Johnson Controls Penn System 450 Series Service manual

1System 450™ Series Modular Control Systems with Standard Control Modules
Technical Bulletin
Refer to the QuickLIT website for the most up-to-date version of this document.
Document Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System 450 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
System 450 Standard Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Control Modules and User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Expansion Modules, Module Assemblies, and Outputs . . . . . . . . . . . . . . . . . . . . . . . . 13
Module Assemblies, Output Types, and Output Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hybrid Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System 450 Compatible Sensors and Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
System 450 Sensors and Transducers for Standard Control Modules . . . . . . . . . . . . . . . . 16
Active and Passive Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System 450 Functional Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Relay Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Direct and Reverse Control Actions for Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Proportional Plus Integral Control and Integration Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
High Input Signal Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Differential Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Sensor Failure Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
System 450 Standard Control System Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Clean Room Control System Example with Temperature, Pressure, and Humidity Control 28
Solar Heating Control System Example Using Differential Control . . . . . . . . . . . . . . . . . . . 28
Hybrid Analog and High Input Signal Selection Control System Example. . . . . . . . . . . . . . 32
Detailed Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Designing and Building System 450 Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . 34
System 450™ Series Modular Control Systems
with Standard Control Modules
Technical Bulletin Code No. LIT-12011459
Issued October 28, 2013
Supersedes July 24, 2012

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin2
Selecting, Installing, and Setting Up Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Assembling System 450 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Installing System 450 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Locating System 450 Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Wiring System 450 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Wiring System 450 Sensors and Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Setting up a System 450 Standard Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Determining Output Numbers and Output Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
System 450 UI Navigation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Accessing and Navigating the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Viewing the System Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Accessing the System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Setting Up the Sensors and Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Setting up Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Setting up a Relay Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Setting up an Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Setting up a Pulse Region Hybrid Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Setting Up Outputs That Reference a P 110 Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Determining the Integration Constant for an Analog Output . . . . . . . . . . . . . . . . . . . . 56
Testing the Slowest to Fastest Time Integral to Determine I-C Setting . . . . . . . . . . . . . . . . 57
Using the Response Time to a Step Change to Determine the I-C Setting . . . . . . . . . . . . . . . . . 58
Troubleshooting System 450 Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Specified Voltage Ranges for Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Repair and Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
C450CPN-3C and C450CQN-3C Control Modules with Analog Output. . . . . . . . . . . . . 67
C450CPW-100C Control Module with Hybrid Analog Output . . . . . . . . . . . . . . . . . . . . 68
C450CBN-3C and C450CCN-3C Control Modules with Relay Output . . . . . . . . . . . . . . 69
C450SPN-1C and C450SQN-1C Expansion Modules with Analog Output . . . . . . . . . . 70

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 3
C450SBN-3C and C450SCN-3C Expansion Modules with Relay Output . . . . . . . . . . . 71
C450YNN-1C Power Supply Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
System 450 Glossary of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin4

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 5
System 450™ Series Modular Control Systems with
Standard Control Modules
Technical Bulletin
Document Introduction
This document describes System 450™ features and functions, and provides
guidelines and instructions for designing, selecting, installing, setting up, and
troubleshooting System 450 control systems that use System 450 standard control
modules or the System 450 control module with Hybrid Analog Output
(C450CBN-x, C450CCN-x, C450CPN-x, C450CQN-x, and C450CPW-100
models).
This document also provides information and instructions for selecting, installing,
and setting up sensors, expansion modules, and the power module in your control
systems with standard control modules or the hybrid analog control module.
This document also provides System 450 Technical Specifications on page 67 and
references to System 450 Related Documentation.
In this document, control module refers to the System 450 standard control
modules noted previously and the System 450 hybrid analog output control
module. Hybrid analog output refers only to the System 450 hybrid analog
output control module (C450CPW-100).
Note: For information regarding System 450 reset control modules
(C450RxN-x) and control systems that use reset control modules, refer to
the System 450 Series Modular Control Systems with Reset Control
Modules Technical Bulletin (LIT-12011842).
Note: For information regarding System 450 control modules with network
communications, refer to the System 450 Series Modular Control Systems
with Communications Control Modules Technical Bulletin (LIT-12011826).
Related Documentation
Table 1 provides references to System 450 related documentation, including sensor
installation instructions.
