Accessing Control Panel Menu: Ac Tig - Miller Dynasty 280 Series Owner's Manual

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Accessing Control Panel Menu: AC TIG

3-2. Accessing Control Panel Menu: AC TIG
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1
AC AV
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Parameter/Setting Display
[BAL] [75%]
Parameter/Setting Display
[FREQ] [120H]
OM-270536 Page 17
Parameter/Setting Display
[POST] [AUTO]
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Complete Parts List is available at www.MillerWelds.com
A complete Parts List is available at www.MillerWelds.com
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Balance Control* (%EN)
Description
Controls oxide cleaning.
Increasing setting reduces oxide cleaning. Range is 60% to 80%.
TIP: AC Balance controls the cleaning action. If floating black spots appear in the puddle, the balance set-
ting is too high. Turn the balance down until puddle becomes clear.
Frequency Control*
Description
Increasing setting narrows arc width. Range is 70 to 150 Hertz.
TIP: AC Frequency controls the width of the arc cone. For thin fillet welds (less than 1/4 in.) set the fre-
quency to 120 Hz. This frequency setting provides a focused stable arc and produces a narrow weld. For
outside corner or groove welds on heavy material, a wide weld may be required. Lower the frequency to
between 70 and 100 Hz. This frequency setting produces a wider weld.
Post Flow Control
Description
Controls the length of time gas flows after welding stops. Range is AUTO, OFF - 50T (seconds). AUTO
calculates the time based on the maximum amperage of each welding cycle. The minimum time is 8 sec-
onds. Auto = maximum amperage/10.
1
1 Menu Button
Press Menu button to cycle through parame-
ters that can be set.
2 Parameter Display
3 Setting Display
4 Amperage Adjustment Control
Rotate Amperage Adjustment control to ad-
just parameter setting.
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Amperage Control
Controls the average AC welding amperage
output. Limits the maximum output of a re-
mote amperage device.
In AC, the user will be setting the rectified
average value of the AC current, ([AC AV] will
be displayed).
*PRO-SET provides PROfessionally devel-
oped SETtings for the weld process. To use
PRO-SET, press the menu button to display
the parameter and adjust the amperage ad-
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justment control until PRO-SET flashes on
the display. PRO-SET flashes one time and
reveals the professional setting for the
parameter.
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Parameter automatically returns to am-
perage setting 15 seconds after Amper-
age Adjustment control is inactive.
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