Penn System 450 Series User manual

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Refer to the QuickLIT website for the most up-to-date version of this document.
System 450™ Series Control Modules with Analog Outputs Installation
Instructions
Application
System 450™ is a family of modular, digital electronic controls that is easily assembled and set up to provide
reliable temperature, pressure, and humidity control for a wide variety of HVACR and commercial and industrial
process applications.
The System 450 control modules allow you to configure custom application-specific control systems with up to
three input sensors and ten (relay, analog, or both) outputs, including control systems that can monitor and control
temperature, pressure, and humidity applications simultaneously.
You can easily install and quickly configure a stand-alone System 450 control module and sensor in the field as a
replacement control for almost any temperature, pressure, and humidity control.
C450CPN-4 and C450CQN-4 models are analog output control modules with LCD and a four-button touchpad user
interface (UI) that allows you to set up a System 450 control system. C450CPN-4 models provide one
self-selecting analog output, and C450CQN-4 models provide two self-selecting analog outputs.
Refer to the System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin
(LIT-12011459) for more detailed information on designing, installing, setting up, and troubleshooting System 450
Series control systems. The System 450 technical bulletin can be accessed and downloaded on the Johnson
Controls® QuickLIT Product Literature website.
IMPORTANT: Use this System 450™ Series Control Module with Analog Outputs only as an operating control.
Where failure or malfunction of the System 450™ could lead to personal injury or property damage to the
controlled equipment or other property, additional precautions must be designed into the control system.
Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls,
intended to warn of or protect against failure or malfunction of the System 450 Module.
IMPORTANT : Utiliser ce System 450™ Series Control Module with Analog Outputs uniquement en tant que
dispositif de contrôle de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du System 450™
risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou un autre équipement, la
conception du système de contrôle doit intégrer des dispositifs de protection supplémentaires. Veiller dans ce
cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou
des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou de protection en cas de
défaillance ou de dysfonctionnement du System 450 Module.
System 450™ Series Control Modules with Analog Outputs
Installation Instructions
C450CPN-4
C450CQN-4
Part No. 24-7664-3191, Rev. B
Issued October 2018

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Installation
Location Considerations
Observe the following System 450 location guidelines:
• Ensure that the mounting surface can support the module assembly, mounting hardware, and any (user-
supplied) panel or enclosure.
• Mount the modules upright and plugged together in a horizontal row where possible (Figure 3). DIN rail
mounting is highly recommended.
• Mount modules on flat, even surfaces.
• Allow sufficient space for wires and connections.
• Mount the modules in locations free of corrosive vapors and observe the ambient operating conditions listed in
the Technical Specifications on page 28.
• Do not mount the modules on surfaces that are prone to vibration or in locations where radio frequency or
electromagnetic emissions may cause interference.
• Do not install the modules in airtight enclosures.
• Do not install heat-generating devices in an enclosure with the modules that may cause the temperature to
exceed the ambient operating limit.
Mounting
Mount System 450 modules on 35 mm DIN rail (recommended) or directly onto an even wall surface. To mount
modules on DIN rail:
1. Provide a section of 35 mm DIN rail that is longer than the module assembly width, and mount the DIN rail
horizontally in a suitable location using appropriate mounting hardware/fasteners.
2. Clip the control module on the rail, position the upper DIN rail clips on the top rail, and gently snap the lower
clips onto the rail.
Figure 1: System 450 Module Dimensions, mm (in.)

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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3. Clip the remaining power and expansion modules to the right of the control module on to the DIN rail and plug
the 6-pin module connectors together (Figure 3).
Notes:
• DIN rail end clamps can be used to prevent the module assembly from sliding off the DIN rail.
• If your System 450 control system uses a power module, the power module must be plugged into the right-
hand side of the control module.
To direct-mount modules to wall surfaces:
1. Plug the modules together, remove the module covers, place the assembly against wall surface horizontally in
a suitable location, and mark the mount hole locations on the surface (Figure 1).
2. Install appropriate screw fasteners, leaving screw heads approximately one to two turns away from flush to the
surface.
3. Place the assembly over screw heads on the mounting slots, and carefully tighten the mounting screws.
Note: If you mount the modules on an uneven surface, do not damage the housings when tightening
mounting screws. Use shims or washers to mount the module assembly evenly on the surface.
Refer to the control sensor installation instructions for information on locating and mounting control sensors.
Wiring
See Figure 2 and Table 1 for electrical termination locations and wiring information. See Technical Specifications
on page 28 for electrical ratings.
Risk of Electric Shock.
Disconnect or isolate all power supplies before making electrical connections. More than one disconnection or
isolation may be required to completely de-energize equipment. Contact with components carrying hazardous
voltage can cause electric shock and may result in severe personal injury or death.
Risque de décharge électrique.
Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs isolations et
débranchements sont peut-être nécessaires pour -couper entièrement l'alimentation de l'équipement. Tout contact
avec des composants conducteurs de tensions dangereuses risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
IMPORTANT: Use copper conductors only. Make all wiring connections in accordance with local, national, and
regional regulations.
IMPORTANT: Do not exceed the System 450 module electrical ratings. Exceeding module electrical ratings
can result in permanent damage to the modules and void any warranty.
IMPORTANT: Run all low-voltage wiring and cables separate from all high-voltage wiring. Shielded cable is
strongly recommended for input (sensor) and analog output cables that are exposed to high electromagnetic or
radio frequency noise.
IMPORTANT: Electrostatic discharge can damage System 450 modules. Use proper Electrostatic Discharge
(ESD) precautions during installation and servicing to avoid damaging System 450 modules.

