Lincoln Electric IM761 POWER FEED 15M - Manual (Page 18)

B-4 OPERATION B-4
MAKING A WELD WITH WAVEFORM
TECHNOLOGY POWER SOURCES
The serviceability of a product or structure utilizing
the welding programs is and must be the sole
responsibility of the builder/user. Many variables
beyond the control of The Lincoln Electric Company
affect the results obtained in applying these pro-
grams. These variables include, but are not limited
to, welding procedure, plate chemistry and tempera-
ture, weldment design, fabrication methods and ser-
vice requirements. The available range of a welding
program may not be suitable for all applications, and
the build/user is and must be solely responsible for
welding program selection.
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The steps for operating the Power Wave will vary
depending upon the user interface of the welding sys-
tem. The flexibility of the Power Wave lets the user
customize operation for the best performance.
First, consider the desired welding process and the
part to be welded. Choose an electrode material,
diameter, shielding gas and process (GMAW, GMAW-
P, GMAW-STT, etc.)
Second, find the program in the welding software that
best matches the desired welding process. The stan-
dard software shipped with the Power Waves encom-
passes a wide range of common processes and will
meet most needs. If a special welding program is
desired, contact the local Lincoln Electric sales repre-
sentative.
All adjustments are made on the user interface.
Because of the different configuration options your
system may not have all of the following adjustments.
Regardless of availability, all controls are described
below.
GENERAL WELDING ADJUSTMENTS
1. WFS / AMPS:
In synergic welding modes (synergic CV, pulse
GMAW, STT or power mode) WFS (wire feed speed)
is the dominant control parameter, controlling all other
variables. The user adjusts WFS according to factors
such as weld size, penetration requirements, heat
input, etc. The power source then uses the WFS set-
ting to adjust its output characteristics (output voltage,
output current) according to pre-programmed settings.
In non-synergic modes, the WFS control behaves
more like a conventional CV power source where
WFS and voltage are independent adjustments.
Therefore to maintain the arc characteristics, the oper-
ator must adjust the voltage to compensate for any
changes made to the WFS.
2. VOLTS / TRIM:
In constant voltage modes (synergic CV, standard
CV) the control adjusts the welding voltage.
In pulse synergic welding modes (pulse GMAW only)
the user can change the Trim setting to adjust the arc
length. It is adjustable from 0.500 to 1.500. A Trim set-
ting of 1.000 is a good starting point for most condi-
tions.
In STT modes, the user can adjust the Trim setting to
change the overall heat input to the weld.
3. WELDING MODE:
May be selected by name (CV/MIG, CC/Stick Crisp,
Gouge, etc.) or by a mode number (10, 24, 71, etc.).
Selecting a welding mode determines the output char-
acteristics of the power source.
4. ARC CONTROL:
Also known as Inductance or wave control. Allows
operator to vary the arc characteristics from "soft" to
"harsh" in all weld modes. It is adjustable from -10.0 to
+10.0, with a nominal setting of 0.0. Also varies induc-
tance in CV, in pulse modes, changes pulsing fre-
quency and background current.
POWER FEED 15M
WARNING