Table 1: Related Documentation (Part 1 of 2)
For Information On See Document LIT or Part Number
System 450 Series Features, Benefits,
Models, and Technical Specifications System 450 Series Modular Control Product Bulletin LIT-12011458
System 450 Series Features, Benefits,
Models, and Technical Specifications System 450 Series Modular Control Catalog Page LIT-1900549
Installing, Wiring, and Setting up
System 450 Control Modules with Relay
Output
System 450 Series Control Modules with
Relay Outputs Installation Instructions Part No. 24-7664-2675
Installing, Wiring, and Setting up
System 450 Control Modules with
Analog Output
System 450™ Series Control Modules with
Analog Outputs Installation Instructions Part No. 24-7664-2853

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin6
Installing, Wiring, and Setting up
System 450 Control Modules with
Hybrid Analog Output and High Input
Signal Selection
System 450 Series Control Module with
Hybrid Analog Output and High Input
Signal Selection Installation Instructions
Part No. 24-7664-2802
Installing and Wiring System 450
Expansion Modules with Relay Output System 450 Series Expansion Modules with Relay Outputs Installation Instructions Part No. 24-7664-2683
Installing and Wiring System 450
Expansion Modules with Analog Output System 450 Series Expansion Modules with Analog Outputs Installation
Instructions
Part No. 24-7664-2799
Installing and Wiring the System 450
Power Module System 450 Series Power Module Installation Instructions Part No. 24-7664-2691
Installing and Wiring the A99 Series
Temperature Sensors A99B Series Temperature Sensors Product/Technical Bulletin LIT-125186 Part No. 24-7664-1636
Installing and Wiring the TE-6000 Series
Temperature Sensing Elements TE-6000 Series Temperature Sensing Elements Installation Instructions Part No. 24-4034-26
Installing and Wiring the TE-6300P
Series Temperature Sensors TE-6300P Series Temperature Sensors Installation Instructions Part No. 24-4034-107
Installing and Wiring the TE-6300M
Series Well Insertion Temperature
Sensors
TE-6300M Series Well Insertion
Temperature Sensors Installation
Instructions
Part No. 24-4034-182
Installing and Wiring the TE-6300P
Series Outdoor Air Temperature
Sensors
TE-6300P Series Outdoor Air Temperature
Sensors Installation Instructions Part No. 24-4034-190
Installing and Wiring the TE-6300V
Series Flange Mount Duct Averaging
Temperature Sensors
TE-6300V Series Flange Mount Duct
Averaging Temperature Sensors
Installation Instructions
Part No. 24-4034-220
Installing and Wiring the TE-6300P
Series Wall Mount Temperature Sensors TE-6300P Series Wall Mount Temperature Sensors Installation Instructions Part No. 24-4034-204
Installing and Wiring the TE-6300M
Series Duct Averaging Temperature
Sensors
TE-6300M Series Duct Averaging
Temperature Sensors Installation
Instructions
Part No. 24-4034-174
Installing and Wiring the TE-6300F
Series Flush Mount Sensors TE-6300F Series Flush Mount Sensors Installation Instructions Part No. 24-4034-255
Installing and Wiring the TE-6300A
Series Adjustable Length Duct Probe
Temperature Sensors
TE-6300A Series Adjustable Length Duct
Probe Temperature Sensors Installation
Instructions
Part No. 24-4034-247
Installing and Wiring the TE-6300V
Series Flange Mount Duct Probe
Temperature Sensors
TE-6300V Series Flange Mount Duct
Probe Temperature Sensors Installation
Instructions
Part No. 24-4034-212
Installing and Wiring the TE-6300M
Series Duct Probe Temperature Sensors TE-6300M Series Duct Probe Temperature Sensors Installation Instructions Part No. 24-4034-166
Installing and Wiring the TE-6800 Series
Temperature Sensors TE-6800 Series Temperature Sensors Installation Instructions Part No. 24-10409-1
Installing and Wiring the P499 Series
Electronic Pressure Transducers P499 Series Electronic Pressure Transducers Product/Technical Bulletin LIT-12011190 Part No. 24-7664-2659
Installing and Wiring the HE-67xx
Humidity Sensors and Humidity with
Temperature Sensors
TrueRH Series HE-67xx Humidity Element
with Temperature Sensor Installation
Instructions
Part No. 24-9527-7
Installing and Wiring Setra Systems
Model 265 Differential Pressure
Transducers
Setra Systems Model 265 Differential
Pressure Transducer Installation Guide Search QuickLIT Product Information
website for Setra
System Model 265.
