Functional characteristics
MIG/MAG functional sequences / operating modes
Item No.: 099-004934-EWM01
49
5.2.5
Interval
Figure 5-12
1. Start
• Press and hold torch trigger.
• Shielding gas is expelled (gas pre-flows).
• Wire-feed motor runs at "creep-start speed".
• Arc ignites after the wire electrode makes contact with the workpiece; welding current flows.
• Changeover to the pre-selected wire speed after the set ignition time (tZn).
• The wire feed stops after the pulse time expires.
• Arc is extinguished after the wire burn-back time elapses.
• The process is repeated after the pause time elapses.
2. End
• Release torch trigger.
• Wire feed stops.
• Arc is extinguished after the wire burn-back time elapses.
• Gas post-flow time elapses.
NOTE
When the torch trigger is released, the welding process is also interrupted even before
the spot time elapses.
With fast tacking (time between two welding process under approx. 1.5 seconds) the gas
pre-flow, the creep process and also the ignition time (tZn) are not required.
5.2.6
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 3 s).
Содержание WEGA 351
Страница 7: ...Contents Notes on the use of these operating instructions Item No 099 004934 EWM01 7...
Страница 20: ...Machine description WEGA 351 401 451K 20 Item No 099 004934 EWM01 4 1 2 Rear view Figure 4 2...
Страница 54: ...Commissioning Welding torch and workpiece line connection 54 Item No 099 004934 EWM01 Figure 6 2...
