Allen-Bradley Entek XM-123 User manual

XM-123

Aeroderivative

Module

Firmware Revision 4

Users Guide

Important User Information

Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Safety Guidelines for the Application, Installation and

Maintenance of Solid State Controls (Publication SGI-1.1 available from your local

Rockwell Automation sales office or online at http://www.ab.com/manuals/gi)

describes some important differences between solid state equipment and hard-wired

electromechanical devices. Because of this difference, and also because of the wide

variety of uses for solid state equipment, all persons responsible for applying this

equipment must satisfy themselves that each intended application of this equipment is

acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or

consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes.

Because of the many variables and requirements associated with any particular

installation, Rockwell Automation, Inc. cannot assume responsibility or liability for

actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of

information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written

permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

XM is a registered trademark of Entek IRD International Corporation, a Rockwell Automation company.

DeviceNet is a trademark of the Open DeviceNet Vendor Association (ODVA).

Microsoft and Windows are registered trademarks of the Microsoft Corporation.

All other trademarks are the property of their respective holders and are hereby acknowledged.

WARNING

Identifies information about practices or circumstances that can

cause an explosion in a hazardous environment, which may lead

to personal injury or death, property damage, or economic loss.

IMPORTANT

Identifies information that is critical for successful application

and understanding of the product.

ATTENTION

Identifies information about practices or circumstances that can

lead to personal injury or death, property damage, or economic

loss. Attentions help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

SHOCK HAZARD

Labels may be located on or inside the drive to alert people that

dangerous voltage may be present.

BURN HAZARD

Labels may be located on or inside the drive to alert people that

surfaces may be dangerous temperatures.

European Communities (EC)

Directive Compliance

If this product has the CE mark it is approved for installation within the European

Union and EEA regions. It has been designed and tested to meet the following

directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EEC Electromagnetic

Compatibility (EMC) by applying the following standards, in whole or in part,

documented in a technical construction file:

• EN 61000-6-4 EMC — Generic Standards, Part 6-4 — Emission Standard for

Industrial Environments (Class A)

• EN 61000-6-2 EMC — Generic Standards, Part 6-2 — Immunity Standard for

Industrial Environment

• EN 61326-6-2 Electromagnetic Equipment for Measurement, Control, and

Laboratory Use — Industrial EMC Requirements

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage by applying

the safety requirements of EN 61131-2 Programmable Controllers, Part 2 —

Equipment Requirements and Tests.

v Publication ENMON-UM123A-EN-P - October 2004

Table of Contents

Chapter 1

Introduction

Introducing the XM-123 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

XM-123 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Using this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 2

Installing the XM-123

Aeroderivative Module

XM Installation Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Grounding Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mounting the Terminal Base Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Interconnecting Terminal Base Units . . . . . . . . . . . . . . . . . . . . . . . 13

Connecting Wiring for Your Module . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Terminal Block Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Connecting the Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Connecting the Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Connecting the Tachometer Signal. . . . . . . . . . . . . . . . . . . . . . . . . 21

Connecting the Buffered Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 22

Connecting the Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Connecting the Remote Relay Reset Signal . . . . . . . . . . . . . . . . . . 33

Connecting the Setpoint Multiplication Switch . . . . . . . . . . . . . . . 34

Connecting the 4-20mA Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Serial Port Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DeviceNet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Mounting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Module Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Basic Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Powering Up the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Manually Resetting Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Chapter 3

Configuration Parameters

Channel Transducer Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Channel Signal Processing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 49

Measurement Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Overall Measurement Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Aeroderivative Measurement Parameter. . . . . . . . . . . . . . . . . . . . . 51

Tracking Measurement Parameters. . . . . . . . . . . . . . . . . . . . . . . . . 52

Bandpass Measurement Parameters . . . . . . . . . . . . . . . . . . . . . . . . 53

Speed Measurement Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Publication ENMON-UM123A-EN-P - October 2004

Table of Contents vi

Tachometer Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Tachometer Transducer Parameters . . . . . . . . . . . . . . . . . . . . . . . . 54

Tachometer Signal Processing Parameters . . . . . . . . . . . . . . . . . . . 55

Alarm Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Relay Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4-20mA Output Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Triggered Trend Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

SU/CD Trend Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

I/O Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Monitor Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Alarm and Relay Status Parameters . . . . . . . . . . . . . . . . . . . . . . . . 74

Device Mode Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Appendix A

Specifications

Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Appendix B

DeviceNet Information

Electronic Data Sheets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Changing Operation Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Transition to Program Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Transition to Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

XM Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Invalid Configuration Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

XM-123 I/O Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Poll Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

COS Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Bit-Strobe Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

ADR for XM Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Appendix C

DeviceNet Objects

Identity Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

DeviceNet Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Assembly Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Connection Object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Discrete Input Point Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Parameter Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Acknowledge Handler Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Alarm Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Band Measurement Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Channel Object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Device Mode Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Overall Measurement Object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Relay Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Speed Measurement Object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Publication ENMON-UM123A-EN-P - October 2004

Table of Contents vii

Tachometer Channel Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Transducer Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Vector Measurement Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

4-20mA Output Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Glossary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

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Table of Contents viii

1 Publication ENMON-UM123A-EN-P - October 2004

Chapter

1

Introduction

This chapter provides an overview of the XM-123 Aeroderivative module. It

also discusses the components of the module and Customer Support.

