Constant Voltage Welding - Lincoln Electric POWER WAVE IM716 Operator's Manual

B-7

CONSTANT VOLTAGE WELDING

Synergic CV:
For each wire feed speed, a corresponding voltage is
preprogrammed into the machine through special soft-
ware at the factory. The nominal preprogrammed volt-
age 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 automati-
cally adjusts the voltage level correspondingly to
maintain similar arc characteristics throughout the
WFS range.
Non Synergic CV:
This type of CV mode behaves more like a conven-
tional CV power source. Voltage and WFS are inde-
pendent adjustments. Therefore to maintain the arc
characteristics, the operator must adjust the voltage to
compensate for any changes made to the WFS.
Wave Control +10.0
Current
Time
OPERATION
FIGURE A.5
CURRENT WAVE FORM (CV)
Wave Control 0.00
Wave Control -10.0
POWER WAVE 455/STT
All CV Modes:
Arc Control, often referred to as wave control, adjusts
the inductance of the waveshape. The wave control
adjustment is similar to the "pinch" function in that it is
inversely proportional to inductance. Therefore,
increasing wave control greater than 0.0 results in a
harsher, colder arc while decreasing the wave control
to less than 0.0 provides a softer, hotter arc.
(See Figure A.5)
B-7