Miller XR-ALUMAFEED Manuel du propriétaire - Page 25
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6-2. Operational Terms
The following is a list of terms and their definitions as they apply to the wire feeder:
General Terms:
MIG
Pulsed MIG
Synergic
Non- Synergic
2T
Trigger Hold
4T
Spot
Arc Length
Dual Schedule
Preflow
Postflow
Start
Crater
CV weld process with individual settings of voltage and wire 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 parameters 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 decreased
to match the power output to the set wire speed.
Refers to independent control of wirefeed speed and power output. In non−synergic mode, increasing
or decreasing the set wirefeed speed requires corresponding adjustment of the arc length or voltage
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 Trigger
Hold mode, momentarily press the gun trigger until an arc is established, and welding will continue
until the gun trigger is momentarily pressed again.
Trigger function enabling selection between Start, Weld and Crater parameters using the gun trigger.
Start and Crater are automatically active and cannot be turned off in 4T mode. In 4T mode, press and
hold the gun trigger to begin welding at the Start parameter settings. Release the gun trigger, and
welding will continue at the Weld parameter settings. Press and hold the gun trigger again, and weld-
ing continues at the Crater parameter settings. The Crater sequence ends when the gun trigger is
released and the Crater parameter times out.
If the gun trigger is pressed again before the Crater parameter times out, the Crater time is reset and
welding continues at the Weld parameter settings until the gun trigger is released. When the trigger is
released, welding continues at the Crater parameter settings until the Crater parameter times out.
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.
Provides voltage/arc length, wire feed speed and time values for modified arc end.
OM-239 210 Page 21