Miller Electric S-74DX - Manual (Page 27)

OM-1500-9 Page 23
Reset To Factory Settings
A reset menu is displayed if the following four
push buttons are pressed simultaneously:
Program, Sequence, upper display, and Set-
up. The upper display indicates “WIPE” . The
lower display indicates “OFF”. The lower push
button is active indicating that the Adjust con-
trol can be used to change the unit to “WIPE
ON”. When “WIPE ON” is set, if the original
four push buttons are simultaneously pressed
a second time, the unit will reset all settings to
factory default except the arc time and arc
cycle counts. If a reset is not desired, set the
display to “WIPE OFF” and simultaneously
press the Program, Sequence, upper display,
and Setup push buttons to exit the reset menu.
Auxiliary Menu
• An auxiliary menu is provided if both the Se-
quence and Setup push buttons are pressed
simultaneously. The Setup push button and
sequence push button LEDS flash when the
auxiliary menu is displayed.
Pushing the Setup push button will step
through the menu. Pushing the sequence
push button will step through the menu in re-
verse.
.
The auxiliary menu may be exited at any
time by pressing both the Sequence push
button and the Setup push buttons simul-
taneously.
V-Min And V-Max
• If the Setup push button is pressed, the unit
allows the setting of the manual override
power source min and max voltage preset
range. The minimum voltage is displayed in
the upper display and the lower display indi-
cates “VMIN”. When the Setup push button
is pressed the unit displays the maximum
voltage setting of the welding power source.
The maximum voltage is displayed in the up-
per display and the lower display indicates
“VMAX”.
In both cases, the Adjust control is used to
specify the minimum and maximum voltage
settings of the welding power source. The set-
tings correspond to arc voltage obtained at
minimum command and arc voltage obtained
at maximum command.
This method of setting “VMIN” and “VMAX”
may be used if the power source being used
is not listed in the Power Source Selection
Menu.
.
If a default power source has already been
selected with the Power Source Selection
menu, setting “VMIN” and “VMAX” will
override the default power source set-
tings.
.
The power source selection menu must
be set to “OFF” when overriding the de-
fault “VMIN” or “VMAX” settings.
Power Source Selection Menu
• If the Setup push button is pressed, the unit
allows the Power Source Selection menu to
be disabled or enabled.
The upper display shows “PSS”. Lower dis-
play shows “On” or “Off”. The Adjust Control is
used to select either “On” or “Off”.
Arc Time
• If the Setup push button is pressed, the unit
displays arc time in hours.
Arc time is indicated by the Program display
showing “HR”. Arc time is shown in the lower
display.
Cycles
• If the Setup push button is pressed, the unit
displays the number of cycles.
Arc cycles are indicated by the Program dis-
play showing “CL”. The arc cycle count is
shown in the lower display.
Run-In
• If the Setup button is pressed, the unit allows
setting the run-in modes. The run-in modes
are program specific. Each program may be
set to its own run-in mode.
The upper display indicates “RUNI”. The
lower display indicates “AUTO”, meaning the
factory set automatic run-in speed is se-
lected.
Pressing the lower display button allows a
manual setting the run-in wire speed. Speed
may be adjusted from 10% to 100% of weld
wire speed.
Pressing the lower display button allows dis-
abling of the run-in feature. When the lower
display indicates “OFF” run-in is disabled.
Burnback
• If the Setup push button is pressed, the unit
allows burnback time to be set.
Burnback time and voltage can be specified
when the lower display indicates “BURN” and
the upper display indicates the burnback time
or voltage. The Adjust control is used to set the
desired burnback time or voltage. Burnback
settings, like run-in settings, are program spe-
cific. The active program is displayed in the
Program display and can be adjusted (see
Section 6-3).
Trigger Hold Setup
• If the Setup push button is pressed, the unit
allows trigger hold delay time to be set.
Trigger hold delay time is indicated by ”HOLD”
in the lower display and the hold delay time in
the upper display. The adjust control can be
used to specify a new delay time for trigger
hold. Trigger hold delay time is the minimum
amount of time the trigger must be held for trig-
ger hold to work when the trigger is released
(the trigger hold function must be on). For ex-
ample, if a trigger hold delay time of 2.0 sec-
onds is defined, the operator must hold the
trigger for at least 2 seconds before releasing
it in order for the trigger hold function to work.
Once the trigger hold function is in effect, the
wire feeder will stay On until the trigger is
pressed and released again.
• There is an additional function built in called
”maximum trigger hold time” which is the
maximum length of time the trigger can be
held and the trigger hold function still work
when the trigger is released (the trigger hold
function must be on). The maximum trigger
hold time is set at 4.0 seconds after the trig-
ger hold delay time. For example, if a trigger
hold delay time of 2.0 seconds is defined,
and the operator held the trigger in for more
than 6.0 seconds, the trigger hold function
would not be in effect and the wire feeder
would stop when the trigger is released.
• When the Setup push button is pressed
again, the menu repeats to the first menu
selection of run-in wire speed selection.
Trigger Program Select
• If the Setup push button is pressed, the unit
allows Trigger Program Select to be dis-
abled or enabled.
The upper display shows “TSEL”. Lower dis-
play shows “On” or “Off”. The Adjust Control is
used to select either “On” or “Off”.
Trigger Program Select allows the operator to
select programs by clicking the trigger (pulling
and releasing the trigger in a maximum of 0.2
seconds). The feeder will switch between any
programs that have a minimum of 0.2 seconds
of preflow time set in the weld sequence. If pro-
grams 1 and 3 have a minimum of 0.2 seconds
of preflow time, clicking the trigger will toggle
between programs 1 and 3. If programs 1, 2,
and 4 have a minimum of 0.2 seconds of pre-
flow time, clicking the trigger will switch from 1
to 2 to 4 to 1 to 2. Any combination of programs
may be used. Trigger Program Select cannot
be used while welding or with Dual Schedule.
Process Select
Process selection indicated by ”PROS” in the
upper display is set to either ”VOLT” or ”TRIM”
in the lower display. Each program can be se-
lected be be a MIG program indicated by
”VOLT” or a pulsing program indicated by
”TRIM”.
Range Locks
Range locks are indicated by “LOCK” in the
upper display for wire speed or “LOCK” in the
lower display for voltage range. In a MIG pro-
gram, the voltage range lock ranges from 0 to
10 volts. In a pulse program, the trim range
lock ranges from 0 to 100. The wire feed speed
range lock ranges from 0 to 250 ipm. Locks are
program dependent and wire speed is inde-
pendent from voltage or trim.
Wire Feed Speed Units
Wire feed speed setting indicated by “WFS” in
the upper display is set to “IPM” inches−per−
minute or ”MPM” meters−per−minute. This
setting is independent of the program se-
lected.
OPT1
• If the Setup push button is pressed, the unit
allows OPT1 to be disabled or enabled.
The upper display shows “OPT1”. Lower dis-
play shows “On” or “Off”. The Adjust Control is
used to select either “On” or “Off”.
“OPT1” is used by the Water Flow Shutdown
Option to stop the weld sequence if water flow
to a water cooled gun is interrupted. A closed
set of contacts between pins 1 and 2 of RC26
on Interface Board (PC20) will allow feeder to
operate normally. Opening the contacts will
stop the weld sequence and display “ERR” in
the upper display and “OPT1” in the lower dis-
play.
6-10 Auxiliary Menus (Continued)