Johnson Controls Penn System 450 Series User manual

System 450™ Series Control Module with Ethernet Communications Installation
Instructions 1
Refer to the QuickLIT website for the most up-to-date version of this document.
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 or analog)
outputs, including control systems that can monitor and
control temperature, pressure, and humidity
applications simultaneously.
C450CEN-x control modules feature an LCD and
four-button touch pad UI that allows you to set up a
System 450 control system, and an RJ45 Ethernet
network port that enables you to connect your control
system to and communicate across an Ethernet
network.
The System 450 control module with Ethernet
communications has an integral web server that
supports browser access. The web server can be
configured to deliver System 450 web pages to client
browsers and allows you to monitor your control
system status and change your control system
configuration in simple, user-friendly web pages.
Refer to the System 450 Series Control Systems with
Network Communications Technical Bulletin
(LIT-12011826) for detailed information on designing,
installing, setting up, and troubleshooting System 450
Series control systems with network communications.
The technical bulletin can be accessed and
downloaded on the Johnson Controls® Online Product
Literature website at the following web address:
http://cgproducts.johnsoncontrols.com/default.aspx
System 450 control modules with network
communications also include the High Input-Signal
Selection, Differential Control, Output Signal Update
Rate, and Output Signal Dead Band features.
Installation
IMPORTANT: Use this System 450™ Series
Control Module only as an operating control. Where
failure or malfunction of the System 450 control
module 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 control module.
Figure 1: System 450 Module
Dimensions, mm (in.)
63
(2-1/2)
FIG:new_enclosure_dims
1/2 in. Conduit Hole
(Nominal Trade Size)
35 mm
DIN Rail
Mount
Channel
63
(2-1/2)
63
(2-1/2)
40
(1-9/16)
40
(1-9/16)
128
(5)
13
(1/2)
75
(2-15/16)
38
(1-1/2)
System 450™ Series Control Module with Ethernet
Communications
Installation Instructions
C450CEN-x Part No. 24-7664-2934, Rev. C
Issued December 6, 2013
Supersedes November 22, 2013

System 450™ Series Control Module with Ethernet Communications Installation Instructions2
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.
• 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 the modules in an enclosure with
heat-generating devices that may cause the
temperature to exceed the ambient operating limit.
Mounting
You can mount System 450 modules on 35 mm DIN rail
(recommended) or directly to 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 the
appropriate mounting hardware.
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.
3. Clip the remaining modules to the right of the
control module on to the DIN rail and plug the 6-pin
module connectors together (Figure 3).
Note: If your System 450 control system uses a
power module, the power module must be plugged
into the right side of the control module.
To direct-mount modules to walls and other flat
surfaces using the four keyhole slots:
1. Plug the modules together, remove the module
covers, place the module assembly horizontally
against the wall surface in a suitable location, and
mark the mount hole locations on the mounting
surface (Figure 1).
Note: The four keyhole slots on the
communications control module are not accessible
from the front (even with the cover removed). Use
another System 450 module to mark the
communications module mounting hole locations
on the mounting surface.
2. Install appropriate screws or fasteners, leaving the
screw heads approximately one to two turns away
from flush to the surface.
3. Position the assembly mounting slots over the
screw heads, and then carefully tighten the
mounting screws to secure the assembly to the
surface.
Note: The mounting screws on a communications
module cannot be accessed or tightened after the
module is attached to the screws. The enclosure
has a ramp molded into the keyhole slots, which
allows you to mount the module on the screw
heads.
Note: If you mount the modules on an uneven
surface, use shims or washers to mount module
assembly evenly on the surface.
Refer to the input sensor installation instructions for
information on locating and mounting control sensors.

System 450™ Series Control Module with Ethernet Communications Installation Instructions 3
Wiring
See Figure 2 and Table 1 for electrical termination
locations and wiring information. See Technical
Specifications on page 46 for electrical ratings.
!
WARNING: Risk of Electric Shock.
Disconnect or isolate all power supplies
before making electrical connections.
More than one disconnect 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.
IMPORTANT: Use copper conductors only. Make
all wiring 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.
IMPORTANT: Do not connect 24 VAC supply
power to 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 V power connected to the
24V 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 externalpower 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.

