Rockwell Automation 1440-VLF02-01RA User Manual

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XM-121 Absolute Shaft Module

User Guide

Firmware Revision 5

1440-VLF02-01RA

Important User Information

WARNING

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

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://literature.rockwellautomation.com 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, when necessary, we use notes to make you aware of safety considerations.

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.

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

Identifies information that is critical for successful application and understanding of the product.

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, and recognize the consequence

Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.

Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.

Allen-Bradley, Rockwell Automation, and XM are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Safety Approvals

WARNING

AVERTISSEMENT

IMPORTANT

The following information applies when operating this equipment in hazardous locations.

Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest "T" number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system arfe subject to investigation by the local Authority Having Jurisdiction at the time of installation.

EXPLOSION HAZARD -

•Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

•Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.

•Substitution of components may impair suitability for Class I, Division 2.

•If this product contains batteries, they must only be changed in an area known to be nonhazardous.

Informations sur l’utilisation de cet équipement en environnements dangereux.

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu'à une utilisation en environnements de Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. Chaque produit est livré avec des marquages sur sa plaque d'identification qui indiquent le code de température pour les environnements dangereux. Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable (code de température le plus faible) peut être utilisé pour déterminer le code de température global du système. Les combinaisons d'équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l'installation.

RISQUE D’EXPLOSION –

•Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de débrancher l'équipement.

•Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.

•La substitution de composants peut rendre cet équipement inadapté à une utilisation en environnement de Classe I, Division 2.

•S'assurer que l'environnement est classé non dangereux avant de changer les piles.

Wiring to or from this device, which enters or leaves the system enclosure, must utilize wiring methods suitable for Class I, Division 2 Hazardous Locations, as appropriate for the installation in accordance with the product drawings as indicated in the following table.

Model Catalog Number Haz Location Drawings* Model Catalog Number Haz Location Drawings*

w/o Barriers

XM-120 1440-VST0201RA XM-121 1440-VLF0201RA XM-360 1440-TPR0600RE XM-122 1440-VSE0201RA XM-361 1440-TUN0600RE XM-123 1440-VAD0201RA XM-361 1440-TTC0600RE XM-160 1440-VDRS0600RH XM-161 1440-VDRS0606RH XM-441 1440-REX0004RD 48241-HAZ N/A XM-162 1440-VDRP0600RH XM-442 1440-REX0304RG 48642-HAZ N/A XM-220 1440-SPD0201RB 48640-HAZ 48641-HAZ

48178-HAZ 48179-HAZ

51263-HAZ 51264-HAZ

* Drawings are available on the included CD

w/ Barriers

w/o Barriers

XM-320 1440-TPS0201RB 48238-HAZ 48239-HAZ

48295-HAZ 48299-HAZ

XM-440 1440-RMA0004RC 48240-HAZ N/A

w/ Barriers

Introduction

Installing the Absolute Shaft Module

Chapter 1

Introducing the Absolute Shaft Module . . . . . . . . . . . . . . . . . . . . . . . . . 1

Absolute Shaft Module Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

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

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

Chapter 2

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

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

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

Grounding Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting the Terminal Base Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

DIN Rail Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Interconnecting Terminal Base Units . . . . . . . . . . . . . . . . . . . . . . . 15

Panel/Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Connecting Wiring for Your Module . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Terminal Block Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Connecting the Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Connecting the Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Connecting the Tachometer Signal. . . . . . . . . . . . . . . . . . . . . . . . . 24

Connecting the Buffered Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 26

Connecting the Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Connecting the Remote Relay Reset Signal . . . . . . . . . . . . . . . . . . 31

Connecting the Setpoint Multiplication Switch . . . . . . . . . . . . . . . 32

Connecting the 4-20 mA Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 33

Serial Port Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

DeviceNet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Mounting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Module Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Basic Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Powering Up the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Manually Resetting Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Installing the XM-121 Absolute Shaft Firmware . . . . . . . . . . . . . . . . . 42

Chapter 3

Configuration Parameters

v Publication GMSI10-UM014D-EN-P - May 2010

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

Signal Processing Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Measurement Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Overall Measurement Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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

Vector Measurement Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Speed Measurement Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Tachometer Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Tachometer Transducer Parameters . . . . . . . . . . . . . . . . . . . . . . . . 53

Tachometer Signal Processing Parameters . . . . . . . . . . . . . . . . . . . 54

Table of Contents vi

Specifications

DeviceNet Information

Alarm Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Relay Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4-20 mA Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Triggered Trend Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

SU/CD Trend Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

I/O Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Monitor Data Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Alarm and Relay Status Parameters . . . . . . . . . . . . . . . . . . . . . . . . 71

Device Mode Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Appendix A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Appendix B

Electronic Data Sheets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Changing Operation Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Transition to Program Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Transition to Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

XM Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Invalid Configuration Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Absolute Shaft I/O Message Formats . . . . . . . . . . . . . . . . . . . . . . . . . 85

Poll Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

COS Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Bit-Strobe Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

ADR for XM Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

DeviceNet Objects

Publication GMSI10-UM014D-EN-P - May 2010

Appendix C

Identity Object (Class ID 01H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

DeviceNet Object (Class ID 03H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Assembly Object (Class ID 04H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Class Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Assembly Instance Attribute Data Format. . . . . . . . . . . . . . . . . . . 97

Table of Contents vii

Connection Object (Class ID 05H). . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Instances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Discrete Input Point Object (Class ID 08H) . . . . . . . . . . . . . . . . . . . 101

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Parameter Object (Class ID 0FH). . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Acknowledge Handler Object (Class ID 2BH) . . . . . . . . . . . . . . . . . 107

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Alarm Object (Class ID 31DH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Channel Object (Class ID 31FH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Auto_Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Device Mode Object (Class ID 320H) . . . . . . . . . . . . . . . . . . . . . . . . 115

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Overall Measurement Object (Class ID 322H) . . . . . . . . . . . . . . . . . 116

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Relay Object (Class ID 323H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Publication GMSI10-UM014D-EN-P - May 2010

Table of Contents viii

Spectrum Waveform Measurement Object (Class ID 324H) . . . . . . 121

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Get_Stored_Waveform_Chunk . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Get_Waveform_Chunk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Speed Measurement Object (Class ID 325H). . . . . . . . . . . . . . . . . . . 125

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Tachometer Channel Object (Class ID 326H) . . . . . . . . . . . . . . . . . . 127

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Transducer Object (Class ID 328H) . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Vector Measurement Object (Class ID 329H) . . . . . . . . . . . . . . . . . . 130

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

4-20 mA Output Object (Class ID 32AH) . . . . . . . . . . . . . . . . . . . . . 132

Class Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Instances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Instance Attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Guidelines for Setting the Full Scale Value

Glossary

Index

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Appendix D

XM-121 Absolute Shaft Full Scale Tables . . . . . . . . . . . . . . . . . . . . . 136

Example on Using Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Chapter

IMPORTANT

Introduction

This chapter provides an overview of the XM-121 Absolute Shaft module. It also discusses the components of the module.

For information about See page

Introducing the Absolute Shaft Module 1 Absolute Shaft Module Components 2 Using this Manual 3

This manual only describes how to install and use the XM-121 Absolute Shaft module. For information about the low frequency dynamic measurement module, refer to the XM-120/121 Dynamic Measurement Module User Guide.

Introducing the Absolute Shaft Module

The XM-121 Absolute Shaft module is an XM-121 Low Frequency Dynamic module with alternative, XM-121A, firmware loaded onto it. The XM-121 is

part of the Allen-Bradley™ XM condition monitoring and protection modules that operate both in stand-alone applications or integrate with Programmable Logic Controllers (PLCs) and control system networks.

Shaft Absolute is the measure of the shaft’s motion relative to free space – its absolute motion. In the Absolute Shaft module, the Shaft Absolute measurement is calculated by summing signals of both an eddy current probe, measuring the motion of the shaft relative to the case, and an Allen-Bradley 9000 series sensor (accelerometer or velocity) measuring the absolute motion of the case.

In addition to vibration inputs, the Absolute Shaft module accepts one tachometer input to provide speed measurement and order analysis functions. It also includes a single on-board relay (expandable to five with an XM-441 module), two 4-20 mA 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 nine alarms making it a complete monitoring system.

Series, a family of DIN rail mounted

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2 Introduction

I C

R E

XM-940 Dynamic Measurement Module Terminal Base Unit

Cat. No. 1440-TB-A

XM-121 Low Frequency Dynamic

Measurement Module

Cat. No. 1440-VLF02-01RA

IMPORTANT

It 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.

The Absolute Shaft 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.

Absolute Shaft Module Components

The Absolute Shaft module consists of a terminal base unit and an instrument module. The XM-121 Low Frequency Dynamic Measurement Module and the XM-940 Terminal Base are shown below.

Figure 1.1 Absolute Shaft 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 and Absolute Shaft modules.

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• XM-121 Low Frequency Dynamic Measurement Module - The XM-121

mounts on the XM-940 terminal base via a keyswitch and a 96-pin connector. The XM-121 contains the measurement electronics, processors, relay, and serial interface port for local configuration.

The XM-441 Expansion Relay module may be connected to the XM-121 module via the XM-940 terminal base.

When connected to the module, the Expansion Relay module simply “expands” the capability of the XM-121 by adding four additional epoxy-sealed relays. The module controls the Expansion Relay module by extending to it the same logic and functional controls as the on-board relay.

Introduction 3

Using this Manual

This manual introduces you to the XM-121 Absolute Shaft module. It is intended for anyone who installs, configures, or uses the XM-121 Absolute Shaft 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 the XM-121 module.

Chapter 2 "Installing the XM-121 Absolute Shaft Module" describes how to install, wire, and use the Absolute Shaft module. It also provides instructions on how to install the Absolute Shaft firmware.

Chapter 3 "Configuration Parameters" provides a complete listing and description of the Absolute Shaft 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 Absolute Shaft module.

Appendix B "DeviceNet Information" provides information to help you configure the module over a DeviceNet network.

Appendix C "DeviceNet Objects" provides information on the DeviceNet objects supported by the XM-121 Absolute Shaft module.

Appendix D "Guidelines for Setting the Full Scale Value" provides guidelines for determining the optimal Full Scale value in the XM-121 Absolute Shaft 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:

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4 Introduction

TIP

EXAMPLE

The XM-121 Absolute Shaft module is referred to as XM-121, Absolute Shaft module, device, or module throughout this manual.

A tip indicates additional information which may be helpful.

This convention presents an example.

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Chapter

ATTENTION

Installing the Absolute Shaft Module

This chapter discusses how to install and wire the XM-121 Absolute Shaft module. It also describes the module indicators and the basic operations of the module, and provides instructions to install the Absolute Shaft firmware.

For information about See page

XM Installation Requirements 6 Mounting the Terminal Base Unit 13 Connecting Wiring for Your Module 17 Mounting the Module 37 Module Indicators 38 Basic Operations 41 Installing the XM-121 Absolute Shaft Firmware 42

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.

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6 Installing the Absolute Shaft Module

ATTENTION

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:

• 14 to 22 AWG copper conductors without pretreatment; 8 AWG

required for grounding the DIN rail for electromagnetic interference (emi) purposes

• Recommended strip length 8 millimeters (0.31 inches)

• Minimum insulation rating of 300 V

• Soldering the conductor is forbidden

• Wire ferrules can be used with stranded conductors; copper ferrules

recommended

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.

Power Requirements

Before installing your module, calculate the power requirements of all modules interconnected via their side connectors. The total current draw through the side connector cannot exceed 3 A. Refer to the specifications for the specific modules for power requirements.

A separate power connection is necessary if the total current draw of the interconnecting modules is greater than 3 A.

Figure 2.1 is an illustration of wiring modules using separate power connections.

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Installing the Absolute Shaft Module 7

Any limited power source that satisfies the requirements specified below

Figure 2.1 XM Modules with Separate Power Connections

Power Supply Requirements

XM Power Supply Requirements

Listed Class 2 rated supply, or

Protection

Fused* ITE Listed SELV supply, or

Fused* ITE Listed PELV supply Output Voltage 24 Vdc ± 10% Output Power 100 Watts Maximum (~4A @ 24 Vdc) Static Regulation ± 2% Dynamic Regulation ± 3% Ripple < 100mVpp Output Noise Per EN50081-1 Overshoot < 3% at turn-on, < 2% at turn-off Hold-up Time As required (typically 50mS at full rated load) * When a fused supply is used the fuse must be a 5 amp, listed, fast acting fuse such as

provided by Allen-Bradley part number 1440-5AFUSEKIT

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8 Installing the Absolute Shaft Module

IMPORTANT

See Application Technique "XM Power Supply Solutions", publication ICM-AP005A-EN-E, for guidance in architecting power supplies for XM systems.

Grounding Requirements

Use these grounding requirements to ensure safe electrical operating circumstances, and to help avoid potential emi and ground noise that can cause unfavorable operating conditions for your XM system.

DIN Rail Grounding

The XM modules make a chassis ground connection through the DIN rail. The DIN rail must be connected to a ground bus or grounding electrode conductor using 8 AWG or 1 inch copper braid. See Figure 2.2.

Use zinc-plated, yellow-chromated steel DIN rail (Allen-Bradley part no. 199-DR1 or 199-DR4) or equivalent 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.

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Figure 2.2 XM System DIN Rail Grounding

Power Supply

DYNAMIC MEASUREMENT

1440-VST02-01RA

DYNAMIC MEASUREMENT

1440-VST02-01RA

POSITION

1440-TSP02-01RB

MASTER RELAY

1440-RMA00-04RC

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

EXPANSION RELAY

1440-REX00-04RD

EXPANSION RELAY

1440-REX00-04RD

Installing the Absolute Shaft Module 9

1 Use 14 AWG wire.

The grounding wire can be connected to the DIN rail using a DIN Rail Grounding Block (Figure 2.3).

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10 Installing the Absolute Shaft Module

Figure 2.3 DIN Rail Grounding Block

Panel/Wall Mount Grounding

The XM modules can also be mounted to a conductive mounting plate that is grounded. See Figure 2.5. Use the grounding screw hole provided on the terminal base to connect the mounting plate the Chassis terminals.

Figure 2.4 Grounding Screw on XM Terminal Base

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Figure 2.5 Panel/Wall Mount Grounding

Power Supply

Installing the Absolute Shaft Module 11

1 Use 14 AWG wire.

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12 Installing the Absolute Shaft Module

IMPORTANT

24 V Common Grounding

24 V power to the XM modules must be grounded. When two or more power supplies power the XM system, ground the 24 V Commons at a single point, such as the ground bus bar.

