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Operating manual
PROTIG 201 DC FV
Translation of the original
instructions
TIG DC - Pulse
This pulsed current welding mode is a combination of high current pulses (I, welding pulse) and low current pulses (I_Cold, part cooling pulse). This
pulse mode allows to assemble pieces while keeping the machine cool.
Example :
The welding current I is set to a 100A and % (I_cold) = 50%, thus a Cold current of = 50% x 100A = 50A. F(Hz) is set to 2 Hz, the signal period will
be 1/2Hz = 500 ms. Every 250ms, a 100A pulse then a 50A pulse will succeed each other.
Pulse TIG DC
The grey areas are not useful for this mode.
Recommendations:
Choice of frequency:
• If welding with manual filler metal, then F(Hz) synchronised to the filler metal action,
• If thin without filler (< 0.8 mm), F(Hz) >> 10Hz
The pulse frequency is adjusted by pressing and releasing the «F(Hz)» button and then activating the main incremental encoder. Frequency value
increases when the incremental encoder is operated clockwise and decreases when it is operated anti-clockwise. Once the setting is set, it is possible
to press and release again the «F(Hz)» button to re-link the main incremental encoder to the current setting or to wait 2 seconds.
Designation
Setting
Description & advice
Pre-gas
0 - 60 s
Time to purge the torch and to protect the area with gas before ignition
Rising current
0 - 60 s
Current rise ramp.
Welding current
10 - 200 A
Welding current
Cold current/Background current)
20 - 99 %
Second welding current known as «cold» welding current
Pulse frequency
0.1 - 2000 Hz
Pulse frequency
Evacuation
0 - 60 s
Down slope current.
Post-gas
0 - 60 s
Duration for which gas is released after the arc has stopped. It protects the weld pool and
the electrode against oxidisation when the metal is cooling down.
TIG - Advanced menu
Additional settings can be accessed in the advanced menu.
These advanced settings can be accessed by pressing the button
for more than 3 seconds. Rotating the wheel gives access to the following
advanced settings:
Parameter Description
Setting
Standard
Pulse
Recommendations
« ISa »
Current threshold when
starting the weld.
10 % - 200 %
This current threshold is a phase before the current upslope.
« tSa »
Time threshold when
starting the weld.
0 s - 10 s
« ISo »
Current threshold when
the weld stops.
10 % - 100 %
This current threshold is a phase before the current upslope.
« tSo »
Time threshold when the
weld stops.
0 s - 10 s
« dcy »
Duty Cycle
20 % - 80 %
Time balance of the hot current (I) of the pulsation
The parameter to be modified is validated by pressing the button
. The advanced settings menu can be exited with «ESC».
