Tacking Function - Fronius TransTig 1750 Puls Operating Instructions Manual

I
1
TIG pulsing - welding current curve
Legend:
I
S
I
E
t
up
t
Down
*) (1/F-P = time interval between two pulses)

Tacking function

The power source has a tacking function.
When a time period is specified for the tAC (tacking) setup parameter, the tacking function
is assigned to the 2-step mode and 4-step mode. The operating sequence of the modes
remains unchanged.
During this period, a pulsed welding current is present that makes the weld pool run togeth-
er better when two parts are being tacked.
How the tacking function works:
I
1
Tacking function - welding current curve
Legend:
tAC
I
I
S
t
up
Starting current
End current
Upslope
Downslope
tAC
I
I
S
t
up
Duration of pulsed welding current for the tacking process
1/F-P
dcY
F-P Pulse frequency *)
dcY Duty cycle
I-G Ground current
I Main current
1
t
I
E
t
t
down
I
E
t
down
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