Fronius TransTig 1750 Puls, Operating Instructions Manual

Page: 47 / 88

45
EN
TIG modes
Safety
See the "The Setup menu" section for information on the settings, setting range and units
of measurement of the available welding parameters.
Symbols and
their explanations
WARNING! Operating the equipment incorrectly can cause serious injury and
damage. Do not use the functions described until you have thoroughly read and
understood the following documents:
-
these operating instructions
- all the operating instructions for the system components, especially the safe-
ty rules
Pull back and hold the torch trig-
ger Release the torch trigger Briefly pull back the torch trigger
(< 0.5 s)
Push forward and hold the torch
trigger Release the torch trigger
GPr
Gas pre-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
t
S
Starting current time
t
up
Upslope phase: the starting current is continuously increased until it reaches the main
current (welding current) I
1
I
1
Main current phase (welding current phase): uniform thermal input into the base material,
whose temperature is raised by the advancing heat
I
2
Reduced current phase: intermediate lowering of the welding current in order to prevent
any local overheating of the base material