8. Various settings
WMD078TE0PAA07
88
Low pulse setting (20)
Low pulse welding is to create ripples of the
bead specific to the low pulse welding by
bringing the level of Condition B part lower
than the level of Condition A part periodically.
The setting is not applicable in “2. Automatic”
setting as the low pulse delay time becomes
zero (0).
Low pulse level: Current/Voltage (21 and 22)
Condition A becomes the normal pulse condi-
tion.
Condition B is ignored if the LOW PULSE SET is
set to “0 (Invalid)”.
Note
The lower the level is, the more frequently the
specific ripple of the bead is created. Then,
short circuit occurs in Condition B part more
frequently.
Low pulse level: Voltage (22)
Before entering DETAIL mode,
•
if UNITARY indication is selected, the unitary
voltage of low pulse current is indicated.
• if difference UNITARY (±V) is selected, the
voltage different from the UNITARY is indi-
cated.
•
if INDIVIDUAL is selected, the INDIVIDUAL
voltage is inidcated.
Low pulse frequency (23)
The higher the frequency is, the shorter the
distance between the specific ripples.
Low pulse A-B ratio (24)
In low pulse, set the ratio of width of Condi-
tion A to the sum of the widths of Conditions
A and B.
•
Then, the width (%) of Condition B is
[100 - Ratio of width of Condition A] (%)
•
The figure on the right shows the LOW
PULSE DUTY at default setting (50 %):
That is, both Conditions are the same
width (ratio) (50:50 (%)).
Low pulse delay time (25)
Adjust to (+) direction delays the time to start
low pulse. Take into account the welding
speed and set it so as to start low pulse weld-
ing from the desired point.
<Low pulse setting>
<Low pulse level: Current/Voltage>
<Low pulse frequency>
<Low pulse A-B ratio>
<Low pulse delay time>
* (
) is the simplified form of the pulse cur-
rent waveform (
).
Condition A
Condition B
Condition A Condition B
Low pulse frequency
Condition A
Condition B
Condition A Condition B
Delay time
Welding
Start point