If it is not possible or practical to ground the -24Vdc supply, then it is possible for the system to be installed and operate ungrounded. However, if installed ungrounded then the system must not be connected to a ground through any other circuit unless that circuit is isolated externally. Connecting a floating system to a non-isolated ground could result in damage to the XM module(s) and/or any connected device. Also, operating the system without a ground may result in the system not performing to the published specifications regards measurement accuracy and communications speed, distance or reliability.

The 24 V Common and Signal Common terminals are internally connected. They are isolated from the Chassis terminals unless they are connected to ground as described in this section. See Terminal Block Assignments on page 18 for more information.

Transducer Grounding

Make certain the transducers are electrically isolated from earth 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 (Chassis terminal) and not at the transducer.

DeviceNet Grounding

The DeviceNet network is functionally isolated and must be referenced to earth ground at a single point. XM modules do not require an external DeviceNet power supply. Connect DeviceNet V- to earth ground at one of the XM modules, as shown in Figure 2.6.

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Installing the Absolute Shaft Module 13

To Ground Bus

ATTENTION

Figure 2.6 Grounded DeviceNet V- at XM Module

Use of a separate DeviceNet power supply is not permitted. See Application Technique "XM Power Supply Solutions", publication ICM-AP005A-EN-E, for guidance in using XM with other DeviceNet products.

Mounting the Terminal Base Unit

For more information on the DeviceNet installation, refer to the ODVA Planning and Installation Manual - DeviceNet Cable System, which is available on the ODVA web site (http://www.odva.org).

Switch Input Grounding

The Switch Input circuits are functionally isolated from other circuits. It is recommended that the Switch RTN signal be grounded at a single point. Connect the Switch RTN signal to the XM terminal base (Chassis terminal) or directly to the DIN rail, or ground the signal at the switch or other equipment that is wired to the switch.

The XM family includes several different terminal base units to serve all of the XM modules. The XM-940 terminal base, Cat. No. 1440-TB-A, is the only terminal base unit used with the Absolute Shaft module.

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14 Installing the Absolute Shaft Module

ATTENTION

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

The terminal base can be DIN rail or wall/panel mounted. Refer to the specific method of mounting below.

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.

You can also mount the terminal base to a grounded mounting plate. Refer to Panel/Wall Mount Grounding on page 10.

DIN Rail Mounting

Use the following steps to mount the XM-947 terminal base unit on a DIN rail (A-B pt no. 199-DR1 or 199-DR4).

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

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

connector (B).

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Installing the Absolute Shaft Module 15

IMPORTANT

3. Rotate the terminal base onto the DIN rail with the top of the rail hooked under the lip on the rear of the terminal base.

4. Press down on the terminal base unit to lock the terminal base on the DIN rail. If the terminal base does not lock into place, use a screwdriver or similar device to open the locking tab, press down on the terminal base until flush with the DIN rail and release the locking tab to lock the base in place.

Interconnecting Terminal Base Units

Follow the steps below to install another terminal base unit on the DIN Rail.

Make certain you install the terminal base units in order of left to right.

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

2. Make certain the side connector (B) is fully retracted into the base unit.

3. Slide the terminal base unit over tight against the neighboring terminal

base. Make sure the hook on the terminal base slides under the edge of the terminal base unit.

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16 Installing the Absolute Shaft Module

5. Gently push the side connector into the side of the neighboring terminal base to complete the backplane connection.

Panel/Wall Mounting

Installation on a wall or panel consists of:

• laying out the drilling points on the wall or panel

• drilling the pilot holes for the mounting screws

• installing the terminal base units and securing them to the wall or panel

Use the following steps to install the terminal base on a wall or panel.

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Installing the Absolute Shaft Module 17

Side Connector

1. Lay out the required points on the wall/panel as shown in the drilling dimension drawing below.

Connecting Wiring for Your Module

2. Drill the necessary holes for the #6 self-tapping mounting screws.

3. Secure the terminal base unit using two #6 self-tapping screws.

4. To install another terminal base unit, retract the side connector into the base unit. Make sure it is fully retracted.

5. Position the terminal base unit up tight against the neighboring terminal

base. Make sure the hook on the terminal base slides under the edge of the terminal base unit.

6. Gently push the side connector into the side of the neighboring terminal base to complete the backplane connection.

7. Secure the terminal base to the wall with two #6 self-tapping screws.

Wiring to the module is made through the terminal base unit on which the module mounts. The XM-121 is compatible only with the XM-940 terminal base unit, Cat. No. 1440-TB-A.

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18 Installing the Absolute Shaft Module

ATTENTION

TIP

XM-940 (Cat. No. 1440-TB-A)

Revision number of XM module

Figure 2.7 XM-940 Terminal Base Unit

Terminal Block Assignments

The terminal block assignments and descriptions for the Absolute Shaft module are shown below.

The following table applies only to the XM-121 module revision B01 (and later). Earlier revisions of the module do not support the wiring configuration of the Absolute Shaft module.

Refer to the installation instructions for the specific XM module for its terminal assignments.

The XM module’s revision number is on the product label (which is located on the front of the XM module, as shown below).

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Installing the Absolute Shaft Module 19

WARNING

EXPLOSION HAZARD

Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.

Terminal Block Assignments

No. Name Description

0 Xducer 1 (+) Vibration transducer 1 (shaft relative) connection 1 Xducer 2 (+) Vibration transducer 2 (case absolute) connection 2 Buffer 1 (+) Vibration signal 1 buffered output 3 Buffer 2 (+) Vibration signal 2 buffered output 4 Tach/Signal In (+) Tachometer transducer/signal input, positive side 5 Buffer Power 1 IN Channel 1 buffer power input

Connect to terminal 21 for negative biased transducers

6 Positive Buffer Bias Provides positive (-5 V to +24 V) voltage compliance to buffered outputs

Connect to terminal 22 (CH 2) for positive bias transducers 7 TxD PC serial port, transmit data 8 RxD PC serial port, receive data 9

XRTN

Circuit return for TxD and RxD

10 Chassis Connection to DIN rail ground spring or panel mounting hole 11 4-20 mA 1 (+) 4-20 mA output 12 4-20 mA 1 (-)

300 ohm maximum load

13 Chassis Connection to DIN rail ground spring or panel mounting hole 14 Chassis Connection to DIN rail ground spring or panel mounting hole 15 Chassis Connection to DIN rail ground spring or panel mounting hole 16

Xducer 1 (-)

Xducer 2 (-)

Signal Common

Vibration transducer 1 connection

Vibration transducer 2 connection

Vibration buffered output return

19 TACH Buffer Tachometer transducer/signal output 20 Tachometer (-) Tachometer transducer/signal return, TACH Buffer return 21 Buffer/Xducer Pwr (-) Provides negative (-24 V to +9 V) voltage compliance to buffered outputs

Connect to terminal 5 (CH 1) for negative bias transducers

Transducer power supply output, negative side; used to power external

sensor (40 mA maximum load)

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20 Installing the Absolute Shaft Module

Terminal Block Assignments

No. Name Description

22 Buffer Power 2 IN Channel 2 buffer power input

23 CAN_High DeviceNet bus connection, high differential (white wire) 24 CAN_Low DeviceNet bus connection, low differential (blue wire) 25 +24 V Out Internally connected to 24 V In 1 (terminal 44)

26 DNet V (+) DeviceNet bus power input, positive side (red wire) 27 DNet V (-) DeviceNet bus power input, negative side (black wire) 28

29 4-2 0mA 2 (+) 4-20 mA output 30 4-20 mA 2 (-) 31 Chassis Connection to DIN rail ground spring or panel mounting hole 32 Chassis Connection to DIN rail ground spring or panel mounting hole

24 V Common

Connect to terminal 6 for positive biased transducers for negative biased

transducers

Used to daisy chain power if XM modules are not plugged into each other

Internally connected to 24 V Common (terminals 43 and 45)

Used to daisy chain power if XM modules are not plugged into each other

If power is not present on terminal 44, there is no power on this terminal

300 ohm maximum load

33 Chassis Connection to DIN rail ground spring or panel mounting hole 34 Chassis Connection to DIN rail ground spring or panel mounting hole 35 Chassis Connection to DIN rail ground spring or panel mounting hole 36 Chassis Connection to DIN rail ground spring or panel mounting hole 37 Chassis Connection to DIN rail ground spring or panel mounting hole 38 Chassis Connection to DIN rail ground spring or panel mounting hole 39 SetPtMult Switch input to activate Set Point Multiplication (active closed) 40 Switch RTN Switch return, shared between SetPtMult and Reset Relay 41 Reset Relay Switch input to reset internal relay (active closed) 42 Reserved 43

24 V Common

Internally DC-coupled to circuit ground

44 +24 V In Connection to primary external +24 V power supply, positive side 45

24 V Common

Connection to external +24 V power supply, negative side (internally

DC-coupled to circuit ground) 46 Relay N.C. 1 Relay Normally Closed contact 1 47 Relay Common 1 Relay Common contact 1 48 Relay N.O. 1 Relay Normally Open contact 1 49 Relay N.O. 2 Relay Normally Open contact 2 50 Relay Common 2 Relay Common contact 2 51 Relay N.C. 2 Relay Normally Closed contact 2

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1 Terminals are internally connected and isolated from the Chassis terminals.

Installing the Absolute Shaft Module 21

24V dc Power Supply

IMPORTANT

ATTENTION

Connecting the Power Supply

Power supplied to the module must be nominally 24 Vdc (±10%) and must be a Class 2 rated circuit.

Wire the DC-input power supply to the terminal base unit as shown in Figure

2.8.

Figure 2.8 DC Input Power Supply Connections

A Class 2 circuit can be provided by use of an NEC Class 2 rated power supply, or by using a SELV or PELV rated power supply with a 5 Amp current limiting fuse installed before the XM module(s).

24Vdc needs to be wired to terminal 44 (+24 V In) to provide power to the device and other XM modules linked to the wired terminal base via the side connector.

The power connections are different for different XM modules. Refer to the installation instructions for your specific XM module for complete wiring information.

Connecting the Relays

The XM-121 has both Normally Open (NO) and Normally Closed (NC) relay contacts. Normally Open relay contacts close when the control output is

energized. Normally Closed relay contacts open when the control output is energized.

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22 Installing the Absolute Shaft Module

IMPORTANT

TIP

IMPORTANT

The alarms associated with the relay and whether the relay is normally de-energized (non-failsafe) or normally energized (failsafe) depends on the configuration of the module. Refer to Relay Parameters on page 59 for details.

Table 2.1 shows the on-board relay connections for the module.

All XM relays are double pole. This means that each relay has two contacts in which each contact operates independently but identically. The following table and illustrations show wiring solutions for both contacts; although, in many applications it may be necessary to wire only one contact.

The Expansion Relay module may be connected to the module to provide additional relays. Refer the XM-441 Expansion Relay Module User’s Guide for wiring details.

The NC/NO terminal descriptions (page 20) correspond to a de-energized (unpowered) relay.

When the relay is configured for non-failsafe operation, the relay is normally de-energized.

When the relay is configured for failsafe operation, the relay is normally energized, and the behavior of the NC and NO terminals is inverted.

Table 2.1 Relay Connections for XM-121

Configured for

Failsafe Operation Relay 1 Terminals

Nonalarm Alarm Wire Contacts Contact 1 Contact 2

Closed Opened COM 47 50

NO 48 49

Opened Closed COM 47 50

NC 46 51

Configured for

Non-failsafe Operation Relay 1 Terminals

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Nonalarm Alarm Wire Contacts Contact 1 Contact 2

Closed Opened COM 47 50

NC 46 51

Opened Closed COM 47 50

NO 48 49

Installing the Absolute Shaft Module 23

Figures 2.9 and 2.10 illustrate the behavior of the NC and NO terminals when the relay is wired for failsafe, alarm or nonalarm condition or non-failsafe, alarm or nonalarm condition.

Figure 2.9 Relay Connection - Failsafe, Nonalarm Condition

Non-failsafe, Alarm Condition

Figure 2.10 Relay Connection - Failsafe, Alarm Condition Non-failsafe, Nonalarm Condition

Alternate Relay Wiring

Figures 2.11 and 2.12 show how to wire both ends of a single external indicator to the XM terminal base for failsafe, nonalarm or alarm condition or non-failsafe, nonalarm or alarm condition.

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24 Installing the Absolute Shaft Module

IMPORTANT

Figure 2.11 Relay Connection - Failsafe, Nonalarm Condition

Non-failsafe, Alarm Condition

Figure 2.12 Relay Connection - Failsafe, Alarm Condition

Non-failsafe, Nonalarm Condition

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Connecting the Tachometer Signal

The XM-121 provides a single tachometer input signal. The signal processing performed on the tachometer signal depends on the configuration of the module. See page 52 for a description of the tachometer parameters.

If you are not using the tachometer input, set the Pulses per Revolution parameter to zero (0). This will disable the tachometer measurement and prevent the module from indicating a tachometer fault (TACH indicator flashing yellow). A tachometer fault occurs when no signal pulses are received on the tachometer input signal for a relatively long period.

Installing the Absolute Shaft Module 25

Connecting a Magnetic Pickup Tachometer

Figure 2.13 shows the wiring of a magnetic pickup tachometer to the terminal base unit.

Figure 2.13 Magnetic Pickup Tachometer Signal Connection

Connecting a Hall Effect Tachometer Sensor

Figure 2.14 shows the wiring of a Hall Effect Tachometer Sensor, Cat. No. 44395, to the terminal base unit.

Figure 2.14 Hall Effect Tachometer Signal Connection

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26 Installing the Absolute Shaft Module

COM

Signal Common

Tach Input Signal

-24V DC

Shield

S hield Floating

Isolated Sensor Driver

20 21 31

Connecting a Non-Contact Sensor to the Tachometer Signal

Figure 2.15 shows the wiring of a non-contact sensor to the tachometer input signal.

Figure 2.15 Non-Contact Sensor to Tachometer Signal Connection

Connecting the Buffered Outputs

The XM-121 provides buffered outputs of all transducer input signals. The buffered output connections may be used to connect the module to portable data collectors or other online systems.

Figure 2.16 shows the buffered output connections for the modules.

