Functional characteristics
TIG welding
Item No.: 099-004877-EWM01
47
5.3.9
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.
TIG activArc combined with pulse variant "TIG automated pulses" or "kHz pulses (metallurgic pulses)"
improves the positive properties of the process further depending on the task.
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).
These parameters have been modified for the welding current level at the factory.
• The "activArc" process must be selected first (activArc signal light is on permanently).
Operating
element
Action Result
Display
5 sec.
Select activArc parameter value
x x
Select activArc parameter value
Press until
LED flashes
Set parameter value
• Increase parameter value (A/V)
• Decrease parameter value (A/V)
