Setup And Adjustments; System 450 Component Requirements; Building A System 450 Module Assembly - Johnson Controls System 450 Series Installation Instructions And Operators Manual

Figure 3: Example System 450 Control System with an Ethernet Communications Module
Controlling a Cooling System with Condenser Fan Speed Control
A99 Temperature Sensor
Sn-2 Control Sensor in UI Display
( F ° Sensor Type)
P499 Pressure Transducer
Sn-1 Control Sensor in UI Display
( P500 Sensor Type)

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.
System 450™ Series Control Module with Ethernet Communications Installation Instructions
C450CEN-x
Communications
Module
RJ45
Ethernet
Port
L1
L2
Cooling Equipment
Control Circuit
L1
(24 to 240 VAC)
L2
Condenser Fan 2
Speed Control
Analog Input Circuit
6
C450YNN-1 C450SBN-x
Power Expansion Module
Module OUTR1
Condenser Fan 1
Speed Control
Analog Input Circuit
C450SQN-x
Expansion Module
OUTA2, OUTA3