Fronius TransTig 1600, Operating Instructions And Spare Parts List

Page: 30 / 58

12
Fig. 12 Functional sequence in 4-step operating mode - Variant I - with intermediate lowering
- Activated from TIG torch trigger with double-pushbutton function
-
Intermediate lowering to the reduced current I
E:
Welding current can be lowered
from the main current to the reduced current I
E
and back, without interrupting the
weld-ing sequence
- In the "PRESETTINGS LEVEL___" (see "Working with the program-levels"), TIG
parameters, SFS must be set to OFF
Important!
- Current reduction with no interruption to welding is only possible when the main
current is activated
- If the torch trigger is accidentally pushed forward in open circuit, no ignition cycle
takes place
Push trigger forward and hold it
Release the torch trigger
Release the torch trigger
Pull back and hold down the torch trigger once again
t
Pull back torch trigger and hold it down
Release the torch trigger
I
E
Gas post-flow time
End of welding
Crater-fill current I
E
I
S
I
H
I
E
I
I
H
Start of cycle
Gas pre-flow time
Current rise via up-slope
Current drop via
down-slope
Crater-fill current I
E
Arc ignition with start arc I
S
Welding with pre-set
main current I
H
Current rise via up-slope
Current drop via
down-slope
Welding with pre-set
main current I
H
4-step mode -
with intermediate
lowering