Table 1: Related Documentation (Part 2 of 2)
For Information On See Document LIT or Part Number

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 7
System 450 Overview
The System 450 Series is a family of compact digital electronic control, expansion,
and power modules that are easily assembled and set up to provide reliable on/off
and proportional control of temperature, pressure, and humidity conditions in a
wide variety of HVACR and commercial/industrial process applications.
The System 450 Series is designed to replace System 350 Series and System 27
Series control systems and provides more features and greater flexibility with far
fewer model variations. Most System 350 and System 27 modules are designed for
single condition applications (either temperature, pressure, or humidity) and
cannot be configured to control multiple conditions with a single control system.
Depending on the control module model used, a single System 450 control system
can monitor and control both temperature and humidity, or temperature, pressure,
and humidity simultaneously.
Note: System 450 modules are not compatible with System 350 or System 27
modules, but you can build all of the System 350 and System 27 control
systems and many more with System 450 modules, usually with fewer
modules.
The System 450 Series has several model variations; each module is designed to be
multi-purpose, adaptable, and completely field configurable for temperature,
pressure, and humidity applications. The System 450 Series allows you to build a
wide range of inexpensive, compact, durable, and versatile custom control systems
that allow you to monitor and control multiple control loops in your controlled
system. A System 450 control system can monitor temperature, pressure, and
humidity simultaneously and control up to ten outputs (analog outputs, relay
outputs, or both) based on the monitored conditions.
Note: System 450 communications control modules, System 450 standard
control modules, and the System 450 control module with hybrid analog
output can monitor and control temperature, pressure, and humidity
applications simultaneously. System 450 reset control modules can
monitor and control temperature and humidity applications simultaneously.
A System 450 standard control system includes:
• a single System 450 standard control module, which provides the control
system UI for setting up, monitoring, and controlling your system and the
sensor wiring terminals for connecting the sensors to your control system.
• one to ten outputs provided by the control module and expansion modules.
Each output provides either on/off control or a proportional analog signal
(0 to 10 VDC or 4 to 20 mA) to the equipment in your controlled system.
• one to three sensors or transducers, which are hard-wired directly to the control
module and provide input signals for monitoring and controlling your system
equipment.
• an optional power module to provide power to the connected control module
and expansion modules.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin8
See Table 11 on page 62 for a list of System 450 modules that can be used in
standard and hybrid analog output control systems. Refer to the System 450 Series
Modular Controls Product Bulletin (LIT-12011458) for a complete list and
description of the System 450 modules, compatible sensors and transducers, and
accessories.
Figure 1 shows an example System 450 standard control system connected as a
room heating and cooling control system with condenser fan speed control.
Figure 3 on page 12 shows the System 450 UI Main Screens, System Status
screens, and System Setup Screens for the heating and cooling control system
shown in Figure 1.
Figure 1: System 450 Standard Control System Connected
as a Room Heating and Cooling Control System with
Condenser Fan Speed Control
* Connect cable shields
at only one point to any
“C” terminal on the
Input Terminal Block.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 9
System 450 Standard Control Modules
A System 450 standard control system can provide the following types of control
to your application equipment:
•On/Off Control, including multi-stage control for temperature, pressure, and
humidity applications. (See Relay Outputs on page 18 for more information.)
•Proportional Analog Control, including multi-stage control for temperature,
pressure, and humidity applications. (See Analog Outputs on page 20 for more
information.)
•Combination of On/Off Relay and Analog Output Control, with up to 10
outputs per control system and any combination of relay and analog outputs.
• Multi-Stage Control (Relay or Analog) for temperature, pressure, and
humidity applications.
•Multi-Purpose Control, including simultaneous control of temperature,
pressure, and humidity conditions.
•Stand-Alone Control. A single standard control module can be quickly and
easily configured to replace a wide variety of specialized controls in the field.
•Direct and Reverse Action Proportional Control. See Direct and Reverse
Control Actions for Analog Outputs on page 20 for more information.
•Proportional Plus Integral Control. See Proportional Plus Integral Control
and Integration Constants on page 23 for more information.
•High Input Signal Selection allows you to monitor a condition with two or
three identical sensors at different locations in your controlled system and
control system outputs according to the highest condition value sensed by the
sensors. See High Input Signal Selection on page 24 for more information.
•Differential Control allows you to monitor and control a condition differential
in a controlled system; for example, the water pressure drop across an in-line
water filter. See Differential Control on page 25 for more information.
•Hybrid Analog Output Control on C450CPW-100 control modules enables
an analog VDC output to transition to a pulse output at low signal levels,
providing more efficient low-speed control of Electronically Commutated
(EC) motors in condenser fan applications. (See Hybrid Analog Output on
page 14 for more information.)
