No. P10355
|38 |
10. OPERATION (continued)
10.1.6 CONSTANT PENETRATION Function
For conventional CO
2
/MAG welding, as the wire extension changes, welding current
changes and base metal penetration depth and bead width change. By setting the
constant penetration function to “ON”, wire feed speed is automatically adjusted so that
constant current can be always obtained even when wire extension varies. As a result,
effects of reducing change in penetration depth and in bead width of the base metal are
able to be obtained. When penetration depth is particularly held constant, set the
CONSTANT PENETRATION function to “ON” using the CONSTANT PENETRATION key
[15].
Penetration control ON/OFF selection can be done by using the CONSTANT
PENETRATION key [15]. When setting the CONSTANT PENETRATION function to ON,
the CONSTANT PENETRATION lamp (located at the upper left of the CONSTANT
PENETRATION key) lights up. When setting the CONSTANT PENETRATION function to
OFF, the CONSTANT PENETRATION lamp goes out. Set the CONSTANT
PENETRATION function to ON to hold constant penetration depth by using the
CONSTANT PENETRATION key [15]. The CONSTANT PENETRATION function is
activated only during the INITIAL and MAIN welding times. It does not function during the
CRATER time.
NOTE: The CONSTANT PENETRATION function is not available in the combination
of the following welding conditions, and the CONSTANT PENETRATION function is
automatically set to “OFF”.
x
SPOT TIME “ON” setting
x
Selection of AL/PURE (SOFT) or AL/MG (HARD).
10.1.7 Arc Characteristics Function
When pressing the ARC CONTROL key [9] while the INITIAL CONDITION, MAIN
CONDITION, or CRATER-FILL CONDITION is selected the ARC CONTROL lamp (located
at the upper left of the ARC CONTROL key [9]) lights up, the setting value is displayed in the
right display, and the V/r lamp lights up. At that condition, it is possible to set arc
characteristics by using the parameter adjusting knob [6]. The setting range is 0 to r10.
Pressing the ARC CONTROL key [9] again or pressing the DISPLAY CHANGE key [8]
returns to the previous parameter setting. In addition, it is also possible to change over the
display to a current-related parameter by using the A/m/min selector key [3] and to a voltage-
related parameter by using the V/r selector key [4].
The standard setting value of arc characteristic is 0. As the setting value of the arc
characteristic is set in the negative direction (up to -10), arc condition becomes harder. As
the setting value of the arc characteristic is set in the positive direction, arc condition
becomes softer (up to 10). When you use the welding power source in the low current range,
set the setting value of the arc characteristic in the positive direction to obtain good welding
results. When you use the welding machine in the high current range, set the setting value of
the arc characteristic in the positive direction to obtain good welding results. If you can not
obtain optimum arc condition due to use of the extension cables, set the setting value of the
arc characteristic in the negative direction.
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