Functional characteristics
MIG/MAG welding
Item No.: 099-005073-EWM01
29
5.2.5.2
Non-latched mode
Figure 5-5
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 flows.
• Change over to pre-selected wire speed (main program P
A
).
Step 2
• Release torch trigger.
• WF motor stops.
• Arc is extinguished after the preselected wire burn-back time expires.
• Gas post-flow time elapses.
5.2.5.3
Non-latched operation with superpulse
t
I
t
t
1.
2.
P
A
P
B
Figure 5-6
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 flows.
• 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 2
• Release torch trigger.
• Super pulse function is ended.
• WF motor stops.
• Arc is extinguished after the preselected wire burn-back time expires.
• Gas post-flow time elapses.
