Product Overview

System 450™ Series Modular Controls Product Bulletin4
System 450 Control Modules
The System 450 control module is the supervisor of
your control system and the interface for the system’s
inputs, supply power, and outputs. Figure 2 shows an
example of the available System 450 control modules.
See Table 3 in Ordering Information
for information on
all of the available control modules.
All System 450 control systems require a control
module for setting up the control system’s inputs and
outputs, monitoring the control system’s status, and
controlling the system’s outputs.
System 450 control modules are capable of monitoring
up to three inputs and controlling up to ten outputs that
can be any combination of relay and analog outputs
(provided by expansion modules).
User-Friendly LCD and Touchpad UI
System 450 control modules feature a backlit LCD
screen, which during normal operation displays the
real-time status of the sensors that are set up in your
control system.
The four-button touchpad enables you to quickly scroll
through and view the output status screens and access
the system setup screens to set up or adjust the
sensors and outputs in your control system.
After you have assembled and powered your control
system, and selected the Sensor Types in the UI, the
control module automatically determines the output
numbers and output types. The control module then
generates the menu-based setup screens and supplies
all of the default setup values required to set up your
custom control system.
Control Modules with Relay Outputs
C450CBN-x and C450CCN-x model control modules
have SPDT relay output.
Control Modules with Analog Outputs
C450CPN-x and C450CQN-x control module models
have analog output (0–10 VDC or 4–20 mA).
Reset Control Modules with Real-Time Clock and
Relay Output
C450RxN-x Reset Control models are SPDT relay
control modules. C450RxN-x reset control modules
provide many of the features of the standard control
modules for temperature and humidity control. In
addition, these modules provide temperature and
humidity reset, real-time setback, and load balancing
(equal runtime) capability.
Note: C450RxN-x Reset Control models control
temperature and humidity, but not pressure.
Control Module with 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 an 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 configured for High Input Signal Selection,
which enables precise and efficient EC motor speed
control on multi-circuit condensing units.
Figure 2: System 450 Control Module
with Two Relay Outputs