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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IMPORTANT: Do not apply power to a C450Y Power Module or the 24 VAC/VDC power source for the System
450 modules before finishing wiring and checking all wiring connections. Short circuits or improperly connected
wires can result in damage to the modules and void any warranty.
IMPORTANT: A System 450 control module and module assembly can be connected to an internal power
source (a System 450 power module) or an external power source (24 VAC/VDC power connected to the 24 V
and COM terminals on the control module), but must not be connected to both power sources simultaneously.
Connecting a control module to both internal and external power sources can damage the modules and void any
warranty.
IMPORTANT: When connecting System 450 compatible sensors with shielded cable to a
System 450 control module, connect the cable shield drain lead to one of the C (common) terminals on the input
sensor terminal block. Do not connect the shield at any other point along the cable. Isolate and insulate the
shield drain at the sensor end of the cable. Connecting a cable shield at more than one point can enable
transient currents to flow through the sensor cable shield, which can cause erratic control operation.
Table 1: System 450 Analog Output Control Module Terminal Wiring Information
Label Terminal Function Wire Sizes
24V Accepts 24 VAC/VDC supply power when a C450YNN power module is not
connected, and provides a power terminal for 24 VAC/VDC (humidity) sensors. 0.08 mm2to 1.5 mm2
28 AWG to 16 AWG
5V Provides 5 VDC power for active sensors.
Sn-1, Sn-2,
Sn-3
Accepts passive or active (0–5 VDC) input signals from control sensors. The
control automatically selects a passive or active sensor circuit for each input based
on the sensors selected in the setup screens.
COM Provides a connection for the 24 VAC/VDC supply common input.
C
(Two
Terminals)
Provides low-voltage circuit Common (C) connections for passive or active sensors
connected to the 5V, Sn1, Sn2, and Sn3 terminals.
Note: The three Cterminals are connected internally.
AO1,
AO2
Provides a self-detecting analog output signal in conjunction with the C terminal;
either 0–10 VDC or 4–20 mA. 0.08 mm2to 2.5 mm2
28 AWG to 14 AWG
CProvides a low voltage circuit Common (C) path for the analog outputs (AO1 and
AO2)
Figure 2: C450CxN-4 Wiring Terminals

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Setup and Adjustments
System 450 Component Requirements
A System 450 control system consists of one control module, one to three control sensor inputs, and one to ten
outputs that provide On/Off control or analog control. Figure 3 shows an example System 450 module assembly
with two sensors and three outputs (two analog outputs and one relay output).
Setting Up a System 450 Module Assembly
1. Determine the controlled conditions, sensor types, and value ranges that are required for your application, and
select the appropriate System 450 sensor types.
2. Determine the number and type (relay or analog) of outputs required to control your application, and select the
appropriate System 450 control module and expansion modules to provide the outputs.
3. Assemble the control and expansion modules in the proper order, starting with the control module on the left.
Notes:
• If you use a C450YNN-1 power module, it must be plugged into the control module. Plug in any expansion
modules (for your control system) to the right of the power module.
• After you power on your module assembly, you can set up your control system in the control module UI before
wiring the sensors or outputs to your assembly. If the sensors are set up in the UI but not connected, the LCD
displays a SNF Sensor Failure.
Setting Up a Control System in the User Interface
System 450 control modules have a backlit LCD and a four-button touchpad UI (Figure 4 and Table 2) that enable
you to set up your control system. To set up a control system in the System 450 UI:
1. Build your control system module assembly and connect it to power. See Setting Up a System 450 Module
Assembly.
Figure 3: System 450 Cooling Control System with Condenser Fan Speed Control Example

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Note: Every time a module assembly is powered ON, the control module polls all of the modules to identify
output type (relay or analog) and assigns a sequential output number (1 to 9 [0 = 10]) to each output starting
with the control module output on the left. The output numbers identify each output’s setup screens in the UI.
(See Figure 4 and Table 2.)
2. Access the System 450 setup screens in the UI. See Accessing the System 450 Setup Start Screens on page
9.
3. Set up the control system inputs or sensors in the UI. See Setting Up System 450 Sensors on page 9.
4. Set up the control system outputs in the UI. See Setting Up System 450 Outputs on page 15.
IMPORTANT: Do not change the module positions after a System 450 control system is set up in the UI. System
450 control logic is set up in the UI according to the Sensor Types, the output types, and the output numbers.
Changing modules or module positions in a module assembly that is already set up in the UI can change the
output numbers, output types, and the setup values of the assembly outputs, which requires setting up the
outputs again.
Figure 4: System 450 Control Module Output Analog LEDs, LCD, Four-Button Touchpad User Interface

