Selco Genesis 2000 Manuel D'instructions page 24

7 Welding process
Allows the selection of the welding procedure.
Electrode welding (MMA)
TIG LIFT welding
8 Measurements
Allows the real welding current or voltage to be dis-
played on 4.
Amperes
Volts
3.3.1 Set up
Permits set up and adjustment of a series of additional parameters for
improved and more accurate control of the welding system.
The parameters present at set up are organised in relation to the
welding process selected and have a numerical code.
Entry to set up: by pressing the encoder key for 3 sec. (the
central zero on the 7-segment display confirms entry).
Selection and adjustment of the required parameter: by
turning the encoder until displaying the numerical code relating to that
parameter. If the encoder key is pressed at this point, the value set for
the parameter selected can be displayed and adjusted.
Exit from set up: to quit the "adjustment" section, press the
encoder again.
T o exit the set up, go to parameter "O" (save and quit) and press the encoder.
List of set up parameters
0 Save and quit
Allows you to save the changes and exit the set up.
1 Reset
Allows you to reset all the parameters to the default values.
2 MMA Synergy
Allows you to set the best arc dynamics, selecting the
type of electrode used:
0 Basic
1 Rutile
2 Cellulose
3 Steel
4 Aluminium
5 Cast iron
Default 0
Selecting the correct arc dynamics enables maximum
benefit to be derived from the power source to achieve
the best possible welding performances.
Perfect weldability of the electrode used is not guaran-
teed (weldability depends on the quality of the consum-
ables and their preservation, the operating and welding
conditions, the numerous possible applications, etc.).
3 Hot start
Allows adjustment of the hot start value in MMA.
Permits an adjustable hot start in the arc striking phases,
facilitating the start operations.
Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 80%
4 Arc force
Allows adjustment of the Arc force value in MMA.
Permits an adjustable energetic dynamic response in
welding, facilitating the welder's operations.
Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 30%
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Arc detachment voltage
Allows you to set the voltage value at which the electric arc
switch-off is forced.
It permits improved management of the various operating
conditions that occur. In the spot welding phase, for example, a
low arc detachment voltage reduces re-striking of the arc when
moving the electrode away from the piece, reducing spatter,
burning and oxidisation of the piece.
If using electrodes that require high voltages, you are advised to
set a high threshold to prevent arc extinction during welding.
Never set an arc detachment voltage higher than
the no-load voltage of the power source.
Parameter set in Volts (V).
Minimum 0V, Maximum 99.9V, Default 57V
Antisticking enable
Permits enabling or disabling of the antisticking function.
The antisticking function permits reduction of the weld-
ing current to 0A in the event of a short circuit occurring
between the electrode and the piece, protecting the
gun, electrode and welder and guaranteeing safety in
the condition that has occurred.
ON Antisticking active
OFF Antisticking not active
Arc force cut-in threshold
Permits adjustment of the voltage value at which the power
source supplies the current increase typical of the arc force.
Allows you to obtain different arc dynamics:
Low threshold: infrequent use of arc-force creates a
very stable but not very reactive arc (ideal for expert
welders and for easy-to-weld electrodes).
High threshold: frequent use of arc-force creates a
slightly more unstable but very reactive arc, able to cor-
rect user errors or compensate for the electrode char-
acteristics (ideal for inexpert welders and for difficult-to-
weld electrodes).
Parameter set in Volts (V).
Minimum 0V, Maximum 99.9V, Default 8V
Dynamic power control (DPC)
It enables the desired V/I characteristic to be selected.
I = C Constant current
The increase or reduction in arc length has no effect on
the welding current required.
Basic, Rutile, Acid, Steel, Cast iron
1÷ 20* Falling characteristic with adjustable slope
The increase in arc length causes a reduction in welding
current (and vice versa) according to the value imposed
by 1 to 20 amps per volt.
Cellulose, Aluminium