Note: System 450 standard control modules do not include reset control,
real-time clock, setback scheduling control, or load balancing capabilities.
These features are available on the System 450 reset control modules only.
Refer to the System 450 Control Systems with Reset Control Modules
Technical Bulletin (LIT-12011842) for more information about reset control
modules and reset control systems. Only the C450CPW-100 model
provides a hybrid analog output for direct control of EC motors. See
Hybrid Analog Output on page 14 for more information.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin10
Control Modules and User Interface
Each System 450 standard control system requires a single control module.
System 450 control modules have an LCD that enables you to set up and monitor
your control system, along with a four-button touchpad for navigating the control
system status and setup screens, and setting up the system parameters. Figure 2
shows a standard control module and describes the various features of the
System 450 control system UI for standard control modules.
Standard System 450 control modules are available with one or two relay outputs
or with one or two analog outputs and the standard System 450 firmware. See
Table 11 on page 62 for model descriptions and System 450 Standard Control
Modules on page 9 for more information.
The System 450 control module with hybrid analog output has a single analog
output that can be configured as a hybrid analog output to optimize and extend the
controlled speed range of variable speed EC motors. See Hybrid Analog Output on
page 14 for more information.
All System 450 control modules can control both relay outputs and analog outputs,
regardless of the type of outputs that the control module has onboard. You set up
all of the sensors and all of the outputs (relay and analog), including the expansion
module outputs, in the control module UI. A standard control module can also be
configured as a simple stand-alone control system when your application requires
only one or two relay outputs, or one or two analog outputs.
Figure 2: System 450 Control Module with Analog Outputs Showing LCD and
Four-Button Touchpad User Interface
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
and/or setup parameter. select
a different parameter value when the value
is flashing. (Here, 100 = 100%.)
Press or to
LED: Green LEDs on Control Module and
Expansion Modules indicate if the associated
relay or analog output is on or off. If the analog
output is partially on (between 0 an 10V), the
LED blinks. The higher the output signal
strength, the longer the LED is on.
FIG:sys450_comm_module_ui
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.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 11
During normal operation, the LCD displays the Main System 450 screens (Sensor
Status screens), which automatically scroll through and display the status of the
hardwired and functional sensors in your control system. You can also view the
status of all the outputs in your control system and access the System Setup screens
from the Main screens in the System 450 UI. See on page 40 for more
information.
The System 450 System Status screens display the status of each output in the
control system (in addition to the sensor status screens). A relay output status is
displayed as On or OFF. See Relay Outputs on page 18 for more information. An
analog output status is displayed as a percentage of the total output signal strength
(0 to 100%). The analog output status screens also display an icon that indicates
the control action of the output. See Analog Outputs on page 20 for more
information.
The System Setup screens in the System 450 UI enable you to easily set up the
system sensors and all of the system outputs for your control system. See on page
40 for more detailed procedures for setting up your control system.
Figure 3 illustrates the System 450 UI navigation paths, parameter designations,
and values for the control system example (shown in Figure 1) using a System 450
standard control module. Figure 3 shows the Main screens (sensor status screens),
the System Status screens, the System Setup screens, and the Output Setup screens
for an example System 450 standard control application.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin12
.
Figure 3: System 450 UI Menu Flow Chart Example Showing Navigation Paths and
Example Settings in the Main, System Status, Sensor Setup, and Output Setup Screens
for the Room Heating and Cooling Control System with Condenser Fan Speed Control
Application Shown in Figure 1
M
FIG:menu_flw_chrt
232
PSI
1
Main Screen
Sensor 2 Status
74
°F
2
Main Screen
Sensor 1 Status
Up to ten Outputs and
three Sensors can be
set up and displayed.
Relay Output 2
Status
OFF
OUT
2
Output Relay
2
OFF
Relay Output 1
Status
OUT
1
Output Relay
1
On
Analog Output
3
Status
64
OUT
3
Output Signal
at % of Ran
ge
3
64
Sensor 3
Status
– – – –
3
Sensor
Not Set Up
3
Sensor 2
Status
74ºF 2
at Sensor
74
232
PSI
1
Sensor 1
Status
232 psi 1
at Sensor
Sensor Setup
Screens
System Status
Screens
Main Screens
(Sensor Status)
Relay Output 1
Cooling
Equipment
Setup Screens
Press and hold +
for 5 seconds to go to
the Setup Start screens.