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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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. See
Table 3 and System 450 Firmware Versions for more information.
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. See Table 3 for
more information.
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 repeatedly to scroll through and view all of
the status screens in your control system. See Table 3 for more information about the System Status screens.
System 450 Firmware Versions
The System 450 firmware versions identify the control features that are available. Standard System 450 control
modules with Version 2.00 firmware and later include the High Input-Signal Selection and Differential Control
features. See High Input-Signal Selection on page 13 and Differential Control on page 14 for more information.
Table 2: System 450 Control Module Output Analog LEDs, LCD, Four-Button Touchpad User Interface
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 or 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.
5 Next Button In the Main screens, press to scroll through the system status screens. In a setup
screen, press to save the (flashing) setup value and go to the next setup screen.
6 Up and Down Buttons Press or to select a different value for any flashing value in the setup value field.
In the Main (sensor status) screens, press and hold both and for 5 seconds to
access the setup Start screens.
7 Menu Button Press to move through the sensor and output setup start screens. When moving
through the status or setup screens, press 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.
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System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Table 3: System 450 Startup Screen, Main Screens, Status Screens, and Setup Start Screens Information
and Procedures
LCD Screen Name, Description/Function, User Action, and Example
Startup Screen: 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 screen example 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.
Main (Input Status) Screens: During normal operation, the Main screens automatically scroll through the
current status of each input sensor in your control system and display the sensor number, the unit of
measurement, and the sensed condition value.
Main screens are view-only; selections are not made in Main screens. The Main screens are the
System 450 default screens. After 2 minutes of inactivity in any screen, the UI returns to the Main
screens.
While the Main screens are scrolling, you can press any key to exit idle mode, then press
repeatedly to scroll through and view the System Status screens for all inputs and outputs in your
control system.
While the Main Screens are scrolling, you can press any key to exit idle mode, then press and hold
and for 5 seconds to access your control system’s Setup Start screens.
The top two screen examples show Sensor 1 sensing 70°F and Sensor 2 sensing 74°F. The third screen
example shows a Temperature Differential Sensor that is sensing a -4 degree differential. The bottom
screen shows Sensor 3 set up as a Binary Input and the input is open.
System Status Screens: The System Status screens display the current status of all inputs and outputs in
your control system. System Status screens are view-only; selections are not made in Status screens.
Relay output status screens display output number and relay status (On/Off). Analog output status screens
display output number, signal strength, and control ramp icon.
Press repeatedly to scroll and view the System Status screens for the inputs and outputs in your
control system. When you stop pressing ,the displayed Status screen refreshes its value and
remains displayed for 2 minutes before returning to the Main Screens.
The screen examples show that the Output 1 relay is On and the signal strength of Output 3 is 61% of the
total signal strength. The control ramp icon in the bottom screen example indicates that the Analog Output
is set up with SP<EP and OSP<OEP. See Setting Up an Analog Output for information about ramp icons.
Setup Start Screens: Setup Start screens are view-only screens from which you can access the setup
screens for the sensors, the displayed output, or the backlight brightness. The Sensor Setup Start screen is
the first screen displayed when you access the System 450 setup screens.
Note: The numerical order and type of Output Setup Start screens are determined by the modules that are
selected for your System 450 control system and their physical order in the control system module
assembly. See Setting Up a Control System in the User Interface on page 5 for more information.
From the Sensor Setup Start screen, press repeatedly to scroll through the Output Setup Start
screens for all of the outputs in your control system. When a Setup Start screen is displayed,
press to go to the setup screens for the sensors or the output displayed in the screen.
Note: In any Setup Start screen, you can return to the Main screens by pressing both and
simultaneously. Also, the UI returns to the Main screen after 2 minutes of inactivity in any screen.
The screen examples show the Sensor, Relay Output 1, Analog Output 3, and LCD Backlight
Brightness Setup Start screens.
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System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Accessing the System 450 Setup Start Screens
Access the System 450 Setup Start screens from the Main screen. See Table 3 for more information about the
Setup Start screens.
To access the System 450 setup screens:
1. Power on the module assembly. After the Startup screen appears briefly (displaying the control module
firmware version), the Main screen appears on the LCD.
2. With the Main screen displayed, press any key to exit idle mode, then press and hold and simultaneously
for 5 seconds to access the setup screens and go to the Sensor Setup Start screen.
3. Press repeatedly to scroll through the Output Setup Start screens. See Figure 6.
Note: The UI returns to the Main screens after 2 minutes of inactivity in any screen in the UI.
Setting Up System 450 Sensors
You must set up the input sensors for your control system before you can set up any outputs. To set up the input
sensors you must access the setup screens.
The Sensor Setup Start screen is the first screen displayed when you access the system setup screens.
Table 4 provides information about System 450 sensors, Sensor Types, parameter values, and specified sensor or
transducer product code numbers. Table 5 provides sensor setup information, procedures, and example screens.
Figure 6 on page 26 provides a System 450 UI setup example.
Table 4: System 450 Sensor Types, Setup Values, and Sensor or Transducer Product Codes (Part 1 of 2)
Sensor
Type
Unit of Measurement
Code
(Condition/Units)
Effective
Sensing
Range
Range of
Usable
Values1
Resolution
Increment
Value
Minimum
Proportional
or Control
Band
Sensor Product
Type Number2
FF (Temperature/degrees) -46 to 255 -40 to 250 1 1 A99x-xxx
CC (Temperature/degrees) -43 to 124 -40 to 121 0.5 0.5 A99x-xxx
rH % (Humidity/%RH) 1 to 100 10 to 95 1 2 HE-67Sx-xxxxx
HE-67Nx-xxxxx
HE-68Nx-0N00WS
P 0.25 INWC (Pressure/in. W.C.) -0.250 to
0.250
-0.225 to
0.250
0.005 0.01 DPT2650-R25B-AB
P 0.5 INWC (Pressure/in. W.C.) 0 to 0.5 0.025 to 0.5 0.005 0.01 DPT2650-0R5D-AB
P 2.5 INWC (Pressure/in. W.C.) 0 to 2.5 0.1 to 2.5 0.02 0.1 DPT2650-2R5D-AB
P 5 INWC (Pressure/in. W.C.) 0 to 5.0 0.25 to 5.0 0.05 0.25 DPT2650-005D-AB
P 8 bAR (Pressure/bar) -1 to 8 -1 to 8 0.05 0.1 P499RCP-401C
P598RCPSN401C
P 10 INWC (Pressure/in. W.C.) 0 to 10 0.5 to 10 0.05 0.2 DPT2650-10D-AB
P 15 bAR (Pressure/bar) -1 to 15 -1 to 15 0.1 0.2 P499RCP-402C
P598RCPSN402C
P 30 bAR (Pressure/bar) 0 to 30 0 to 30 0.1 0.4 P499RCP-404C
P598RCPSN404C
P 50 bAR (Pressure/bar) 0 to 50 0 to 50 0.2 0.4 P499RCP-405C
P598RCPSN405C
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System 450™ Series Control Modules with Analog Outputs Installation Instructions
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P 100 PSI (Pressure/psi) 0 to 100 0 to 100 0.5 1 P499RAP-101C
P499RAP-101K
P499RCP-101C
P499RCP-101K
P598RAPSN101C
P598RAPSN101K
P598RCPSN101C
P598RCPSN101K
P 1103InHg/PSI (Pressure in.Hg/
psi)
-10 to 100 -10 to 100 0.5 1 P499RAPS-100C
P499RAPS-100K
P499RCPS-100C
P499RCPS-100K
P598RAPSN100C
P598RAPSN100K
P598RCPSN100C
P598RCPSN100K
P 200 PSI (Pressure/psi) 0 to 200 0 to 200 1 1 P499RAP-102C
P499RAPS102C
P499RAPS102K
P499RCPS102C
P499RCPS102K
P598RAPSN102C
P598RAPSN102K
P598RCPSN102C
P598RCPSN102K
P 500 PSI (Pressure/psi) 0 to 500 90 to 500 1 5 P499RAP-105C
P499RAP-105K
P499RCP-105C
P499RCP-105K
P598RAPSN105C
P598RAPSN105K
P598RCPSN105C
P598RCPSN105K
P 750 PSI (Pressure/psi) 0 to 750 150 to 750 2 6 P499RAP-107C
P499RAP-107K
P499RCP-107C
P499RCP-107K
P598RAPSN107C
P598RAPSN107K
P598RCPSN107C
P598RCPSN107K
HIFF (Temperature/degrees) -50 to 360 -40 to 35041 1 TE-631x, TE-6000-x,
TE-68NT-0N00S
HICC (Temperature/degrees) -45.5 to
182 -40 to 17640.5 0.5 TE-631x-x
TE-6000-x
TE-68NT-0N00S
bin Open or Closed5
(Dry Contacts)
N/A N/A N/A N/A N/A
1. See Differential Control on page 14 for information on setting up the System 450 Differential Control feature.
Table 4: System 450 Sensor Types, Setup Values, and Sensor or Transducer Product Codes (Part 2 of 2)
Sensor
Type
Unit of Measurement
Code
(Condition/Units)
Effective
Sensing
Range
Range of
Usable
Values1
Resolution
Increment
Value
Minimum
Proportional
or Control
Band
Sensor Product
Type Number2

