Brochure

The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
R-203
Code No. LIT- 1900861
C450CEN Control Module with Communication
System 450™ Series Control Module with Network Communications
System 450 Control Series
Description
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 HVAC/R applications,
commercial process applications, and industrial process applications.
The System 450 control system is designed to replace System 350™
and System 27 control systems and to provide many additional
features and benefits with fewer than twenty model variations.
System 450 control modules provide a field-configurable
out-of-the-box solution. Most System 450 control modules can control
temperature, pressure, and humidity systems simultaneously.
A single C450 control module can be set up as a stand-alone control or
connected to expansion modules to control up to ten On/Off relay and
proportional analog outputs, based on any of the three available inputs.
System 450 Control Modules with Communications enable you to
connect System 450 control systems to Modbus® or Ethernet networks
for remote monitoring and setup. The Modbus communications control
module is an RS485, RTU-compliant slave device. The Ethernet
communications control module has an integral web server that can
deliver web pages through a direct connection, on your LAN, or across
the Internet.
Refer to the following documents for important product application
information, as well as detailed information on designing, installing,
setting up, and troubleshooting:
• System 450™ Series Modular Controls Product Bulletin
(LIT-12011458)
• System 450™ Series Modular Control Systems with
Communications Control Modules Technical Bulletin
(LIT-12011826)
• System 450™ Series Control Module with RS485 Modbus®
Communications Installation Instructions (Part No. 24-7664-2926)
• System 450™ Series Control Module with Ethernet
Communications Installation Instructions (Part No. 24-7664-2934)
Features
• Durable, compact, interchangeable modular components with
plug-together connectors and DIN rail or direct wall mount capability
eliminate field wiring between modules and allow you to quickly and
easily design, assemble, install, and upgrade your control systems.
• Versatile, multipurpose, field-configurable control modules and
expansion modules designed for global use allow you to create a
wide variety of application-specific control systems capable of
controlling temperature, pressure, or humidity, or all three
conditions simultaneously, with only a small suite of module models.
• Up to three hard-wired input sensors and up to ten relay or analog
outputs (in any combination) per control system allow you to build
complex custom control systems while reducing your control system
cost to only the cost of the required components.
• Control modules with bright backlit LCDs and four-button touch pad
user interfaces provide quick, clear, visual status of your
System 450 control system inputs and outputs with the touch of a
button and enable you to quickly and easily set up and adjust your
control system.
• An extensive suite of compatible temperature and humidity sensors,
and pressure transducers allows you to monitor and control a wide
range of HVAC/R and process conditions in a variety of standard
and global units of measurement.
• High input signal selection enables your control system to monitor a
temperature, pressure, or humidity condition with two or three
sensors (of the same type) and control your system outputs based
on the highest condition value sensed by the referenced sensors.
• Differential control enables your control system to monitor and
maintain a temperature, pressure, or humidity differential between
two sensor points within a system, process, or space.
• Ethernet communication capability through a built-in web server
(Ethernet control modules only) allows you to monitor your control
system status and set up or change the parameters by means of a
direct Ethernet cable connection, through a LAN connection, or over
the Internet. The built in web server delivers user-friendly web
pages to client browsers on a desktop, laptop, tablet, or smart
device.
• The web page server on Ethernet communication modules provides
a simple, intuitive web interface for easy remote monitoring, setup,
adjustment and remote monitoring of your control systems across
Ethernet networks.
• RS485, RTU-compliant Modbus® network communication
capability (Modbus control modules only) enables a head-end
RS485 Modbus master controller to read and write control system
status and setup parameters to the System 450 Modbus
communication control module.
• Password protection for local access (Ethernet and Modbus control
modules only) and password protection for remote access (Ethernet
control module only) deters unauthorized changes to the control
system settings, but allows local and remote monitoring of your
control system status.
• Analog output signal limiting features (communication control
modules only) allow you to select the rate and condition range at
which the control updates the analog output signal, potentially
reducing wear on the controlled equipment.
• Binary input with time delay (communication control modules only)
allows you to use an external set of dry contacts and selectable time
delays to control relay outputs.