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Figure 2.16 Buffered Output Connections

IMPORTANT

Table 2.2 Configuring Buffered Output Operating Range

Transducer Input Range Channel Connect Terminal To Terminal

Negative Bias

-24 to +9V 1 5 21

Positive Bias

-5 to +24V 2 22 6

Non-Bias

-5 to +9V 2 ---- ----

1 The signal from the non-contact probe must be connected to channel 1 on the terminal base.

2 The signal from the 9000 sensor must be connected to channel 2 on the terminal base.

Applies only to XM-121 module revision B01 (and later).

The voltage operating range of the buffered outputs must be configured to coincide with the corresponding transducer bias range. This operating range is configured by placing a jumper from terminal 5 (channel 1) and terminal 22 (channel 2) to either terminal 6 (Positive Buffer Bias) or terminal 21 (Buffer -), depending on the transducer. See Table 2.2. Note the buffered output operating range is configured independently per channel.

Installing the Absolute Shaft Module 27

Connecting the Transducers

The Absolute Shaft module can accept input from a non-contact eddy current probe and a case mounted vibration sensor (accelerometer or velocity sensor). The signal from a non-contact eddy current probe must be connected to channel 1. The Absolute Shaft module supports the 5, 8, and 11mm Allen-Bradley 2100 Series and Bently Nevada 3300 XL Series probes.

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28 Installing the Absolute Shaft Module

IMPORTANT

ATTENTION

IMPORTANT

The case mounted vibration sensor must be connected to channel 2. The Absolute Shaft module supports the following Allen-Bradley 9000 series sensors.

Table 2.3 Supported Allen-Bradley 9000 Series Sensors

Cat. No. Model

EK-43781I 9000A General Purpose Sensor EK-43808I 9100VO Velocity Output Sensor EK-43786I 9100CSA General Purpose Sensor EK-43805I 9100T High Temperature Sensor

Important Considerations

When mounting the vibration sensor and the non-contact eddy current probe, it is important to note the following:

• The two sensors should be mounted at or adjacent to each machine

bearing.

• The sensors should be mounted in the same geometric plane.

• It is preferable to mount the transducers at the same point on the same

bearing half. This can be done by using a dual mounting housing (such as the Dual Probe Holder, Cat. No. EK-29000-DPH01). The positions chosen should be the same at each bearing.

Connecting a Non-Contact Sensor and 9000 Series Sensor

The following figure shows the wiring of a non-contact sensor and a 9000 series sensor to the terminal base unit. The non-contact sensor must be wired to channel 1 and the 9000 sensor must be wired to channel 2.

The Absolute Shaft module requires the XM-121 module revision B01 (and later). Earlier revisions of the module do not support the Absolute Shaft wiring configuration.

You may ground the cable shield at either end of the cable. Do not ground the shield at both ends. Recommended practice is to ground the cable shield at the terminal base and not at the transducer. Any convenient Chassis terminal may be used (see Terminal Block Assignments on page 18).

The internal transducer power supply is providing power to the non-contact sensor.

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Installing the Absolute Shaft Module 29

IMPORTANT

TYPICAL WIRING FOR NON-CONTACT SENSOR AND 9000 SERIES SENSOR TO XM-121 ABSOLUTE SHAFT MODUL E

Shield

Pin A - Signal Pin B - Common

Cable shield not connected at this end

Channel 2 Input Signal

Signal Common

COM

Signal Common

Channel 1 Input Signal

-24V DC

Shield

S hield Floating

Isolated Sensor Driver

*Note: Jumpering terminal 5 to terminal 21 configures CH 1 buffer (-24V to +9V)

Jumpering terminal 6 to terminal 22 configures CH 2 buffer (-5V to +24V)

IMPORTANT

Make certain the IEPE Power parameter for channel 2 is enabled so power is provided to the 9000 sensor. Refer to Channel Parameters on page 46.

Figure 2.17 Non-Contact Sensor and 9000 Series Sensor Wiring

Connecting Two Non-Contact Sensors and 9000 Series Sensor

The following figure shows the wiring of two non-contact sensors and a 9000 series sensor to the terminal base unit. One non-contact sensor must be wired to channel 1 and the 9000 sensor must be wired to channel 2. The second non-contact sensor is wired to the tachometer input signal.

The Absolute Shaft module requires the XM-121 module revision B01 (and later). Earlier revisions of the module do not support the Absolute Shaft wiring configuration.

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30 Installing the Absolute Shaft Module

ATTENTION

IMPORTANT

TYPICAL WIRING FOR 9000 SERIES SENSOR AND TWO

NON-CONTACT SENSORS TO XM-121 ABSOLUTE SHAFT MODULE

Pin A - Common Pin B - Signal

Cable shield not connected at this end

Shield

Channel 2 Input Signal

Signal Common

COM

Signal Common

Channel 1 Input Signal

21 22

-24V DC

Signal Common Tach Input Signal

Shield

* Note: Jumpering terminal 5 to terminal 21 configures CH 1 buffer (-24V to 9V)

5 6

Jumpering terminal 6 to terminal 22 configures CH 2 buffer (-5V to +24V)

The internal transducer power supply is providing power to the non-contact sensor connected to channel 1.

Make certain the IEPE Power parameter for channel 2 is enabled so power is provided to the 9000 sensor. Refer to Channel Parameters on page 46.

Transducer DC bias is monitored on all signals.

Figure 2.18 9000 Series Sensor and Two Non-Contact Sensors

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Installing the Absolute Shaft Module 31

TIP

ATTENTION

Connecting the Remote Relay Reset Signal

If you set the module relay to latching and the relay activates, the relay stays activated even when the condition that caused the alarm has ended. The remote relay reset signal enables you to reset your module relay remotely after you have corrected the alarm condition. This includes latched relays in the Expansion Relay module when it is attached to the XM-121.

If you set a module relay to latching, make sure that any linked relays, such as relays in an XM-440 Master Relay Module, are not configured as latching. When both relays are set to latching, the relay in each module will have to be independently reset when necessary.

You can discretely reset a relay using the serial or remote configuration tool.

Wire the Remote Relay Reset Signal to the terminal base unit as shown in Figure 2.19.

Figure 2.19 Remote Relay Reset Signal Connection

The Switch Input circuits are functionally isolated from other circuits. It is recommended that the Switch RTN signal be grounded at a signal point. Connect the Switch RTN signal to the XM terminal base (Chassis terminal) or directly to the DIN rail, or ground the signal at the switch or other equipment that is wired to the switch.

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32 Installing the Absolute Shaft Module

ATTENTION

A single switch contact can also be shared by multiple XM modules wired in parallel as shown in Figure 2.20.

The relay reset connections may be different for different XM modules. Figure 2.20 applies only to the XM-121 module. Refer to the installation instructions for the module for its terminal assignments.

Figure 2.20 Typical Multiple XM Modules Remote Relay Reset Signal Connection

Connecting the Setpoint Multiplication Switch

You can configure the module to multiply the alarm setpoints, or inhibit the alarms during the start-up period. This can be used to avoid alarm conditions that may occur during startup, for example, when the monitored machine passes through a critical speed.

Wire the Setpoint Multiplication switch to the terminal base unit as shown in Figure 2.21.

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Figure 2.21 Setpoint Multiplication Connection

ATTENTION

Installing the Absolute Shaft Module 33

Connecting the 4-20 mA Outputs

The module includes an isolated 4-20 mA per channel output into a maximum load of 300 ohms. The measurements that the 4-20 mA output tracks and the signal levels that correspond to the 4 mA and 20 mA are configurable. Refer to 4-20 mA Output Parameters on page 63 for details.

Wire the 4-20 mA outputs to the terminal base unit as shown in Figure 2.22.

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34 Installing the Absolute Shaft Module

ATTENTION

Figure 2.22 4-20 mA Output Connections

The 4-20 mA outputs are functionally isolated from other circuits. It is recommended that the outputs be grounded at a single point. Connect the 4-20 mA (-) to the XM terminal base (Chassis terminal) or directly to the DIN rail, or ground the signal at the other equipment in the 4-20 mA loop.

Serial Port Connection

The XM-121 includes a serial port connection that allows you to connect a PC to it and configure the module’s parameters. There are two methods of connecting an external device to the module’s serial port.

• Ter mi nal Bas e Un it - There are three terminals on the terminal base

unit you can use for the serial port connection. They are TxD, RxD, and RTN (terminals 7, 8, and 9, respectively). If these three terminals are wired to a DB-9 female connector, then a standard RS-232 serial cable with 9-pin (DB-9) connectors can be used to connect the module to a PC (no null modem is required).

The DB-9 connector should be wired to the terminal block as shown.

XM-121 Terminal Base Unit (Cat. No. 1440-TB-A)

TX Terminal (terminal 7) ---------------------- Pin 2 (RD - receive data) RX Terminal (terminal 8) ---------------------- Pin 3 (TD - transmit data) RTN Terminal (terminal 9) --------------------- Pin 5 (SG - signal ground)

DB-9 Female Connector

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Installing the Absolute Shaft Module 35

mini-connector

WARNING

IMPORTANT

• Mini-Connector - The mini-connector is located on top of the module,

as shown in Figure 2.23.

Figure 2.23 Mini-Connector

A special cable (Cat. No. 1440-SCDB9FXM2) is required for this connection. The connector that inserts into the PC is a DB-9 female connector, and the connector that inserts into the module is a USB Mini-B male connector.

If you connect or disconnect the serial cable with power applied to the module or the serial device on the other end of the cable, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

If 24V Common is not referenced to earth ground, we recommend you use an RS-232 isolator, such as Phoenix PSM-ME-RS232/RS232-P (Cat. No. 1440-ISO-232-24), to protect both the XM module and the computer.

DeviceNet Connection

The XM-121 includes a DeviceNet™ connection that allows the module to communicate with a programmable controller, DCS, or another XM module.

DeviceNet is an open, global, industry-standard communications network designed to provide an interface through a single cable from a programmable controller to a smart device such as the XM-121. As multiple XM modules are interconnected, DeviceNet also serves as the communication bus and protocol that efficiently transfers data between the XM modules.

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36 Installing the Absolute Shaft Module

IMPORTANT

ATTENTION

IMPORTANT

Connect the DeviceNet cable to the terminal base unit as shown.

Connect To Terminal

Red Wire DNet V+ 26 (Optional - see note) White Wire CAN High 23 Bare Wire Shield (Chassis) 10 Blue Wire CAN Low 24 Black Wire DNet V- 27

The DeviceNet power circuit through the XM module interconnect, which is rated at only 300 mA, is not intended or designed to power DeviceNet loads. Doing so could damage the module or terminal base.

To preclude this possibility, even unintentionally, it is recommended that DeviceNet V+ be left unconnected.

You must ground the DeviceNet shield at only one location. Connecting the DeviceNet shield to terminal 10 will ground the DeviceNet shield at the XM module. If you intend to terminate the shield elsewhere, do not connect the shield to terminal 10.

The DeviceNet network must also be referenced to earth at only one location. Connect DNet V- to earth or chassis at one of the XM modules.

The DNet V+ and DNet V- terminals are inputs to the XM module. Do not attempt to pass DeviceNet power through the XM terminal base to other non-XM equipment by connecting to these terminals. Failure to comply may result in damage to the XM terminal base and/or other equipment.

Terminate the DeviceNet network and adhere to the requirements and instructions in the ODVA Planning and Installation Manual - DeviceNet Cable System, which is available on the ODVA web site (http://www.odva.org).

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The devices are shipped from the factory with the network node address (MAC ID) set to 63. The network node address is software settable. You can

Installing the Absolute Shaft Module 37

IMPORTANT

ATTENTION

WARNING

IMPORTANT

use the XM Serial Configuration Utility or RSNetWorx™ for DeviceNet (Version 3.0 or later) to set the network node address. Refer to the appropriate documentation for details.

The baud rate for the XM-121 is set by way of "baud detection" (Autobaud) at power-up.

Mounting the Module

The XM-121 mounts on the XM-940 terminal base unit, Cat. No. 1440-TB-A. We recommend that you mount the module after you have connected the wiring on the terminal base unit.

The XM-121 module is compatible only with the XM-940 terminal base unit. The keyswitch on the terminal base unit should be at position 1 for the modules.

Do not attempt to install the XM-121 module on other terminal base units.

Do not change the position of the keyswitch after wiring the terminal base.

This module is designed so you can remove and insert it under power. However, when you remove or insert the

module with power applied, I/O attached to the module can change states due to its input/output signal changing conditions. Take special care when using this feature.

When you insert or remove the module while power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

Install the overlay slide label to protect serial connector and electronics when the serial port is not in use.

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38 Installing the Absolute Shaft Module

1. Make certain the keyswitch (A) on the terminal base unit (C) is at position 1 as required for the module.

Module Indicators

2. Make certain the side connector (B) is pushed all the way to the left. Yo u cannot install the module unless the connector is fully extended.

3. Make sure that the pins on the bottom of the module are straight so they

will align properly with the connector in the terminal base unit.

4. Position the module (D) with its alignment bar (E) aligned with the groove (F) on the terminal base.

5. Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism (G) is locked into the module.

6. Repeat the above steps to install the next module in its terminal base.

The Absolute Shaft module has seven LED indicators, which include a module status (MS) indicator, a network status (NS) indicator, a status indicator for each channel (CH1, CH2, and TACH), an activation indicator for the Setpoint Multiplier, and a status indicator for the Relay. The LED indicators are located on top of the module.

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Installing the Absolute Shaft Module 39

Module Indicators

Figure 2.24 LED Indicators

The following tables describe the states of the LED status indicators.

Module Status (MS) Indicator

Color State Description

No color Off No power applied to the module. Green Flashing Red Module performing power-up self test.

Flashing

Solid

Module operating in Program Mode

Module operating in Run Mode

Red Flashing • Application firmware is invalid or not loaded.

Download firmware to the module.

• Firmware download is currently in progress.

Solid An unrecoverable fault has occurred. The module may

need to be repaired or replaced.

1 Program Mode - Typically this occurs when the module configuration settings are being updated with the XM

Serial Configuration Utility. In Program Mode, the module does not perform its normal functions. The signal processing/measurement process is stopped, and the status of the alarms is set to the disarm state to prevent a false alert or danger status.

2 Run Mode - In Run Mode, the module collects measurement data and monitors each vibration measurement

device.

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40 Installing the Absolute Shaft Module

Network Status (NS) Indicator

Color State Description

No color Off Module is not online.