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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2. Refer to the System 450 Series Modular Controls Product Bulletin (LIT-12011458), Catalog Page (LIT-1900549), or the
System 450 Series Controls Systems Technical Bulletin (LIT-12011459) for additional ordering information for System 450
compatible sensors and transducers.
3. See Setting Up Outputs That Reference a P110 Sensor on page 12 for information on setting up System 450 outputs that
reference the P110 Sensor Type.
4. Many of the temperature sensors that can be set up as HI°F or HI°C Sensor Types are not designed for use across the
entire range of usable values for HI°F and HI°C Sensor Types. Refer to the Technical Specifications for the sensor you
intend to use to determine the ambient temperature range that the sensor is specified to operate in. The TE-6000-6 Nickel
Sensor is the only sensor designed for use over the entire temperature range.
5. Selecting the bin Sensor Type for a sensor (Sn-1, Sn-2, or Sn-3) sets up the input to control relay outputs (only) based on
the state of the binary input contacts (open or closed) connected to the sensor input (Sn1, Sn2, or Sn3). See Binary Input
Control for Relay Outputs on page 13 for more information. Can only be used for relay outputs.
Table 5: System 450 Sensor Setup Screen Information and Procedures (Part 1 of 2)
LCD Screen Name, Description/Function, User Action, and Example
Sensor Setup Start Screen: The Sensor Setup Start screen is the first screen that is displayed when you
access the System 450 setup screens. From the Sensor Setup Start screen, you can navigate to the
Output Setup Start screens or the Sensor Setup screens. See Figure 6.
Note: You must set up the input sensors before you can set up the control system outputs. The Sensor
Setup Start screen is view-only; selections are not made in Setup Start screens.
1. In the Sensor Setup Start screen, press to go to the first Sensor Type Selection screen
(Sn-1) and begin setting up the sensors in your control system.
The screen example shows the Sensors Setup Start screen with flashing dashes.
Sensor Type Selection Screens: The Sensor Type that you select for an input sensor automatically
determines the setup parameters and values for each output that is set up to reference that sensor. See
Table 4 for information about System 450 sensors/transducers, Sensor Types, condition type, units of
measurement, minimum control band or proportional band, setup values, value ranges, and product code
numbers.
Note: For outputs to operate properly, the selected Sensor Type must match the sensor/transducer
model wired to the control module, and the sensor/transducer must be wired to the proper control module
input terminals.
2. In the Sn-1 Sensor Type Selection screen, press or to select a Sensor Type. Press to
save your selection and go to the Sn-2 Sensor Type Selection screen.
3. In the Sn-2 Sensor Type Selection screen, press or to select a Sensor Type. Press to
save your selection and go to the Sn-3 Sensor Type Selection screen.
Note: If your control system does not use three input sensors, simply press while the two dashes are
flashing in a Sensor Type Selection screen to save no Sn-3 Sensor Type and go to the next setup screen.
4. In the Sn-3 Sensor Type Selection screen, press or to select a Sensor Type. Press to
save your selection and either:
• go to the Temperature Offset Setup screen for the first temperature sensor in your system.
• return to the Sensor Setup Start Screen, if your control system has no temperature sensors.
Note: Beginning with firmware Version 2.00, if you select the same Sensor Type for Sn-1 and Sn-2, two
additional functional sensors (Sn-d and HI-2) are available for selection when you set up the control
system outputs. If you select the same Sensor Type for Sn-1, Sn-2, and Sn-3, then functional sensor HI-3
is also available for selection when you set up outputs. See High Input-Signal Selection on page 13 and
Differential Control on page 14 for more information.
The screen examples show Sn-1 with the P500 Sensor Type selected, Sn-2 with the °F Sensor Type
selected, and Sn-3 with the no Sensor Type selected.

