Emerson MultiFlex 168 User Manual

026-1704 Rev 6 06-APR-10
MultiFlex I/O Board
Installation and
Operation Manual

Emerson MultiFlex 168 Specifications

General

Brand	Emerson
Model	MultiFlex 168
Category	I/O Systems
Language	English

Summary

Overview of the MultiFlex Product Line

1.1. MultiFlex 16 Input Board

Details the MultiFlex 16 input board, its features, and compatibility.

1.2. MultiFlex Combination Input/Output Boards

Explains the features and models of MultiFlex combination I/O boards.

1.3.1. The MultiFlex RTU

Describes the MultiFlex RTU board for HVAC unit control.

1.3.2. The MultiFlex RCB

Details the MultiFlex RCB, an improved version of the RTU.

1.3.3. The MultiFlex CUB-II and CUB-TD

Explains the MultiFlex Condensing Unit Board (CUB) for single unit control.

1.3.4. The MultiFlex PAK

Describes the MultiFlex PAK for distributed pack control of compressors.

Mounting and Powering MultiFlex Boards

2.1. Snap-Track Installation

Explains how to install MultiFlex boards using a snap-track system.

2.3.1. Choosing Transformer Sizes

Guides on selecting appropriate transformer VA ratings for MultiFlex boards.

2.3.2. MultiFlex 16 Power Wiring

Provides wiring instructions for the MultiFlex 16 power connection.

2.3.3. MultiFlex Combination Input/Output Board Power Wiring

Explains power wiring for combination I/O boards, distinguishing new/old styles.

2.3.3.1. New-Style MultiFlex Combination I/O Boards (with Isolated Power Supply)

Details power wiring for new-style combination I/O boards with isolated power.

2.3.3.2. Old-Style MultiFlex Combination I/O Boards (No Isolated Power Supply)

Details power wiring for old-style combination I/O boards without isolated power.

The I/O Network Configuration

3.2. Network Configuration (Daisy Chains)

3.2.1. Maximum # of Boards on a Daisy Chain

3.3. Network ID Numbers

Explains the importance and assignment of unique network ID numbers.

3.3.1. Numbering the MultiFlex 16

3.3.2. Numbering for MultiFlex Combination I/O Boards

3.3.3. Addressing the 168DO

3.4. Setting the Baud Rate

3.5. Setting the Terminating Resistance Jumpers

I/O Board Input and Output Setup

4.1. The Inputs

4.1.1. Connecting Sensors to Input Boards

Details wiring sensors to input points, including wiring types and dip switches.

4.1.1.4. Input Type Dip Switches

4.2. The Relay Outputs

4.2.1. Output Fail-Safe Dip Switches

4.3. The Analog Outputs

4.4. The Digital Outputs

MultiFlex Board Status LEDs

5.3. Code A and Code B LEDs

Details the Code A and Code B LEDs indicating failure conditions.

Using the Hand-Held Terminal Interface

6.1. MultiFlex I/O Board Hand-Held Terminal Screens

Introduces the HHT interface for viewing board status and configuration.

6.1.1. Navigation

6.1.3. Board Address

6.1.5. Input/Output Select Menu

6.1.6. Input Screens

6.1.6.1. Input Status/Config Menu

6.1.6.4. Input Config

6.1.7. Relay Output Screens

6.1.8. Analog Output Screens

6.1.8.1. Analog Status/Override

6.1.9. Analog Fail-Safes

Allows setting analog output values during loss of communication.

6.1.10. Digital Status (PWM)

6.1.12.Config Fail % Screen

Relay Output Test Mode

7 Relay Output Test Mode

Explains how to activate and use relay output test mode via dip switches.