EWM alpha Q Progress drive 4D EF Operating Instructions Manual page 56

Design and function
MIG/MAG welding
Special, non-latched with superpulse
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
•
Slope on main program P
•
Start the super pulse function beginning with main program P
The welding parameters change at the specified times between main program P
main program P
Step 2
•
Release torch trigger
•
Super pulse function is ended.
•
Slope to end program P
•
WF motor stops.
•
Arc is extinguished after the preselected wire burn-back time expires.
•
Gas post-flow time elapses.
56
for the time t ).
start
.
A
.
B
for the time t
END end
Figure 5-25
:
A
.
and the reduced
A
099-005459-EW501
17.12.2015