Press to scroll through
Sensor Status screens and
Output Status screens.
SENS
Sensor Type
Setup Start
Select Sensor 2
Type
°F
Sensor Type
(-40 to 250ºF)
ºF
Select Sensor 3
Type
No
Sensor Type
Selected
Select Sensor 1
Type
P500
Sn-1 Sn-2 Sn-3
Select
Temperature (only)
Offset Degrees
-3
OFFS
2
During normal operation, the display automati
cally scrolls through the Sensor Status screens
for all sensors set up in the UI. After a 2 minute pause in any setup or status
screen (below), the display returns to autoscrolling through the
Main (Sensor Status) screens. Press in any Setup screen to go to the ass
ociated Setup Start screen.
Press + simultaneously in any Setup Sta
rt screen to return to autoscrolling through the Main screens.
M
On
°F
2
Relay Output
Setup Start
OUTR
1
Sensor 2
1
Selected for
Relay Output
Relay
Output
1
Select Relay ON
Value
ON
1
78
Relay Output
at ºF
1
ON 78
OFF
1
Select Relay OFF
Value
Relay Output
at ºF
1
OFF 75
Select Minimum
Relay ON Time
ONT
1
0
Relay Output
Seconds
(Minimum)
1
ON 0
Select Sensor
Failure Mode
SNF
1
OFF
Relay Output
if
Sensor 2 Fails
1
OFF
Se
lect Minimum
Re
lay OFF Time
OFFT
1
120
R
elay Output
Seconds
(Minimum)
1
OF
F 120
Select
Sensor
Sn-2
SENS
1
Edit
Input Sensor
Sensor (Sn-2)
Controls
Relay Output
2
1
SENS
1
Sn-2
Up to ten
Outputs can
be connected
and set up.
M
OUTA
3
OutputAnalog
Setup Start
Analog
Output
3
Select
Setpoint Value
Prop. Band
SP
3
200
Analog Output
Prop. Band
Setpoint psi
3
200
Select Prop. Band
End Point Value
EP
3
250
Analog Output
Prop. Band
End Point psi
3
250
Select Integration
Constant Value
I-C
3
0
Analog Output
Integration
Constant
3
No
Select % Output
Signal Value
at Setpoint
OSP
3
10
Output is %
of Range at
Value
10
Setpoint
Select % Output
Signal Value
at End Point
OEP
3
90
Output is %
of Range at
Value
90
End Point
Select Sensor
Failure Mode
SNF
3
OFF
Analog Output
if
Sensor 1 Fails
3
OFF
M
Analog Output 3
Condenser
Fan Speed
Control
Setup Screens
M
SENS
3
Edit
Input Sensor
Sensor (Sn-1)
Controls
Analog Output
1
3
Sn-1
Select
Sensor
SENS
3
Sensor 1
3
Selected for
Analog Output
Sn-1
Relay Output
Setup Start
OUTR
2
Sensor 2
2
Selected for
Relay Output
Relay
Output
2
Select Relay ON
Value
ON
2
Relay Output
at ºF
2
ON 65
OFF
2
Select Relay O
FF
Value
Relay Outp
ut
at
ºF
2
OFF 7
0
Select Minimum
Relay ON Time
ONT
2
0
Relay Output
Seconds
(Minimum)
2
ON 0
Select Sensor
Failure Mode
SNF
2
OFF
Relay Output
if
Sensor 2 Fails
2
OFF
Select Minimum
Relay OFF Time
OFFT
2
30
Relay Output
Seconds
(Minimum)
2
OFF 30
Select
Sensor
Sn-2
SENS
2
Edit
Input Sensor
Sensor (Sn-2) Controls Relay
2 2
SENS
2
Sn-2
M
The current status of each sensor and output is displayed. Press to manually scroll through the sensor and output statuses.
Relay Output 2
Heating
Equipment
Setup Screens
65

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 13
Expansion Modules, Module Assemblies, and Outputs
System 450 expansion modules provide additional outputs to expand your control
systems and meet your specific application requirements.
A System 450 control system can provide up to ten outputs, which can be any
combination of relay and analog outputs. Expansion modules are available with
one or two relay outputs, or with one or two analog outputs. See Table 11 on
page 62 for information on the System 450 modules that can be used in a standard
control system.
Module Assemblies, Output Types, and Output Numbers
You can easily plug System 450 modules together using the 6-pin connectors
located on the sides of the modules’ housings and mount these module assemblies
on standard 35 mm DIN rail (recommended) or directly to a hard, even surface.
