Fronius TransTig 1700, Operating Instructions Manual

Page: 57 / 124

TIG modes
Safety
WARNING!
Danger from incorrect operation.
Possible serious injury and damage to property.
▶
Do not use the functions described here until you have read and completely
understood these Operating Instructions.
▶
Do not use the functions described here until you have fully read and under-
stood all of the Operating Instructions for the system components, in partic-
ular the safety rules!
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 explana-
tions
Pull back and hold the torch trigger / 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
SPt
Spot welding time
I
S
Starting-current phase: the temper-
ature is raised gently at low welding
current, so that the filler metal can
be positioned correctly
I
E
Final current phase: to prevent any
local overheating of the base materi-
al due to heat build-up towards the
end of welding. This eliminates any
risk of weld seam drop-through.
t
S
Starting current time
t
E
Final current time
UPS
Upslope phase: the starting current
is continuously increased until it
reaches the main current (welding
current) I
1
t
down
Downslope phase: the welding cur-
rent is continuously lowered until it
reaches the end-crater current.
I
1
Main current phase (welding-current
phase): uniform thermal input into
the base material, whose temperat-
ure is raised by the advancing heat
I-2
Reduced current phase: intermedi-
ate lowering of the welding current
in order to prevent any local over-
heating of the base material
57
EN