Non-Latched Mode - EWM Tetrix 451 AC/DC AW FW Operating Instructions Manual

5.5.4.2

Non-latched mode

1st cycle (current)
•
Press torch trigger 2 (BRT 2), the gas pre-flow time elapses.
•
HF ignition pulses jump from the tungsten electrode to the workpiece. The arc ignites.
•
Welding current flows and immediately assumes the set ignition current AMP%
(search arc at minimum setting). HF switches off.
2nd cycle (current)
•
Release BRT 2.
•
The welding current ramps up to the main current AMP in the selected up-slope time.
1st cycle (wire)
•
Press torch trigger 1 (BRT 1).
Wire electrode is advanced.
2nd cycle (wire)
•
Release BRT 1.
Wire electrode advance stops.
3rd cycle (current)
•
Press BRT 2.
•
The main current ramps down to the end-crater current I
4th cycle (current)
•
Release BRT 2. Arc extinguishes.
•
Shielding gas continues to flow for the selected gas post-flow time.
Ending the welding process without down-slope time and end-crater current:
•
Tap BRT 2 (tapping function).
Shielding gas continues to flow for the selected gas post-flow time.
Tapping function: Swiftly tap the torch trigger to change the function. The set torch mode determines the
operating mode.
099-000115-EW501
20.11.2017
Configuring the welding machine for mechanical arc fusion welding
Figure 5-15
(AMP%) in the selected down-slope time.
end
Design and function
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