• Module is autobauding.

• No power applied to the module, look at Module

Status LED.

Green Flashing Module is online (DeviceNet) but no connections are

currently established.

Solid Module is online with connections currently

established.

Red Flashing One or more I/O connections are in the timed-out state.

Solid Failed communications (duplicate MAC ID or Bus-off).

1 Normal condition when the module is not a slave to an XM-440, PLC, or other master device.

Channel 1, Channel 2, and Tachometer Status Indicators

Color State Description

No color Off • Normal operation within alarm limits on the channel.

• No power applied to the module, look at Module

Status LED.

Yellow Solid An alert level alarm condition exists on the channel

(and no transducer fault, tachometer fault, or danger level alarm condition exists).

Flashing Tach LED

Flashing CH1/2 LED

Red Solid A danger level alarm condition exists on the channel

Flashing A transducer fault condition exists on the channel.

A tachometer fault (no transducer fault) condition exists on the tachometer channel

A tachometer fault condition exists and the channel’s alarm speed range is enabled (and no transducer fault on the channel’s transducer).

(and no transducer fault or tachometer fault condition exists).

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Setpoint Multiplier Indicator

Color State Description

Yellow Off Setpoint multiplier is not in effect.

Solid Setpoint multiplier is in effect.

Installing the Absolute Shaft Module 41

Relay Indicator

Color State Description

Red Off On-board relay is not activated.

Solid On-board relay is activated.

Basic Operations

Powering Up the Module

The module performs a self-test at power-up. The self-test includes an LED test and a device test. During the LED test, the indicators will be turned on independently and in sequence for approximately 0.25 seconds.

The device test occurs after the LED test. The Module Status (MS) indicator is used to indicate the status of the device self-test.

MS Indicator State Description

Flashing Red and Green Device self-test is in progress. Solid Green or Flashing Green Device self-test completed successfully,

and the firmware is valid and running.

Flashing Red Device self-test completed, the hardware is

OK, but the firmware is invalid. Or, the firmware download is in progress.

Solid Red Unrecoverable fault, hardware failure, or

Boot Loader program may be corrupted.

Refer to Module Indicators on page 38 for more information about the LED indicators.

Manually Resetting Relays

The XM-121 has an external reset switch located on top of the module, as shown in Figure 2.25.

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42 Installing the Absolute Shaft Module

IMPORTANT

Press the Reset Switch to reset the relays

TIP

Figure 2.25 Reset Switch

The switch can be used to reset all latched relays in the module. This includes the relays in the Expansion Relay Module when it is attached to the XM-121 module.

Installing the XM-121 Absolute Shaft Firmware

The Reset switch resets the relays only if the input is no longer in alarm or the condition that caused the alarm is no longer present.

Before you can use the XM-121 Absolute Shaft module, you must install the Absolute Shaft firmware onto the XM-121 Low Frequency Dynamic Measurement module. The Absolute Shaft firmware is provided on the XM Documentation and Configuration Utility CD (version 5.0 or later) that is packaged with the XM modules.

XM firmware update files are available for download from the XM Firmware Update page at http://support.rockwellautomation.com

Complete the following steps to install the XM-121 Absolute Shaft firmware.

1. Make certain you have installed the XM Serial Configuration Utility onto the computer that will be connected directly to the XM-121 module. Refer to the XM-12X Dynamic Measurement Modules Installation Instructions for assistance.

2. Insert the XM Documentation and Configuration Utility CD into the CD-ROM drive of the computer.

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Installing the Absolute Shaft Module 43

TIP

3. Connect the computer to the XM-121 module using the special serial cable. Refer to Serial Port Connection on page 34.

4. Power up the XM-121 module if you haven’t already done so, and start the XM Serial Configuration Utility program. Click the Start program, and then select Programs > Entek > XM > Serial Config Utility.

The Serial Configuration Utility defaults to the COM 1 serial port. If you are not using COM 1, select the correct COM port on the XM Serial Configuration Utility screen.

When you are connected to an XM-121 module, the XM-121 module type appears on the XM icon, and the connection icon changes to show the connection.

5. Click the Configure button on the XM Serial Configuration Utility screen. The XM-121 LF Dynamic Measurement Module Configuration Tool sc reen a ppea r s.

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44 Installing the Absolute Shaft Module

Click this button to update the device with the Absolute Shaft firmware

TIP

6. Click the Module tab.

7. In the Firmware Update group, click Update Firmware to initiate the firmware update. The Open dialog box appears.

8. Navigate to the Firmware directory on the CD and select the

“xm12A.nvs” file.

9. Click Open to start the firmware update and click Yes to confirm. The Configuration Tool begins the update and shows its progress in the

Progress dialog box.

10. When the update completes, the message "The module is configured

with the factory defaults. You need to download a configuration." appears. Click OK.

11. Click OK again to return to the XM Serial Configuration Utility screen. Notice that the XM Module icon displays XM-121A instead of XM-121.

12. You are now ready to configure the Absolute Shaft module. Click the Configure button to display the Absolute Shaft parameters in the

Configuration Tool. Refer to Chapter 3 for a complete list of the Absolute Shaft configuration parameters.

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Review and edit the Absolute Shaft parameters as necessary. When you are finished, download the parameters to the module. The module will remain in Program mode until you download a configuration. For assistance on how to use the XM Serial Configuration Utility, refer to the online help.

Chapter

IMPORTANT

Configuration Parameters

This chapter provides a complete listing and description of the Absolute Shaft parameters. The parameters can be viewed and edited using the XM Serial Configuration Utility software and a personal computer. If the module is installed on a DeviceNet network, configuring can also be performed using a network configuration tool such as RSNetWorx (Version 3.0 or later). Refer to your configuration tool documentation for instructions on configuring a device.

For information about See page

Channel Parameters 46 Signal Processing Parameters 48 Measurement Parameters 48 Tachometer Parameters 52 Alarm Parameters 55 Relay Parameters 59 4-20 mA Output Parameters 63 Triggered Trend Parameters 64 SU/CD Trend Parameters 66 I/O Data Parameters 68 Data Parameters 69 Device Mode Parameters 72

The appearance and procedure to configure the parameters

The

may differ in different software.

45 Publication GMSI10-UM014D-EN-P - May 2010

46 Configuration Parameters

XM Configuration Utility

EDS File

Enable IEPE IEPE Power

XM Configuration Utility

EDS File

Check = Enable Enabled Clear = Disable Disabled

XM Configuration Utility

EDS File

Sensor Case Sensor

Ty pe

Channel Sensor

Eng. Unit Options

1 ------ mils

µm

2 9100 VO ips

mm/s 9000A g 9100 CSA g 9100 T g

Channel Parameters

The channel parameters define the characteristics of the transducers you will be using with the Absolute Shaft module. Use the parameters to configure the transducer sensitivity, operating range, and power requirements. There are two instances of the channel parameters, one for each channel.

The Absolute Shaft module requires the correct transducers.

• Channel 1 must be connected to a non-contact probe measuring

acceleration in mils or µm.

• Channel 2 must be connected to a 9000 series sensor measuring

acceleration or velocity in ips, mm/sec or g’s.

Channel Parameters

Parameter Name Description Values/Comments Channel Name (XM Serial

Configuration Utility only)

A descriptive name to help identify the channel in the XM Serial Configuration Utility.

Controls whether to provide standard accelerometer (IEPE) power to the transducer (channel 2 only). Refer to Connecting the Transducers on page 27 for wiring requirements.

Maximum 18 characters

Sensitivity The sensitivity of the transducer in millivolts per

Eng. Units Defines the native units of the transducer. Your

Fault Low The minimum, or most negative, expected DC

Fault High The maximum expected DC bias voltage from the

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The type of case sensor wired to channel 2. Options: 9100VO

9000A 9100CSA 9100T

The sensitivity value is included with

Eng. Unit.

choice controls the list of possible selections available in the Output Data Units parameter. It also affects other module parameters.

voltage from the transducer.

transducer.

the transducer’s documentation or it may be imprinted on the side of the transducer.

Volts

Note: A voltage reading outside this range constitutes a transducer fault.

Configuration Parameters 47

Time Constant

(seconds)

-3dB Frequency (Hz)

Settling

(seconds)

1 0.159 2.2 2 0.080 4.4 3 0.053 6.6 4 0.040 8.8

50.03211

60.02713.2

70.02315.4

80.02017.6

90.01819.8

10 0.016 22

Channel Parameters

Parameter Name Description Values/Comments DC Bias Time Constant The time constant used for exponential averaging

Seconds (low pass filtering) of the transducer DC bias measurement. The corner frequency for the low pass filter is 1 / (2

π x DC Bias Time Constant). The

greater the value entered, the longer the settling time of the measured value to a change in the input signal. See example table below.

Full Scale The maximum signal level expected to be processed

Output Data Units The data units of the measured values.

Autoscale (XM Serial Configuration Utility only)

by the channel. This value is used to determine the programmable gain settings across each stage of the channel’s analog signal processing circuit.

Important: The Channel 1 output data units depend on the units you select for Channel 2. If Channel 2 is set to "ips" or "mils" then Channel 1 is set to "mils." If Channel 2 is set to "mm/s or "µm" then Channel 1 is set to "µm."

Calculates a new Full Scale value based upon the current input signal level.

Volt

Important: See Appendix D for further

guidance and recommended Full Scale

value settings.

Channel 2 Options: mils

ips mm/s µm

Enter a safety factor value greater

than or equal to 1.0.

The safety factor is a number that will

be multiplied to the current signal

level to determine the new Full Scale

setting.

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48 Configuration Parameters

Signal Processing

The signal processing parameters determine the signal processing that will be performed on the input signals. Use these parameters to select the high and

Parameters

Signal Processing Parameters

Parameter Name Description Values/Comments Low HPF Frequency (EDS File

only) Medium HPF Frequency (EDS File

only) High HPF Frequency (EDS File

only) Very High HPF Frequency (EDS

File only) High Pass Filter Sets the high pass filter to apply to the

Low Pass Filter Sets the frequency above which the input signal will

low pass filters. The signal processing parameters apply to both channels.

Shows the corner frequency for the Low high pass filter option.

Shows the corner frequency for the Medium high pass filter option.

Shows the corner frequency for the High high pass filter option.

Shows the corner frequency for the Very High high pass filter option.

measurements. The high pass filter is useful in removing low frequency signal components that would dominate the signal. The high pass filter attenuates all frequencies below a defined frequency. It allows, or passes, frequencies above the defined frequency.

Enter a value from 200 to 4000 Hz. be significantly attenuated.

Measurement Parameters

Overall Measurement Parameters

Use the overall measurement parameters to configure the overall measurement. There are two instances of the overall measurement parameters, one for each channel.

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Configuration Parameters 49

High Pass

Filter

Overall Time

Constant

0.8 Hz 0.2 2 Hz 0.08

4Hz or 23.8 Hz 0.045

Overall Measurement Parameters

Parameter Name Description Values/Comments Signal Detection The measurement (or calculation) performed on the

input signal to produce the Overall Value. See Data Parameters on page 69.

• RMS - The Overall Value is the root mean squared

(RMS) signal level of the input signal.

• Calculated Peak - The Overall Value is the

measured RMS value multiplied by the square root of two (1.4142).

• Calculated Peak-to-Peak - The Overall Value is

the measured RMS value multiplied by two times the square root of two (2.8284).

• True Peak - The Overall Value is the output of a

peak detector applied to the input signal.

• True Peak-to-Peak - The Overall Value is the

output of a peak-to-peak detector applied to the input signal.

Overall Time Constant For RMS measurements, the Overall Time Constant

parameter sets the 3-DB bandwidth (Hz) for the digital filtering used to calculate the Overall Value. The 3-dB bandwidth is roughly equal to 1 / (2

π x

Overall Time Constant). The greater the Overall Time Constant, the slower the response of the measured Overall Value to change in the input signal.

For example, an Overall Time Constant of 0.1 seconds may be appropriate for monitoring the Overall Value of an input signal with a fundamental frequency of 1.6 Hz and above. Although, the response to a step change in input will take approximately 2.2 times the Overall Time Constant to settle. Therefore, for an Overall Time Constant of 0.1 seconds, the settling time will be approximately 0.22 seconds.

Options: RMS

Calculated Peak Calculated Peak-to-Peak True Peak True Peak-to-Peak

Important: When changing the signal detection, make certain to check the Overall Time Constant value.

Enter a value greater than 0 (zero).

Recommended Values: The recommended values are appropriate for a typical 50/60Hz machine, and may need to be adjusted depending on the application.

• For True Peak or True

Peak-to-Peak measurements, set

the Overall Time Constant to 1.5.

• For RMS, Calculated Peak, or

Calculated Peak-to-Peak

measurements, set the Overall Time Constant to one of the following:

For True Peak measurements, the Overall Time Constant sets the decay rate of the peak detection meter. The greater the Overall Time Constant, the slower the Peak is decayed.

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50 Configuration Parameters

Overall Measurement Parameters

Parameter Name Description Values/Comments Overall Damping Factor This parameter is used in conjunction with the

Overall Time Constant to vary the characteristics

of the response of the digital filter used in calculating the Overall Value.

An overall value for a measurement with a damping factor near 1.0 (critical damping) will slowly rise or fall for the full settling time specified by the Overall Time Constant before reaching the final value. An overall value for a measurement with a damping factor near 0.707 will rise or fall quickly and may "overshoot" (measure a value greater or less than the final value) before reaching the final value for a given input signal.

Enter a value from 0.707 to 1.0.

Waveform Measurement Parameters

Use the waveform measurement parameters to set up the waveform measurements. The waveform measurement parameters apply to both channels.

Waveform Measurement Parameters

Parameter Name Description Values/Comments Number of Points The number of samples in the waveform

measurement.

Waveform Period The total period of the waveform measurement. Seconds FMAX (Hz) (XM Serial

Configuration Utility only)

Displays the maximum frequency included in the waveform measurement.

Options: 256

512 1024 2048

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Configuration Parameters 51

TIP

Table 3.A FMAX for Combinations of Waveform Period & Number of Points

Number of Points

Period (seconds) 256 512 1024 2048

0.02 5000 x x x

0.2 500 1000 2000 4000 2 50 100 200 400 20 x 10 20 40 80 xxx10

The Wavefor m Period and the Number of Points must be configured such that the FMAX (Number of Points/(2.56 x waveform period)) is from 10 Hz to 9375 Hz.

