Design and function
TIG welding
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099-000125-EW501
29.9.2022
5.2.8.2 Non-latched mode
Selection
Figure 5-18
Sequence
Figure 5-19
1st cycle:
• Press torch trigger 1 and hold down.
• Gas pre-flow time
elapses.
• HF ignition pulses jump from the electrode to the workpiece. The arc ignites.
• The welding current flows and immediately assumes the value of the start current
.
• HF switches off.
• The welding current ramps up to the main current
(AMP) in the selected up-slope time
.
If torch trigger 2 is pressed together with torch trigger 1 during the main current phase, the welding cur-
rent decreases to the secondary current
(AMP%) in the set slope time
.
If torch trigger 2 is released, the welding current increases again to the main current AMP in the set slope
time
. The parameters
and
can be set in the Expert menu (TIG)
> see 5.2.9 chapter
.
2nd cycle:
• Release torch trigger 1.
• The main current falls to the end-crater current
(minimum current) in the set down-slope time
.
If the 1st torch trigger is pressed during the down-slope time,
the welding current returns to the set main current AMP
• Main current reaches the end-crater current
; the arc is extinguished.
• Set gas post-flow time
elapses.
When the foot-operated remote control is connected, the machine switches automatically to non-
latched operation. The up- and down-slopes are switched off.