Introducing the XM-123

Module

The XM-123 Aeroderivative module is a member of the Entek XM

®

Series, a

family of DIN rail mounted condition monitoring and protection modules that

operate both in stand-alone applications or integrate with Programmable

Logic Controllers (PLCs) and control system networks.

The XM-123 is a 2-channel monitor designed specifically for monitoring

aeroderivative gas turbine engines, such as the General Electric LM2500

engine. The module can be configured, per channel, to perform either tracking

filter or bandpass filter while it continuously measures each channel’s

broad-band overall level.

The module can power and accept input from standard eddy current probe

systems and Integrated Electronics Piezo Electric (IEPE) accelerometers. The

XM-123 can also accept signals from most standard voltage output

measurement devices such as a velocity or pressure transducer. In addition to

vibration inputs, the XM-123 accepts one tachometer input to provide speed

measurements and order tracking functions.

The XM-123 also includes a single on-board relay (expandable to five), two

4-20mA outputs, and a buffered output for each input. The module can collect

data under steady-state and startup/coast-down conditions, and monitor up to

12 alarms making the module a complete monitoring system.

The XM-123 can operate stand-alone, or it can be deployed on a standard or

dedicated DeviceNet network where it can provide real-time data and status

information to other XM modules, PLCs, distributed control systems (DCS),

and Condition Monitoring Systems.

For information about See page

Introducing the XM-123 Module 1

XM-123 Components 2

Using this Manual 3

Customer Support 4

Publication ENMON-UM123A-EN-P - October 2004

2 Introduction

The module can be configured remotely via the DeviceNet network, or locally

using a serial connection to a PC or laptop. Refer to Chapter 3 for a list of the

configuration parameters.

XM-123 Components

The XM-123 module consists of a terminal base and an instrument module.

The XM-123 Aeroderivative module and the XM-940 Dynamic Measurement

Terminal Base are shown below.

Figure 1.1 XM-123 Module Components

• XM-940 Dynamic Measurement Module Terminal Base - A DIN rail

mounted base unit that provides terminations for all field wiring

required by XM dynamic measurement modules, including the XM-123.

• XM-123 Aeroderivative Module - The module mounts on the XM-940

terminal base via a keyswitch and a 96-pin connector. The module

contains the measurement electronics, processor, relay, and serial

interface port for local configuration.

A

E

R

O

D

E

R

I

V

A

T

I

V

E

1

4

0

-

V

A

D

0

2

-

0

1

R

A

XM-940 Dynamic Measurement Module

Terminal Base Unit

Entek Cat. No. 1440-TB-A

XM-123 Aeroderivative Module

Entek Cat. No. 1440-VAD02-01RA

IMPORTANT

The XM-441 Expansion Relay module may be connected

to the XM-123 module via the XM-940 terminal base.

When connected to the module, the Expansion Relay

module simply "expands" the capability of the XM-123 by

adding four additional epoxy-sealed relays. The XM-123

controls the Expansion Relay module by extending to it the

same logic and functional controls as the on-board relay.

Publication ENMON-UM123A-EN-P - October 2004

Introduction 3

Using this Manual

This manual introduces you to the XM-123 Aeroderivative module. It is

intended for anyone who installs, configures, or uses the XM-123

Aeroderivative module.

Organization

To help you navigate through this manual, it is organized in chapters based on

these tasks and topics.

Chapter 1 “Introduction” contains an overview of this manual and using

Rockwell Automation Integrated Condition Monitoring Technical Support

services.

Chapter 2 “Installing the XM-123 Aeroderivative Module” describes how to

install, wire, and use the XM-123 module.

Chapter 3 “Configuration Parameters” provides a complete listing and

description of the XM-123 parameters. The parameters can be viewed and

edited using the XM Serial Configuration Utility software and a personal

computer.

Appendix A “Specifications” lists the technical specifications for the XM-123

module.