The table below shows some example settings for these parameters. Note that the Waveform Period may be rounded up to the next closes period due to available sampling rates. Combinations that will be rounded are indicated with an "x".

Vector Measurement Parameters

Use these parameters to select and define the filter used to track the machine speed multiple. The vector measurement parameters apply to both channels.

Vector Measurement Parameters

Parameter Name Description Values/Comments Tracking Filter The type of filter used to track the machine speed

multiple.

• Bandwidth - The bandwidth of the filter remains

the same at all machine speeds.

• Q - The ratio of the bandwidth to the center

frequency (machine speed) remains the same.

Bandwidth Enter the bandwidth for the Bandwidth filter. The

bandwidth is a measure of the width of a filter.

Options: Bandwidth

Enter a value from 0.1 to 25 Hz.

Note: This value is used only when Bandwidth is selected as the

tracking filter type.

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52 Configuration Parameters

Time Constant (milliseconds)

-3dB Frequency (Hz)

Settling Time

(milliseconds)

5 31.8310 11 10 15.9155 22 20 7.9577 44 50 3.1831 110

100 1.5915 220

1200 0.1326 2640

Vector Measurement Parameters

Parameter Name Description Values/Comments Q Enter the Q value for the Q filter. Q is the measure of

the sharpness of a filter

Enter a value from 1 to 200 Hz.

Note: This value is used only when Q is selected as the tracking filter type.

Important: The tracking filter bandwidth in Constant Q mode is limited between 0.5 and 15 Hz.

Speed Measurement Parameter

Use the speed measurement parameter to configure the filtering performed on the speed measurement.

Speed Measurement Parameter

Parameter Name Description Values/Comments Exponential Averaging Time

Constant

Tachometer Parameters

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Sets the 3-dB bandwidth for the digital filter used to calculate the Speed Value and Acceleration Measured Value. The 3-dB bandwidth is roughly equal to 1 / (2 Constant). The greater the value entered, the longer the response of the measured Speed Value and Acceleration Measured Value to a change in the input signal (less sensitive to noise in the signal). See example table below.

π x Exponential Averaging Time

The tachometer parameters define the characteristics of the tachometer and determine the signal processing that will be performed on the tachometer signal.

Configuration Parameters 53

Time Constant

(seconds)

-3dB Frequency (Hz)

Settling

(seconds)

1 0.159 2.2 2 0.080 4.4 3 0.053 6.6 4 0.040 8.8

50.03211

60.02713.2

70.02315.4

80.02017.6

90.01819.8

10 0.016 22

Tachometer Transducer Parameters

Parameter Name Description Values/Comments Tachometer Name (XM Serial

Configuration Utility only)

A descriptive name to help identify the tachometer in the XM Serial Configuration Utility software.

Maximum 18 characters

Fault Low The minimum, or most negative, expected DC

voltage from the transducer.

Fault High The maximum expected DC voltage from the

transducer.

DC Bias Time Constant The time constant used for exponential averaging

(low pass filtering) of the transducer DC bias measurement. The corner frequency for the low pass filter is 1 / (2 x

π x DC Bias Time Constant). See

example table below.

Volts

Note: A voltage reading outside this range constitutes a transducer fault.

Seconds

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54 Configuration Parameters

IMPORTANT

XM Configuration Utility

EDS File

Speed Multiplier Tach

Multiplier

XM Configuration Utility

EDS File

Auto Trigger Trigger

Mode

XM Configuration Utility

EDS File

Check = Auto Mode Auto Clear = Manual

Mode

Manual

Tachometer Signal Processing Parameters

The Absolute Shaft module requires the tachometer to track the machine speed (tracking filter) and to calculate the 1X measurements.

If you are not using the tachometer channel, set the Pulses Per Revolution to zero. This will disable the tachometer measurement, and prevent the module from indicating a tachometer fault.

Tachometer Signal Processing Parameters

Parameter Name Description Values/Comments Pulses Per Revolution The number of tachometer signal pulses per

revolution of the shaft (number of gear teeth). This setting is useful if a proximity probe located over a gear or shaft with a multi-toothed speed sensing surface is used to generate the input signal.

The input tachometer signal is multiplied by this value to obtain the measured speed.

Fault Time-Out The number of seconds the module should wait after

the last valid tach pulse before it indicates a tachometer fault.

Sets the trigger mode. In Auto Trigger mode, the minimum signal amplitude for triggering is 2 volts peak-to-peak and minimum frequency is 6 CPM (0.1 Hz).

Enter zero if you are not using the tachometer channel to disable the tachometer measurement.

Note: When pulses per revolution is greater than 1, the module will not consistently synchronize to the same pulse, and the phase measurement may change if the module’s synchronizes on a different pulse.

Important: The tachometer signal is required (Pulses Per Revolution set to 1 or more) for the speed and 1X measurements.

This value must be greater than zero.

Enter a value from 1 to 64 seconds.

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In Manual Trigger mode, the value entered in Trigger Threshold is used as the trigger point. Minimum signal amplitude for triggering is 500 millivolts peak-to-peak and minimum frequency is 1 CPM.

Configuration Parameters 55

Tachometer Signal Processing Parameters

Parameter Name Description Values/Comments Trigger Hysteresis The amount of hysteresis around the trigger

threshold. In Auto Trigger mode, the value entered is a percentage of the peak-to-peak input signal. This value can range from 0 to 50%.

In Manual Trigger mode, the value entered is a voltage level. The hysteresis voltage is added to or subtracted from the threshold voltage to determine the hysteresis range. The minimum value is 0.12 volts.

% in Auto Trigger mode Volt in Manual Trigger mode

Trigger Threshold The signal level to be used as the trigger value when

in Manual Trigger mode.

Trigger Slope The input signal slope to be used as the trigger value

when in Manual Trigger mode.

Alarm Parameters

The Alarm parameters control the operation of the alarms (alert and danger

Enter a value from +16 to -16 volts dc.

Note: This value is not used in Auto Trigger mode.

Options: Positive

Note: This value is not used in Auto Trigger mode.

level) and provide alarm status. The Absolute Shaft module provides nine alarms. Each alarm is permanently associated with a corresponding measurement (for example, Channel 1 Shaft Relative Overall alarm, Channel 2 Case Absolute Overall alarm, and so on). Use the parameters to configure which measurement the alarm is associated with, as well as the behavior of the alarm.

Alarm Parameters

Parameter Name Description Values/Comments Alarm (XM Serial Configuration

Utility only)

Name (XM Serial Configuration Utility only)

Sets the alarm to be configured in the XM Serial Configuration Utility. Each alarm is associated with a particular measurement.

A descriptive name to identify the alarm in the XM Serial Configuration Utility.

Options: Ch. 1 SR (shaft relative)

Maximum 18 characters

Negative

Overall Ch. 2 CA (case absolute) Overall Ch. 1 SR 1X Mag Ch. 2 CA 1X Mag Shaft Absolute Overall Shaft Absolute 1X Mag Ch. 1 DC Bias Ch. 2 DC Bias Speed

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56 Configuration Parameters

XM Configuration Utility

EDS File

Check to Enable Enabled Clear to Disable Disabled

Alarm Parameters

Parameter Name Description Values/Comments Enable Enable/disable the selected alarm.

Note: The Alarm Status is set to "Disarm" when the

alarm is disabled.

Condition Controls when the alarm should trigger.

• Greater than - Triggers the alarm when the

measurement value is greater than or equal to the Alert and Danger Threshold values.

The Danger Threshold value must be greater than or equal to the Alert Threshold value for the trigger to occur.

• Less than - Triggers the alarm when the

measurement value is less than or equal to the Alert and Danger Threshold values.

The Danger Threshold value must be less than or equal to the Alert Threshold value for the trigger to occur.

• Inside range - Triggers the alarm when the

measurement value is equal to or inside the range of the Alert and Danger Threshold values.

The Danger Threshold (High) value must be less than or equal to the Alert Threshold (High) value AND the Danger Threshold (Low) value must be greater than or equal to the Alert Threshold (Low) value for the trigger to occur.

• Outside range - Triggers the alarm when the

measurement value is equal to or outside the range of the Alert and Danger Threshold values.

The Danger Threshold (High) value must be greater than or equal to the Alert Threshold (High) value, AND the Danger Threshold (Low) value must be less than or equal to the Alert Threshold (Low) value for the trigger to occur.

Options: Greater Than

Less Than Inside Range Outside Range

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Configuration Parameters 57

Alarm Parameters

Parameter Name Description Values/Comments Alert Threshold (High)

The threshold value for the alert (alarm) condition.

Same measurement unit as Output

Data Unit selection for the specified

Note: This parameter is the greater threshold value

channel.

when Condition is set to "Inside Range" or "Outside Range."

Danger Threshold (High) The threshold value for the danger (shutdown)

condition.

Note: This parameter is the greater threshold value when Condition is set to "Inside Range" or "Outside Range."

Alert Threshold (Low) The lesser threshold value for the alert (alarm)

condition.

Note: This parameter is not used when Condition is set to "Greater Than" or "Less Than."

Danger Threshold (Low) The lesser threshold value for the danger (shutdown)

condition.

Note: This parameter is not used when Condition is set to "Greater Than" or "Less Than."

Hysteresis The amount that the measured value must fall

(below the threshold) before the alarm condition is cleared. For example, Alert Threshold = 120 and Hysteresis = 2. The alarm (alert) activates when the measured value is 120 and will not clear until the measured value is 118.

Note: The Alert and Danger Thresholds use the same hysteresis value.

Note: For the Outside Range condition, the hysteresis value must be less than Alert Threshold

(High) – Alert Threshold (Low).

Startup Period The length of time that the Threshold Multiplier is

applied to the thresholds. The startup period begins when the setpoint multiplier switch is reopened (push button disengaged or toggle switch flipped to off).

Same measurement unit as Output Data Unit selection for the specified channel.

Enter a value from 0 to 1092 minutes, adjustable in increments of 0.1 minutes.

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58 Configuration Parameters

XM Configuration Utility

EDS File

Check means inhibit tachometer fault

Inhibit Tach Fault

Clear means do not inhibit tachometer fault

Do not inhibit

XM Configuration Utility

EDS File

Check to Enable Enabled Clear to Disable Disabled

Alarm Parameters

Parameter Name Description Values/Comments Threshold Multiplier The action to take when the setpoint multiplier

switch is closed (push button engaged or toggle

Enter any fractional value between 0

and 10. switch flipped to on) and during the startup period once the switch is reopened. The module applies the multiplier to the alarm thresholds during this time to

Enter 0 (zero) to disabled the alarm

during the startup period. avoid false alarms at resonance frequencies.

Note: The multiplication may have the opposite of the intended effect under certain circumstances. For example, if the Condition is set to "Less Than" and the thresholds are positive, then multiplication of the threshold values increases the likelihood of the measured value being within the alarm range. Therefore, you may want to set Threshold Multiplier to zero to disable the alarm during the startup period.

Inhibit Tachometer Fault Controls whether to inhibit the tachometer fault

during the startup period.

During startup, the machine may be turning very slowly and cause the XM module to detect a tachometer fault. The Alarm status will state that a tachometer fault condition exists unless the tachometer fault is inhibited.

Speed Range Enable Controls whether the selected alarm is enabled only

when the measured speed is within a machine speed range. Enter the machine speed range in Speed

Range High and Speed Range Low.

Speed Range Low The lesser threshold of the machine speed range.

This value must be less than the Speed Range High value.

This parameter is not used when Speed Range Enabled is disabled.

Speed Range High The greater threshold of the machine speed range.

This value must be greater than the Speed Range Low value.

Note: The tachometer must be

enabled (Pulses Per Revolution set

to 1 or more) and a tachometer signal

must be provided at the tachometer

input when Speed Range Enable is

enabled.

RPM

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This parameter is not used when Speed Range Enabled is disabled.

Configuration Parameters 59

IMPORTANT

XM Configuration Utility

EDS File

Check to Enable Enabled Clear to Disable Disabled

Relay Parameters

The Relay parameters control the operation of the on-board relay, as well as the relays on the Expansion Relay (XM-441) module. Use these parameters to configure which alarm(s) the relay is associated with, as well as the behavior of the relay.

A relay can be defined, regardless of whether or not it is physically present. A non-physical relay is a virtual relay. When a relay (physical or virtual) activates, the module sends a Change of State (COS) message to its master, which acts on the condition as necessary. An XM-440 Master Relay Module can activate its own relays in response to a relay (physical or virtual) activation at any of its slaves.

Relay Parameters

Parameter Name Description Options/Comments Number (XM Serial Configuration

Utility only)

Sets the relay to be configured in the XM Serial Configuration Utility.

Relay Number 1 is the on-board relay.

Numbers 2 through 5 are either relays

on the Expansion Relay module when

it’s connected to the module or virtual

relays.

Virtual relays are non-physical relays.

Use them when you want the effect of

the relay (monitor alarms, delay, and

change status) but do not need an

actual contact closure. For example, a

PLC or controller monitoring the relay

status.

Name (XM Serial Configuration Utility only)

Enable Enable/disable the selected relay.

A descriptive name to help identify the relay in the XM Serial Configuration Utility.

Note: The Relay Current Status is set to "Not Activated" when the relay is disabled. See page 69.

Note: The Relay Installed parameter

indicates whether a relay is a virtual

relay or a physical relay on a module.

Maximum 18 characters

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60 Configuration Parameters

XM Configuration Utility

EDS File

Latching Latching

Option

XM Configuration Utility

EDS File

Check means latching (relay must be explicitly reset)

Latching

Clear means non-latching (relay is reset once the alarm condition has passed)

Nonlatching

XM Configuration Utility

EDS File

Activation Logic Logic

XM Configuration Utility

EDS File

Alarm A/B Alarm

Identifier A/B

Relay Parameters

Parameter Name Description Options/Comments

Controls whether the relay must be explicitly reset after the alarm subsides.

Activation Delay Enter the length of time for which the Activation

Logic must be true before the relay is activated. This

reduces nuisance alarms caused by external noise and/or transient vibration events.

Important: True Peak and True Peak-to-Peak signal detection is more sensitive to transients and noise. To avoid false relay trips, it is strongly recommended that the Activation Delay value is greater than the

Overall Time Constant value when Signal Detection is set to "True Peak" or "True

Peak-to-Peak." Refer to Overall Measurement Parameters on page 48.

