Lincoln Electric PIPEFAB CE, Руководство оператора

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PIPEFAB™ WELDING SYSTEM OPERATION
B-29
TRIGGER SELECTION
2-STEP TRIGGER
2-Step Trigger controls the welding sequence in direct response to the trigger. When the gun trigger is
pulled, the welding system (power source and wire feeder) cycles through the arc star
� ng sequence and
into the main welding parameters. The welding system will con � nue to weld as long as the gun trigger is
ac � vated. Once the trigger is released, the welding system cycles through the arc ending steps.
Example 1: 2-Step Trigger: Simple opera � on.
The simplest trigger opera � on occurs with a 2-Step trigger and Start and Crater set to OFF.
For this sequence,
PREFLOW: Shielding gas begins to fl ow immediately when the gun trigger is pulled.
RUN-IN: A �e r pre fl ow � me expires, the power source regulates to the welding output and wire is
advanced towards the work piece at the Run-In WFS. If an arc is not established within
2.0 seconds, the wire feed speed will jump to the welding wire feed speed.
WELD: The power source output and the wire feed speed con � nue at the weld se � ngs for as
long as the trigger is pulled.
POSTFLOW: As soon as the trigger is released, the power source output and the wire feed speed are
turned OFF. Shielding gas con � nues un � l the post fl ow � mer expires.
FIGURE B.24