Design and function
TIG welding
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099-000109-EW501
23.08.2018
5.3.15 activArc
The EWM activArc process, thanks to the highly dynamic controller system, ensures that the power sup-
plied 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.
EXIT
ENTER
4s
Figure 5-43
Parameter setting
The activArc parameter (control) can be adjusted specifically for the welding task (panel thick-
ness)
> see 5.3.17 chapter
.
5.3.16 Simultaneous welding on both sides, synchronisation types
This function is important, if two power sources are used to simultaneously weld on both sides, as is so-
metimes required for welding thick aluminium materials in the PF position. This ensures that, with alter-
nating currents, the positive and negative pole phases are present on both power sources simultaneous-
ly, thus avoiding the arcs negatively influencing each other.
5.3.16.1 Synchronisation via mains voltage (50Hz / 60Hz)
This application relates to two types of synchronisation:
• Synchronisation between a Tetrix series machine and a competitor machine.
• Synchronisation between two Tetrix series machines.
Phase sequences and rotating fields of the supply voltages must be identical for both welding
machines.
If this is not the case, the energy input into the weld pool will be negatively affected.
Use the "Phase sequence changeover“ rotary switch to correct the phase difference in steps of
60° (0°, 60°, 120°, 180°, 240° and 300°).
An optimum phase correction will directly achieve better welding results.
Figure 5-44
