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Special functions and options
Arc break watch-
dog function
If the arc breaks and the current does not start to flow again within the time specified in the
set-up menu, the power source cuts out automatically. The service code "no | Arc" appears
on the control panel.
To start the welding process again, press any key on the control panel or the torch trigger.
Ignition time-out
function
The power source has an ignition time-out function.
Once the torch trigger is pressed, gas pre-flow begins immediately. Ignition then begins. If
an arc does not appear within the time specified in the set-up menu, the power source cuts
out automatically. The service code "no | IGn" appears on the control panel.
To try again, press any key on the control panel or press the torch trigger.
Tacking function The tacking function is available for the TIG DC welding process.
When a time period is specified for the tAC (tacking) set-up parameter, the tacking function
is assigned to 2-step mode and 4-step mode. The operating sequence of the modes re-
mains 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.
Mode of operation of tacking function when the TIG DC welding process is selected:
Tacking function - welding current curve
Legend:
tAC Duration of pulsed welding current for the tacking process
I
S
Starting current
I
E
Final current
UPS Upslope
t
Down
Downslope
I
1
Main current
tAC
I
1
I
t
UPS t
down
I
S
I
E
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