Sets the relay activation logic.

• A or B - Relay is activated when either Alarm A or

Alarm B meets or exceeds the selected Alarm Status condition(s).

• A and B - Relay is activated when both Alarm A

and Alarm B meet or exceed the selected Alarm Status condition(s).

• A Only - Relay is activated when Alarm A meets

or exceeds the selected Alarm Status condition(s).

Sets the alarm(s) that the relay will monitor. The alarm must be from the same device as the relay. When the Activation Logic is set to "A and B" or "A or B," you can select an alarm in both Alarm A and Alarm B. The system monitors both alarms. When the Activation Logic is set to "A Only," you can select only an alarm in Alarm A.

Enter a value from 0 to 25.5 seconds,

adjustable in increments of 0.1

seconds.

Default is 1 second

Options: A only

A or B A and B

Options: Ch 1 SR Overall

Ch 2 CA Overall Ch 1 SR 1X Magnitude Ch 2 CA 1X Magnitude Shaft Absolute Overall Shaft Absolute 1X Magnitude Ch 1 DC Bias Ch 2 DC Bias Speed

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Note: You can only select an alarm

that is enabled.

Configuration Parameters 61

XM Configuration Utility

EDS File

Alarm Status to Activate On

Alarm Levels

XM Configuration Utility

EDS File

Check = Physical Relay

Installed = Physical Relay

Clear = Virtual Relay Not Installed =

Virtual Relay

Relay Parameters

Parameter Name Description Options/Comments

Sets the alarm conditions that will cause the relay to activate. You can select more than one.

Options: Normal

Danger Xdcr Fault

• Normal - The current measurement is not within

excess of any alarm thresholds.

• Alert - The current measurement is in excess of

the alert level threshold(s) but not in excess of the

Tacho Fault Alert Disarm Module Fault

danger level threshold(s).

• Danger - The current measurement is in excess of

the danger level threshold(s).

Check to enable.

Clear to disable.

• Disarm-The alarm is disabled or the device is in

Program mode.

• Xdcr Fault - The transducer’s DC bias

measurement is outside of the transducer’s Fault High/Fault Low range.

• Module Fault - Hardware or firmware failure, or

an error has been detected and is preventing proper operation of the device.

• Tacho Fault - A required tachometer signal has

not been detected. Note that there is no transducer fault either.

Relay Installed Indicates whether the relay is a physical relay on a

module or a virtual relay. If the relay is a physical relay, then you can set the Failsafe parameter.

If the relay is a virtual relay, the Failsafe parameter is not used or it is disabled.

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62 Configuration Parameters

XM Configuration Utility

EDS File

Failsafe Relay Failsafe

Option

XM Configuration Utility

EDS File

Check means failsafe

Failsafe

Clear means non-failsafe

Nonfailsafe

Relay Parameters

Parameter Name Description Options/Comments

Determines whether the relay is failsafe or non-failsafe.

Failsafe operation means that when in alarm, the relay contacts are in their "normal," de-energized, or "shelf-state" positions. In other words, normally closed relays are closed in alarm, and normally open relays are open in alarm. With failsafe operation, a power failure equals an alarm.

The following are true of a relay in failsafe operation:

• The relay is energized when power is applied to

the module.

• The relay in a nonalarmed condition has power

applied to the coil.

• In alarm condition, power is removed from the

relay coil, causing the relay to change state.

For non-failsafe operation, the following are true:

• Under nonalarm conditions, the relay closes the

circuit between the common and the N.C. (normally closed) terminals.

• Under alarm conditions, the relay changes state to

close the circuit between the common and the N.O. (normally open) terminals.

For failsafe operation, the following are true:

• Under nonalarm (with power applied to the unit)

conditions, the relay closes the circuit between the common and the N.O. terminals.

• Under alarm or loss-of-power conditions, the relay

changes state to close the circuit between the common and the N.C. terminals.

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Configuration Parameters 63

XM Configuration Utility

EDS File

Check to enable Enabled Clear to disable Disabled

IMPORTANT

4-20 mA Output Parameters

The 4-20 mA output parameters define the characteristics of the two 4-20 mA output signals. The parameters are the same for each output.

4-20 mA Output Parameters

Parameter Name Description Options/Comments Enable Enables/disables the 4-20 mA output.

Measurement Sets the type of measurement and the channel that

the 4-20 mA output signal will track.

Min Range The measured value associated with the 4 mA. Same measurement unit as Output Max Range The measured value associated with the 20 mA.

Options: Ch 1 SR Overall

Ch 2 CA Overall Ch 1 SR 1X Magnitude Ch 2 CA 1X Magnitude Shaft Absolute Overall Shaft Absolute 1X Magnitude Ch 1 DC Bias Ch 2 DC Bias Speed

Data Unit selection for the specified

channel.

Measured values between Min Range and Max Range are scaled into the range from 4.0 to 20.0 to produce the output value. The Min Range value does not have to be less than the Max Range value. If the Min Range value is greater than the Max Range value, then the output signal is effectively inverted from the input signal.

The 4-20 mA outputs are either on or off. When they are on, the 4-20 mA outputs overshoot the 4 and 20 mA limits by 10% when the measurement exceeds the minimum and maximum range. This means the minimum current produced is 3.6 mA and the maximum current produced is 22 mA.

When the 4-20 mA outputs are off, they produce a current approximately 2.9 mA. The 4-20 mA outputs are off under the following conditions:

• The 4-20 mA outputs are set to "Disable" (see Enable on the previous page).

• The module is in Program mode.

• A transducer fault or tachometer fault occurs that affects

the corresponding measurement.

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64 Configuration Parameters

IMPORTANT

Triggered Trend Parameters

The Absolute Shaft module can collect a triggered trend. A triggered trend is a time-based trend that is collected when a relay is activated, or the module receives a trigger event.

Once the triggered trend is configured, the XM module continuously monitors the trended measurements. When a trigger occurs, the XM module collects additional data as specified by the Post Trigger parameter. The Absolute Shaft module can also store the waveform at the time of the trigger.

The XM module can only store one triggered trend. Unless the triggered trend is latched, the trend data is overwritten with new data when the next trigger occurs.

The triggered trend parameters define the trend data that is collected by the module. Use these parameters to select the measurements included in the trend records, the interval between trend records, and which relay triggers (activates) the collection of the trend data.

The Triggered Trend parameters are not included in the EDS file and cannot be edited using generic configuration tools such as RSNetWorx for DeviceNet.

Triggered Trend Parameters

Parameter Name Description Values/Comments Enable Triggered Trend

Measurements

Select Measurements Sets the measurements to be collected and stored in

Number of Records The maximum number of measurement sets that can

Latch Enable Determines whether the trigger trend is latched or

Enables/disables the triggered trend measurements. Select to configure the triggered trend measurements.

the module.

be collected in the trend buffer. The measurement sets make up the trend data.

unlatched.

Latched means that subsequent triggers are ignored after the initial trigger. This prevents the trend data from being overwritten with new data until the trigger is manually reset (click Reset Trigger button).

Unlatched means that the trend data is overwritten with new data every time a trigger occurs.

Check to enable. Clear to disable.

More than one measurement can be selected.

The Number of Records is automatically calculated based upon the number of Trended Measurements selected.

Check means latched Clear means unlatched

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Configuration Parameters 65

Triggered Trend Parameters

Parameter Name Description Values/Comments Relay Number Sets the relay that triggers the trend to be collected. None means that the trend can only be

triggered manually or by a trigger event (for example, XM-440).

Relay Numbers 1 through 5 are either relays on the Expansion Relay module when it’s connected to the module or virtual relays.

Note: The relay must be enabled. Refer to Relay Parameters on page 59.

Record Interval The amount of time between consecutive trend

1 to 3600 seconds

records.

Note: If you enter a Record Interval, the Trend Span is automatically updated.

Trend Span The total amount of time that can be covered by the

Seconds

trend data (Number of Records x Record

Interval).

Note: If you edit the Trend Span, the Record Interval is automatically updated.

Post Trigger The percentage of records to be collected once the

0 to 100 Percent trigger occurs. For example, if you set Post Trigger to 20%, then 80% of the records in the trend are before the trigger occurs, and 20% of the records in the trend are after the trigger occurs.

This allows you to evaluate what happened after the trigger occurred.

Status Shows the status of the trend data. Possible status values:

• Not collected - No trend data is

currently collected.

• Collecting - A trigger has occurred

and data (including post-trigger data) is being collected.

• Collected - A trend has been saved

to the buffer and is available to view and upload.

View Trend Data Displays a plot of the collected trend data. Reset Trigger Resets the trigger if Latch enabled is selected. This

allows the module to overwrite the previous trend data when the next trigger occurs.

Manual Trigger Triggers the module to collect the trend data without

relay activation.

View Collected Data Displays a plot of the collected waveform data.

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66 Configuration Parameters

IMPORTANT

SU/CD Trend Parameters

The Absolute Shaft module can collect startup or coast-down trend data when the machine speed passes into a defined speed range. A tachometer input is required to collect the startup/coast-down trend.

The XM module collects a startup trend when the machine speed rises through the Minimum Speed + 8 RPM, and stops when the machine speed crosses either the Minimum Speed or the Maximum Speed. The module collects data only when machine speed is increasing. It does not collect data if the machine speed is constant or decreasing.

The XM module collects a coast-down trend when the machine speed falls through the Maximum Speed - 8 RPM, and stops when the machine speed crosses either the Minimum Speed or the Maximum Speed. The module collects data when the machine speed is decreasing or increasing during a coast-down trend (for example, a coast-down restart).

The XM module can only store one startup/coast-down trend. Unless the startup/coast-down trend is latched, the trend data is overwritten with new data when the next startup or coast-down occurs.

The SU/CD trend parameters define the trend data that is collected by the module during the startup or coast-down of a machine. Use these parameters to configure the measurements included in the startup and coast-down trend records, the interval between trend records, and the minimum and maximum speed limits at which record collection starts and stops.

The SU/CD Trend parameters are not included in the EDS file and cannot be edited using generic configuration tools such as RSNetWorx for DeviceNet.

SU/CD Trend Parameters

Parameter Name Description Values/Comments Enable SU/CD Trend Enables/disables the SU/CD trend measurements.

Select to configure the SU/CD trend measurements.

Select Measurements Sets the measurements to be collected and stored in

the module.

Note: The Speed measurement is always included in the startup/coast-down trend.

Number of Records The maximum number of measurement sets that can

be collected in the trend buffer. The measurement sets make up the trend data.

Check to enable.

Clear to disable.

More than one measurement can be

selected.

The Number of Records is

automatically calculated based upon

the number of Trended

Measurements selected.

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Configuration Parameters 67

SU/CD Trend Parameters

Parameter Name Description Values/Comments Latch Enable Determines whether the startup/coast-down trend is

latched or unlatched.

Check means latched

Clear means unlatched

Latched means that subsequent startup/coast-down trends are ignored after the initial startup/coast-down. This prevents the trend data from being overwritten with new data until the trigger is manually reset (click Reset Trigger button).

Unlatched means that the startup/coast-down trend data is overwritten with new data every time the machine speed crosses into the speed range.

Record Interval The change in speed between consecutive records.

1 to 3600 RPM

Note: If you enter a Record Interval, the Maximum Trend Span is automatically updated.

Maximum Trend Span The maximum change in speed that can be covered

by the trend data (Number of Records x Record Interval).

Note: If you edit the Trend Span, the Record Interval is automatically updated.

Minimum Speed The lesser limit of the speed range in which records

are collected in the startup/coast-down trend. This value must be less than the Maximum Speed value.

Maximum Speed The greater limit of the speed range in which records

are collected in the startup/coast-down trend. This value must be greater than the Minimum Speed value.

RPM

Startup/Coast-down Trend

Considerations:

• The XM module collects a startup

trend when the machine speed rises through the Minimum Speed + 8 RPM, and stops when the machine speed crosses either the Minimum Speed or the Maximum Speed. The module collects data only when the machine speed is increasing. It does not collect data if the machine speed is constant or decreasing.

• The XM module collects a

coast-down trend when the machine speed falls through the Maximum Speed - 8 RPM, and stops when the machine speed crosses either the

Minimum Speed or the Maximum Speed. The module collects data

when the machine speed is decreasing or increasing during a coast-down trend (for example, a coast-down restart).

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68 Configuration Parameters

IMPORTANT

SU/CD Trend Parameters

Parameter Name Description Values/Comments Status Shows the status of the trend data. Possible status values:

• Not collected - No trend data is

currently collected.

• Collecting - A trigger has occurred

and data is being collected.

• Collected - A trend has been saved

to the buffer and is available to view and upload.

View Trend Data Displays a plot of the collected trend data. Reset Trigger Resets the trigger if Latch enabled is selected. This

allows the module to overwrite the previous trend data when the machine speed crosses into the speed range.

I/O Data Parameters

The I/O data parameters are used to configure the content and size of the DeviceNet I/O Poll response message.

The Absolute Shaft module must be free of Poll connections when configuring the Poll Output (Poll Response Assembly) and Poll Size. Any attempt to download the parameters while a master device has established the Poll connection with the XM module will result in an error.

To close an existing Poll connection with an XM-440, switch the XM-440 from Run mode to Program mode. Refer to Changing Operation Modes on page 81.

To close an existing Poll connection with other master devices, remove the module from the scan list or turn off the master device.

I/O Data Parameters

Parameter Name Description Values/Comments COS Size (XM Serial

Configuration Utility only)

The size (number of bytes) of the Change of State (COS) message.

The COS Size cannot be changed.

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COS Output (XM Serial Configuration Utility only)

The Assembly instance used for the COS message. The COS message is used to produce the Alarm and Relay status for the module.

The COS Output cannot be changed.

Refer to COS Message Format on

page 86 for more information.

Configuration Parameters 69

XM Configuration Utility

EDS File

Poll Output Poll

Response Assembly

TIP

I/O Data Parameters

Parameter Name Description Values/Comments Poll Size Sets the size (number of bytes) of the Poll response

message. Decreasing the maximum size will truncate data from the end of the Assembly structure.

Important: If you set the Poll Output to "Custom Assembly," the poll size is automatically set to the actual size of the customized Poll response.

The minimum size is 4 bytes and the

maximum size is 124 bytes.

