Table of Contents
Advertisement
Pulse Mode
Figure 11
Select "Pulse" menu to activate/deactive the pulse
mode.
Figure 12
When activated some additional icons will appears in
the left side:
Pulse frequency
Background current (percentage of Welding current)
Duty cycle.
Trigger Interlock type.
Select "trigger Interlock" Menu to change the way that
trigger switch on torch is managed. Push knob button to
select the desired one:
2-STEP
4-STEP
2-STEP RESTART
4-STEP RESTART
4 STEP-Bi Level
SPOT
TFT
See dedicated section for additional description.
English
TIG Trigger Sequences
TIG welding can be done in either the 2-step or 4-step
mode. The specific sequences of operation for the
trigger modes are explained below.
Legend of the symbols used:
Torch Pushbutton
Output Current
Gas Pre-flow
Gas
Gas Post-flow
2-Step Trigger Sequence
With the 2-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
1. Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started according to the selected welding mode.
After the arc is started the output current will be
increased at a controlled rate, or upslope time, until
the Welding current is reached.
If the torch trigger is released during the upslope time
the arc will stop immediately and the output of the
machine is turned OFF. Release the TIG torch trigger
to stop welding. 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 gas valve will remain
open to continue the flow of the shielding gas to the hot
electrode and work piece.
11
English
Advertisement
Table of Contents
