MasterTig 235ACDC, 325DC, 335ACDC, 425DC
Operating manual - EN
6.7 Welding processes and features
MasterTig 235, 325, 335 and 425
2
2T downslope cut
This is a function that allows the user to end the current downslope ramp with a quick press of the torch
switch.
A
AC Balance
Function to adjust the positive and negative current cycles in AC TIG welding. Low percentage means that, on
average, the welding current is more on the negative side, and high percentage that, on average, the welding
current is more on the positive side.
AC Frequency
Function to change the frequency of the alternating current in AC TIG welding. This setting adjusts the num-
ber of cycles per second. Used for changing the frequency of the welding current to best match the welder's
preference and application.
AC phase swap current
Changes the welding current point where crossing the zero begins. Affects only AC TIG.
AC TIG
Alternating current TIG welding process, where the polarity of the electrode alternates rapidly between pos-
itive and negative. Used especially in aluminum welding.
AC Waveform
Function to change the wave form of the alternating current in AC TIG welding. Three options are available:
sine, square and Optima. The wave form affects the shape of weld bead, penetration of the weld and the noise
of the welding process. Select the one that suits the application.
Arc break
Determines the point where the arc is extinguished in relation to the arc length in MMA welding. The purpose
is to optimize the welding termination for each electrode type to prevent the arc from being accidentally
extinguished during welding and to avoid burn marks to the weld piece when the welding is stopped.
Arc force
Adjusts short circuit dynamics (roughness) of MMA welding by changing, for example, current levels.
Arc time
Tells how long the welding arc has been on.
Auto pulse
TIG welding process, where the welding current alternates between two current levels: base current and pulse
current. Only welding current needs to be adjusted and pulse parameters are preset automatically. Used for
optimizing the arc characteristics for desired welding applications.
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