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The NXD410 and PPC4000 Control contain a number of Quick Keys that allow the user to access
that function directly. For these Quick Keys to operate the installer or operator must first access the
KEYPAD SETUP menu where the user defines if a Quick Key is used or unused. Quick Keys are
also non-volatile meaning the state of the switch function is retained in memory should a power
recycle occur.
NAVIGATING THROUGH DISPLAY MENUS
The PPC4000 and NXD410 present data to the user through menus and sub-menus. The data and
information is organized in a logical and easy to access manner. The order of items displayed are
arranged to be items most used by the operator and require a minimum of key presses. The UP,
DOWN, NEXT, BACK and HOME keys are used to navigate into and out of these menus. The
MDFY/SAVE key is used to both modify and save the selected parameter.
No
LED
Key Name
Description
1
BURNER
ON/OFF
KEYPAD SETUP required. Used to turn the burner ON or OFF. Typically there
are also other limits in the operating control circuit. The LED indicates the
position of the keypad switch and illuminates when the burner is in the ON
mode. When turning the burner off via this keypad switch the default method
is assured low fire cutoff or move to low fire before OFF.
2
LOW
FIRE
KEYPAD SETUP required. If in modulation mode, move servos to low fire
position (P03). After burner startup, stay in low fire after MTFI. LED will illu-
minate when directed to low fire. Pressing AUTO | MAN will turn this off.
3
LEAD
LAG
Used when SEQUENCING is enabled. If enabled through the sequencing setup
sub-menu, selects PPC4000 Control to be MASTER or SLAVE. The LED illu-
minated indicates the unit is a MASTER. If the SEQUENCING does not provide
for keypad selection then this key has no function.
4
AUTO
MAN
Switch to automatic control (modulation) mode. LED will illuminate when in
manual mode. This can be overridden by LOW FIRE.
5
C-MODE
Go to the Commissioning or Adjust Ratio Mode. LED illuminates when C-
MODE is enabled (after passcode enabled). While in Commissioning Mode or
Adjust Ratio Mode, hitting C-Mode is used to correctly terminate Commis-
sioning and Adjust Ratio Mode.
6
ADJUST
SETPOINT
Directs operator to setpoint currently controlling the burner, SETPOINT1,
SETPOINT2, or SETBACK.
7
RESET
Allows reset of non-volatile lockout. LED illuminates when control is in lock-
out awaiting reset.
8
CHK RUN/
FAULT
Fault History Display
9
MODIFY
SAVE
MDFY: LED illuminates and enters modify mode. UP/DOWN arrows are used
to modify current value. SAVE: Save current parameters/setup, extinguish
LED
10
UP
Move up to the previous menu item. When in MODIFY mode, used to incre-
ment numerical value.
11
DOWN
Move down to the next menu item. When in MODIFY mode, used to decre-
ment numerical value.
12
NEXT
When displayed item contains > symbol, direct user to the next submenu.
Displayed item must be between > < marks on keypad. (Also, when in servo
setup, forces scan for installed servos).
13
BACK
When displayed item contains < symbol, direct user to the previous parent
menu. Displayed item must be between > < marks on keypad.
14
HOME
From anywhere and in any menu or submenu, immediately suspends any
modify mode if enabled and directs user to default or main screen.
15
INFO
Pressing this key will enter INFO mode. Pressing key while in INFO mode, will
exit INFO mode. Useful while in commissioning mode to check values of all
parameters, digital inputs, measured value, etc.
