McQuay WME Installation Manual

Installation and Maintenance Manual

IM 993-1

Magnitude Modbus

Communication Module

Chiller Unit Controller

Group: Controls Part Number: IM 993 Date: July 2010 Supercedes: IM 993

Magnitude Frictionless Centrifugal Chiller, Single-Compressor Model WME

Use this manual to physically install the Modbus Communication Module into the chiller unit controller and connect the chiller unit controller to your network. Use the appropriate McQuay Engineering Data (ED), known as the Protocol Information document, to integrate the unit into your network. The Protocol Information document contains addressing details, protocol information, and a list of the data points available to the network. See the Reference Documents section of this manual for details. Magnitude Chiller control integration literature is available from your local McQuay International sales representative and www.mcquay

NOTICE

.com.

Table of Contents

Figures .................................................................................................................................................. 2

Revision History ...................................................................................................................................3

Reference Documents........................................................................................................................... 3

Limited Warranty.................................................................................................................................. 3

General Information..............................................................................................................4

Description ............................................................................................................................ 5

Description............................................................................................................................................ 5

Application........................................................................................................................................ 5

Component Data ............................................................................................................................... 5

Light Emitting Diodes (LEDs).......................................................................................................... 6

Modbus Network Connector............................................................................................................. 7

J8 Jumper.......................................................................................................................................... 7

Installation............................................................................................................................. 8

Contents of the Modbus Communication Module Kit.......................................................................... 8

Installing a new Modbus Communication Module............................................................................... 8

Replacing an Existing Modbus Communication Module..................................................................... 9

Integration............................................................................................................................ 10

Connecting to the Network................................................................................................................. 10

Modbus Network Topology............................................................................................................ 10

Configuring the Modbus Communication Module............................................................................. 10

Modbus Addressing........................................................................................................................ 10

Configuring the Modbus Communication Module using the OITS Display.................................. 10

Configurable Parameters................................................................................................................. 12

Service Information.............................................................................................................13

Test Procedures................................................................................................................................... 13

Parts List............................................................................................................................................. 13

Installation Kit ................................................................................................................................ 13

Figures

Figure 1. Modbus Communication Module Attached to the Magnitude Chiller I/O Backplane.......... 5

Figure 2. Modbus Communication Module Major Components.......................................................... 6

Figure 3. OITS Display of Network Parameters – BAS1................................................................... 11

Figure 4. OITS Display of Network Parameters – BAS2................................................................... 12

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Revision History

IM 993 April 2010 Initial release. IM 993-1 July 2010 Changed kit part number in Parts List.

Reference Documents

Number Company Title Source

ED 15118 McQuay International

OM 1034 McQuay International Magnitude Frictionless Centrifugal Chiller

- Modbus Modbus over Serial Line Specification &

Limited Warranty

Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to www.mcquay.com

Notice

McQuay International reserves the right to change any information contained herein without prior notice. The user is responsible for determining whether this software is appropriate for his or her application.

™ ® The following are trademarks or registered trademarks of their respective companies. Modbus from Schneider Electric, Inc.; Windows from Microsoft Corporation; Daikin McQuay, Magnitude and MicroTech from McQuay International.

Protocol Information for Magnitude Chiller Unit Controllers, Modbus Networks

Operation and Maintenance Manual

Implementation Guide v1.0

www.mcquay.com

www.Modbus.org

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General Information

This manual contains the information you need to install the Modbus® Communication Module on a Magnitude™ Chiller Unit Controller, incorporate it into the Modbus network, and maintain it.

Dangers indicate a hazardous situation that will result in death or serious injury if not avoided.

Warnings indicate potentially hazardous situations, which can result in property damage, severe personal injury, or death if not avoided.

Cautions indicate potentially hazardous situations, which can result in personal injury or equipment damage if not avoided.

Electric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Only personnel knowledgeable in the operation of the equipment being controlled must perform connections and service to the Magnitude Chiller Unit Controller.

Static sensitive components. Can cause equipment damage.

Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs while power is applied to the panel.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It 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 the equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense. McQuay International disclaims any

liability resulting from any interference or for the correction thereof.

DANGER

WARNING

CAUTION

! WARNING

CAUTION

NOTICE

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