Lincoln Electric K2803, Operator'S Manual

Page: 27 / 34

English English 24
is a cancellation of the interacting forces. See Figure
below.
Figure: Arc Interference
Figure: Synchronized Arcs
WARNING
Never simultaneously touch electrically "hot" parts in the
electrode circuits of two different welders. The electrode
to electrode no load voltage of multiple arc systems with
opposite polarities can be double the no load voltage of
each arc. Consult the Safety information located at the
front of the Instruction Manual for additional information.
Basic Modes of Operation
Constant Current (CC)
CONSTANT CURRENT (CC)

Operator presets Current and desired Voltage.

The Power Source:
-
Goal is to maintain a constant arc length.
- Drives a constant Current.
- Synergically Controls WFS to Maintain Voltage
at the desired Set point.

Arc Length is proportional to Voltage.

Traditionally used for larger diameter wires and
slower travel speeds.
Figure: Constant Current
CONSTANT VOLTAGE (CV)

Operator presets Wire Feed Speed and desired
Voltage.

The Power Source:
-
Goal is to maintain a constant arc length.
- Commands constant wire feed speed.
- Synergically Controls Current to Maintain
Voltage at the desired Set point.

Arc Length is proportional to Voltage.

Traditionally used for smaller diameter wires and
faster travel speeds.
Figure: Constant Voltage
Weld Sequence
The weld sequence defines the weld procedure from
beginning to end. The Power Wave
®
AC/DC 1000 SD
CE not only provides adjustment of basic welding
parameters, but also allows the operator to fine tune the
start and finish of each weld for superior performance.
All adjustments are made through 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.
Start Options
The Strike, Start, and Upslope parameters are used at
the beginning of the weld sequence to establish a stable
arc and provide a smooth transition to the welding
parameters.

Arc Delay inhibits the wire feed for up to 5 seconds
to pro- vide an accurate weld start point. Typically
used in multi-arc systems

Strike settings are valid from the beginning of the
sequence (Start Button Pressed) until the arc is
established. They control Run-in (speed at which
the wire approaches the workpiece), and provide
the power to establish the arc.
Typically output levels are increased and WFS
is reduced during the Strike portion of the weld
sequence

Start values allow the arc to become stabilized once
it is established.
Extended Start times or improperly set
parameters can result poor starting

Upslope determines the amount of time it takes to
ramp from the Start parameters to the Weld
parameters. The transition is linear and may be up
or down depending on the relationship between the
Start and Weld settings.