Lincoln Electric IM718 POWER WAVE AC_DC - Manual (Page 27)

B-7 OPERATION B-7
CV 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. With syner-
gic programs, when the wire feed speed changes the
Power Wave will automatically adjust the voltage cor-
respondingly 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.
All CV Modes:
Wave control adjusts the inductance of the wave
shape. (This adjustment is often referred to as "pinch".
Inductance is inversely proportional pinch.)
Increasing wave control greater than 0.0 results in a
crispier, colder arc while decreasing the wave control
to less than 0.0 provides a softer, hotter arc.
(See Figure B.2 for CURRENT WAVE FORM (CV)
POWER WAVE AC/DC
Wave Control 0.00
Wave Control +10.0
Wave Control -10.0
FIGURE B.2
Current
Time