons
1-4
By selecting a process such as STICK, TIG, MIG LEFT side of feeder, or MIG right side of feeder there will be
four Memory Locations available for selection providing a total of 16 Memory Locations for a dual feeder. There
will only be 12 Memory Locations available for a single feeder.
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