Design and function
TIG welding
099-005407-EW501
8.2.2022
69
5.5.6 Operating modes (functional sequences)
5.5.6.1 Explanation of signs and functions
Symbol Meaning
Press torch trigger
Release torch trigger
Tap torch trigger (press briefly and release)
Shielding gas flowing
I
Welding output
Gas pre-flows
Gas post-flows
Non-latched
Special, non-latched
Latched
Special, latched
t
Time
P
START
Ignition program
P
A
Main program
P
B
Reduced main program
P
END
End program
tS1
Slope duration from PSTART to PA
5.5.6.2 Automatic cut-out
Once the fault periods have elapsed, the automatic cut-out stops the welding process when it has been
triggered by one of two states:
• During ignition
5 s after the start of the welding process, no welding current flows (ignition error).
• During welding
The arc is interrupted for more than 5 s (arc interruption).