Functional characteristics
TIG welding
Item No.: 099-002046-EWM01
25
5.1.4.3
TIG latched operation
NOTE
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 5-5
1st cycle
• Press torch trigger 1, the gas pre-flow time elapses.
• HF ignition pulses jump from the electrode to the workpiece, the arc ignites.
• Welding current flows and immediately assumes the ignition current value set (search arc at minimum
setting). HF is switched off.
2nd cycle
• Release torch trigger 1.
• The welding current increases in the set up-slope time to the main current AMP.
Switching from main current AMP to secondary current AMP%:
• Press torch trigger 2 or
• Tap torch trigger 1 (for tapping mode, see also chapter “Tapping function”)
3rd cycle
• Press torch trigger 1.
• The main current drops with the set down-slope time to the end-crater current I
end
(minimum current).
4th cycle
• Release torch trigger 1, the arc extinguishes.
• The gas post-flow time set begins.
Immediate termination of the welding procedure without down-slope and end-crater current:
• Briefly press the 1st torch trigger (3rd cycle and 4th cycle).
The current drops to zero and the gas post-flow time begins.
*
Tapping function:
Pressing the torch trigger briefly to change a function, e.g. changing over from main to secondary
current.
The function is used in torch modes 1-6 (factory setting). The function is deactivated in torch
modes 11-16 (for more in-depth information, see Torch mode setting chapter).
