Design and function
Transport and installation
099-004968-EW501
13.09.2021
45
5.1.11.6 Interval
Figure 5-17
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.
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.