See Mounting on page 36 for more information.
Figure 4 shows a System 450 module assembly example, the module positions, the
output types, and the automatically assigned output numbers used in the System
Setup screens in the control module UI.
The control module is always mounted on the left side of the module assembly. If a
System 450 power module is used, the power module is always plugged into the
right side of the control module. If expansion modules are used, they can be
plugged into the assembly in any order on the right side of the power module (or
the right side of the control module, if a power module is not used in the
assembly). See Assembling System 450 Modules on page 35 for more information.
Figure 4: System 450 Module Assembly Example Showing Standard Control
Module Positions, Output Positions, and Output Numbers

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin14
Each time a System 450 module assembly is powered on, the control module polls
all of the modules to identify output type (relay or analog) and then assigns an
output number (1 to 9 and 0 = 10) to each output, starting with the first output on
the first expansion module connected to the right of the control module (Figure 4).
Output numbers are displayed on the control module LCD to identify the output
you are viewing as you navigate the system status and setup screens in the
System 450 UI (Figure 2).
Hybrid Analog Output
The C450CPW-100 control module is designed for use with variable speed
Electronically Commutated (EC) fan motors on a wide variety of refrigeration and
HVAC condensing units.
The C450CPW-100 module has a single onboard analog output that can be
configured as a hybrid analog output to optimize and extend the controlled speed
range of variable speed EC motors. The onboard analog output can also be set up
for High Input Signal Selection, which enables precise and efficient EC motor
speed control on multi-circuit condensing units.
Hybrid analog output control enables the C450CPW-100 control module’s hybrid
analog output to transition between a pulse output and a standard VDC output,
depending on the sensor value relative to the proportional band. At low output
levels, the pulse output signal provides an average motor speed that is less than the
EC motor’s fixed minimum speed (Figure 5).
Note: Only Analog Output 1 (OUTA1) on the C450CPW-100 control module can
be configured as a hybrid analog output and use the High Input Signal
Selection feature. These features are not available for any of the other
outputs in control systems that use a C450CPW-100 control module.
Figure 5: Pulse Signal with Pulse Level = 25% and Logical Output = 12.5%

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 15
System 450 Compatible Sensors and Transducers
System 450 standard control modules are designed to operate with a variety of
compatible sensors and transducers. The System 450 compatible sensors and
transducers cover a wide range of temperature, pressure, and humidity conditions.
Note: System 450 compatible sensors consist of temperature sensors, humidity
sensors, and pressure transducers. The term sensor refers to all System 450
compatible input devices including transducers, unless noted otherwise.
System 450 compatible sensors also come in a variety of styles and configurations,
allowing you to select the sensor or transducer that best fits your control system
requirements. See Table 11 through Table 20 in Repair and Ordering Information
on page 62 for more information on System 450 compatible sensors.
You can connect up to three sensors to a System 450 control module at the
low-voltage terminal block. See Wiring System 450 Components on page 37 for
more information on System 450 sensor wiring terminals on control modules.
Refer to the System 450 module installation instructions and the sensor installation
instructions referenced in Related Documentation on page 5 for information on
installing, wiring, operating, troubleshooting, and replacing System 450
compatible sensors.
For each sensor in your control system, you must select the sensor’s corresponding
Sensor Type when you set up the sensors in the System 450 UI. A sensor’s
corresponding Sensor Type determines the controlled condition, unit of
measurement, minimum differential, setup values, and ranges for each output that
is set up to reference the sensor.
See Table 2 on page 16 for information about Sensor Types, the corresponding
output setup values and ranges, sensor models, and transducer models used in
standard System 450 control systems.
System 450 automatically designates the sensor connected to the Sn1 terminal and
a common (C) terminal as the Sn-1 sensor in the UI. The sensor connected to the
Sn2 and a C terminal is designated Sn-2, and the sensor connected to Sn3 and a C
terminal is designated Sn-3. You set up each sensor in the corresponding sensor
setup screens in the UI.
Note: For a System 450 control system to operate properly, you must wire the
correct sensor or transducer model to the correct sensor input terminals on
the control module and select the correct Sensor Type in the corresponding
Select Sensor Type screen in the System 450 UI. You must also set the
active/passive sensor jumpers or switches on the control module correctly
for each sensor or transducer connected to your control system.
