Kemppi MasterTig 235ACDC GM Operating Manual page 71

S
Search arc
Welding function that allows using a brief low current period at the start of the weld. This enables precise
start of welding. The parameters are preset by the user.
Slight upslope
This is a function that automatically creates a slight upslope to prevent electrode wearing caused by sud-
den current rises with high welding currents. This function has an effect only when the welding current is
100 A or more.
Soft start
Welding function that uses lower welding current at the start of the weld. After the Soft start period the
current rises to normal welding current level. The values for Soft start current level and its duration are
preset manually. Soft start is used to soften the start period of welding especially with steels.
Spot welding
TIG welding function, which automatically produces a weld of predefined duration. Parameters are preset
by the user. This function is used for attaching two pieces of materials with tack welds, for example join-
ing thin sheets with low heat input.
Startup level
The point of welding current where the upslope begins.
T
Tail arc
Welding function that allows using a brief low current period at the end of the weld. This reduces weld-
ing defects caused by end cratering. The parameters are preset by the user. The value zero means the func-
tion is off.
TIG
Manual welding process that typically uses a non-consumable tungsten electrode, a separate filler mater-
ial, and an inert shielding gas to protect the weld area from oxidation and contamination during the weld-
ing process. The use of a filler material is not always mandatory in TIG welding.
TIG antifreeze
A function which automatically decreases the welding current significantly when electrode is touching
the workpiece. Can be used for example to avoid unwanted dilution from electrode to welded metal.
Trigger logic
Welding torches have two alternative operation modes: 2T and 4T. They differ in the way how the trigger
operates. In 2T mode you hold the trigger down while welding, whereas in 4T mode you press and
release the trigger to start or to stop welding and to use special trigger functions, such as Minilog.
Trigger logic 2T
Trigger operation mode of a welding torch. When you press the trigger down in 2T mode, the shielding
gas starts to flow and the arc ignites. Hold down the trigger while welding and release it when you want
to stop welding.
© Kemppi
MasterTig 235ACDC, 325DC, 335ACDC
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Operating manual - EN
1920900 / 1939