Johnson Controls System 450 Control Series Data Sheet

System 450 Control System with a Control, Power,

and Expansion Module

System 450 Control Series

System 450™ Series Modular Controls

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.

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 by means of a direct connection, on your LAN, or across the Internet.

System 450 Reset Control Modules provide many of the features of the standard models for temperature and humidity control. In addition, these modules provide setpoint reset, real-time setback scheduling, and run-time balancing (equal run time) capability.

The System 450 Control Module with Hybrid Analog Output has a single self-selecting analog output to optimize and extend the controlled speed range of variable speed electronically commutated (EC) motors.

Refer to the following documents for important product application information.

• System 450™ Series Modular Controls Product Bulletin

(LIT-12011458)

• System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin (LIT-12011459)

• System 450™ Series Modular Control Systems with Reset Control Modules Technical Bulletin (LIT-12011842)

• System 450™ Series Modular Control Systems with Communications Control Modules Technical Bulletin (LIT-12011826)

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.

Code No. LIT-1900549

• multipurpose, all-in-one control modules enable simple stand-alone, single-module control systems that are temperature, pressure, and humidity capable out of the box and easy to set up in the field to replace a wide variety of OEM HVAC/R and process controls.

• 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.

The Reset Control modules have additional features:

• adjustable minimum and maximum setpoint temperatures (reset control modules only) enable compliance with the manufacturer’s specifications for your controlled HVAC/R and process equipment.

• selectable shutdown-high and shutdown-low temperature settings (reset control modules only) saves you energy by shutting down controlled equipment when the ambient temperature either rises or drops to a point where heating or cooling is no longer required.

• real time clock and adjustable setback temperature (reset control modules only) save you energy by setting back heating, cooling, or humidity setpoints during scheduled unoccupied periods (24-hour day, 7-day week schedule).

• user-defined reset control capability (reset control modules only) saves you energy in a wide variety of temperature and humidity reset control applications by adjusting the temperature or humidity control loop, based on changes in ambient outdoor temperature or other uncontrolled condition.

The performance specifications are nomina l and con form to accep table ind ustry stand ards. For applicati ons at con ditions be yond these specification s, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

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The Control Modules with Communications have additional features:

• 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.

Applications

You can create a wide variety of custom, application-specific control systems with System 450 modules. The following are some common control application examples:

• Temperature control

• Pressure control

• Humidity control

• Multipurpose control

• Reset and setback control

• High input-signal selection

• Differential control

Temperature Control

• Temperature monitoring and alarming

• On/Off staged control of boilers and chillers

• Proportional stage control of boilers and chillers

• Boiler and chiller pump control

• Heating and cooling control with deadband

• Floating temperature control of damper and valve actuators

• Cooling tower fan speed/stage control based on water temperature

• Supply, make-up, and mixed air temperature control

• Temperature actuated valve control

• Supply and make-up air damper and fan control

• Condenser fan staging or speed control based on condenser temperature

Refrigerant Pressure Control

• Condenser fan cycling and stage control

• Multispeed condenser fan control

• Floating pressure control of damper and valve actuators

• Condenser fan speed and damper control

• High and low pressure cutout control

• Staged compressor control

• Cooling tower fan speed control based on high-side pressure

• Direct speed control of electronically commutated (EC) condenser fan motors (C450CPW-100 model)

Other Pressure Control

• Relief damper and fan control for building pressurization

• Constant static pressure control

Humidity Control

• On/Off humidification and dehumidification control

• Proportional humidification and dehumidification control

• Multistage humidification and dehumidification control

• Humidity monitoring and alarming

Multipurpose Control

• Temperature and pressure based refrigeration rack control

• Temperature and humidity control of wine cellars and greenhouses

• Temperature, humidity, and static pressure control of clean rooms and greenhouses

• Dehumidification with reheat control

Reset Control

• Boiler supply water temperature reset control based on outside air temperature

• Chiller supply water temperature reset control based on outside air temperature

• VAV zone temperature control based on outside air temperature

• Humidity reset based on outside air temperature

• Staged applications with runtime balancing

• Real-time Occupied/Unoccupied Setback

High Input Signal Selection

• Pressure-based fan speed or fan cycling control on multi-circuit condensers

• Temperature-based fan speed or fan cycling control on multi-circuit condensers

Differential Control

• Air and fluid pump-flow monitoring and alarming

• Air and fluid filter status monitoring and alarming

• Chiller barrel flow monitoring, control, and alarming

• Solar air and water heating applications

Note: Communications modules add network communication to any application of your choosing, except those requiring reset, setback, or EC motor control.

Repair Information

If a System 450 module fails to operate within its specifications, replace the module. For a replacement module, contact your Johnson Controls® representative.