System 450™ Series Control Modules with Analog Outputs Installation Instructions
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Setting Up Outputs That Reference a P110 Sensor
The P110 Sensor Type can monitor negative pressure down to 20 InHg (-10 psi). When referencing a P110 sensor,
System 450 displays negative pressure values in InHg on the Main and System Status screens.
But when you set up an output that references a P110 sensor and the setup value is a negative pressure value, you
must select a pressure value in negative psi.
Use Table 6 to determine the negative psi setup value that corresponds to your InHg target value. For example, if
you want a relay output to go off when the sensed pressure reaches 7 InHg, you select the value
-3.5 (psi) in the output’s Relay OFF Selection screen.
Note: When an output references the P110 Sensor Type and the output is set up for Differential Control (Sn-1 and
Sn-2 are P110 Sensor Type), the negative pressure values displayed in the differential pressure System Status
screen (dIFP) are displayed as negative psi values, not InHg values. See Differential Control on page 14 for more
information.
Temperature Offset Selection Screens: Select a temperature offset for the temperature inputs (only) in
your control system.
Sensor Type °F enables an offset of +/- 5°F in 1 degree increments.
Sensor Type °C enables an offset of +/- 2.5°C in 0.5 degree increments.
Note: The temperature offset changes the displayed temperature value by the selected offset value.
5. Press or to select a temperature offset value. Press to save your selection and either:
• go to the next Temperature Offset Selection screen (if there are additional temperature
sensors in your control system) and repeat this step for each temperature sensor.
• return to the Sensor Setup Start screen.
The screen example shows an OFFS value of -3 (°F) for Sensor 2. Therefore a sensed temperature value
of 75 (°F) at Sensor 2 is displayed as 72 (°F).
Sensor Setup Start Screen: When you have finished setting up all of the sensors for your control
system, the display returns to the Sensor Setup Start screen.
Note: You can edit the sensor setup values at any time, if required. However, changing the Sensor Type
for a sensor that is referenced by an output requires setting up the output again to the new Sensor Type
values.
After the sensors are set up for your control system, you can:
• press to scroll through the Output Setup Start screens and begin setting up your system
outputs.
• press and simultaneously to return to the Main screens.
The screen example shows Sensors Setup Start screen with flashing dashes.
Table 6: InHg Target Values/PSI Setup Values
InHg
Value
psi Setup
Value
InHg
Value
psi Setup
Value
1-0.5 11 -5.5
2-1.0 12 -6.0
3-1.5 13 -6.5
4-2.0 14 -7.0
5-2.5 15 -7.5
6-3.0 16 -8.0
7-3.5 17 -8.5
8-4.0 18 -9.0
9-4.5 19 -9.5
10 -5.0 20 -10.0
Table 5: System 450 Sensor Setup Screen Information and Procedures (Part 2 of 2)
LCD Screen Name, Description/Function, User Action, and Example
M

System 450™ Series Control Modules with Analog Outputs Installation Instructions
13
Binary Input Control for Relay Outputs
You can connect a binary input (dry contacts) to any of the three System 450 control module inputs (Sn1, Sn2, or
Sn3) and control the output relays in your control system based on the binary input’s state (open or closed).
An input (Sn-1, Sn-2, or Sn-3) that is set up as a binary input can only be referenced by a relay output. Inputs set
up as binary inputs are not available for selection on analog outputs.
When a relay output references a sensor that is set up as a binary input, the On and OFF parameter screens are
not available as you set up the output. The relay output’s On/Off state is controlled by the binary input’s Closed/
Open state and any of the timer parameters (ONT, OFFT, ONd, or OFFd) that you set up for the relay output. Refer
to the Binary Input Control for Relay Outputs section of the System 450™ Series Modular Control Systems with
Standard Control Modules Technical Bulletin (LIT-12011459) for more information.
High Input-Signal Selection
The High Input-Signal Selection feature enables a System 450 control system to monitor a condition (temperature,
pressure, or humidity) with two or three sensors (of the same type) and control relay, analog, or both outputs based
on the highest condition value sensed by the two or three referenced sensors.
In two sensor applications (HI-2), Sn-1 and Sn-2 must be the same Sensor Type. In three sensor applications
(HI-3), Sn-1, Sn-2, and Sn-3 must be the same Sensor Type.
A System 450 control system that uses High Input-Signal Selection can monitor the outlet pressures of two
condenser coils in a multi-circuit condensing unit using two pressure sensors of the same type—one connected to
each coil outlet.

