Lincoln Electric CITOTIG 200 AC/DC Operator's Manual page 19

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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.
Spot TIG (GTAW welding)
Enter in Menu GTAW to enable spot welding function.
When enabled, the spot tig function replaces the 2S
trigger sequence.
To select Spot function:
Output
Press until the LED above lights up
This welding mode is especially thought to tack or weld
thin materials.
It uses HF start and immediately delivers the set current
without any upslope/downslope.
When spot is selected automatically you have this setting:
2S without restart
Working only in HF mode
Upslope and downslope are disabled
When spot is selected in left display without any welding
operation you can see the text:
S-V.V
V.V indicates the output voltage [1.0-1.5V] when not
welding.
While right displays shown the set current.
For default the spot time is 0s: that means the output
current is delivered only when the trigger button is
pushed.
The welding time is set with the spot time control and will
be constant independently from the operation of the
Trigger. To set the spot time, user has to push SEL button
until text SPT appears on the left display: turning now the
main know is possible to set SPT time from 0 to 100s.
English
Visualization
17
Bi-Level (Set/A2) Trigger sequence
Enter Menu GTAW and enable BILV option.
When enabled, the bi-level tig function replaces the 4S
trigger sequence.
To select Bi-Level sequence:
Output
Press several times until the LED above lights up
When bi-level is selected in left display without any
welding operation you can see the text:
B-V.V
V.V indicates the output voltage [1.0-1.5V] when not
welding.
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 Set to A2
(background current). Each time this trigger action is
repeated the current level will switch between the two
levels.
3.A. 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.
To set the A2 level, user has to push SEL button until text
A2 appears on the left display: turning now the main know
is possible to set A2 in percentage of the setting current.
NOTE: The Restart option and the Pulse function are not
available for Bi-Level Trigger sequence.
LIFT TIG ON sequence
When lift tig process is selected, it is possible to performe
welding operation without the use of a trigger.
To select ON sequence:
Output
Press several times until the LED above lights up
When the sequence is selected it is possible to start a
weld with the lift method without pushing trigger.
To end the weld it is necessary to break the arc.
The parameter Starting current, Final slope and finishing
current are ignored.
Visualization
Visualization
English

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