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10. OPERATION (continued)
(8) Result display holding time setup: Function No. “9” ---- X
After completion of welding, the mean value of output current during last 1-sec. period is displayed
by flashing for approx. 20 sec., but this time can be set up with Function No. “9”. The setup range
is 0 to 60 sec.
(9) AC Ratio Adjustment: Function No. “10”
---- O
The AC ratio is factory preset to 70% before shipment. The adjustment of AC ratio can be set up
with Function No. “10”. At this time, the set point is indicated on the left-side digital meter, and the
“%” LED lights up.
The AC ratio is set up in the range from 10% to 90%.
(10) Operating sound switching: Function No. “11”
---- X
By turning Function No. “11” OFF, the operating sound or noise arising when the panel key is
manipulated can be arrested. However, no operating sound volume can be controlled.
(11) External output terminal 1 switching: Function No. “12”
---- X
External output terminal 2 switching: Function No. “13”
---- X
The assignment of external output terminal 1 and that of external output terminal 2 can be
changed with Function No. “12” and Function No. “13” respectively.
The relationship between the function to be assigned and the number to be set up is as described
in the table below:
Setting No.
Description
Function
1
Power source preparations
It works as for power source preparation relay.
It operations when there is no abnormality, such
as lucking, operation stop, temperature error
and when the power source switch is on.
Function No.12 is factory setting.
2
Pulse synchronizing output
When the pulse is “ON”, the section across
terminals is closed.
Function No.13 is factory setting.
3
EN synchronizing output
In AC TIG welding, the circuit is closed between
terminals during EN period (the electrode is
minus.)
4
AC synchronizing output
In AD-DC TIG welding, the circuit is closed
between terminals during AC period.
(12) Pulse synchronizing input signal switching: Function No. “14” ---- x
By turning Function No. 14 “ON”, the pulse current and base current can be changed over by
inputting external signals into the pulse synchronizing input terminal. At this time, the panel pulse
must be set to “ON”. Also, the panel pulse frequency setting becomes impossible.
Closed circuiting across terminals produces pulse current and open circuit produces base current.
CAUTION:
Even when the pulse synchronizing input terminal is closed during initial current and
crater current period, no pulse output is produced.
Only when the input signal level was held at least 2 ms, the status can be switched.
(13) AC balance display change-over: Function No. “15” ---- x
By turning Function No. 15 “ON”, the value indicated on the digital meter can be used as EP ratio
in AC balance setup, and the “%” LED is also lit on the unit LED. Further, on the left-side digital
meter, the standard value is displayed by flashing.