System 450™ Series Control Module with Ethernet Communications Installation Instructions4
Table 1: System 450 Control Module with Ethernet Communications Wiring Information
Terminal
Block Label Function, Electrical Ratings, and Requirements Recommended Cable Type and Wire Sizes
Low-
Voltage
and Input
Sensors
Terminal
Block
24V Provides internal 24 VAC power at terminals for (humidity)
sensors when a C450YNN power module is connected in the
control system module assembly.
or
Accepts external 24 VAC (20–30 VAC) supply power for the
control system when a C450YNN power module is not
connected in the control system module assembly.
0.08 mm2to 1.5 mm2
28 AWG to 16 AWG
COM Provides the common connection for 24 VAC power terminal for
either internally or externally supplied 24 VAC power (only).
S1, S2, S3 Accepts passive or active (0–5 VDC) input signals from control
sensors1. 0.08 mm2to 1.5 mm2
28 AWG to 16 AWG
C, C Provide low-voltage common connections for the sensors
connected to the 5V, Sn1, Sn2, or Sn3 terminals (only).
Note: The two Cterminals are use for sensor common
connections only. The two Cterminals are connected internally.
5V Provides 5 VDC power for active sensors.
Ethernet
Port Provides 8-Pin RJ45 modular jack for connecting to an Ethernet network. CAT 5 Straight-Through or Crossover Cable
1. For sensor wire runs greater than 50 ft or where the sensor wiring is exposed to electromagnetic or radio frequency
interference, use shielded cable and connect the shield to a C (common) terminal on the control module.
Figure 2: C450CEN-x Control Module with Ethernet Communications
Showing Wiring Terminals
(C450CEN-1)
System 450 Control Module
with Ethernet Communications
6-Pin
System 450
Bus Connector
RJ45
Ethernet
Port
Common terminals (C)
are internally
connected.
Low-Voltage
Input Sensors and
Supply Power Terminals

System 450™ Series Control Module with Ethernet Communications Installation Instructions 5
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 control system
module assembly, with two sensors and three outputs,
connected to an Ethernet network.
Building a System 450 Module Assembly
To set up a System 450 module assembly:
1. Determine the controlled conditions, sensor types,
and value ranges 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.
Note: If you use a C450YNN-1C power module, it
must be plugged into the control module. Plug in
any expansion modules to the right of the power
module.
4. Apply supply power to the module assembly.
Note: 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.
Setting Up the Control System in the UI
System 450 control modules have a backlit LCD and a
four-button touch pad UI (Figure 4) 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 Building a System 450
Module Assembly on page 5.
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.)
2. Access the System 450 setup screens in the UI.
See Accessing the System 450 Setup Start
Screens on page 6.
3. Set up the control system inputs in the UI. See
Setting Up System 450 Sensors on page 8.
Figure 3: Example System 450 Control System with an Ethernet Communications Module
Controlling a Cooling System with Condenser Fan Speed Control
FIG:sys450_ethernet_app_example
C450CEN-x
Communications
Module
L1
L2
AO2
COM
AO1
L1
L2
C450YNN-1
Power
Module
C450SBN-x
Expansion Module
OUTR1
C450SQN-x
Expansion Module
OUTA2, OUTA3
A99 Temperature Sensor
Control Sensor in UI Display
( Sensor Type)
Sn-2 F°
P499 Pressure Transducer
Control Sensor in UI Display
( Sensor Type)
Sn-1 P500
RJ45
Ethernet
Port
Cooling Equipment
Control Circuit
(24 to 240 VAC)
Condenser Fan 2
Speed Control
Analog Input Circuit
Condenser Fan 1
Speed Control
Analog Input Circuit

