Johnson Controls IOM3731 - User Manual

IOM3731 Input/Output Module Installation Guide
Application
The IOM3731 Input/Output Expansion Module (IOM) is
part of the Metasys
®
system Field Equipment Controller
family. IOM field controllers expand the number of I/
O points connected to a Network Automation Engine
(NAE), Network Control Engine (NCE), Field Equipment
Controller (FEC), or Advanced Application Field Equipment
Controller (FAC) to monitor and control a wide variety of
HVAC equipment.
IOM field controllers operate on an RS-485 BACnet
®
MS/
TP Bus and integrate into the web-based Metasys system.
Note: At CCT Release 10.1 and later, a new capability
was introduced allowing VMAs, FECs, and FACs to
communicate by using either the BACnet or the N2
field bus networking protocol. The operation of the
IOM Input/Output Module is not affected by the
selection of the BACnet or the N2 protocol in the host
controller, when the IOM is connected to the host
controller using the SA bus. Only the BACnet protocol
is supported when the IOM is connected directly to
the trunk using the FC bus.
North American Emissions Compliance
Canada
This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la Classe (A) respecte toutes
les exigences du Règlement sur le matériel brouilleur du
Canada.
United States
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference when this equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area may cause harmful interference, in which
case the users will be required to correct the interference
at their own expense.
Installation
Observe these guidelines when installing a controller:
• Transport the controller in the original container to
minimize vibration and shock damage.
• Verify that all parts shipped with the controller.
• Do not drop the controller or subject it to physical
shock.
Parts included
• One controller with removable terminal blocks (Power
and SA/FC bus are removable)
• One installation instructions sheet
Materials and special tools needed
• Three fasteners appropriate for the mounting surface
(M4 screws or #8 screws)
• One 20 cm (8 in.) or longer piece of 35 mm DIN rail and
appropriate hardware for DIN rail mount (only)
• Small straight-blade screwdriver for securing wires in
the terminal blocks
Physical features
*2410143322J*
Part No. 24-10143-322 Rev. J
2019-10-18
(barcode for factory use only)
MS-IOM3731

Johnson Controls IOM3731 Specifications

General

Model	IOM3731
Type	Input/Output Module
Communication Protocol	BACnet MS/TP
Number of Outputs	8
Mounting Type	DIN Rail
Output Type	Binary
Enclosure Material	Plastic
Number of Binary Outputs	8
Input Voltage	24 VAC
Input Type	Universal

Summary

Application Overview

IOM3731 Module Description

Module part of Metasys system, expands I/O points for HVAC equipment.

Emissions Compliance

Canada Compliance

Digital apparatus meets Canadian Interference-Causing Equipment Regulations.

United States FCC Compliance

FCC compliance for Class A digital device, radio frequency energy.

Installation Preparation

Installation Guidelines

Observe guidelines for safe and proper controller installation.

Included Parts

Lists components included with the controller, like terminal blocks and instructions.

Required Materials and Tools

Lists required fasteners, DIN rail, and screwdriver for installation.

Mounting Procedures

General Mounting Guidelines

Guidelines for mounting the controller securely and in appropriate locations.

Panel and Enclosure Mounting

Guidelines for mounting in panels or enclosures to ensure ventilation and prevent heat issues.

Physical Features and Callouts

Identifies physical features of the IOM3731 controller with descriptions and references.

DIN Rail Mounting

Procedures for mounting the controller horizontally on a 35 mm DIN rail.

Wall Mounting

Procedures for mounting the controller directly on a wall or flat vertical surface.

Wiring and Safety

Electric Shock Warning

Warning about disconnecting power before making electrical connections.

Personal Injury and Property Damage

Cautionary note about checking wiring connections before applying power.

Electrostatic Discharge Precautions

Guidelines for preventing damage to controller components from static discharge.

Terminal Blocks and Bus Ports

Input and Output Terminal Blocks

Describes location and function of input/output terminal blocks.

SA;FC Bus Terminal Block

Details on the removable 4-terminal plug for SA/FC bus connection.

FC Bus Wiring

Wiring instructions for connecting to an FC bus segment.

SA Bus Wiring

Wiring instructions for connecting to an SA bus segment.

Power Supply and Bus Connections

SA;FC Bus Port

Description of the RJ-12 port for SA/FC bus and wireless connections.

Supply Power Terminal Block

Details on wiring the 24 VAC supply power to the controller.

Wireless Network Applications

Configuration for using the controller with a ZFR/ZFR Pro Wireless Field Bus Router.

I;O Wiring Guidelines

Terminal Wiring Guidelines

Guidelines for functions, ratings, requirements for controller input/output terminals.

Input and Output Wiring

Guidelines for running low-voltage wiring, cable types, and cable length considerations.

I;O Ratings and Requirements

Terminal Blocks Functions and Ratings

Details on terminal blocks, functions, ratings, and requirements for I/O.

Cable Length Guidelines

Guidelines for cable length based on wire size for low-voltage inputs and outputs.

Maximum Cable Length Calculations

Cable Length vs. Load Current

Estimating max cable length relative to wire size and load current for inputs/outputs.

SA;FC Bus and Supply Power Wiring

Guidelines for SA/FC bus and 24 VAC supply power wiring.

Communications Bus and Power Supply

Terminal Block Ratings and Requirements

Ratings and requirements for communications bus and power supply terminal blocks.

Status LEDs and Descriptions

Explanation of controller status LED indicators and their meanings.

Troubleshooting the Controllers

Using status LEDs to troubleshoot controller issues.

Termination Details

Status LEDs and Descriptions

Details on LED states for SA/FC BUS and EOL indicators.

Termination Diagrams

Diagrams illustrating wiring for different types of inputs and outputs.

Setup and Adjustments

Setting Device Addresses

Procedures for setting unique device addresses using DIP switches.

Wireless Bus Address Settings

Instructions for setting switch 128 for wireless FC bus applications.

Controller Cover and Jumpers

SA;FC Bus Device Address Descriptions

Table detailing device address use based on switch 128 settings.

Removing the Controller Cover

Step-by-step instructions for safely removing the controller cover.

Binary Output Source Power Jumpers

Explanation of jumpers determining internal vs. external power for BOs.

End-of-Line (EOL) Switch

Setting the EOL Switch

Instructions on setting the EOL switch to ON or Off for bus termination.

Accessories and Specifications

Accessories Ordering Information

List of ordering codes for related accessories like transformers and displays.

Technical Specifications

Detailed technical specifications including voltage, power, ambient conditions, and processor.

Product Information

Technical Specifications Continued

Dimensions, weight, and compliance details for the controller.

Product Warranty

Information on the limited warranty coverage for the product.

Single Point of Contact

Contact information for different regions (APAC, Europe, NA/SA).