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English
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This sequence operation, 4-step with restart disabled, is
the default setting from the factory.
4-Step Trigger Sequence with Restart Option
To select 4-Step with restart sequence:
Action Visualization
+
See “
Setup menu
” section below
then:
Press several times until the LED above lights up
If 4-step restart is enabled from the setup menu the
following sequence will occur for steps 3 and 4 (steps 1
and 2 are not altered by the restart option):
3. Press and hold the TIG torch trigger. The machine
will now decrease the output current at a controlled
rate, or downslope time, until the Crater current is
reached.
4. Release the TIG torch trigger. The output current
will again increase to the Welding current, like in
step 2, to continue welding.
If the weld is completely finished, use the following
sequence instead of step 3 described above.
3A. Quickly press and release the TIG torch
trigger. The machine will now decrease the
output current at a controlled rate, or downslope
time, until the Crater current is reached and the
output of the machine is turned OFF. After the
arc is turned OFF the postflow time will start.
As shown here, after
the TIG torch trigger is
quickly pressed and
released from step 3A,
it is possible to press
and hold the TIG torch
trigger another time to
end the downslope
time and maintain the
output current at the
Crater current. When
the TIG torch trigger is
released the output will
again increase to the
Welding current, like in step 4, to continue welding.
When the main part of the weld is complete go to step 3.
As shown here, again
after the TIG torch
trigger is quickly
pressed and released
from step 3A, it is
possible to quickly
press and release the
TIG torch trigger a
second time to end the
downslope time and
stop welding.
Bi-Level (A1/A2) Trigger sequence
The Bi-Level feature is selectable only if the “option 20”
is previously enabled in the Setup Menu.
To select Bi-Level sequence:
Action Visualization
Press several times until the LED above lights up
With this sequence the arc is started as in the 4S
sequence, this means that steps 1 and 2 are the same.
3. Quickly press and release the TIG torch trigger.
The machine will switch the current level from A1 to
A2 (background current). Each time this trigger
action is repeated the current level will switch
between the two levels.
3A. Press and hold the TIG torch trigger when
the main part of the weld is complete. The
machine will now decrease the output current at
a controlled rate, or downslope time, until the
Crater current is reached. This Crater current
can be maintained as long as necessary.
NOTE: The Restart option and the Pulse function are not
available for Bi-Level Trigger sequence.