Appendix B “DeviceNet Information” provides information to help you

configure the XM-123 over a DeviceNet network.

Appendix C "DeviceNet Objects" provides information on the DeviceNet

objects supported by the XM-123 module.

For definitions of terms used in this Guide, see the Glossary at the end of the

Guide.

Document Conventions

There are several document conventions used in this manual, including the

following:

The XM-123 module is referred to as XM-123, device, or module throughout

this manual.

TIP

A tip indicates additional information which may be

helpful.

Publication ENMON-UM123A-EN-P - October 2004

4 Introduction

Customer Support

If you are under warranty or have an active ESAFE Agreement, Rockwell

Automation Integrated Condition Monitoring Technical Support provides a

variety of customer support services for Entek products. In the United States

you can reach the Technical Support Hotline by dialing 1-800-368-3547

Monday through Friday 8:00 a.m.–7:00 p.m. eastern time. You can send a fax

detailing your questions or comments 24 hours a day by dialing (513)576-4213.

Please address the fax to the Technical Support department. You can also

reach Technical Support from your computer.

• Send questions or comments to raenteksuppor[email protected].

• Visit our web site at http://support.rockwellautomation.com/entek/.

For support outside of the United States, please contact your local Rockwell

Automation office. You can find worldwide contact information at

http://www.rockwellautomation.com. If your local support representative is

not available, please contact the U.S. Technical Support department.

EXAMPLE

This convention presents an example.

5 Publication ENMON-UM123A-EN-P - October 2004

Chapter

2

Installing the XM-123 Aeroderivative Module

This chapter discusses how to install and wire the XM-123 Aeroderivative

module. It also describes the module indicators and the basic operation of the

module.

For information about See page

XM Installation Requirements 6

Mounting the Terminal Base Unit 11

Connecting Wiring for Your Module 14

Mounting the Module 39

Module Indicators 40

Basic Operations 43

ATTENTION

Environment and Enclosure

This equipment is intended for use

in a Pollution Degree 2

Industrial environment, in overvoltage Category II applications

(as defined in IED publication 60664–1), at altitudes up to 2000

meters without derating.

This equipment is supplied as “open type” equipment. It must be

mounted within an enclosure that is suitably designed for those

specific environmental conditions that will be present, and

appropriately designed to prevent personal injury resulting from

accessibility to live parts. The interior of the enclosure must be

accessible only by the use of a tool. Subsequent sections of this

publication may contain additional information regarding specific

enclosure type ratings that are required to comply with certain

product safety certifications.

See NEMA Standards publication 250 and IEC publication

60529, as applicable, for explanations of the degrees of

protection provided by different types of enclosures.

Publication ENMON-UM123A-EN-P - October 2004

6 Installing the XM-123 Aeroderivative Module

XM Installation

Requirements

This section describes wire, power and grounding requirements for an XM

system.

Wiring Requirements

Use solid or stranded wire. All wiring should meet the following specifications:

• 12 to 28 AWG

• Recommended strip length 8 millimeters (0.31 inches)

• Minimum insulation rating of 300V

Power Requirements

Before installing your module, calculate the power requirements of all modules

in each chassis. The total current draw through the side connector cannot

exceed 3A. Refer to the specifications for the specific modules for power

requirements.

Figure 2.1 is an illustration of wiring modules using separate power

connections.

ATTENTION

See the XM Documentation and Configuration Utility CD

for Hazardous Locations installation drawings. The XM

Documentation and Configuration Utility CD is packaged

with the XM modules.

ATTENTION

A separate power connection is necessary if the total

current draw of the interconnecting modules is greater than

3A.

Publication ENMON-UM123A-EN-P - October 2004

Installing the XM-123 Aeroderivative Module 7

Figure 2.1 XM Modules with Separate Power Connections

Grounding Requirements

Use these grounding requirements to ensure safe electrical operating

circumstances, and to help avoid potential electromagnetic interference (emi)

and ground noise that can cause unfavorable operating conditions for your

XM system.

DIN Rail Ground

The DIN rail must be grounded. It can be connected to chassis or earth

ground using either the DIN Rail Grounding Block (Figure 2.2) or DIN Rail

mounting bolts (Figure 2.3). If the DIN Rail is coated with a non-conductive

material (anodized, painted, etc.), scrape the material around the mounting

hole.

