Ac Independent - Miller Maxstar 400 Owner's Manual

6-4. AC Independent

A. AC Independent Amperage
4
EN
EP
1
B. AC Independent Waveshape
3 4
USER
ACEN
ACEP
.
A complete Parts List is available at www.MillerWelds.com
3
150 A
150 A
2
5 1
MENU
2
SOFT
SOFT
.
AC Independent Expansion is available on
DX models with SD expansion card and on
CE models with feature enable through the
user menu (see Section 6-3).
1 AC Waveshape Control
Press switch pad until desired function is selected.
2 Encoder Control (Set Value)
3 Ammeter (Displays Value)
4 Voltmeter (Parameter Selection)
EN Amperage [EN] - Use with AC TIG only to se-
lect electrode negative amperage value.
EP Amperage [EP] - Use with AC TIG only to select
electrode positive amperage value.
5
5 Amperage Button
Average Amperage Control - Setting EN Amper-
age, EP Amperage, Balance, and Frequency val-
ues creates an average amperage. The operator
can change the average amperage value while
maintaining the same EN amperage to EP amper-
age ratio at the existing balance and frequency. To
change the average amperage value, press the
Amperage switch pad and rotate the Encoder con-
trol. The changing average value is displayed on
the ammeter. Example: If EN Amperage is 150, EP
Amperage is 100, Balance is 75%, and Frequency
is 120, the average amperage is 138 amps. If you
press the Amperage switch pad and rotate the En-
coder control until 69 amps is displayed, the EN am-
perage is now 75 and EP amperage is now 50. The
balance remains 75%, and the frequency is still
120, and the 1.5 to 1 EN amperage to EP amperage
ratio is maintained.
.
1
2
3
Press Gas/DIG switch pad until [ACEN] is dis-
played. Press the A switch pad to toggle be-
tween [ACEN] and [ACEP].
4
5
Use Encoder to select between advanced
squarewave
[SOFT], sine wave [SINE], or triangle wave
[TRI]. The default is [SOFT].
See Section 6-3 for additional information
on Accessing User Setup Menu. The
[ACEN], [ACEP] option replaces the [AC]
option.
Amperage (A) Button
Gas/DIG Control
Parameter Display
Setting Display
Encoder Control
[ADVS], soft squarewave
OM-275857 Page 43
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