Assembly Instance Table (XM Serial Configuration Utility only)

Custom Assembly (XM Serial Configuration Utility only)

Data Parameters

Sets the Assembly instance used for the Poll response message. Each Assembly instance contains a different arrangement of the Poll data.

The Poll response message is used by the XM module to produce measured values. It can contain up to 31 REAL values for a total of 124 bytes of data.

Displays the format of the currently selected COS or Poll Assembly instance.

Defines a custom data format for the Poll response. The custom assembly can contain any of the measurement parameters included in Assembly instance 101, as well as alarm and relay configuration parameters.

Options: Assembly Instance 101

Custom Assembly

Refer to Poll Message Format on

page 85 for more information.

The highlighted (yellow) Assembly

structure bytes are included in the I/O

message.

You can select up to 20 parameters.

Refer to Poll Message Format on page

85 for more information.

The Data parameters are used to view the measured values of the input channels, as well as to monitor the status of the channels, alarms, and relays.

To view all the data parameters in the XM Serial Configuration Utility, click the View Data tab.

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70 Configuration Parameters

XM Configuration Utility

EDS File

Transducer Fault Transducer

Status

XM Configuration Utility

EDS File

Xdcr DC Bias Measured

DC Bias

XM Configuration Utility

EDS File

Speed Status Transducer 3

Status

Monitor Data Parameters

Parameter Name Description Values/Comments Overall Shows the measured overall value for the calculated

shaft absolute, non-contact probe (Channel 1), and vibration sensor on the case (Channel 2).

Magnitude Shows the magnitude shaft absolute vibration value. Requirement: The tachometer must Phase Shows the shaft absolute vibration phase value.

States whether a transducer fault exists on the associated channel.

If a fault exists, the overall, magnitude, phase, and gap values may not be accurate.

be enabled (Pulses Per Revolution

set to 1 or more), and a tachometer

signal must be present.

Possible status values: No Fault

Fault

1X Magnitude Shows the magnitude of the vibration at machine

speed.

1X Phase Shows the phase of the vibration at machine speed.

Shows the measured average DC offset of the transducer signal. This value is compared with Fault High and Fault Low to determine whether the transducer is working properly.

States whether a fault condition (no tachometer signal or transducer fault) exists on the tachometer channel. If a fault exists, the speed value may not be accurate.

Speed Value Shows the measured speed value. Requirement: The tachometer must

Peak Speed Shows the greatest measured Speed Value

(positive or negative) since the most recent reset.

Requirement: The tachometer must

be enabled (Pulses Per Revolution

set to 1 or more), and a tachometer

signal must be present.

Possible status values: No Fault

Fault

be enabled (Pulses Per Revolution

set to 1 or more), and a tachometer

signal must be present.

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Configuration Parameters 71

Alarm and Relay Status Parameters

Parameter Name Description Values/Comments Alarm Status States the current status of the alarm. Possible status values:

• Normal - The alarm is enabled, the

device is in Run mode, there is no transducer fault, and the current measurement is not within the Alert or Danger Threshold value(s).

• Alert - The alarm is enabled, the

device is in Run mode, there is no transducer fault, and the current measurement is in excess of the Alert Threshold value(s) but not in excess of the Danger Threshold value(s).

• Danger - The alarm is enabled, the

device is in Run mode, there is no transducer fault, and the current measurement is in excess of the Danger Threshold value(s).

• Disarm-The alarm is disabled or the

device is in Program mode.

• Transducer Fault - The alarm is

enabled, the device is in Run mode, and a transducer fault is detected on the associated transducer.

• Tachometer Fault - The alarm is

enabled, the device is in Run mode, a tachometer fault exists, but there is no transducer fault.

• Module Fault - Hardware or

firmware failure, or an error has been detected and is preventing proper operation of the device.

Relay Status States the current status of the relay. Possible status values: Activated

Not Activated

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72 Configuration Parameters

IMPORTANT

Device Mode Parameters

The Device Mode parameters are used to control the functions and the behavior of the device.

The XM Serial Configuration Utility handles these parameters automatically and transparently to the user.

Device Mode Parameters

Parameter Name Description Values/Comments Device Mode Sets the current operation mode of the device. Refer

to Changing Operation Modes on page 81 for more information.

Autobaud Enables/disables autobaud.

When autobaud is set to "Enabled," the module will listen to other devices on the network to determine the correct baud rate to use for communications. When autobaud is set to "Disabled," the module baud rate must be set manually.

Options: Run Mode

Options: Enabled

Program Mode

Disabled

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Appendix

Specifications

The Appendix lists the technical specifications for the Absolute Shaft module.

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Communications

DeviceNet

Standard DeviceNet protocol for all functions

NOTE: The XM-121 uses only the DeviceNet protocol, not power. Module power is provided independently.

Available Electronic Data Sheet (EDS) file provides support for most DeviceNet compliant systems Baud rate automatically set by bus master to 125 kb, 250 kb, 500 kb Configurable I/O Poll Response size and Assembly helps optimize space utilization within scanner input tables.

Side Connector

Serial

All XM measurement and relay modules include side connectors that allow interconnecting adjacent modules, thereby simplifying the external wiring requirements. The interconnect provides primary power, DeviceNet communication, and the circuits necessary to support expansion modules, such as the XM-441 Expansion Relay module.

RS-232 via mini-connector or terminal base unit

Baud rate fixed at 19200.

NOTE: Local configuration via Serial Configuration Utility.

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74 Specifications

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Inputs

Channel 1

Eddy current transducer Supports 5, 8, & 11 mm Allen-Bradley 2100 Series and Bently Nevada 3300 XL Series probes

Tachometer

Channel 2

Transducer Power

Voltage Range

Sensitivity

Input Impedance

1 Tachometer Input

Input Impedance

Case Mounted Sensor Supports the following sensors: 9000A Gen. Purpose Accel 9100VO Vel Output Accel 9100 CSA Gen Purpose Accel 9100T High Temp Accel

Constant voltage (-24V dc)* Constant current (4.5 mA ±20% from 24 V supply) None (voltage input)

*Tachometer may be powered, constant voltage, or configured as voltage input.

Selectable in software as 0 to ±20 V (min) 40 V max. peak-to-peak

User configurable in software

Greater than 100 k

±25 V (50 V max. peak to peak) 1 to 50,000 events per revolution

120 k minimum

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Speed/Frequency Range

Speed Measurement Error

Pulses per Revolution

Max Rate of Change of Speed

1 to 1,200,000 RPM

0.0167 to 20,000 Hz

1 to 120 RPM ± 0.2 RPM 121 to 600 RPM ± 1 RPM 601 to 4000 RPM ± 2 RPM 4001 to 24,000 RPM ± 10 RPM 24,001 to 120,000 RPM ± 20 RPM 120,001 to 600,000 RPM ± 80 RPM 600,001 to 1,200,000 RPM ± 160 RPM

0 (tach disabled) to 50,000

500 Hz/sec

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Outputs

4-20 mA Outputs

Each output is independently programmed to represent any measured parameter, from either channel Two isolated outputs 300 ohm max load

Specifications 75

Indicators

Signal Conditioning

Buffered Outputs

7 LEDs Module Status - red/green

Tracking Filter

Frequency Range

Resolution

Accuracy (minimum)

1 active buffer per vibration input channel Resistive buffer for tachometer

Network Status - red/green Channel 1 Status - yellow/red Channel 2 Status - yellow/red Tachometer Status - yellow/red Setpoint Multiplier -yellow Relay - red

User configurable in software Constant Bandwidth (0.1 to 25 Hz) Constant Q (adjustable 1 to 200 with 0.5 to 15 Hz bandwidth limit) Stopband attenuation > 57 dB Speed range: 4 to 1000 Hz (240 to 60,000 rpm)

1 to 10,000 Hz

A/D Conversion: 24 bits Dynamic Range: <80 dBfs (0.01% fs), -90 dBfs (typical)

±1% of channel full scale

Complex Data

Phase Accuracy

Amplitude Range

High Pass Filter

3 degrees above 600 RPM

±21 V

User configurable in software

0.8, 2, 4, or 23.8 Hz

-80 dB/decade rolloff

Low Pass Filter

Adjustable: 600 to 4000 Hz

-40 dB/decade rolloff

Time Waveform Block Size: 256, 512, 1024, 2048

Period: 0.02 to 80 seconds

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76 Specifications

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Measured Parameters

Shaft Relative

(Eddy Current Probe)

Overall 1x Magnitude 1x Phase Gap (volts)

Alarms

Case Absolute

(Velocity or Accelerometer)

Shaft Absolute

(Calculated)

Speed

Number

Operators

Output units selectable as either Velocity or Displacement Overall 1X Magnitude 1X Phase Bias (volts)

Overall 1X Magnitude 1X Phase

RPM

9 alarm and danger pairs Shaft Absolute Overall Shaft Absolute 1X Magnitude Shaft Relative Overall Casing Absolute Overall Shaft Relative 1X Magnitude Casing Absolute 1X Magnitude Probe Gap Accelerometer Bias Speed

Greater than Less than Inside range Outside range

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Hysteresis

Startup Inhibit/Set Point Multiplication

Speed Inhibit

User configurable in software

Period: 0 to 1092 minutes in 0.1 minute increments Inhibit/Multiplication Function: Multiply by N (0 to 10, 0 = Disarm)

A speed range may be specified for each alarm. When applied, the alarm is disabled when speed is outside of the defined range.

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Relays

Number

Single on-board relay, two sets of contacts DPDT (2 Form C) Four additional relays when interconnected to an XM-441 Expansion Relay module, or Four virtual relays whose status can be used by remote Control Systems or the XM-440 Master Relay module

Specifications 77

On-board Relay Rating

Failsafe

Latching

Time Delay

Voting Logic

Reset

Maximum Voltage: 120V dc, 125V ac Maximum Current: 3.5 A* Minimum Current: 0 Maximum Power: 60 W, 62.5 VA

*Max current is up to 40°C, then derates to 2 A

at 65°C

Agency Rating: 120V ac @ 0.5 A 110V dc @ 0.3 A 30V dc @ 1.0 A

Normally energized (failsafe), or Normally de-energized (non-fail-safe)

Latching, or Non-latching

0 to 25.5 seconds, adjustable in 100msec increments

Single or paired "And" or "Or" logic applied to any alarm

Local reset switch on top of module Remote reset switch wired to terminal base Digital reset command via serial or DeviceNet interface

Activation On

Alarm Status:

Normal Alert Danger Disarm Transducer fault Module fault Tacho fault

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78 Specifications

XM-121 Absolute Shaft Technical Specifications

Product Feature Specification

Non-Volatile Configuration A copy of the module configuration is

retained in non-volatile memory from where it is loaded upon power up*.

*The configuration stored in non-volatile

memory can be deleted only by a module-reset command sent via the serial interface, using the Serial Configuration Utility, or via DeviceNet from any compliant software application.

Accuracy (minimum) ±1% of full scale range for the channel

±1% of alarm setpoint for speed

Power

Module

+21.6 to +26.4V dc

Environmental

Physical

Consumption

Heat Production

Transducer

Operating Temperature

Storage Temperature

Relative Humidity

Conformal Coating

Dimensions

Terminal Screw Torque

Maximum: 300 mA Typical: 175 mA

Maximum: 7 Watts (24 BTU/hr) Typical: 4 Watts (14 BTU/hr)

Isolated 24V dc, user configurable with wiring

-20 to +65°C (-4 to +149°F)

-40 to +85°C (-40 to +185°F)

95% non-condensing

All printed circuit boards are conformally coated in accordance with IPC-A-610C.

Height: 3.8 in (97 mm) Width: 3.7 in (94 mm) Depth: 3.7 in (94 mm)

7 pound-inches (0.6 Nm)

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XM-121 Absolute Shaft Technical Specifications

UL UL Listed for Ordinary

Locations

UL UL Listed for Class I, Division 2

Group A, B, C, and D Hazardous Locations

CSA CSA Certified Process Control

Equipment

CSA CSA Certified Process Control

Equipment for Class I, Division 2 Group A, B, C, and D Hazardous Locations

EEX* European Union 94/9/EEC ATEX

Directive, compliant with EN 50021; Potentially Explosive Atmospheres, Protection “n”

CE* European Union 89/336/EEC

EMC Directive

C-Tick* Australian

Radiocommunications Act, compliant with: AS/NZS 2064, Industrial Emissions

Product Feature Specification

Approvals (when product or packaging is marked)

Specifications 79

*See the Product Certification link at

www.rockwellautomation.com for Declarations of Conformity, Certificates and other certification details.

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80 Specifications

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DeviceNet Information

IMPORTANT

Appendix

Electronic Data Sheets

Changing Operation Modes

Electronic Data Sheet (EDS) files are simple text files used by network configuration tools such as RSNetWorx (Version 3.0 or later) to help you identify products and easily commission them on a network. The EDS files describe a product’s device type, product revision, and configurable parameters on a DeviceNet network.

The EDS files for the XM modules are installed on your computer with the XM configuration software. The latest EDS files can also be obtained at http://www.ab.com/networks/eds/ or by contacting your local Rockwell Automation representative.

Refer to your DeviceNet documentation for instructions on registering the EDS files.

XM modules operate in two modes.

Mode Description

Run The XM measurement modules collect measurement data and

monitor each measurement device. The XM-440 establishes I/O connections with the XM measurement modules in its scan list and monitors their alarms, and controls its own relay outputs accordingly.

Program The XM module is idle.

The XM measurement modules stop the signal processing/measurement process, and the status of the alarms is set to the disarm state to prevent a false alert or danger status. The XM-440 closes the I/O connections with the XM measurement modules in its scan list and stops monitoring their alarms, relays are deactivated unless they are latched. Configuration parameters can be read, updated and downloaded to the XM module.

To change the operation mode of the module, use the Device Mode parameter in the EDS file. Note that the Stop and Start services described on page 83 can also be used to change the operation mode.

The XM Serial Configuration Utility software automatically puts XM modules in Program mode and Run mode without user interaction.

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82 DeviceNet Information

TIP

Transition to Program Mode

Parameter values can only be downloaded to an XM module while the module is in Program mode. Any attempt to download a parameter value while the module is in Run mode will result in a Device State Conflict error.

To transition an XM module from Run mode to Program mode on a DeviceNet network, set the Device Mode parameter to "Program mode" and click Apply. Note that you cannot change any other parameter until you have downloaded the Program mode parameter.

The Module Status indicator flashes green when the module is in Program mode.

