Functional characteristics
MIG/MAG welding
Item No.: 099-004838-PRA01
31
5.2.3.4
Special, non-latched
t
t
t
I
1.
2.
P
A
P
END
P
START
Figure 5-7
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
)
• Slope to main program P
A
.
Step 2
• Release torch trigger
• Slope to end program P
END
for the time t
end
.
• WF motor stops.
• Arc is extinguished after the preselected wire burn-back time expires.
• Gas post-flow time elapses.