System 450™ Series Control Modules with Analog Outputs Installation Instructions
14
If the multi-circuit condensing unit has single speed fan motors, multiple relay outputs can be set up to reference
the high input-signal and System 450 can stage the fans on and off based on the pressure sensed at the coil with
the highest pressure.
If the multi-circuit condensing unit has variable speed fan motors, one or more analog outputs can be set up to
reference the high input-signal and control the fan motor speeds based on the pressure sensed at the coil with the
highest pressure.
Differential Control
System 450 control modules include a Differential Control feature. Differential control is used to monitor and
maintain a given difference in a condition (temperature, pressure, or humidity) between two sensor points within a
system, process, or space.
The Differential Control feature enables a System 450 control system to monitor the temperature, pressure, or
humidity differential between two sensors of the same type (Sn-1 and Sn-2) and control relay or analog outputs
based on the sensed differential value relative to user-selected differential values (dON, dOFF, dSP, and dEP).
When a Differential Control sensor (Sn-d) is set up, the displayed differential sensor value is a calculated variable
value: (Sn-d) = (Sn-1) – (Sn-2).
The Sn-d value appears in the System Status screens as either a temperature differential value (dIFT), pressure
differential value (dIFP), or humidity differential value (dIFH). The unit of measurement associated with the
displayed differential value is determined by the Sn-1 and Sn-2 Sensor Type. See Table 4 on page 9 for Sensor
Types and their units of measurement.
The relay output setup values dON and dOFF are condition differential values. When a relay output is set up for
differential control, System 450 controls the relay state (On or Off) based on the difference between Sn-1 and Sn-2
(Sn-d) relative to the user-selected differential On (dON) and differential Off (dOFF) values.
When an analog output is set up for differential control, System 450 controls the analog signal strength based on
the difference between Sn-1 and Sn-2 (Sn-d) relative to the user-selected differential setpoint (dSP) and differential
endpoint (dEP) values.
Differential Sensor Range of Usable Values
The System 450 Differential Control sensor (Sn-d) value is always equal to Sn-1 minus Sn-2. Depending on the
intended control action of the output, the differential value may be either a positive or negative value. Therefore, the
range of usable values is twice as large as a single sensor, and each Sensor Type has an equal number of positive
and negative values. See Table 7 for the range of usable values when an output references Sn-d.
Note: Binary Inputs cannot be set up to as a Differential Sensor.
Table 7: Ranges of Usable Values for Sensor Types
in Differential Control Applications
Sensor
Type
Sn-d Range
of Usable
Values
Sensor
Type
Sn-d Range
of Usable
Values
F-290 to 290 P 30 -30.0 to 30.0
C-161.0 to 161.0 P 50 -50.0 to 50.0
rH -95 to 95 P 100 -100.0 to 100.0
P0.25 -0.500 to 0.500 P 110 -110.0 to 110.0
P 0.5 -0.500 to 0.500 P 200 -200 to 200
P 2.5 -2.50 to 2.50 P 500 -500 to 500
P 5 -5.00 to 5.00 P 750 -750 to 750
P 8 -9.00 to 9.00 HIF-380 to 380
P 10 -10.00 to 10.00 HIC-210.0 to 210.0
P 15 -16.0 to 16.0 -- --

System 450™ Series Control Modules with Analog Outputs Installation Instructions
15
Setting Up System 450 Outputs
After you build and connect power to your control system module assembly, the output numbers and output types
for your control system are automatically assigned in the UI.
Note: You must set up the input sensors for your control system before you can set up the outputs. See Setting
Up System 450 Sensors on page 9 for more information.
To set up System 450 outputs in the UI:
1. Apply power to your module assembly. After the Startup screen appears briefly (displaying the control module
firmware version), the Main screen appears on the LCD.
2. In the Main screen, press any key to exit idle mode, then press and hold and simultaneously for 5
seconds to access the setup screens and to go to the Sensor Setup Start screen.
3. At the Sensor Setup Start screen, press repeatedly to scroll through and select the desired Output Setup
Start screen. The Output Setup Start screen indicates the output number and the output type for the selected
output.
4. To set up relay outputs, see Setting Up a Relay Output and Table 8 for setup information and procedures.
5. To set up analog outputs, see Setting Up an Analog Output and Table 10 for setup information and procedures.
6. To set up the backlight brightness, see Setting Up the LCD Backlight Brightness and Table 11 for setup
information and procedures.
Setting Up a Relay Output
Table 8 provides information, procedures, guidelines, and screen examples for setting up relay outputs on System
450 control modules. See Figure 6 on page 26 for example menu flow of the Relay Output 1 setup in Table 8.
Note: The differential sensor, Sn-d, is used to set up analog and relay outputs for Differential Control. See
Differential Control on page 14 for more information.
Table 8: System 450 Setup Screen Information and Procedures for Relay Outputs (Part 1 of 4)
LCD Screen Name, Description/Function, User Action, and Example
Relay Output Setup Start Screen: The output numbers and the output type (relay or analog) are
determined by the module types and configuration of your control system’s module assembly and are
automatically assigned when you connect power to the module assembly. (See Setting Up a Control
System in the User Interface on page 5.)
Note: You must set up the control system input sensors before you can set up the outputs.
1. In the Relay Output Setup Start screen, press to go to the output’s Sensor Selection screen.
The screen example shows a Relay Output Setup Start screen for Output 1.
M