The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

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System 450 Control Module Capabilities

Control by ________ System 450 Control Modules

Standard Communications Reset Hybrid

C450CPN-3C C450CQN-3C C450CBN-3C C450CCN-3C

Temperature   Pressure  - 

Humidity  

Combination of Conditions  

On/Off Relay Control  

Analog Proportional Control (Direct and Reverse Action)

Analog Proportional Plus Integral Control (Direct and Reverse Action)

Combination of On/Off Relay and Analog Output Control

Stand-Alone Control  - 

Multi-Stage Control (Relay or Analog)

Network Communications -  -High Input Signal Selection  -  Differential Control  - 

Output Signal Limiting Output Signal Update Rate Output Signal Deadband

Binary Input Control for Relay Outputs

On/Off Duration Time Control -  -Temperature and Humidity Reset Control --  - Scheduling and Temperature Setback Control --  - Reset Setpoint Control --  - Setback Scheduling --  - Run-Time Balancing --  - Hybrid Analog Output Control -- -

1. Only on output OUTA1.

 

-  --

C450CEN-1C C450CRN-1C

Controlled Condition

Control Capabilities

C450RBN-3C C450RCN-3C

C450CPW-100C



The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

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Selection Charts

System 450 Modules and Accessories Ordering Information

Product Code

Product Description

Number

C450CBN-3C Standard Control Module with LCD, Four-Button Touchpad UI, and Relay Output; provides one relay output (SPDT line-voltage relay) for

C450CCN-3C Standard Control Module

C450CEN-1C Control Module with Ethernet Communications, LCD, and Four-Button Touchpad UI. (No onboard outputs available on control modules

C450CPN-3C Standard Control Module with LCD, Four-Button Touchpad UI, and Analog Output; provides one analog output (0 to 10 VDC or 4 to

C450CPW-100C Hybrid Analog Output Control Module with LCD, Four-Button Touchpad UI, Hybrid Analog Output and Optional High Input Signal Select;

C450CQN-3C Standard Control Module with LCD and Four-Button Touchpad UI, and Analog Output; provides two analog outputs (0 to 10 VDC or

C450CRN-1C Control Module with RS485 Modbus Communications, LCD, and Four-Button Touchpad UI. (No onboard outputs available on control

C450RBN-3C Reset Control Module with LCD, Four-Button Touchpad UI, and SPDT relay output; provides one SPDT output relay. One A99BC-25C

C450RCN-3C Reset Control Module with LCD, Four-Button Touchpad UI, and SPDT relay output; provides two SPDT output relays. One A99BC-25C

C450SBN-3C Relay Output Expansion Module; provides one SPDT line-voltage relay output. C450SCN-3C Relay Output Expansion Module; provides two SPDT line-voltage relay outputs. C450SPN-1C Analog Output Expansion Module; provides one analog output (0 to 10 VDC or 4 to 20 mA self-selecting signal) for proportional control. C450SQN-1C Analog Output Expansion Module; provides two analog outputs (0 to 10 VDC or 4 to 20 mA self-selecting signals) for proportional control . C450YNN-1C Power Module; provides 24 V to System 450 Module Assembly; 120 VAC or 240 VAC supply power input terminals. BKT287-1R DIN Rail; 0.30 m (12 in.) long BKT287-2R DIN Rail; 1 m (39-1/3 in.) long BKT287-3R DIN Rail; 0.61 m (24 in.) long BKT287-4R DIN Rail; 0.36 m (14 in.) long PLT344-1R DIN Rail End Clamps (2 clamps) WHA-C450-100C System 450 module connection extension cable, 100 cm (3.3 ft) long

SPDT control.

for SPDT control.

with network communications capabilities.)

20 mA self-selecting signal) for proportional control.

provides one hybrid analog output and optional high input signal select primarily used for variable-speed EC motor speed control. Only Analog Output 1 (OUTA1) can be configured as a hybrid analog output and/or use the High Input Signal Selection feature. These features are not available for any of the other outputs in a System 450 control system that uses the C450CPW-100C as the control

module.

4 to 20 mA self-selecting signals) for proportional control.

modules with network communications capabilities.)

temperature sensor with 0.25 m (9-1/4 in.) silicon leads and one A99BC-300C temperature sensor with 3 m (9 ft 10 in.) silicon leads are included in the box with the Reset Control Module.

with LCD, Four-Button Touchpad UI, and Relay Output; provides two relay outputs (SPDT line-voltage relays)

System 450 Compatible A99B Temperature Sensors and Accessories Ordering Information1 (Part 1 of 2)

Product Code

Product Description

Number

A99BA-200C PTC Silicon Sensor with Shielded Cable; Cable Length 2 m (6-1/2 ft); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BB-25C PTC Silicon Sensor with PVC Cable; Cable Length 0.25 m (9-3/4 in.); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BB-200C PTC Silicon Sensor with PVC Cable; Cable Length 2 m (6-1/2 ft); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BB-300C PTC Silicon Sensor with PVC Cable; Cable Length 3 m (9-3/4 ft); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BB-500C PTC Silicon Sensor with PVC Cable; Cable Length 5 m (16-3/8 ft); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BB-600C PTC Silicon Sensor with PVC Cable; Cable Length 6 m (19-1/2 ft); Sensor Temperature Range: -40 to 120°C (-40 to 250°F)

A99BC-25C PTC Silicon Sensor with High Temperature Silicon Cable; Cable Length 0.25 m (9-3/4 in.);

A99BC-300C PTC Silicon Sensor with High Temperature Silicon Cabl e; Cable Length 3 m (9-3/4 ft)

A99BC-1500C PTC Silicon Sensor with High Temperature Silicon Cable; Cable Length 15 m (49 ft)

BOX10A-600R PVC Enclosure for A99 Sensor; Includes Wire Nuts and Conduit Connector (for Outdoor Sensor)

Cable Jacket Temperature Range: -40 to 100°C (-40 to 212°F)

Sensor Temperature Range: -40 to 120°C (-40 to 250°F) Cable Jacket Rated for Full Sensor Temperature Range.

The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

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Johnson Controls System 450 Control Series Data Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual