Tacking Function - Fronius MagicWave 190 Operating Instructions Manual

Tacking function

The tacking function is available for the TIG DC welding process.
When a time period is specified for the tacking setup parameter (4), the tacking function is
assigned to 2-step mode and 4-step mode. The operating sequence of the modes remains
unchanged.
The tacking (TAC) indicator lights up in the status bar on the display:
During this period, there is a pulsed welding current that makes the weld pool run together
better when two parts are being tacked.
Mode of operation of tacking function for TIG DC welding:
(1)
Tacking function - welding current curve
Legend:
(1) Main current, (2) Starting current, (3) UpSlope, (4) Duration of pulsed welding current
for tacking, (5) DownSlope, (6) Final current
The following points apply to the pulsed welding current:
The power source automatically regulates the pulsing parameters depending on the set
main current (1).
There is no need to set any pulsing parameters.
The pulsed welding current begins
-
-
Depending on what tacking period has been set, the pulsed welding current may continue
up to and including the final current phase (6) (tacking setup parameter (4) set to "on").
After the tacking time has elapsed, welding continues at a constant welding current, and
any pulsing parameters that may have been set continue to be available.
66
I [A]
(2)
NOTE!
after the end of the starting-current phase (2)
with the UpSlope phase (3)
(4)
(3)
(6)
t [s]
(5)