Miller S-74 MPa Plus Manuale d'uso - Pagina 29
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6-12. Operational Terms
The following is a list of terms and their definitions as they apply to this wire feeder:
General Terms:
Cold Wire Jog
Sequence
Weld Program
MIG
Pulsed MIG
Synergic
Non- Synergic
STD
Trigger Hold
Spot
Arc Length
Dual Schedule
Preflow
Postflow
Start
Profile Pulse
Feeding wire without contactor or gas valve being energized.
A portion of the weld program, such as preflow, run-in, start, weld, crater, burnback, and postflow.
A group of sequences that make up a weld cycle.
CV weld process with individual settings of voltage and wire feed speed.
CC weld process with factory taught data using peak and background current, pulse width and
pulses per second. Adaptive pulse control methods modulate one or more of the taught data parame-
ters to regulate or maintain a fixed arc length.
Refers to the system's ability to match the power setting to the set wire feed speed using a single
knob control. In synergic Pulsed MIG, the pulse parameters are automatically increased or de-
creased to match the power output to the set wire feed speed.
Refers to independent control of wire feed speed and power output. In non-synergic mode, increas-
ing or decreasing the set wire feed speed requires corresponding adjustment of the arc length or volt-
age setting.
Basic trigger function, weld sequence starts when the trigger is pressed and ends when the trigger is
released.
Trigger function allowing the operator to weld without continuously pressing the gun trigger. In Trig-
ger Hold mode, momentarily press the gun trigger until an arc is established, and welding will contin-
ue until the gun trigger is momentarily pressed again.
Trigger function that automatically shuts the weld off after a set amount of time. The weld will end
when the set time has expired or the trigger has been released, which ever occurs first. The spot time
is reset when the trigger is released.
Refers to physical distance between wire electrode and molten puddle. Term also used to represent
adjustments in the Pulsed MIG weld process.
Allows selecting a pair of weld parameter settings that can be used together.
The amount of time that the shielding gas will flow after the trigger is pressed and before the welding
arc will be allowed to be active.
The amount of time that the shielding gas will flow after the arc has been shut off.
Provides voltage/arc length, wire feed speed and time values for modified arc start.
Profile Pulse optimizes aluminum weld bead appearance by producing welds with consistently
spaced ripple patterns, similar to GTAW.
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