System 450™ Series Control Modules with Analog Outputs Installation Instructions
16
Sensor Selection Screen: The sensor you select here determines the output’s setup parameters and
values, including condition type, unit of measurement, minimum control band, default setup values, and
setup value ranges for several of the remaining output setup screens. If a sensor is not selected, the
remaining output setup screens do not appear. If a sensor is already selected for this output, the Sensor
Selection screen does not appear here and the Relay ON Selection (ON or dON) screen appears instead.
Notes:
• You must select a sensor in this Sensor Selection screen and the selected sensor must be already set
up in the System 450 UI. (See Setting Up System 450 Sensors.)
• On System 450 control modules, the functional sensors Sn-d and HI-2 are available, if Sn-1 and Sn-2
are the same Sensor Type. If Sn-1, Sn-2, and Sn-3 are the same Sensor Type, the functional sensor
HI-3 is also available.
2. Press or to select the sensor that this output references:
• For standard control action, select Sn-1, Sn-2, or Sn-3.
• For standard control action with High Input-Signal Selection, select HI-2 or HI-3.
• For differential control action, select Sn-d.
• For binary input control of Relay Outputs, select bIn.
Then, press to save your sensor selection and go to the Standard Relay ON Selection
screen or the Relay dON Selection.
The top screen example shows the initial Sensor Selection screen for Relay Output 1before a sensor is
selected. The remaining screen examples show some of the sensors that may be available for selection.
For the Output Relay example, Sn-2 is selected as the Sensor for Output 1as shown in the second
screen.
OR
When a relay output references Sn-1, Sn-2, Sn-3, HI-2, or HI-3, the Standard Relay ON Selection
screen appears.
Standard Relay ON Selection Screen: Select the value at which the relay turns on. Relay ON is defined
as relay LED On (lit), relay contacts N.O. to C are closed, and N.C. to C contacts are open.
Note: The value ranges and minimum control band are determined by the Sensor Type selected for the
sensor that the output references and are enforced in the Relay ON and Relay OFF Selection screens.
3. Press or to select the value at which the output relay turns on, then press to save your
selection and go to Relay OFF Selection screen.
The screen example shows an ON value of 78 (°F) selected for Relay Output 1.
When a relay output references Sn-d, the Differential Relay dON Selection screen appears.
Differential Relay dON Selection Screen: Select the dON value at which the relay turns on. The dON
value is a differential value that represents the intended difference in the condition (temperature,
pressure, or humidity) between Sn-1 and Sn-2 (Sn-1 minus Sn-2) at which the relay is turned on.
Depending on the intended control action and the physical location of Sn-1 and Sn-2 sensors in the
condition process, dON may be a positive or negative value.
Note: The unit of measurement, resolution increment, minimum control band, and range of usable
values for dON and dOFF are determined by the Sensor Type selected for Sn-1 and Sn-2. (See Table 4
and Table 7 for more information.)
3. Press or to select the differential value at which the output relay turns on. Press to save
your selection and go to Relay dOFF Selection Screen.
The screen example shows a dON value of 30 (psi) selected for Relay Output 1.
When a relay output references a hard-wired sensor (Sn-1, Sn-2, or Sn-3) that is set up with the
bin (binary input) Sensor Type, the ON and OFF screens are not available. If you select and save a
sensor set up as a binary input in Step 2, the ON Delay (ONd) screen appears. Go to Step 5.
Binary Input Control: Relay outputs that reference sensors set up with the bin Sensor Type are
controlled by the binary input contacts state (open or closed). The ON and OFF values are not used to
control relay outputs that reference a binary input sensor.
Table 8: System 450 Setup Screen Information and Procedures for Relay Outputs (Part 2 of 4)
LCD Screen Name, Description/Function, User Action, and Example

System 450™ Series Control Modules with Analog Outputs Installation Instructions
17
OR
When a relay output references Sn-1, Sn-2, Sn-3, HI-2, or HI-3, the Standard Relay OFF Selection
screen appears.
Standard Relay OFF Selection Screen: Select the value at which the relay turns off. Relay OFF is
defined as relay LED Off, relay contacts N.C. to C are closed, and N.O. to C contacts are open.
Note: The value ranges and minimum control band are determined by the Sensor Type selected for the
sensor that the output references and are enforced in the Relay ON and Relay OFF Selection screens.
4. Press or to select the value at which output relay turns off, then press to save your
selection and go to Relay-ON Delay Time Selection screen.
The screen example shows an OFF value of 75 (°F) selected for Relay Output 1.
When a relay output references Sn-d, the Differential Relay dOFF Selection screen appears.
Differential Relay dOFF Selection Screen: Select the dOFF value at which the relay turns on. The
dOFF value is a differential value that represents the intended difference in the condition (temperature,
pressure, or humidity) between Sn-1 and Sn-2 (Sn-1 minus Sn-2) at which the relay is turned off.
Depending on the intended control action and the physical location of Sn-1 and Sn-2 sensors in the
condition process, dOFF may be a positive or negative value. dOFF is defined as relay LED Off, relay
contacts N.C. to C are closed, and N.O. to C contacts are open.
Note: The unit of measurement, resolution increment, minimum control band, and range of usable
values for dON and dOFF are determined by the Sensor Type selected for Sn-1 and Sn-2. (See Table 4
and Table 7 for more information.)
4. Press or to select the differential value at which output relay turns off. Press to save
your selection and go to the Relay-ON Delay Time Selection Screen.
The screen example shows a dOFF value of 32 (psi) selected for Relay Output 1.
When a Relay Output references a hard-wired sensor (Sn-1, Sn-2, or Sn-3) that is set up with the
bin (binary input) Sensor Type, the ON and OFF screens are not available. If you select and save a
sensor set up as a binary input in Step 2, the ON Delay (ONd) screen appears. Go to Step 5.
Binary Input Control: Relay outputs that reference a sensor set up with the bin Sensor Type are
controlled by the binary input contacts state (open or closed). The ON and OFF values are not used to
control relay outputs that reference a binary input sensor.
Relay-On Delay Time Selection Screen: Select the value (in seconds) that you want output relay to
delay turning ON after the condition reaches and maintains the Relay-On value. The Relay-On Delay time
range is 0 to 300 seconds.
Note: Beginning with firmware Version 4.00, the Relay-On Delay feature can be used to delay the output
relay from going to the On state after the On value is reached at the referenced input sensor. The
condition change must reach or exceed the output's Relay-On value for the entire duration of the
Relay-On Delay, before the output relay goes On. This feature can be used to prevent controlled
equipment such as actuators from being exercised every time the condition momentarily spikes to the
Relay-On value, reducing wear on the controlled equipment.
5. Press or to select the time value (in seconds) that the output relay delays turning on after
the process condition reaches the Relay-On value, then press to save your selection and go
to the Relay-On Delay Time Selection Screen.
The screen example shows an ONd value of 30 (seconds) selected for Output 1.
Relay-Off Delay Time Selection Screen: Select the value (in seconds) that you want output relay to
delay turning Off after the condition reaches and maintains the Relay Off value. The Relay-Off Delay time
range is 0 to 300 seconds.
Note: Beginning with firmware Version 4.00, the Relay-Off Delay feature can be used to delay the output
relay from going to the Off state after the Off value is reached at the referenced input sensor. The
condition change must reach or exceed the output's Relay-Off value for the entire duration of the
Relay-Off Delay, before the output relay goes Off. This feature is used to prevent controlled equipment
such as actuators from being exercised every time the condition momentarily spikes to the Relay-Off
value, reducing wear on the controlled equipment.
6. Press or to select the time value (in seconds) that the output relay delays turning off after
the process condition reaches the Relay Off value, then press to save your selection and go
to the Relay-Off Delay Time Selection Screen.
The screen example shows an OFFd value of 0(seconds) selected for Output 1.
Table 8: System 450 Setup Screen Information and Procedures for Relay Outputs (Part 3 of 4)
LCD Screen Name, Description/Function, User Action, and Example

