Welding Task Selection; Welding Current Polarity Reversal (Polarity Reversal); Selection And Adjustment - EWM Tetrix 451 AC/DC AW FW Operating Instructions Manual

Polarity depends on the instructions from the electrode manufacturer given on the electrode
packaging.
•
Insert cable plug of the electrode holder into either the "+" or "-" welding current connection socket and
lock by turning to the right.
•
Insert cable plug of the workpiece lead into either the "+" or "-" welding current connection socket and
lock by turning to the right.
•
Fit yellow protective cap onto G¼" connecting nipple.
5.8.2

Welding task selection

The following welding task selection is an example of use. In general, the selection process always has
the same sequence. Signal lights (LED) will show the selected combination.
5.9

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.
5.9.1

Selection and adjustment

Display
099-000115-EW501
20.11.2017
EXIT
4s
Setting/selection
Negative welding current polarity during the ignition phase
Positive welding current polarity during the ignition phase
MMA AC welding
Design and function
Welding current polarity reversal (polarity reversal)
Figure 5-59
Figure 5-60
77