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

Power

Supply

DYNAMIC MEASUREMENT

1440-VST02-01RA

DYNAMIC MEASUREMENT

1440-VST02-01RA

POSITION

1440-TSP02-01RB

MASTER RELAY

1440-RMA00-04RC

Publication ENMON-UM123A-EN-P - October 2004

8 Installing the XM-123 Aeroderivative Module

Figure 2.2 DIN Rail Grounding Block

Figure 2.3 DIN Rail Mounting Bolts

XM System Ground

The XM system must be connected to chassis or earth ground at a single

point. This means that all grounds are connected or tied down at one location

to prevent ground loops between equipment. It is highly recommended that

the single point be at an XM module (24V Common terminal), as shown in the

Figure 2.4, or at the 24V power supply. Use 14 AWG wire.

IMPORTANT

The 24V Common and Signal Common terminals are

internally connected. They are isolated from Chassis GND

unless they are connected to Chassis GND as described in

this section.

Publication ENMON-UM123A-EN-P - October 2004

Installing the XM-123 Aeroderivative Module 9

Figure 2.4 Grounded XM System

For multiple XM systems that share the same power supply, only one chassis

or earth ground connection is needed, as is shown in Figure 2.5.

Figure 2.5 Grounded XM Systems Sharing Power Supply

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

DYNAMIC MEASUREMENT

1440-VST02-01RA

DYNAMIC MEASUREMENT

1440-VST02-01RA

Power

Supply

The earth ground connection is made at only one of the XM modules.

Not at each module.

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

Power

Supply

DYNAMIC MEASUREMENT

1440-VST02-01RA

DYNAMIC MEASUREMENT

1440-VST02-01RA

POSITION

1440-TSP02-01RB

MASTER RELAY

1440-RMA00-04RC

Publication ENMON-UM123A-EN-P - October 2004

10 Installing the XM-123 Aeroderivative Module

For multiple XM systems that do not share the same power supply, each XM

system must be connected to chassis or earth ground. Conversely, XM systems

that do not share a common single-point ground require their own power

supply. See Figure 2.6.

Figure 2.6 Grounded XM Systems with Separate Power Supplies

Transducer Ground

Make certain the transducers are electrically isolated from chassis ground.

Cable shields must be grounded at one end of the cable, and the other end left

floating or not connected. It is recommended that where possible, the cable

shield be grounded at the XM terminal base and not at the transducer.

DeviceNet Power Supply Ground

The DeviceNet network power supply must also be grounded to earth or

chassis ground at a single point. XM modules do not require an external

DeviceNet power supply. In an XM-only system installation, connect

DeviceNet V- to earth ground at one of the XM modules, as shown in Figure

2.7.

Power

Supply

1440-REX00-04RD

Power

Supply

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

DYNAMIC MEASUREMENT

1440-VST02-01RA

DYNAMIC MEASUREMENT

1440-VST02-01RA

POSITION

1440-TSP02-01RB

MASTER RELAY

1440-RMA00-04RC

Publication ENMON-UM123A-EN-P - October 2004

Installing the XM-123 Aeroderivative Module 11

Figure 2.7 Grounded DeviceNet V- at XM Module

In a system installation in which other DeviceNet products and a separate

DeviceNet power supply are present, the earth ground connection should be

made at the DeviceNet power supply and not at the XM module. See Figure

2.8.

Figure 2.8 Grounded DeviceNet V- at DeviceNet Power Supply.

Switch Input Power Supply Ground

In addition, the switch input power supply must be grounded at a single point.

Connect the Switch RTN signal to chassis or earth ground at either the XM

system, the switch, or other equipment that is wired to this switch.

Mounting the Terminal

Base Unit

The XM family includes several different terminal base units to serve all of the

XM modules. The XM-940 terminal base, Entek Cat. No. 1440-TB-A, is the

only terminal base unit used with the XM-123 module.

DNet

Power

Supply

DNet Power V+

DNet Power V-

V- V+

Publication ENMON-UM123A-EN-P - October 2004

12 Installing the XM-123 Aeroderivative Module

Use the following steps to mount the XM-940 terminal base unit on a DIN

rail.

1. Position the terminal base on the 35 x 7.5mm DIN rail (A).

2. Slide the terminal base unit over leaving room for the side

connector (B).

ATTENTION

The XM modules make a chassis ground connection

through the DIN rail. Use zinc plated, yellow chromated

steel DIN rail to assure proper grounding. Using other

DIN rail materials (e.g. aluminum, plastic, etc.), which can

corrode, oxidize or are poor conductors can result in

improper or intermittent platform grounding.

If you are not using the recommended DIN rail, connect

one of the chassis ground terminals on the XM terminal

base to a DIN Rail Grounding Block (C).

Position terminal base at a slight angle and hook over the top of the DIN rail.

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Allen-Bradley Entek XM-123 User manual

Allen-Bradley Entek XM-123 User manual

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