System 450™ Series Control Modules with Analog Outputs Installation Instructions
18
Setting Up an Analog Output
Analog outputs provide an analog signal to control equipment in your application based on the input from a
standard fixed setpoint sensor (Sn-1, Sn-2, or Sn-3) or a High Input Signal Selection sensor (HI-2 or HI-3).
Note: The differential sensor, Sn-d, is used to set up analog and relay outputs for Differential Control. See
Differential Control on page 14 for more information.
Analog outputs provide an auto-selecting analog signal that is proportional to the sensed input condition. The
System 450 analog output senses the impedance of the controlled equipment’s analog input circuit and
automatically delivers either a 0–10 VDC or 4–20 mA signal to the controlled equipment.
Minimum Relay ON Time Selection Screen: Select the minimum time that the output relay is required
to stay on after it turns on. The minimum ON Time range is 0 to 300 seconds.
7. Press or to select the minimum time that the output relay remains on after reaching the
Relay ON value, then press to save your selection and go to the Minimum Relay OFF Time
Selection screen.
The screen example shows an ONT value of 0(seconds) selected for Output 1.
Minimum Relay OFF Time Selection Screen: Select the minimum time that the output relay is required
to stay Off after it turns Off. Minimum OFF Time range is 0 to 300 seconds.
8. Press or to select the minimum time that this output relay remains off after reaching the
Relay OFF value. Press to save your selection and go to the Sensor Failure Mode Selection
screen.
The screen example shows an OFFT value of 120 (seconds) selected for Output 1.
Sensor Failure Mode Selection Screen: Select the output’s mode of operation if a referenced sensor or
sensor wiring fails. For outputs that reference functional sensors HI-2, HI-3, or Sn-d, the failure of any of
the referenced hard-wired sensors results in a functional sensor failure condition. The output operates in
the selected Sensor Failure mode until the failure is remedied. Sensor Failure mode selections for relay
outputs include:
• ON = Output relay remains on during sensor failure.
• OFF = Output relay remains off during sensor failure.
9. Press or to select this output’s mode of operation if the sensor or sensor wiring fails.
Press to save your sensor failure mode selection and go to the Edit Sensor screen.
The screen example shows OFF selected as the Sensor Failure mode for Output 1.
Edit Sensor Screen: This screen displays the sensor that this output currently references. Typically, no
action is taken in this screen. But if you need to change the sensor that this output references, you can
select a different sensor for this output in this screen.
Note: If you change the sensor that an output references to a sensor with a different Sensor Type, the
default setup values for the output change, and you must set the output up again.
10. If you do not need to change this output’s sensor, simply press to save the current sensor
selection and return to the Relay Output Setup Start screen.
To change the sensor this output references, press or to select the new sensor that this
output references. Then press to save the new sensor selection and return to the Relay ON
Selection screen (ON or dON). If the new sensor has a different Sensor Type from the
previously referenced sensor, repeat the output setup procedure for this output.
This relay output is now set up in the System 450 UI.
The screen example shows Sn-2 is selected Sensor for Output 1.
Relay Output Setup Start Screen
After you have set up this relay output, you can go to another Output Setup Start screen, the Sensor
Setup Start screen, or return to the Main screens.
11. Press to scroll through the remaining Output Setup Start screens and return to the Sensor
Setup Start screen, or press and simultaneously to return to the System 450 Main
screens.
The screen example shows a Relay Output Setup Start screen for Output 1.
Table 8: System 450 Setup Screen Information and Procedures for Relay Outputs (Part 4 of 4)
LCD Screen Name, Description/Function, User Action, and Example
M

System 450™ Series Control Modules with Analog Outputs Installation Instructions
19
Figure 5 shows an example of the analog output setup values and the resulting output signal in a typical space
heating application (SP > EP and OSP < OEP).
The control action between the input signal and the output signal can be set up four ways, depending on the values
selected for the Setpoint (SP), End Point (EP), Percent Output Signal Strength at Setpoint (OSP), and Percent
Output Signal Strength at End Point (OEP). The LCD displays different Control Ramp icons for the four control
actions.
Table 9 shows the four Control Ramp icons and the associated analog output setup value relationships.
System Output
0%
100%
Condition Value
Less Greater
65°F
10%
70°F
SP > EP
SP = 70 ( )
EP = 65 ( )
OSP = 10 (%)
OEP = 100 (%)
°F
°F
OSP < OEP
OSP
OEP
SP
EP
Proportional
Band
Fig:sys450_cntrl_rmp_exmpl
Figure 5: Control Ramp Example for a Typical
Heating Application (SP > EP and OSP < OEP)

System 450™ Series Control Modules with Analog Outputs Installation Instructions
20
Table 9: Analog Output Control Ramp Icons
Control Ramp
Displayed on
LCD
Control Action Set the Analog Output Value
Relationships for the Desired Control
Action and Control Ramp
SP < EP
OSP < OEP
SP > EP
OSP < OEP
SP > EP
OSP > OEP
SP < EP
OSP > OEP
Output Minimum at SP
Proportion
al
Band
OEP=100%
OSP=0%
SP=50°F EP=60°F
Output Minimum at SP
Proportional
Band
EP=50°F SP=60°F
OEP=100%
OSP=0%
Output Maximum at SP
OSP=100%
OEP=0%
EP=50°F SP=60°F
Proportional
Band
Output Maximum at SP
SP=50°F EP=60°F
OSP=100%
OEP=0%
Proportional
Band