Fronius TransSteel 2200 - 4-Step Mode

4-step mode
I
t
I-1
I-S
I-E
I-2
GPo
I-1
tdown tets
1 2 3 4 5 6 7
tup
4-step mode with intermediate lowering I-2
Intermediate lowering means that the welder uses the torch trigger during the main cur-
rent phase to lower the welding current to the specified reduced current I-2.
Welding with 4-step mode:
1
Place the tungsten electrode onto the workpiece and then pull the torch trigger back
and hold => shielding gas flows
2
Raise the tungsten electrode => start of welding with starting current I-S
3
Release torch trigger => welding with main current I-1
4
Push forward and hold the torch trigger => activation of intermediate lowering with
reduced current I-2
5
Release torch trigger => welding with main current I-1
6
Pull back and hold the torch trigger => lowering to final current I-E
7
Release torch trigger => end of welding
Explanation of symbols:
Pull back the torch trigger and hold it in this position
Release the torch trigger forwards
Pull back the torch trigger and hold it in this position
Release the torch trigger forwards
Abbreviations used:
GPo Gas post-flow time
I-S Starting-current phase: the temperature is raised gently at low welding current,
so that the filler metal can be positioned correctly
I-1 Main current phase (welding current phase): uniform thermal input into the parent
material, whose temperature is raised by the advancing heat
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