OM-220979 Page 17
SECTION 6
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OPERATION
6-1. Operational Terms
The following is a list of terms and their definitions as they apply to the interface unit in the wire feeder:
General Terms:
AccuCurve
CV Pulse process using a pulse waveform with modified curves at particular locations within the wa-
veform. Has a distinguished change in arc characteristics. Front panel display is ACCU
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CURV.
Accu-pulse
Pulse process utilizing constant current ramps with constant voltage control of peaks and
backgrounds. Adaptive response is controlled by peak and minimum current levels. Benefits are
shorter arc lengths, better puddle control, more tolerant of tip-to-work variation, less audible noise, no
arc wandering, allows weld to fill in at toes increasing travel speed and deposition, and more tolerant
to poor fit up and gaps.
Accuspeed (Optional)
CV Pulse process designed for high travel speeds. Typically used in Robotic applications. Arc is de-
signed to be tight and fast. Front panel display is ACCU
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SPED.
Adjust
Control knob used to change or set parameters and functions.
Amps
Indicates average amperage while welding and 3 seconds hold value at end of weld.
Arc Adjust
Term used to represent arc length adjustments in pulse programs. Increasing Arc Adjust increases
the actual arc length. Likewise, decreasing arc adjust shortens arc length. Arc Adjust is replaced by
volts in MIG programs.
Arc Control
Allows setting of inductance in MIG mode. In pulse and Accu-pulse mode, this adjustment changes
the arc cone by adjusting the preprogrammed factory pulse data. In RMD (optional), this control will
affect the in much the same way as inductance.
Arc Length
Distance from end of wire electrode to workpiece.
Auto Thread
Method of jogging wire without holding jog or trigger switch. Pressing Jog and Retract simultaneously
will automatically feed wire. Default setting is 192 at a feed rate of 700 ipm (these values can be
changed using a PDA with File Management/WaveWriter software). Pressing jog, purge, or trigger
switch will terminate the auto-threading feature.
Crater
Allows setting of voltage/arc adjust, wire feed rate, and time value for arc ends.
DS (Dual Schedule)
Dual Schedule allows selecting a pair of programs that can be used together.
Feeder Set Up
Allow selection of Sequence and trigger functions.
Gas Type
Selection of shielding gas being used in application.
Inductance
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.
MIG
CV weld process with individual settings of voltage and wire speed.
Postflow
Setting a time value for gas flow after arc end.
Preflow
Setting a time value for gas flow prior to arc start.
Process
A selection made for MIG, Pulse, Accu-pulse, and RMD (optional).
Process Set Up
Selection procedure for entering program.
Program
Eight active slots for selection of various processes, wire type, and parameters.
Program Load
Enters selected program information into program slot.
Pulse
Conventional pulse program using peak, background, pulse width, frequency, and peak voltage as
factory taught data. Adaptive method is controlled by frequency adjustment.
RMD (optional)
RMD refers to Regulated Metal Deposition. A precisely controlled short-circuit transfer. Benefits of
RMD are well suited to thin materials, improves gap filling and spatter reduction. Provides less heat
input into workpiece, minimizes distortion and allows use of larger diameter wire on thin gauge
materials.
Sequence
Selecting Sequence will allow setting of preflow, start, crater, and postflow times and parameters.
Start
Provides voltage/arc adjust, wire feed rate, and time value for modified arc starts (which is only
adjustable with the optional PDA with File Management/WaveWriter software).
TDS (Trigger Dual Schedule)
TDS allows the operator to select between a pair of weld programs by using the gun trigger. In TDS
mode, momentarily pressing the gun trigger allows the operator to cycle between a pair of preselected
weld programs.
TH (Trigger Hold)
Trigger Hold allows the operator to feed wire without continuously pressing the gun trigger. In trigger
hold mode, momentarily press gun trigger, and wire will feed until gun trigger is momentarily pressed
again.