See on page 40 and Setting Up the Sensors and Transducers on page 45 for more
information and procedures on setting up sensors and Sensor Types in the System
450 UI. See Active and Passive Sensors on page 17 for information on setting the
active/passive switches and jumpers.

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin16
System 450 Sensors and Transducers for Standard Control Modules
Table 2 shows the Sensor Types, output setup values, value ranges, and product
types for the temperature sensors, humidity sensors, and pressure transducers that
are compatible with the C450CxN-x standard control module models.
Table 2: System 450 Sensor Types, Setup Values, and Sensor/Transducer
Product Codes
Sensor
Type
Unit of Measurement
Value
(Condition/Units)
Effective
Sensing
Range
Range of
Usable
Values1
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. See Table 5 on page 26 for the
Range of Usable Values when an output references Sn-d.
Resolution
Increment
Value
Minimum
Proportional
or Control
Band
Sensor Product
Type Number2
2. See Repair and Ordering Information on page 62 (Table 12 through Table 20) for additional ordering information for
System 450 compatible sensors and transducers.
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 0.5 INWC (Pressure/in. W.C.) 0 to 0.5 0.025 to 0.5 0.005 0.025 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
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 P499Rxx-101C
P 1103
3. See Active and Passive Sensors on page 17 for information on setting up System 450 outputs that reference the P 110
Sensor Type.
Hg/PSI (Pressure/Hg-psi) -10 to 100
(20 inHg to
100 psi)
-10 to 100 0.5 1 P499Rxx-100C
P 200 PSI (Pressure/psi) 0 to 200 0 to 200 1 1 P499Rxx-102C
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 340 -40 to 3404
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 condition range that the sensor is specified to be mounted and operate in.
1 1 TE-631x, TE-6000-x
TE-68NT-0N00S
HICC (Temperature/degrees) -45.5 to
170 -40 to 17040.5 0.5 TE-631x, TE-6000-x
TE-68NT-0N00S

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 17
Active and Passive Sensors
Each sensor/transducer hardwired to a System 450 control system is either an
active or passive sensor. Passive System 450 sensors are two-wire temperature
sensors that connect to one of the sensor input terminals and a common terminal
(C) only. Active sensors are three-wire humidity sensors and pressure transducers
that connect to one of the sensor input terminals, a common terminal, and a voltage
supply terminal (24V or 5V). The sensors and transducers have the following
requirements:
• Temperature sensors do not require a power source.
• Humidity sensors and differential air pressure transducers require 24 VAC
supply power and must be connected to the 24V terminal on the input terminal
block.
• P499 pressure transducers require a 5 VDC power source and must be
connected to the 5V terminal on the input terminal block.
On control modules with analog outputs, set the active/passive switches to ON for
passive temperature sensors and off for active humidity sensors.
On control modules with relay outputs, position the active/passive jumpers across
both pin terminals for passive temperature sensors and on one terminal for active
humidity and pressure sensors.
See System 450 Standard Control System Examples on page 27 for System 450
control system examples showing active/passive sensor jumper or switch settings.
Figure 6: Example Showing the Active/Passive Slide Switch Settings
on a Control Module with Analog Outputs
Figure 7: Example Showing the Active/Passive Jumper Positions
on a Control Module with Relay Outputs

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin18
System 450 Functional Sensors
System 450 control modules also enable several functional sensors based on the
input from one or more of the hard-wired sensors in your control system. Selecting
a functional sensor for an output on a System 450 standard control system enables
the differential or high signal selection control feature on the output.
Beginning with firmware Version 2.00, System 450 standard control modules
provide for three additional functional sensors:
• When Sn-1 and Sn-2 are set up as the same Sensor Type, the High Input Signal
Selection functional sensor (HI-2) and Differential Control functional sensor
(Sn-d) are enabled and available in the Sensor Selection screens for each
output in the control system.
• When Sn-1, Sn-2, and Sn-3 are the same Sensor Type, the High Input Signal
Selection functional sensor (HI-3) is also enabled and available.
See High Input Signal Selection on page 24 and Differential Control on page 25 for
more information about these functional sensors and system control features.
Relay Outputs
Relay outputs provide low and line-voltage on/off control for devices and
equipment in your controlled systems. Each relay output is a Single-Pole,
Double-Throw (SPDT) set of dry contacts. See Figure 15 on page 38.
Note: System 450 output relays are SPDT dry contact relays only and do not
provide any power source for your controlled equipment.
