Selco Genesis 302 AC/DC, Instruction Manual

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Slope-down
Allows you to set a gradual passage between the weld-
ing current and the final current.
Parameter set in seconds (s).
Minimum 0.0s, Maximum 10.0s, Default 0.0s
Final current
Permits adjustment of the final current.
Parameter set in Amps (A).
Minimum 6A, Maximum Imax, Default 8A
Post-gas
Permits setting and adjustment of the gas flow at the
end of welding.
Minimum 0.0s, Maximum 25.0s, Default 5.0s
AC MIX
(AC) Welding current
Permits adjustment of the (AC) welding current.
Parameter set in Amps (A).
Minimum 6A, Maximum Imax, Default 100A
(DC) Welding current
Permits adjustment of the (DC) welding current.
Parameter set in Amps (A).
Minimum 6A, Maximum Imax, Default 20A
AC time
Allows adjustment of the welding time in direct current
when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s
DC time
Allows regulation of the welding time in alternating cur-
rent when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s
7 Selection parameters
Allows entry to set up, the selection and the setting of
the welding parameters.
8 (AC) Welding parameters
To access this menu press and hold button no. 7 for 2
sec at least.
(TIG AC) AC frequency
Allows regulation of the polarity inversion frequency in
TIG AC welding.
Allows focusing action and better stability of the electric
arc to be obtained.
Parameter setting: Hertz (Hz).
Minimum 20Hz, Maximum 150Hz, Default 50Hz
(TIG AC) AC balance
Allows regulation of the duty cycle in TIG AC welding.
Allows the positive polarity to be maintained for a
longer or shorter time.
Parameter setting: percentage (%).
Minimum 15%, Maximum 65%, Default 35%
(TIG AC) Fuzzy logic
Allows regulation of the power delivered by the system
during the arc striking phase by selecting the electrode
diameter used.
Makes it possible to suitably heat the electrode and/or
to keep the tip intact.
Parameter setting: millimetres (mm).
Minimum 0.1mm, Maximum 5.0mm, Default 2.4mm
9 Welding process
Allows the selection of the welding procedure.
Electrode welding (MMA)
TIG DC welding
TIG AC welding
10 Welding methods
In 2 Step, pressing the button causes the gas to flow and
strikes the arc; when the button is released the current
returns to zero in the slope descent time; once the arc
is extinguished, the gas flows for the post-gas time.
In 4 Step the first pressure on the button causes the gas
to flow, performing a manual pre-gas; when it is
released the arc is struck.
The following pressure and the final release of the but-
ton cause the current slope descent and the post-gas
time to start.
In BILEVEL the welder can weld with 2 different cur-
rents previously set with “I2” (6).
The first pressure on the button leads to the pre-gas
time, the striking of the arc and welding with the initial
current.
The first release leads to the current slope-up “I1”. If the
welder presses and releases the button quickly, there
is a change to “I2”; pressing and releasing the button
quickly returns to “I1” and so on.
Pressing it for a longer time starts the current slope-
down which leads to the final current.
Releasing the button extinguishes the arc while the gas
continues to flow for the post-gas time.
11 Current pulsation
CONSTANT current
PULSED current
MEDIUM FREQUENCY current
12 Control methods
From front panel “internal”
From remote panel “external”
13 Signal cable (RC) input
Allows connection of the external devices such as RC.
4.2.1 Set up
Permits set-up and adjustment of a series of additional param-
eters for improved and more accurate control of the welding
system.
Entry to set-up: press key 7 for 3 sec. (the central zero on the
7-segment display confirms entry).
Selection and adjustment of the required parameter: rotate
the encoder until you display the numerical code for the
required parameter. By pressing key 7 at this point, you can
display the value set for the parameter selected and adjust it.
Exit from set-up: to quit the "adjustment" section, press key 7
again.
To exit the set-up, go to parameter "O" (save and quit) and press
key 7.