Jasic JT-200D, Руководство оператора

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When reading the above table, please note:
•
Whether the arc is ignited by HF or by striking the
electrode, and no matter what kind of operation mode is
selected, after arc is ignited successfully, it enters into
initial current, and later into operational mode control.
•
Some operation modes adopt the exit mode by pushing
the torch trigger. The operator should release it after
exiting welding. In this way, another welding operation can
be entered by pushing the torch trigger.
•
Current curves in all operation modes are drawn on the
assumption that the machine works in DC TIG mode. If the
machine works in pulsed TIG mode, the current curve
appears a pulse shape; if the machine works in AC TIG
mode, the current curve appears a variable polarity pulse
shape.
•
Normally, the TIG operation modes most widely used are
2T and 4T, which exactly correspond to operation mode 2
and 4 for this machine respectively.
•
Use the operation mode programming function carefully,
since it can be complicated.
19
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16
Manual pulsed single operation mode:
①
" Push the torch trigger: arc is ignited and current
reaches the preset value.
②
" Release it: current drops to pilot arc current value.
③
" Push it again: current rises to the preset value, and
then turn to
②
.
④
" If push the torch trigger and release it at once, or
release the torch trigger and push it at once, arc will
stop.
Note: Preset value is the peak value; pilot arc value is
the base value. It is programmable.
17
Manual pulsed double operation mode:
①
" Push the torch trigger: arc is ignited and current
reaches the preset value. The torch trigger can be
released at any time.
②
" Push the torch trigger and release it at once:
current drops to pilot arc current value.
③
" Push the torch trigger and release it at once:
current rises to the preset value, and then turn to
②
.
④
" If push the torch trigger twice within 0.5s, the
current will drop gradually, and arc will stop.
Note: Preset value is the peak value; pilot arc value is
the base value. It is programmable.
18
Pulsed welding with fixed frequency (5Hz) and
fixed duty cycle (50%):
①
" Push the torch trigger: arc is ignited and
current reaches the initial value.
②
" Release it: current gradually rises.
③
" Push it again: current drops to pilot arc
current value, and the timing function is
started.
④
" If time is out, do peak-base switch.
⑤
" Release the torch trigger: arc stops.
Note: Preset value is the peak value; pilot arc
value is the base value. It is programmable.
19
Pulsed welding with unfixed frequency (the cycle
is 1/5 of the upslope time) and fixed duty cycle
(50%):
The same with that of mode 18.