Design and function
MMA welding
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099-005546-EW501
7.12.2020
5.3.2 Welding task selection
• Select MMA JOB 128
> see 11.1 chapter
.
You can only change the JOB number when no welding current is flowing.
3 s
Figure 5-25
5.3.3 Arcforce
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.
Figure 5-26
Display
Setting/selection
Arcforce correction
• Increase value > harder arc
• Decrease value > softer arc
5.3.4 Hotstart
The function hot start ensures a secure igniting of the arc and a sufficient heating to the still cold parent
metal at the beginning of the welding process. The ignition takes place here with increased current (hot
start current) over a certain time (hot start time).
A = Hot start current
B = Hot start time
C = Main current
I =
Current
t =
Time
Figure 5-27
