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VANTAGE 549
coMMon welDinG proceDUres
WARNING
Making a Weld
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 programs. These variables include, but are
not limited to, welding procedure, plate chemistry and
temperature, weldment design, fabrication methods and
service 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.
Choose the electrode material, electrode size, shielding gas, and
process (GMAW, GMAW-P etc.) appropriate for the material to be
welded.
Select the weld mode that best matches the desired welding
process. The standard weld set shipped with the VANTAGE® 549
encompasses a wide range of common processes that will meet
most needs. If a special weld mode is desired, contact the local
Lincoln Electric sales representative.
All adjustments are made through the user interface. Because of
the different configuration options your system may not have all of
the following adjustments.
See Accessories Section for Kits and Options available to use with
the VANTAGE® 549.
Definition of welDinG MoDes
NON-SYNERGIC WELDING MODES
• A Non-synergic welding mode requires all welding process
variables to be set by the operator.
SYNERGIC WELDING MODES
• A Synergic welding mode offers the simplicity of single knob
control. The machine will select the correct voltage and
amperage based on the Wire Feed Speed (WFS) set by the
operator.
Basic Welding Controls
Weld Mode
Selecting a weld mode determines the output characteristics of
the VANTAGE® 549 power source. Weld modes are developed
with a specific electrode material, electrode size, and shielding
gas. For a more complete description of the weld modes
programmed into the VANTAGE® 549 at the factory, refer to the
Weld Set Reference Guide supplied with the machine.
Wire Feed Speed (WFS)
In synergic welding modes (synergic CV, GMAW-P), WFS is the
dominant control parameter. The user adjusts WFS according to
factors such as wire size, penetration requirements, heat input, etc.
The VANTAGE® 549 then uses the WFS setting to adjust the voltage
and current according to settings contained in the VANTAGE® 549.
In non-synergic modes, the WFS control behaves like a
conventional power source where WFS and voltage are
independent adjustments. Therefore, to maintain proper arc
characteristics, the operator must adjust the voltage to
compensate for any changes made to the WFS.
Amps
In constant current modes, this control adjusts the welding
amperage.
Volts
In constant voltage modes, this control adjusts the welding
voltage.
Trim
In pulse synergic welding modes, the Trim setting adjusts the arc
length. Trim is adjustable from 0.50 to 1.50. 1.00 is the nominal
setting and is a good starting point for most conditions.
UltimArc™ Control
UltimArc™ Control allows the operator to vary the arc charac-
teristics. UltimArc™ Control is adjustable from –10.0 to +10.0
with a nominal setting of 0.0.
PULSE WELDING
Pulse welding procedures are set by controlling an overall "arc
length" variable. When pulse welding, the arc voltage is highly
dependent upon the waveform. The peak current, back ground
current, rise time, fall time and pulse frequency all affect the voltage.
The exact voltage for a given wire feed speed can only be predicted
when all the pulsing waveform parameters are known. Voltage or
Trim can be adjusted.
Trim adjusts the arc length and ranges from 0.50 to 1.50 with a
nominal value of 1.00. Trim values greater than 1.00 increase the
arc length, while values less than 1.00 decrease the arc length.
FIGURE B.14
(See Figure B.14)
Trim .50
Arc Length Medium
Arc Length Short
B-8
OPERATION
Trim 1.50
Trim 1.00
Arc L ength Long
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