30
In TIG 2T, when you press the momentary switch button
the machine welds and when you let go, the machine
stops. In TIG RESET, the process works different. Let’s
take a look at the sequencer.
If you press and hold the momentary switch button, the
pre-gas flow timer runs (
Fig. 61
) followed by arc
ignition at initial amps (Intl in
Fig. 62
stands for Initial).
Initial amps refers to a small (typically) percentage of
your amperage setting. In the
Fig. 62
example, we
selected a welding amperage of 110 amps, a pre-gas
flow value of 0.4 seconds, and an Intl Amps value of
10%, meaning that when you press and hold the
momentary switch button the pre-gas flow timer runs
for 0.4 seconds followed by arc ignition at 11 amps.
When you let go of the momentary switch button, the
machine goes into t1 (slope up), which we set to 1.5
seconds (
Fig. 63
).
With our selected t1 value, the machine ramps up from
11 amps to 110 amps in 1.5 seconds. Now, you can weld
as long as you want at 110 amps.
If you want to weld at a lower amperage, a swift flick of
the momentary switch button allows you to weld at your
lower set amperage (
Fig. 64
). In our example, we set the
Rst Amps (RESET Amps) to 80%. With this setting, a
swift flick of the momentary switch button allows you to
weld at 88 amps. From here, you can flick the switch as
often as you want to toggle between 88 and 110 amps.
When you finish welding, press and hold the momentary
switch button again and the machine goes into t2 (slope
down). You can put the machine into slope down
regardless of whether you are welding at 88 amps or
110 amps.
As you can see in
Fig. 65
, we set t2 (slope down) to 3.5
seconds. Once the slope down timer runs out, the
machine goes into final amps (Fnl Amps in
Fig. 66
). The
final amps value is typically a small percentage of the
amperage setting just like the initial amps value. Final
amps guard against crater formation, cracks, and other
weld defects.
Fig. 62
Fig. 64
Fig. 63
Fig. 66
Fig. 65
Fig. 61
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