147
EN
Legend:
(1).... Gas post-flow time at any given mo-
ment
(2).... Welding current at any given mo-
ment
G-H.... Post-flow lmax
G-L .... Post-flow lmin
Gas post-flow time as a function of the welding current
If Aut is selected, the gas post-flow time is calculated automatically. This takes the select-
ed process (AC or DC welding) into account.
Tacking function
for the TIG DC welding process: Duration of the pulsed welding current at the start of tack-
ing
Unit s
Setting range OFF / 0.1 - 9.9 / ON
ON The pulsed welding current remains in effect until the end of the
tacking operation
0.1 - 9.9 s The set time begins with the upslope phase. After the end of the
pre-set time period, welding continues with a constant welding
current; any pulsing parameters that have been set are available.
OFF The tacking function is deactivated
Pulse frequency
Unit Hz / kHz
Setting range OFF / 0.20 Hz - 2.00 kHz
The selected pulse frequency is also used for the reduced current I
2
.
IMPORTANT!If the pulse frequency is set to "OFF":
- then the welding parameters Duty Cycle, Ground Current and Wirefeed spd2 (from
cold wire setup) are not available
- the wire feed speed set on the control panel is used for constant wirefeed at a con-
stant welding current.
Setting the pulse frequency:
0.2 Hz to 5 Hz Thermal pulsing (out-of-position welding, automated welding)
1 kHz to 2 kHz Arc-stabilising pulsing (stabilising the arc at a low welding cur-
rent)
Duty Cycle
The ratio of pulse duration to base current duration when a pulse frequency has been set
Unit %
Setting range 10 - 90
Ground current
Unit % (of main current I
1
)
Setting range 0 - 100
I
min
I
max
I
t
G-H
G-L
(1)
(2)
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