Kemppi MasterTig 335ACDC Operating Manual page 68

[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 para-
meters are preset by the user.
[Slight upslope]
This is a function that automatically creates a slight upslope to prevent electrode wearing caused by sudden current rises with high
welding currents. This function has an effect only when the welding current is 100 A or more.
[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 joining thin sheets with low heat input.
[Tail arc]
Welding function that allows using a brief low current period at the end of the weld. This reduces welding defects caused by end
cratering. The parameters are preset by the user. The value zero means the function is off.
[TIG]
Manual welding process that typically uses a non-consumable tungsten electrode, a separate filler material, and an inert shielding
gas to protect the weld area from oxidation and contamination during the welding process. The use of a filler material is not always
mandatory in TIG welding.
[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.
[Trigger logic 4T]
Trigger operation mode of a welding torch. When you press the trigger down in 4T mode, shielding gas starts to flow but the arc
won't ignite until you release the trigger. To stop welding you press the trigger down again and then release it to extinguish the arc.
[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 spe-
cial trigger functions, such as Minilog.
[Upslope]
Welding function that determines the time, during which the welding current gradually increases to desired welding current level at
the start of the weld. The value for the Upslope time is preset by the user. The value zero means the function is off.
[Weld Assist]
A wizard-like utility for easy selection of welding parameters. The utility walks the user step-by-step through the selection of required
parameters, presenting the selections in an easily understandable way for a non-technical user. Available in MTP35X control panel
in MasterTig product family.
[VRD (voltage reduction device)]
A safety device used in welding equipment to reduce the open-circuit voltage to maintain below a certain voltage value. This
reduces the risk of electric shock particularly in dangerous environments, such as closed or damp spaces. VRD may also be required
by law in certain countries or regions.
© Kemppi
MasterTig 235ACDC, 325DC, 335ACDC
68/73
Operating manual - EN
1920900 / 1921