Figure 4: System 450 Control Module Output Analog LEDs,
LCD, four-button touchpad UI
Table 2: System 450 Control Module Output Analog
LEDs, LCD, four-button touchpad UI
Callout Feature Description
1 Status or
setup value
Displays the current input status, output
status, or setup parameter value for the
displayed input sensor, output, or setup
parameter. Press Down or Up to select
a different parameter value when the
value is flashing. Here, 100 = 100%.
2 LED Green LEDs on Analog Control Module
and Analog Expansion Modules (only)
indicate the analog output’s signal
strength. When the analog output
signal is between 0 and 10 VDC, the LED
blinks. The higher the output signal
strength, the longer the LED is on. The
LED is off when the analog output is not
generating a signal.
3 Output
number
Displays a numerical value that
identifies the output associated with
the status or setup value shown on
the screen. Output numbers are
automatically determined by the
outputs' physical positions (left to
right) in the module assembly. Here,
4 = Output 4.
4 Control
ramp icon
Displays whether an analog output
(only) is set as direct-acting or reverse
acting, and whether the output signal
strength is at minimum or maximum
when the sensed property is at Setpoint.
The control ramp icon displayed is
determined by the output's SP, EP, OSP,
and OEP setup values.
Table 2: System 450 Control Module Output Analog
LEDs, LCD, four-button touchpad UI
Callout Feature Description
5 Next button In the Main screens, press Next to scroll
through the system status screens. In
a setup screen, press Next to save the
flashing setup value and go to the next
setup screen.
6 Up and
Down
buttons
Press Up or Down to select a different
value for any flashing value in the setup
value field. In the Main sensor status
screens, press and hold both Up and
Down for 5 seconds to access the setup
Start screens.
7 Menu
button
Press M to move through the sensor
and output setup start screens. When
moving through the status or setup
screens, press M to return to the status
start screen or setup start screen.
8 Status
or setup
identifier
Displays the unit of measurement,
output, sensor number, or setup
parameter for the displayed status or
setup value. Here, the setup identifier
OSP represents % output signal
strength at setpoint.
9 LCD Backlit LCD screen. The LCD brightness
is adjustable. During normal operation,
the LCD displays the Main screens.
Viewing the Startup, Main, and System
Status screens
Every time you connect power to a System 450 control
module, the Startup screen appears for several seconds
before the Main screens appear. The Startup screen
displays the current firmware version for the module.
After you install, wire, power on, and set up your control
system in the UI, the Main screens appear on the LCD,
immediately after the Startup screen. During normal
operation, the Main screens automatically scroll through
the current status of each sensor in your control system
and the backlight low level setting is applied.
The System Status screens display the current status of
each input and output in your control system. With the
Main screen displayed, press any key to exit idle mode,
then press Next repeatedly to scroll through and view all
of the status screens in your control system.
When you power on a System 450 control module, the
LCD displays the control module’s current firmware
version for approximately five seconds before it displays
the Main (Input Status) screen. The following figure
shows System 450 firmware version number 4.00 on
the top of the screen. The number on the bottom of the
screen (indicated in this example with xxxx) identifies the
Johnson Controls firmware.
Figure 5: Startup screen
System 450 Series Control Modules with Analog Outputs Installation Guide 5
