No. P30051
―41―
10. OPERATION (continued)
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/
±
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
±
10. 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/
±
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.
10.1.8
WAVE PULSE Function (optional)
In wave pulse welding, the ripple bead appearance is changed by applying two separate
pulses cyclically at low frequency. This feature will also assist in welding joints that have
some poor fit up or gaps. Although, the wave mode is usually most applicable for fully
automatic welding, benefits are also achieved even in semi-automatic applications. Good
bead appearances are obtained by setting the wave frequency to 5Hz or more even for
semi-automatic.
When setting wave pulse frequency, select “DC WAVE PULSE” with the WELDING
METHOD key [1]. Normally, the WELDING METHOD key does not work during pulse
welding or no-pulse welding. When the WAVE PULSE key is pressed while “INITIAL
CONDITION”/ “MAIN CONDITION”/ “CRATER-FILL. CONDITION” is selected, the
WAVE PULSE lamp (located at the upper left of the WAVE PULSE key) lights up, the
setting value appears in the left display, the “Hz” LED lamp lights up. Under these
conditions, wave pulse frequency can be adjusted while turning the parameter adjusting
knob. The setting range of wave pulse frequency is 0.5 Hz to 32 Hz. Adjust wave pulse
frequency until you can obtain the desired bead appearance.
When pressing the WAVE PULSE key or DISPLAY CHANGE key again, return to the last
parameter that you have set. When changing the display to a current-related parameter,
press the A/m/min selector key [4]. When changing the display to a volt-related
parameter, press the V/
±
selector key [5].
high frequency
low frequency
NOTE:
•
Wave pattern of the welding bead varies depending on the heat input during
welding.
•
When using annealed wire, bead surface may blacken somewhat if shorting
occurs frequently during the welding operation.
