Functional characteristics
TIG welding
Item No.: 099-004877-EWM01
37
5.3.6.2
TIG non-latched operation
When the
foot-operated remote control
RTF is connected, the machine switches automatically to
non-latched operation.
The up- and down-slopes are switched off.
Figure 5-6
Step 1:
• Press and hold torch trigger 1.
• The 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 set for the ignition current I
start
.
• HF is switched off.
• The welding current increases in the adjusted up-slope time to the main current AMP.
Step 2:
• Release torch trigger 1.
• The main current drops in the set down-slope time to the end-crater current I
end
(minimum current).
If the 1st torch trigger is pressed during the down-slope time, the welding current returns to the
main current AMP set.
• The main current reaches the end-crater current I
end
, the arc extinguishes.
• The set gas post-flow time elapses.
