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10. OPERATION (continued)
㧔
6
㧕
Pulse frequency
This parameter may be selected only if the pulse setting is “ON”. When this parameter is
selected, the set value appears on the right digital display with the unit indicator LED for
“hertz (Hz) ” turned ON. In this state, the pulse frequency may be adjusted in the range
between 0.1 and 500 Hz by the use of the parameter adjusting knob [4].
㧔
7
㧕
Down slope time
This parameter may be selected only if the crater setting is “ON”, “REPEAT” or “ARC
SPOT” and the slope setting is “ON”. When this parameter is selected, the set value
appears on the right digital display with the unit indicator LED for “sec. (sec) ” turned ON. In
this state, the down slope time may be adjusted in the range between 0 and 10 sec. by the
use of the parameter adjusting knob [4].
㧔
8
㧕
Crater current
This parameter may be selected only if the crater setting is “ON”, “ON (REPEAT)” or “ARC
SPOT”. When this parameter is selected, the set value appears on the left digital display
with the unit indicator LED for “ampere (A) ” turned ON. In this state, the crater current may
be adjusted in the range as specified in the table below by the use of the parameter
adjusting knob [4].
㧔
9
㧕
Post flow time
When the parameter “post flow time” is selected, the set value appears on the right digital
display with the unit indicator LED for “sec. (sec)” turned ON. In this state, the post flow
time may be adjusted in the range between 0 and 30 sec. by the use of the parameter
adjusting knob [4].
For suitable electrode diameter and post-flow time, see Section 9.4, “TIG Welding
Condition”.
٨
Setting Current range
Welding
method
AC wave form
DA-300P
Output Current Setting Range
DC TIG
4A - 300A
AC TIG
AC-DC TIG
STANDARD
HARD
10A - 300A
SOFT
10A - 200A