Selecting an ON value that is less than the OFF value (ON < OFF) turns the relay
on when the sensed condition value decreases, which is the typical heating mode in
temperature applications and referred to as reverse acting on/off control.
Selecting an ON value that is greater than the OFF value (ON > OFF) turns the
relay on when the sensed condition value increases, which is the typical cooling
mode in temperature applications and referred to as direct acting on/off control.
You can set up multiple relay outputs to create a variety of equipment staging
control systems. See Wiring System 450 Components on page 37 for information
on wiring output relays. See Technical Specifications on page 67 for the relay
output electrical ratings.
A green LED on the relay control and relay expansion module housings (Figure 2)
indicates the relay output status.
When a relay output is On:
• the corresponding green LED on the module housing is lit
• the LNO (Line Normally Open) relay contact is closed
• the LNC (Line Normally Closed) relay contact is open
• the corresponding Output Status screen in the UI displays On
When a relay output is Off:
• the corresponding green LED on the module housing is not lit

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin 19
• the LNO relay contact is open
• the LNC relay contact is closed
• the corresponding Output Status screen in the UI displays OFF
System 450 control and expansion modules are available with one or two relay
outputs. See Table 11 on page 62 and Technical Specifications on page 67 for more
information about the System 450 Series module models used to build standard
control systems.
A relay output’s control action is determined by the values that you select in the
ON and OFF relay output setup screens:
• Relay ON values (ON) are the values at which the relay turns On.
• Relay Off values (OFF) are the values at which the relay turns Off.
Table 3 illustrates direct and reverse relay actions. When you select On/Off
condition values where OFF is less than On, the output relay is a direct acting
relay. When you select condition values where On is less than Off, the output relay
is a reverse acting relay.
Table 3: System 450 Output Relay Control Actions and the Relationship
Between ON and OFF Values
In temperature applications, direct acting relays are often used to control cooling
equipment, while reverse acting relays are often used to control heating equipment.
Control Action Set the Relay Output ON/OFF Value
Relationships for the Desired Control
Action
OFF < ON
ON < OFF
Relay State
Relay On
Relay Off
Sensed Condition
OFF
Condition
Value
Direct Acting Relay
OFF < ON
ON
Condition
Value
Relay State
Relay On
Relay Off
Sensed Condition
ON
Condition
Value
OFF
Condition
Value
Reverse Acting Relay
ON < OFF

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin20
In pressure applications, directing acting relays are often used for condenser fan
cycling control or pump-down control, while reverse acting relay may be used for
high pressure cut-out.
In humidity applications, direct acting relays often control dehumidification
equipment, and reverse acting relay often control humidification equipment.
Analog Outputs
Analog outputs provide proportional analog signals for devices and equipment in
your controlled systems. Each analog output can generate either a 4 to 20 mA or
0 to 10 VDC signal. The output signal type is self-selecting; after you connect the
analog output to the controlled equipment, the output detects the analog input on
the controlled equipment and generates the appropriate analog signal for the
connected input.
You can set up an analog output to generate a direct acting or reverse acting
proportional output signal. You can also set up the output signal strength to
increase or decrease in either the direct acting or reverse acting mode. See Direct
and Reverse Control Actions for Analog Outputs on page 20 for more information.
System 450 also provides six integration constants that allow you to set up a
proportional plus integral control signal, which can provide more precise setpoint
control. See Proportional Plus Integral Control and Integration Constants on page
23 for information on determining the integration constant for an analog output.
For procedures on setting up analog outputs on standard control modules, see
Setting up an Analog Output on page 50.
System 450 control and expansion modules are available with one or two analog
outputs. See Table 11 on page 62 and Technical Specifications on page 67 for more
information about the System 450 Series module models that are used to build
standard control systems.
Direct and Reverse Control Actions for Analog Outputs
An analog output can be set up to provide one of four different control actions,
which allow you to match the output signal to the requirements of your control
system and the controlled equipment. The proportional output signal can provide
direct acting or reverse acting control. In addition, the output signal can be set up
to generate either the minimum or the maximum output signal strength at Setpoint.
A control ramp icon is displayed on the status screens for all analog outputs in your
control system. See Figure 2 on page 10. The displayed control ramp icon
represents the control action of the analog output signal. See Table 4 on page 22
for more information on analog output control actions and control ramp icons.
An analog output’s control action and the corresponding control ramp are
automatically determined by the values that you select in four analog output setup
screens:
•Setpoint value (SP) is the target value that the control system drives toward,
and along with the End Point, defines the output’s proportional band.