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Unitary
CONTROLLER-24 VAC/VDC
General ............................................................................ 3
Trademark Information ............................................... 3
Product Description...................................................... 3
Controller Part Numbers ............................................ 4
Dimensions ...................................................................... 4
Unitary Controller Large....................................... 4
Unitary Controller Small....................................... 5
Network Security .......................................................... 5
General Safety Instructions....................................... 5
Specifications ................................................................ 6
Electrical ........................................................................... 6
Operational Environment........................................... 6
Hardware........................................................................... 6
Communications ........................................................... 6
T1L Communication..................................................... 7
Supported Devices* ...................................................... 7
Weight and Dimensions.............................................. 7
Universal IO*.................................................................... 7
Wire Gauge Range......................................................... 8
Solid State Relay (SSR)................................................ 8
Relays ................................................................................. 8
Hardware overview....................................................... 9
System Overview............................................................ 9
Service Button................................................................. 10
Mounting ..................................................................... 10
Before Installation......................................................... 10
DIN Rail Mounting ........................................................ 10
Wall Mounting ................................................................ 11
Power Supply.............................................................. 12
General Information ..................................................... 12
Power Wiring.................................................................... 12
Power Wiring Examples............................................... 13
Grounding......................................................................... 13
Input / Output Wiring .............................................. 14
Wiring Requirements ................................................... 14
Internal Wiring Examples ........................................... 15
Terminal Connections.................................................. 17
UIO Wiring Examples ................................................... 19
SSR (DO) Wiring Examples ........................................ 20
Auxiliary Wiring Examples ........................................ 21
DO Relay Wiring Examples ........................................ 21
Network Concepts ..................................................... 22
The RS-485 Standard .................................................. 22
TIA/EIA 485 Cable Specifications .................... 22
IP Network Topologies ................................................. 22
Daisy Chain Topology .................................................. 22
Ring Topology.................................................................. 22
® U.S. Registered Trademark
Copyright © 2024 Honeywell Inc. • All Rights Reserved
INSTALLATION INSTRUCTIONS
BACnet™ IP Controller.............................................. 23
Connecting to an IP network .................................... 23
DHCP IP Configuration............................................... 23
Link-local addressing.................................................. 23
BACnet™ MS/TP Wiring........................................... 24
Auto Baud rate functionality..................................... 24
Termination Resistors ................................................. 24
Shield Termination ....................................................... 24
BACnet™ MS/TP Wiring Example........................... 25
Common Example........................................................ 25
BACnet™ MS/TP Controller .................................... 26
BACnet™ MS/TP Limitations ................................... 26
Physical Limitation ................................................ 26
AutoMAC limitation................................................ 26
Automatic MAC Addressing ...................................... 26
Set the MS/TP MAC Address.................................... 26
Set the Device Instance Number ...................... 27
T1L Communication standard ............................... 28
Daisy Chain Topology.................................................. 28
Ring Topology................................................................. 28
Modbus RTU................................................................ 29
Wiring Topology ............................................................. 29
Cables and Shielding................................................... 29
Modbus RS-485 Repeaters....................................... 29
Modbus Client Specifications.................................. 29
Modbus Compliance.................................................... 29
Modbus Considerations ............................................. 30
Sylk™ ............................................................................. 31
Supported Sylk™ devices............................................ 31
Sylk™ Wiring Example ................................................. 32
Troubleshooting......................................................... 33
LED Interface.................................................................. 34
Controller LED Status ................................................. 34
Bluetooth LED Status.................................................. 35
BACnet™ MS/TP LED Status.................................... 35
Modbus LED Status..................................................... 35
T1L LED Status.............................................................. 36
Service Pin LED Status ............................................... 36
Regulatory Information ........................................... 37
FCC Regulation.............................................................. 37
ISED non-interference disclaimer ......................... 37
Professional Installation Warning ................... 37
Wireless Connectivity .................................................. 37
CE Statement.................................................................. 38
Standards and Compliance ...................................... 38
Approvals and Certifications .................................... 38
31-00614-01
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Table of Contents
Related Manuals for Honeywell UN-RS0844MS24NMC
Summarization of Contents
General Unitary Controller Information
Product Description and Features
Overview of the Honeywell Unitary controllers, their capabilities, and integrated features like BLE.
Controller Dimensions and Part Numbers
Detailed dimensions for large and small controllers and explanation of part number configurations.
Network Security Guidelines
Recommendations for securing Unitary controllers against cyber risks, emphasizing private networks.
General Safety Instructions
Essential safety precautions for installing and operating Honeywell Unitary controllers.
Unitary Controller Specifications
Electrical Specifications
Details on rated input voltage, power consumption, frequency range, and electrical load types.