System 450™ Series Control Module with Ethernet Communications Installation Instructions6
4. Set up the control system outputs in the UI. See
Setting Up System 450 Outputs on page 12.
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 2 and System 450 Firmware
Versions for more information.
After you install, wire, poweron, 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. See Table 2 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 repeatedly to scroll
through and view all of the status screens in your
control system. See Table 2 for more information about
the System Status screens.
System 450 Firmware Versions
System 450 firmware versions identify the features
available on System 450 modules. System 450 control
modules with network communications have the High
Input-Signal Selection and Differential Control features.
See High Input-Signal Selection and Differential
Control on page 11 for more information.
Accessing the System 450 Setup Start Screens
Access the System 450 Setup Start screens from the
Main screen. See Table 2 for more information about
the Setup Start screens.
To access the System 450 setup screens:
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 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.
Figure 4: System 450 Communications Module LEDs, LCD, Four-Button Touch Pad User Interface
FIG:sys450_ethernet_module_ui
M
100
OSP
4
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.)
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.
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.
M
M
Status or Setup Identifier:
or OSP
Displays the
unit of measurement, output, sensor number,
setup parameter for the displayed status or
setup value. (Here, the setup identifier
represents % output signal strength at setpoint.)
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.
Status or Setup Value: or Displays the current
input status, output status setup parameter
value for the displayed input sensor, output
or setup parameter. select
a different parameter value when the value
is flashing. (Here, 100= 100%.)
Press or to
LED: The green LEDs on the Comm
Module indicate Ethernet communications
performance on the Ethernet network.
Blinking Right LED = proper receive activity
Blinking Left LED = proper transmit activity
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.
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.
M

System 450™ Series Control Module with Ethernet Communications Installation Instructions 7
Table 2: System 450 Startup Screen, Main Screens, Status Screens, and Setup Start Screens Information
and Procedures (Part 1 of 2)
LCD Screen Name, Description or Function, User Action, and Example
Startup Screen: When you power 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 2.00 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. See Figure 6 for an example of the Main screens.
Note: 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 reverts to the Main screens.
While the Main screens are scrolling, you can 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 and hold and for 5 seconds to access
your control system’s Setup Start screens. But, if the System 450 User password is set to a value
other than factory-default value of 0000, the Password Protected Access screen appears and
requires you to enter either the valid User password or valid Admin password to proceed to the
Sensor Setup Start screen and the rest of the System 450 setup screens.
The top two screen examples show Sensor 1 sensing 232 psi and Sensor 2 sensing 74°F. The third
screen example shows a Temperature Differential Sensor 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 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, output signal strength (as a percentage of the total signal strength), and a control
ramp icon, which indicates the output’s control action.
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 Output 1 relay is On and Output 3 signal strength 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.
Password Protected Access Screen: When Password Protection is enabled, the Password Protected
Access screen appears after you press and hold and for 5 seconds to access your control system’s
Setup Start screens. If the User password is set to the factory-default value of 0000, password protection is
disabled, and the Password Protected Access screen does not appear; the Sensor Setup Start screen
appears. See Setting Up Password Protection on page 21 for more information on System 450 password
protection.
dIFT
bin
3

System 450™ Series Control Module with Ethernet Communications Installation Instructions8
Setting Up System 450 Sensors
You must set up the input sensors for your control
system before you can set up any of outputs. To set up
the input sensors you must access the setup screens.
See Accessing the System 450 Setup Start Screens.
The Sensor Setup Start screen is the first screen
displayed when you access the system setup screens.
Table 3 provides information about System 450
sensors, Sensor Types, parameter values, and
specified sensor or transducer product code numbers.
Setup Start Screens: Setup Start screens are view-only screens, from which you can access the setup
screens for the sensors or the displayed output; selections are not made in Setup Start screens. 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
selected for your System 450 control system and their physical order in the control system module
assembly. See Setting Up the Control System in the UI 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 appears, 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, Communications, User
Password, and Administrator Password Setup Start screens.
Table 2: System 450 Startup Screen, Main Screens, Status Screens, and Setup Start Screens Information
and Procedures (Part 2 of 2)
LCD Screen Name, Description or Function, User Action, and Example
M
Table 3: System 450 Sensor Types, Setup Values, and Sensor or Transducer Product Codes (Part 1 of 2)
Sensor
Type Unit of Measurement Value
(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 A99B-xxx
CC (Temperature/degrees) -43 to 124 -40 to 121 0.5 0.5 A99B-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 P499Rxx-401C
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 P499Rxx-402C

System 450™ Series Control Module with Ethernet Communications Installation Instructions 9
Table 4 provides sensor setup information, procedures,
and example screens. Figure 6 on page 25 provides a
System 450 UI setup example.
P 30 bAR (Pressure/bar) 0 to 30 0 to 30 0.1 0.4 P499Rxx-404C
P 50 bAR (Pressure/bar) 0 to 50 0 to 50 0.2 0.4 P499Rxx-405C
P 100 PSI (Pressure/psi) 0 to 100 0 to 100 0.5 1 P499Rxxx101C
P 1103Hg/PSI (Pressure/Hg-psi) -10 to 100 -10 to 100 0.5 1 P499Rxxx100C
P 200 PSI (Pressure/psi) 0 to 200 0 to 200 1 1 P499Rxxx102C
P 500 PSI (Pressure/psi) 0 to 500 90 to 500 1 5 P499Rxx-105C
P 750 PSI (Pressure/psi) 0 to 750 150 to 750 2 6 P499Rxx-107C
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, TE-6000-x TE-68NT-0N00S
bin Open or Closed5
(Dry Contacts) N/A N/A N/A N/A N/A
1. Because of the way that the System 450 Differential Sensor (Sn-d) is set up and calculated with two identical sensors
(Sn-1 and Sn-2), the range of usable values is twice as large as a single sensor. Each Sensor Type has an equal number of
positive and negative values. See Table 9 for the range of usable values when an output references Sn-d.
2. Refer to the System 450 Series Modular Controls Product Bulletin (LIT-12011458), Catalog Page (LIT-1900549), or the
System 450 Series Controls Systems with Communications Technical Bulletin (LIT-12011826) for additional ordering
information for System 450 compatible sensors and transducers.
3. See Setting Up Outputs That Reference a P 110 Sensor on page 10 for information on setting up System 450 outputs that
reference the P 110 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 11 for more information.
Table 3: System 450 Sensor Types, Setup Values, and Sensor or Transducer Product Codes (Part 2 of 2)
Sensor
Type Unit of Measurement Value
(Condition/Units)
Effective
Sensing
Range
Range of
Usable
Values1
Resolution
Increment
Value
Minimum
Proportional
or Control
Band
Sensor Product
Type Number2
Table 4: System 450 Sensor Setup Screen Information and Procedures (Part 1 of 2)
LCD Screen Name, Description or Function, User Action, and Example
Sensor Setup Start Screen: The Sensor Setup Start screen is the first screen 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.

System 450™ Series Control Module with Ethernet Communications Installation Instructions10
Setting Up Outputs That Reference a P 110 Sensor
The P 110 Sensor Type can monitor negative pressure
down to 20 InHg (-10 psi). When referencing a P 110
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 P 110
sensor and the setup value is a negative pressure
value, you must select a pressure value in negative psi.
Sensor Type Selection Screens: The Sensor Type 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 3 for information about System 450 sensors or 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 or transducer
model wired to the control module, and the sensor or transducer must be wired to the proper control
module input terminals.
2. In the Sn-1 Sensor Type Selection screen, press or to select the desired 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 the desired 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 Sensor Type and go to the next setup screen.
4. In the Sn-3 Sensor Type Selection screen, press or to select the desired 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: On System 450 control modules with network communications, 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 11 and Differential Control on page 11 for more information.
The screen examples show Sn-1 with the P 500 Sensor Type selected; Sn-2 with the °F Sensor Type
selected; and Sn-3 with the no Sensor Type selected.
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 the desired temperature offset value. Press :
• to 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.
• to 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 4: System 450 Sensor Setup Screen Information and Procedures (Part 2 of 2)
LCD Screen Name, Description or Function, User Action, and Example
M