Design and function
TIG welding
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099-000143-BOC01
16.11.2009
5.8.7
TIG activArc welding
The EWM activArc process, thanks to the highly dynamic controller system, ensures that the power
supplied is kept virtually constant in the event of changes in the distance between the welding torch and
the weld pool, e.g. during manual welding. Voltage losses as a result of a shortening of the distance
between the torch and molten pool are compensated by a current rise (ampere per volt - A/V), and vice
versa. This helps prevents the tungsten electrode sticking in the molten pool and the tungsten inclusions
are reduced. This is particularly useful in tacking and in spot welding.
Operating
element
Action Result
Display
x x
Select activArc parameter
Press until
LED flashes
• Switch parameter on
• Switch parameter off
Parameter setting
The activArc parameter (control) can be adjusted specifically for the welding task (panel thickness).
• Preset with: TIG activArc welding
• Enter the menu (ENTER) Keep the runtime parameter button pressed for 3 s.
• Leave the menu (EXIT) Keep the runtime parameter button pressed for 3 s.
Figure 5-15
Display Setting/selection
activArc parameter
Setting: 0 to 100 (factory setting 50)
