Design and function
MIG/MAG welding
54
099-004833-EW501
22.04.2013
Special, latched with superpulse
Figure 5-21
Step 1
• Press and hold torch trigger
• Shielding gas is expelled (gas pre-flows)
• Wire feed motor runs at “creep speed”.
• Arc ignites after
the wire electrode makes contact with the workpiece, welding current is flowing (start
program P
START
for the time t
start
).
Step 2
• Release torch trigger
• Slope on main program P
A
.
• Start the super pulse function beginning with main program P
A
:
The welding parameters change at the specified times between main program P
A
and the reduced
main program P
B
.
Step 3
• Press the torch trigger.
• Super pulse function is ended.
• Slope in the end program P
END
for the time t
end
.
Step 4
• Release torch trigger
• WF motor stops.
• Arc is extinguished after the preselected wire burn-back time expires.
• Gas post-flow time elapses.
5.10.6.2 MIG/MAG automatic cut-out
NOTE
The welding machine ends the ignition process or the welding process with an
• ignition fault (no welding current flows within 5 s after the start signal)
• arc interruption (arc is intrerupted for longer than 5 s)
t
t
t
I
1.
2.
3.
4.
P
A
P
B
P
END
P
START
