Welding Mode Descriptions; Constant Voltage Welding; Wave Control - Lincoln Electric POWER WAVE SVM156-A Service Manual

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WELDING MODE DESCRIPTIONS

CONSTANT VOLTAGE WELDING

For each wire feed speed, a corresponding voltage is
preprogrammed into the machine through special soft-
ware at the factory. The preprogrammed voltage is the
best average voltage for a given wire feed speed. With
synergic programs, when the wire feed speed changes,
the Power Wave will automatically adjust the corre-
sponding voltage.

Wave Control +10.0

Wave Control 0.00
Current
Time
OPERATION
FIGURE B.2 – CV WAVE CONTROL CHARACTERISTICS
Wave Control -10.0
POWER WAVE 455/R
Wave control adjusts the inductance of the waveshape.
(This adjustment is often referred to as "pinch". In-
ductance is inversely proportional to pinch.) Increasing
wave control greater than 0 results in a harsher, colder
arc, while decreasing the wave control to less than 0
provides a softer, hotter arc. (See Figure B.2.)
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