Design and function
MMA welding
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5.2.2
Welding task selection
?
Figure 5-8
5.2.2.1 Arcforce (welding characteristics)
During the welding process, arcforce prevents the electrode sticking in the weld pool with increases in
current. This makes it easier to weld large-drop melting electrode types at low current strengths with a
short arc in particular.
Electrode type allocation
Item
Electrode type
a)
R
rutile
b)
RB
rutile basic
c)
B/RC
basic and rutile/cellulose
d)
C
cellulose
Figure 5-9
The electrode characteristics you can select at the machine control are guiding values. Each characteris-
tic can be optimised according to electrode type and the related welding properties
> see 5.7 chapter
.
5.2.2.2 Welding current polarity reversal (polarity reversal)
The user can use the welding current polarity changeover switch
> see 4 chapter
to electronically re-
verse the welding current polarity of the welding current sockets. If different electrode types are used, for
which different polarities are prescribed by the manufacturer, the welding cables do not need to be re-
plugged. The selected switch position indicates the selected polarity (+/ -).
If switching is to be effected by a remote control (PWS), the switch at the power source must be switched
to position
.
