Functional characteristics
MMA welding
56
099-00T500-EW501
2.9.2022
5.3.5 Welding current polarity reversal (polarity reversal)
This function can be used to reverse the welding current polarity electronically.
For example, when welding with different electrode types for which different polarities are stipulated by
the manufacturer, the welding current polarity can be switched easily on the control.
-
+
~
Figure 5-44
5.3.6 AC welding
5.3.6.1 Automatic AC frequency
Activation takes place in the functional sequence using the parameter frequency . By turning to the left,
the parameter value is reduced until the parameter
(AC frequency automatic) is shown in the display.
The signal light comes on when the function is enabled.
The machine control takes over the regulation or setting of the alternating current frequency depending
on the set main current. The lower the welding current, the higher the frequency and vice versa. This
achieves a concentrated, directionally stable arc when welding currents are low. The load on the tungsten
electrode is minimised when the welding currents are high ensuring a longer service life.
The use of a foot-operated remote control with this function reduces manual intervention by the user
during the welding process to a minimum.
Figure 5-45
