Pulse Welding; Constant Voltage Welding - Lincoln Electric POWER WAVE S500 CE Operator's Manual

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
characteristics. UltimArc™ Control is adjustable from –
10.0 to +10.0 with a nominal setting of 0.0.
SMAW (Stick) Welding
The welding current and Arc Force settings can be set
through a Power Feed 10M, LF45, LF45S or Power
Feed 25M wire feeder.
Alternatively an optional Stick / TIG UI (K2828-1) can be
installed into the power source to control these settings
locally.
In a SMAW (STICK mode), Arc Force can be adjusted. It
can be set to the lower range for a soft and less
penetrating arc characteristic (negative numeric values)
or to the higher range (positive numeric values) for a
crisp and more penetrating arc.
Normally, when welding with cellulosic types of
electrodes (E6010, E7010, E6011), a higher energy arc
is required to maintain arc stability. This is usually
indicated when the electrode sticks to the work-piece or
when the arc becomes unstable during manipulative
technique. For low hydrogen types of electrodes (E7018,
E8018, E9018, etc.) a softer arc is usually desirable and
the lower end of the Arc Control suits these types of
electrodes. In either case the arc control is available to
increase or decrease the energy level delivered to the
arc.
GTAW (TIG) WELDING
The welding current can be set through a Power Feed
10M, LF45, LF45S or Power Feed 25M wire feeder.
Alternatively an optional Stick / TIG UI (K2828-1) can be
installed into the power source to control these settings
locally.
The TIG mode features continuous control from 5 to
350A with the use of an optional foot amptrol (K870).
The POWER WAVE® S350/S500CE can be run in either
a Touch Start TIG mode or Scratch start TIG mode.

CONSTANT VOLTAGE WELDING

Synergic CV
For each wire feed speed, a corresponding voltage is
preprogrammed into the machine through special
software at the factory.
The nominal preprogrammed voltage is the best average
voltage for a given wire feed speed, but may be adjusted
to preference.
When the wire feed speed changes, the POWER
®
WAVE S350/S500CE automatically adjusts the voltage
level correspondingly to maintain similar arc
characteristics throughout the WFS range.
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Non Synergic CV
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
operator must adjust the voltage to compensate for any
changes made to the WFS.
All CV Modes
Pinch adjusts the apparent inductance of the wave
shape. The "pinch" function is inversely proportional to
inductance. Therefore, increasing Pinch Control greater
than 0.0 results in a crisper arc (more spatters) while
decreasing the Pinch Control to less than 0.0 provides a
softer arc (less spatter).

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. Using a preset voltage becomes impractical and
instead the arc length is set by adjusting "trim". 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 vales less than 1.00
decrease the arc length (see figure below).
1
1. Trim 0.50: Arc Length Short.
2. Trim 1.00: Arc Length Medium.
3. Trim 1.50: Arc Length Long.
Most pulse welding programs are synergic. As the wire
feed speed is adjusted, the POWER WAVE
S350/S500CE will automatically recalculate the
waveform parameters to maintain similar arc properties.
®
The POWER WAVE
control" to compensate for changes in the electrical stick
out while welding (Electrical stick-out is the distance
from the contact tip to the work piece).
®
The POWER WAVE
optimized for a 19mm stick-out. The adaptive behavior
supports a range of stick-outs from 13 to 32mm. At very
low or high wire feed speeds, the adaptive range may be
less due to reaching physical limitations of the welding
process.
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2 3
®
S350/S500CE utilize "adaptive
S350/S500CE waveforms are
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