5
6. AC Welding Mode
Depressing the AC welding mode button will illuminate the
green “AC ON” light indicating your Invertig 201 is in the AC
welding mode.
To turn the AC Welding Mode off, depress the AC Welding
Mode button for at least 3 seconds until the green AC welding
mode light goes out.
7. Welding Mode Switch
The welding mode push button allows you to selects the welding
mode of your Invertig 201 AC/DC.
A) Stick Welding – this mode is used when stick electrode
welding. The electrode will always be hot and the gas
solenoid will not operate. The green “Welding Current”
lamp will be illuminated indicating the welding current
is on.
B) TIG 2T mode – With the torch trigger or foot pedal
depressed, your Invertig 201 will start the arc. When the
trigger is released, the unit will stop. Select this welding
mode for operation with the foot pedal or the torch mounted
amperage control. This will generally be the most common
mode of operation.
C) TIG 4T mode – This is like a lock on trigger on a drill or
grinder. This mode is generally used with a TIG torch which
has an trigger to start and stop the arc. It is generally not
used with a foot pedal or a torch mounted amperage control.
When you depress the trigger on the torch, your Invertig 201
provides pre-gas flow for as long as the trigger is depressed.
When the trigger is released, it will slope up to the welding
amperage that has been selected. When the trigger is depressed
again, the welding current will slope down to the final current.
As long as the trigger is depressed, your Invertig 201 will
continue to weld at the final current which has been selected.
When the trigger is released, the arc will extinguish, and the post
flow will start.
We do not recommend using the 4t mode with either the foot
pedal or the torch mounted amperage control.
D) TIG SPOT – the spot welding mode allows you to weld
for between 0.1 and 10 seconds and then the unit will
automatically stop. This would be a good selection if you
were performing a series of repetitive tack welds.
To select the spot welding time, adjust the “SPOT TIME”
buttons (#7) up or down to select a time between 0.1sec and
10.0 sec. Touching the “SPOT TIME” button will display
“Sl” for “Spot Time” in the “Volts” display (#4) and the
actual spot welding time in the "Amps" display (#5).
E) PROGRAM MODE – using a TIG torch which has a
trigger switch, the program mode allows you to switch
between 2 programmed welding amperages.
For example, lets say you have your welding current set at
150 amps, and your “FINAL CURRENT” set at 50% or
75 amps. Depress the trigger and you have pre-gas flow for
as long as you keep the trigger depressed. Release the
trigger and your TIG 201 will begin to weld at 150 amps.
Depress and release the trigger and you will go to your final
current of 75 amps. Depress and release the trigger again
and you will go back to 150 amps. To stop welding, depress
the trigger for 5 seconds or longer. When the trigger is
released the arc is extinguished and the machine will go into
post gas flow.
8. Adjustment Knob
This knob determines the welding amperage. The amperage
on your Invertig 201 can be adjusted from 5 to 200 amps. The
amperage is displayed in the digital display panel (#5) when the
remote switch (#14) is off.
When using a remote amperage control, the amperage
adjustment knob is used to select the maximum amperage
for your particular welding application. For example, when
welding .050" 6061 alloy aluminum, I adjusted the amperage
knob to 100 amps with the remote off. This is about 20% more
power than I will be welding the aluminum with. I then turned
the remote switch on (green “REMOTE ON” lamp is on) and
the digital display showed the minimum amperage of 5 amps.
If I were to depress the foot pedal completely, the maximum
amperage would now be 100 amps.
Setting the machine so the maximum amperage is 100 amps
vs the maximum output of the machine of 200 amps, the pedal
becomes less sensitive. More of a movement in the pedal
results in a smaller variance of the amperage, making it easier to
control the heat and therefore easier to control your puddle.
9. SLOPE DOWN or SPOT TIME Button
When the Welding Mode is in the TIG 2T Mode, TIG 4T Mode,
or the PROGRAM Mode, this button allows you to adjust the
slope down time from 0.1 sec to 10 sec. This is the amount
of time it will take for the welding amperage to go from the
welding amperage to the final current. To adjust the “SLOPE
DOWN” time, depress and release the “SLOPE DOWN”
Button. The “VOLTS” display will flash “SL” for slope, and
the “AMPS” display will flash and display the slope down
time in seconds. While both displays are flashing, adjust the
“AMPS” knob (#8) to set the slope down time.
NOTE: If you are using a torch mounted remote amperage
control or a foot pedal, it is advisable to set the slope down time
to 0.1 sec, as you are controlling the slope down manually with
your remote amperage control or foot pedal.
