Fronius TransTig 1600, Operating Instructions And Spare Parts List

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11
Fig. 11 Functional sequence in 4-step operating mode - without intermediate lowering
Start of cycle
Gas pre-flow time
Current rise via up-slope
Current drop via
down-slope
Gas post-flow time
End of welding
Crater-fill current I
E
Pull back torch trigger and hold it down
Release the torch trigger
Release the torch trigger
Arc ignition with start arc I
S
Welding with pre-set
main current I
H
Pull back torch trigger and hold it down
I
S
I
H
I
E
I
t
- In the manual or automatic welding modes, for flawless welding joints
- Pre-settable parameters such as gas pre-flow, start arc, upslope time, main current,
downslope time, crater-fill cur-rent and gas post-flow time
- In the "PRESETTINGS LEVEL ___" program level (see section headed “Working
with the program-levels”) (TIG parameters), SFS must be set to OFF
Functional sequence
1. Pull back and hold trigger
- Gas pre-flow time elapses
- Arc ignites with the pre-set start-arc current I
S
(with HF ignition; HF cuts out automa-
tically after the ignition cycle)
- LED (9) lights up
2. Release trigger
- Welding current rises via the pre-set upslope to the value set on dial (15) for the
welding current I
H
- LED (10) lights up
3. Pull back and hold trigger again
- Welding current drops via the downslope set on dial (11) to the value set for the
crater-fill current I
E
on dial (16)
- LED (12) lights up
4. Release trigger
- Arc goes out
- Internally pre-set gas post-flow time elapses
4-step mode -
without interme-
diate lowering