Miller Electric D-74DX Owner's Manual page 32

6-12 Auxiliary Menus (Continued)
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.
OPT2
If the Setup push button is pressed, the unit
allows OPT2 to be disabled or enabled.
The upper display shows "OPT2". Lower dis-
play shows "On" or "Off". The Adjust Control
is used to select either "On" or "Off".
"OPT2" is a second input that may be used
with an external device, such as a gas flow
switch, to end the weld sequence. The gas
flow switch may be used to stop the weld se-
Notes
OM-1500-7 Page 28
quence if shielding gas flow to the gun is inter-
rupted. A closed set of contacts between pins
1 and 2 of RC24 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
"OPT2" in the lower display.
Display Hold
Display hold indicated by "DISP" in the upper
display is set to "OFF" or "HOLD" in the lower
display. When "HOLD" is selected, the unit will
hold the last weld information for 5 seconds
following weld termination. If any front panel
push button is pressed, or if the Adjust control
is activated, the display hold feature is termi-
nated.
Software Revision Level
If the Setup push button is pressed, the unit
displays the software version being used by
the interface PCB (PC20).
When the Setup button is pressed again, the
menu repeats.
Code
Upon leaving the auxiliary menu, the user is
asked if a password code indicated by
"CODE" in the top display should be activated.
By default the code is off, indicated by "OFF"
in the lower display. The user may enter a nu-
merical password between 0 and 999 by turn-
ing the Adjust control. When the user re−en-
ters the auxiliary menu, the password code
must be selected to gain access to the auxilia-
ry menu. A failed attempt return the user to the
weld screen and a counter is incremented. A
counter in the program display shows the
number of incorrect attempts. The user has
five attempts to enter the correct password
code before being locked out of the auxiliary
menu, indicated by "LOCK" in the lower dis-
play . The power may be cycled to continue
welding but the user will remained locked out
of the auxiliary menu. Pressing the Program,
Sequence, upper display, and Set−up push
buttons simultaneously, the counter can be re-
set in the weld screen. Resetting the counter
is indicated by "CODE" in the upper display
and "RSET" in the lower display. Pressing the
Program, Sequence, upper display, and Set−
up push buttons simultaneously again will al-
low the user to reset the unit to the factory de-
faults, indicated by "WIPE" in the upper dis-
play. Resetting the unit will also turn off the
password code feature.