Operational Environment
Environmental conditions such as storage temperature, operating temperature, humidity, and protection ratings.
Hardware Specifications
Information on CPU, memory capacity, Ethernet ports, and LED indicators.
Communication Specifications
Supported protocols, IP addressing modes, and Sylk™ interface details.
Hardware Overview and Components
System Overview Diagram
Diagram illustrating the system architecture and how controllers connect to supervisors and other devices.
Service Button Functionality
Explains the behavior of the service button during power-up and normal operation for resets and diagnostics.
Mounting Procedures
Pre-Installation Guidelines
Recommendations for unit acclimatization and environmental considerations before installation.
DIN Rail Mounting
Step-by-step instructions for mounting the controller onto a standard DIN rail.
Wall Mounting Instructions
Detailed steps for securely mounting the controller to a wall or panel.
Power Supply and Wiring
Power Supply General Information
Important safety and compatibility information regarding power supply for the controllers.
Power Wiring Requirements
Guidelines for connecting power, including wire gauge and transformer capacity.
Power Wiring Examples
Illustrations of typical power wiring configurations for single and multiple controllers.
Grounding Guidelines
Instructions for proper grounding of the controller for safety and operational integrity.
Input/Output Wiring
Wiring Requirements for Terminals
Detailed requirements for wire gauge, stripping, and terminal connection.
Internal Wiring Diagrams
Illustrations showing internal wiring for large and small controllers.
Terminal Connections Overview
A comprehensive table listing all terminal connections and their functions.
Wiring Examples for I/O, SSR, and Relays
Examples for Universal IO, Solid State Relays, and DO Relays wiring configurations.
Network Concepts and Topologies
RS-485 Standard and Cable Specifications
Details on the RS-485 standard, cable requirements, and specifications for MS/TP buses.
IP Network Topologies
Describes recommended IP network topologies like daisy chain and ring for controllers.
BACnet™ MS/TP Network Topologies
Illustrates connection examples for BACnet™ MS/TP buses using signal common.
BACnet™ IP Controller Setup
Connecting to an IP Network
Information on connecting Unitary controllers to an IPv4 network via Ethernet ports.
IP Addressing Methods
Details on DHCP and Link-local addressing for IP configuration.
BACnet™ MS/TP Wiring
MS/TP Wiring Requirements
Guidelines for MS/TP communication, including baud rates and cable lengths.
Termination and Shielding
Instructions for installing termination resistors and proper shield grounding.
MS/TP Wiring Examples
Illustrations for connecting to a BACnet™ MS/TP bus.
BACnet™ MS/TP Controller Configuration
MS/TP Limitations and Default Values
Details on physical and AutoMAC limitations, and default controller values.
MAC Addressing Methods
Explanation of automatic MAC addressing and recommended ranges.
Setting MS/TP MAC and Device Instance
Instructions for setting the MS/TP MAC address using DIP switches and device instance number.
T1L Communication Standard
T1L Network Topologies
Describes T1L daisy chain and ring topologies for connecting controllers.
Modbus RTU Communication
Modbus RS-485 Requirements
Details on Modbus RS-485 interface, cable requirements, and repeaters.
Modbus Client Specifications
Information on supported Modbus rates, device limits, and address ranges.
Modbus Compliance and Considerations
Notes on Modbus compliance, supported rates, and operational considerations.
SYLK™ Communication
Supported SYLK Devices and Distances
Lists compatible Sylk™ wall modules and actuators and recommended maximum distances.
Troubleshooting Guide
Controller Features for Troubleshooting
Details on controller features like service button and LEDs for commissioning and troubleshooting.
LED Interface and Status Indicators
Controller LED Status Indicators
Explanation of controller status LEDs and their corresponding modes and visual indicators.
Communication LED Status
Details on LED status for Bluetooth, BACnet MS/TP, and Modbus communication.
Regulatory Information
FCC and ISED Compliance
Information regarding FCC and ISED regulations for radio frequency emissions.
Professional Installation Warning
Emphasizes the need for professional installation due to technology complexity.
Wireless Connectivity Details
Information about Bluetooth Low Energy (BLE) chip usage for secure communication.
Certifications and Compliance Statements
CE Statement and Approvals
Details on CE marking, WLAN restrictions, and product approvals.
Standards and RoHS Compliance
List of applicable standards, certifications, and RoHS conformity information.
Appendix: Sensor Data
Sensor Input Accuracy
Typical minimum accuracies for 10 K NTC and 20 K NTC sensors.
Sensor Failure Recognition
Thresholds for recognizing sensor failures (short-circuit and sensor-break) for various sensors.
Temperature Sensor Characteristics
Detailed resistance and terminal voltage characteristics for various temperature sensors.
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