Explanation Of Functions - ESAB Robust Feed PRO Instruction Manual

6 CONTROL PANEL
6.3

Explanation of functions

Open the door to access the 2-stroke/4-stroke, the solid/cored wire, the creep start and the
crater fill functions, as well as the knob for setting of the gas flow rate (optional).
Gas purging
Gas purging is used when measuring the gas flow, or to flush any air or moisture
from the gas hoses before welding starts. Gas purging takes place for as long as
the button is held depressed and takes place without voltage or wire feed
starting.
Wire inching
Wire inching is used when feeding wire without applying a welding voltage. The
wire is fed as long as the button is depressed.
Wire feed speed
This function sets the required feed speed of the filler wire. The selected wire
feed speed is shown on the display and the text "m/min" or "inch/min" provided
next to the display shows the unit that is in use.
2-stroke
With 2-stroke gas, pre-flow starts when the welding torch trigger switch is
pressed. The welding process then starts. Releasing the trigger switch stops
welding entirely and starts gas post-flow.
4-stroke
With 4-stroke, the gas pre-flow starts when the welding torch trigger switch is
pressed. The wire feed starts when the switch is released. The welding process
continues until the switch is pressed again. The wire feed then stops and
welding is suspended. The gas post-flow starts when the switch is released.
Wire selection – Cored wire
When cored wire is selected, a constant burnback time is automatically used
when the trigger is released to adapt to welding with cored wire.
Wire selection – Solid wire
When solid wire is selected, Short Circuit Termination (SCT) behavior is
automatically used when the trigger is released to adapt to welding with solid
wire.
SCT is a way to stop the welding with some small short circuits to reduce the
end crater and oxidation. It also gives the advantage of a good start
performance with solid wire.
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