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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 starting sequence and into the main welding
parameters. The welding system will continue to weld as long as the gun trigger is activated. Once the trigger is
released, the welding system cycles through the arc ending steps.
Example 1: 2-Step Trigger: Simple operation
The simplest trigger operation occurs with a 2-Step trigger and Start and Crater set to OFF.
For this sequence,
PREFLOW
:
Shielding gas begins to flow immediately when the gun trigger is pulled.
RUN-IN:
After preflow time 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 continue at the weld settings 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 continues until the post flow timer expires.