Refer to your DeviceNet documentation for specific instructions on editing EDS device parameters.

You can also use the Stop service described on page 83 to transition XM modules to Program mode.

Transition to Run Mode

In order to collect data and monitor measurement devices, XM modules must be in Run mode. To transition an XM module from Program mode to Run mode on a DeviceNet network, set the Device Mode parameter to "Run mode" and click Apply.

The Module Status indicator is solid green when the module is in Run mode.

Refer to your DeviceNet documentation for specific instructions on editing EDS device parameters.

You can also use the Start service described on page 83 to transition XM modules to Run mode.

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DeviceNet Information 83

XM Services

Action

Transition to Run Mode Start

Transition to Program Mode Stop

Save configuration to non-volatile memory (EEPROM)

Delete saved configuration from non-volatile memory (EEPROM)

Reset a specific latched relay Reset

Reset all latched relays Reset

The table below defines services supported by the XM modules. The table includes the service codes, classes, instances, and attributes by their appropriate hexadecimal codes. Use the Class Instance Editor in RSNetWorx to execute these services, as illustrated in the example below.

Service Code (Hex)

(06)

(07) Save

(16) Delete

(09)

(05)

Class (Hex) Instance Attribute Data

Device Mode Object (320)

Relay Object (323)

1 None None

Relay number 1-C for XM-440, 1-5 for XM-12X, XM-320 and XM-220, 1-8 for XM-36X and XM-16X

0 None None

None None

Reset the Peak Speed (XM-12X only)

Close the virtual setpoint multiplier switch to activate the alarm setpoint multipliers (not applicable to all XM modules)

Open the virtual setpoint multiplier switch to start the setpoint multiplier timers and eventually cancel alarm setpoint multiplication (not applicable to all XM modules)

Reset (05)

Other (33)

Other (32)

Speed Measurement Object (325)

Discrete Input Point Object (08)

1, 2 for XM-220 None None

1 None None

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84 DeviceNet Information

Select the Save

service code

Clear Send the attribute ID and then enter the Class (320

hex

) and

Instance (1)

Click Execute to initiate the action

Example

To save the configuration parameters to the non-volatile memory (EEPROM), fill in the Class Instance Editor as shown below.

Invalid Configuration Errors

A Start or Save service request to an XM module may return an Invalid Device Configuration error when there is a conflict amongst the configuration settings.

The general error code for the Invalid Device Configuration error is D0

hex

An additional error code is returned with the general error code to specify which configuration settings are invalid. The table below lists the additional error codes associated with the Invalid Device Configuration error.

Additional Error Codes returned with the Invalid Device Configuration Error (0xD0)

Error Code (Hex) Description

01 No specific error information is available. 02 Mismatched transducer, channel, and/or measurement unit. 03 Inverted transducer fault high/low values. 04 Alarm thresholds conflict with the alarm condition. 05 Alarm speed range is invalid. 06 Band minimum frequency is greater than maximum frequency. Or,

07 Relay is associated with an alarm that is not enabled. 08 Tachometer must be enabled for alarm or channel settings. 09 A senseless speed range is enabled on a speed alarm.

maximum frequency is greater than FMAX.

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DeviceNet Information 85

Additional Error Codes returned with the Invalid Device Configuration Error (0xD0)

Error Code (Hex) Description

0A Too many alarms associated with a single measurement. 0B Invalid node address in the alarm list. 0C Too many alarms in the alarm list. Or, no alarms in the alarm list. 0D Alarm levels cannot be zero for alarms that are enabled. 0E Too many slaves in the scanner’s input data table. 0F The FMAX and Number of Lines do not yield correct vector calculations. 10 Phase (vector) alarms prohibited with synchronous sampling and more

than 1 tachometer pulse per revolution. 11 Can’t have order based band on asynchronous channel. 12 Unsupported Sensor Type and Channel ID combination. 13 Invalid Alarm Type for the associated measurement ID. 14 Synchronous sampling is required for alarm on synchronous

measurements. 15 Integration is not supported with the Bypass High Pass Filter option.

Absolute Shaft I/O Message Formats

The Absolute Shaft module supports Poll, Change of State (COS), and Bit-Strobe I/O messages. The Poll response message is used by the XM module to produce measured values and the COS message is used to produce

the Alarm and Relay Status. The Bit-Strobe message is used by a master device to send a trigger event to all the XM slaves on the network.

Poll Message Format

The Absolute Shaft module Poll request message contains no data. The Poll response message can contain up to 31 REAL values for a total of 124 bytes.

The Absolute Shaft module provides one pre-defined (static) data format of the Poll response, as defined in Assembly instance 101. It also provides a dynamic Assembly instance, instance 199, with which you can define a custom data format for the Poll response. The dynamic Assembly instance can contain any of the measurement parameters included in Assembly instance 101, as well as several of the alarm and relay configuration parameters.

The default Assembly instance is 101 and the default size is 48 bytes. You can change the Assembly instance and define the dynamic Assembly using the configuration software. Refer to I/O Data Parameters on page 68.

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86 DeviceNet Information

The Poll response data can also be requested explicitly through Assembly Object (Class ID 0x4), Instance 101 (0x65), Data Attribute (3).

The following table shows the static data format of Assembly instance 101.

Absolute Shaft Assembly Instance 101 Data Format

Byte Definition

0–3 Shaft Absolute Overall 4–7 Channel 1 Shaft Relative Overall 8–11 Channel 2 Case Absolute Overall 12–15 Shaft Absolute 1X Magnitude 16–19 Shaft Absolute 1X Phase 20–23 Channel 1 Shaft Relative 1X Magnitude 24–27 Channel 1 Shaft Relative 1X Phase 28–31 Channel 2 Case Absolute 1X Magnitude 32–35 Channel 2 Case Absolute 1X Phase 36-39 Channel 1 DC Bias 40-43 Channel 2 DC Bias 44-47 Speed

COS Message Format

The Absolute Shaft COS message contains five bytes of data as defined in the table below. The COS data can also be requested explicitly through Assembly Object (Class ID 0x4), Instance 100 (0x64), Data Attribute (3).

Absolute Shaft COS Message Format

Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 Relay 1

Status

1 Relay 2

Status

2 Relay 3

Status

3 Relay 4

Status

4 Relay 5

Status

Set Point Multiplier Alarm 2 Status Alarm 1 Status

Reserved Alarm 4 Status Alarm 3 Status

Reserved Alarm 6 Status Alarm 5 Status

Reserved Alarm 8 Status Alarm 7 Status

Reserved Reserved Alarm 9 Status

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DeviceNet Information 87

XM Status Values

The following tables describe the XM Status values that are included in the COS messages.

Alarm Status Descriptions

Alarm Status Value Description

0Normal 1Alert 2 Danger 3Disarm 4 Transducer Fault (Sensor OOR) 5 Module Fault 6 Tachometer Fault 7 Reserved

Relay Status Descriptions

Relay Status Value Description

0Not Activated 1Activated

Bit-Strobe Message Format

The Bit-Strobe command sends one bit of output data to each XM slave whose node address appears in the master’s scanlist.

The Bit-Strobe command message contains a bit string of 64 bits (8 bytes) of output data, one output bit per node address on the network. One bit is assigned to each node address supported on the network (0...63) as shown in Figure B.1.

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88 DeviceNet Information

IMPORTANT

Figure B.1 Bit-Strobe Command

The XM modules use the bit received in a Bit-Strobe connection as a trigger event. When the bit number corresponding to the XM module’s node address is set, the XM module will collect the triggered trend data.

Note that the XM modules do not send data in the Bit-Strobe response.

ADR for XM Modules

Automatic Device Replacement (ADR) is a feature of an Allen-Bradley DeviceNet scanner. It provides a means for replacing a failed device with a new unit, and having the device configuration data set automatically. Upon replacing a failed device with a new unit, the ADR scanner automatically downloads the configuration data and sets the node address.

It is recommended that ADR not be used in safety related applications. If the failure of the ADR server, and a subsequent power cycle, would result in the loss of protection for a machine, then ADR should not be implemented.

ADR can be used with XM modules but keep the following in mind when setting up the XM modules.

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DeviceNet Information 89

TIP

• The ADR scanner can not download the configuration data to an XM

module if the module has a saved configuration in its non-volatile memory. This happens because the saved configuration is restored and the module enters Run mode when the power is cycled. (Configuration parameters cannot be downloaded while an XM module is in Run mode.) XM modules must be in Program mode for the ADR configuration to be downloaded and this occurs only when there is no saved configuration.

To delete a saved configuration from non-volatile memory, use the Delete service in RSNetWorx for DeviceNet or perform the following steps in the XM Serial Configuration Utility.

1. Save the current configuration to a file. From the File menu, click Save As and enter a file name for

the configuration.

2. Reset the module to factory defaults. Click the Module tab and click the Reset button.

3. Reload the saved configuration. From the File menu, click Open and select the configuration file.

4. Make certain to disable auto save. From the Device

menu, clear the Auto Save Configuration check mark.

• An XM module will enter Run mode automatically after the ADR

scanner restores the module’s configuration only if the module is in Run mode at the time the configuration is saved to the scanner. If the module is in Program mode when the configuration is saved, then the module will remain in Program mode after the configuration is downloaded by the ADR scanner.

• The ADR scanner saves and restores only the configuration parameters

contained in the module’s EDS file. Some XM parameters are not included in the EDS file because they are not supported by either the EDS specification or the tools that read the EDS files, for example RSNetWorx for DeviceNet. These configuration parameters will not be restored with ADR.

Below is a list of the configuration parameters that are not included in the EDS file and can not be saved or restored with ADR.

– Channel Name

– Tachometer Name

– Alarm Name

– Relay Name

– All Triggered Trend related parameters (see page 64)

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90 DeviceNet Information

– All SU/CD Trend related parameters (see page 66)

– Custom Assembly structure (see page 68)

• The ADR and trigger group functions cannot be used together. A

module can have only one primary master so a module cannot be both configured for ADR and included in a trigger group. The ADR scanner must be the primary master for the modules configured for ADR. The XM-440 Master Relay module must be the primary master for modules included in a trigger group.

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Appendix

TIP

DeviceNet Objects

Appendix C provides information on the DeviceNet objects supported by the Absolute Shaft module.

For information about See page

Identity Object (Class ID 01H) 92 DeviceNet Object (Class ID 03H) 94 Assembly Object (Class ID 04H) 95 Connection Object (Class ID 05H) 99 Discrete Input Point Object (Class ID 08H) 101 Parameter Object (Class ID 0FH) 102 Acknowledge Handler Object (Class ID 2BH) 107 Alarm Object (Class ID 31DH) 108 Channel Object (Class ID 31FH) 111 Device Mode Object (Class ID 320H) 115 Overall Measurement Object (Class ID 322H) 116 Relay Object (Class ID 323H) 119 Spectrum Waveform Measurement Object (Class ID 324H) 121 Speed Measurement Object (Class ID 325H) 125 Tachometer Channel Object (Class ID 326H) 127 Transducer Object (Class ID 328H) 128 Vector Measurement Object (Class ID 329H) 130 4-20 mA Output Object (Class ID 32AH) 132

Refer to the DeviceNet specification for more information about DeviceNet objects. Information about the DeviceNet specification is available on the ODVA web site (http://www.odva.org).

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92 DeviceNet Objects

Identity Object (Class ID 01

)

The Identity Object provides identification and general information about the device.

Class Attributes

The Identity Object provides no class attributes.

Instance Attributes

Table C.1 Identity Object Instance Attributes

Access

Attr ID

1 Get Vendor ID UINT 668 = Entek 2 Get Device Type UINT 109 (Specialty I/O) 3 Get Product Code UINT 38 (0x26) 4 Get Revision:

5 Get Status WORD

Rule Name Data Type Default Value

STRUCT OF Major Minor

USINT

Value varies with each firmware revision. Value varies with each firmware revision.

6 Get Serial Number UDINT 7 Get Product Name SHORT_

STRING

Status

The Status is a 16 bit value. The following bits are implemented.

Table C.2 Identity Object Status

Bit Name Description

0 Owned TRUE indicates that the module has an owner. More

specifically, the Predefined Master/Slave Connection Set

has been allocated to a master. 1 Reserved, set to 0 2 Configured This bit is set whenever a saved configuration is

successfully loaded from non-volatile memory. This bit is

cleared whenever the default configuration is restored or

loaded. 3 Reserved, set to 0

"XM-121 Absolute Shaft Module"

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Rockwell Automation 1440-VLF02-01RA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important User Information

Table of Contents

Introduction

Introducing the Absolute Shaft Module

Absolute Shaft Module Components

Using this Manual

Organization

Document Conventions

Installing the Absolute Shaft Module

XM Installation Requirements

Wiring Requirements

Power Requirements

Grounding Requirements

Mounting the Terminal Base Unit

DIN Rail Mounting

Interconnecting Terminal Base Units

Panel/Wall Mounting

Connecting Wiring for Your Module

Terminal Block Assignments

Connecting the Power Supply

Connecting the Relays

Connecting the Tachometer Signal

Connecting the Buffered Outputs

Connecting the Transducers

Connecting the Remote Relay Reset Signal

Connecting the Setpoint Multiplication Switch

Connecting the 4-20 mA Outputs

Serial Port Connection

DeviceNet Connection

Mounting the Module

Module Indicators

Basic Operations

Powering Up the Module

Manually Resetting Relays

Installing the XM-121 Absolute Shaft Firmware

Configuration Parameters

Channel Parameters

Signal Processing Parameters

Measurement Parameters

Overall Measurement Parameters

Waveform Measurement Parameters

Vector Measurement Parameters

Speed Measurement Parameter

Tachometer Parameters

Tachometer Transducer Parameters

Tachometer Signal Processing Parameters

Alarm Parameters

Relay Parameters

4-20 mA Output Parameters

Triggered Trend Parameters

SU/CD Trend Parameters

I/O Data Parameters

Data Parameters

Monitor Data Parameters

Alarm and Relay Status Parameters

Device Mode Parameters

Specifications

DeviceNet Information

Electronic Data Sheets

Changing Operation Modes

Transition to Program Mode

Transition to Run Mode

XM Services

Invalid Configuration Errors

Absolute Shaft I/O Message Formats

Poll Message Format

COS Message Format

Bit-Strobe Message Format

ADR for XM Modules

DeviceNet Objects

Class Attributes

Instance Attributes

Status