Rosemount 848T Operating Manual

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Reference Manual

00809-0100-4697, Rev GA

November 2014

Rosemount 848T High Density Temperature Transmitter with FOUNDATION™ fieldbus

Device Revision 8

Reference Manual

00809-0100-4697, Rev GA

Rosemount 848T High Density Temperature Transmitter with F

Title Page

November 2014

OUNDATION

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure to thoroughly understand the contents before installing, using, or maintaining this product.

The United States has two toll-free assistance numbers and one international number Customer Central 1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST) National Response Center 1-800-654-7768 (24 hours a day) Equipment service needs International 1-(952) 906-8888

™

fieldbus

The products described in this document are NOT designed for nuclear-qualified applications.

Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings.

For information on Rosemount nuclear-qualified products, contact an Emerson Process Management Sales Representative.]

Title Page

November 2014

Reference Manual

00809-0100-4697, Rev GA

Reference Manual

00809-0100-4697, Rev GA

1Section 1: Introduction

2Section 2: Installation

Contents

November 2014

1.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.2 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.2.1 Mounting to a DIN rail without an enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2.2 Mounting to a panel with a junction box . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2.2.3 Mounting to a 2-in. pipe stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3 Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3.1 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.3.3 Surges/transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.4 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.5 Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2.6 Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2.7 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2.7.1 Using cable glands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2.7.2 Using conduit entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

3Section 3: Configuration

3.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

3.1.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

3.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.2.1 Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.2.2 Transmitter configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.2.3 Custom configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.2.4 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.2.5 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

3.2.6 Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Contents

3.2.7 Configure the differential sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

3.2.8 Configure measurement validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

iii

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3.3 Common configurations for high density applications. . . . . . . . . . . . . . . . . . . . . .22

3.3.1 Interfacing analog transmitters to Foundation fieldbus . . . . . . . . . . . . . . .25

3.4 Block configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.4.1 Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.4.2 Field Diagnostics & PlantWeb Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

3.4.3 PlantWeb alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

3.4.4 Recommended actions for PlantWeb alerts . . . . . . . . . . . . . . . . . . . . . . . . .35

3.4.5 Field Diagnostics Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

3.4.6 Recommended actions for field diagnostics alerts. . . . . . . . . . . . . . . . . . . .40

3.4.7 Transducer blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

3.4.8 Transducer block sub-parameter tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4Section 4: Operation and Maintenance

4.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.1.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.2 Foundation™ fieldbus information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.2.1 Commissioning (addressing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

4.3 Hardware maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

4.3.1 Sensor check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

4.3.2 Communication/power check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

4.3.3 Resetting the configuration (RESTART) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

4.4 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

4.4.1 Foundation fieldbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

4.4.2 Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

4.4.3 Transducer block troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

AAppendix A: Reference Data

A.1 Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.1 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.2 Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.3 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.4 Ambient temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.5 Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.7 Transient protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.1.8 Update time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.1.9 Humidity limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.1.10Turn-on time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

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Contents

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A.1.11Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.1.12Backup Link Active Scheduler (LAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2.1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2.2 Entries for optional junction box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2.3 Environmental ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A.3 Function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A.3.1 Analog input (AI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A.3.2 Input selector (ISEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A.3.3 Multiple analog input block (MAI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A.4 Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

A.4.1 Stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

A.4.2 Self calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

A.4.3 Vibration effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

A.4.4 Electromagnetic compatibility compliance testing . . . . . . . . . . . . . . . . . . .60

A.4.5 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

A.4.6 Differential configuration notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

A.4.7 Accuracy for differential configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

A.4.8 Analog sensors 4–20mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

A.4.9 Ambient temperature effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

A.4.10Ambient temperature effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

A.4.11Ambient temperature notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

A.5 Dimensional drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

A.5.1 Mounting options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

A.6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

BAppendix B: Product Certificates

B.1 North American Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

B.1.1 European Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

B.2 Intrinsically Safe and Non-Incendive installations . . . . . . . . . . . . . . . . . . . . . . . . . .78

B.3 Installation drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Contents

CAppendix C: Foundation™ fieldbus Technology

C.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

C.2 Function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

C.3 Device descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

C.4 Block operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

C.4.1 Instrument- specific function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

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C.4.2 Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

C.5 Network communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

C.5.1 LAS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

C.5.2 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

C.5.3 Scheduled transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

C.5.4 Unscheduled transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

C.5.5 Function block scheduling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

DAppendix D: Function Blocks

D.1 Analog Input (AI) function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

D.1.1 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

D.1.2 AI block troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

D.2 Multiple analog input (MAI) function block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

D.2.1 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

D.2.2 MAI block troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

D.3 Input selector function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

D.3.1 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

D.3.2 ISEL block troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Contents

Reference Manual

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Section 1 Introduction

1.1 Safety messages

Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is

indicated by a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

1.1.1 Warnings

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.

Process leaks could result in death or serious injury.

 Do not remove the thermowell while in operation. Removing while in operation may

cause process fluid leaks.

 Install and tighten thermowells and sensors before applying pressure, or process

leakage may result.

Electrical shock could cause death or serious injury.

 If the sensor is installed in a high voltage environment and a fault condition or

installation error occurs, high voltage may be present on transmitter leads and terminals.

 Use extreme caution when making contact with the leads and terminals.

Section 1: Introduction

November 2014

1.2 Overview

1.2.1 Transmitter

The Rosemount 848T is optimal for process temperature measurement because of its ability to simultaneously measure eight separate and independent temperature points with one transmitter. Multiple temperature sensor types may be connected to each transmitter. In addition, the 848T can accept 4-20 mA inputs. The enhanced measurement capability of the

848T allows it to communicate these variables to any F configuration tool.

1.2.2 Manual

This manual is designed to assist in the installation, operation, and maintenance of the Rosemount 848T Temperature Transmitter.

Introduction

OUNDATION

™

fieldbus host or

Section 1: Introduction

November 2014

Section 1: Introduction

 Overview  Considerations  Return of Materials

Section 2: Installation

 Mounting  Installation  Wiring  Power Supply  Commissioning

Section 3: Configuration

 FOUNDATION fieldbus Technology  Configuration  Function Block Configuration

Reference Manual

00809-0100-4697, Rev GA

Section 4: Operation and Maintenance

 Hardware Maintenance  Tro u bl esh o oti ng

Appendix A: Reference Data

 Specifications  Dimensional Drawings  Ordering Information

Appendix B: Product Certificates

 Hazardous Locations Certificates  Intrinsically Safe and Non-Incendive Installations  Installation Drawings

Appendix C: Foundation™ fieldbus Technology

 Device Descriptions  Block Operation

Appendix D: Function Blocks

 Analog Input (AI) Function Block  Multiple Analog Input (MAI) Function Block  Input Selector Function Block

Introduction

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1.3 Service support

To expedite the return process in North America, call the Emerson Process Management National Response Center toll-free at 800-654-7768. This center, available 24 hours a day, will assist with any needed information or materials.

The center will ask for the following information:

 Product model  Serial numbers  The last process material to which the product was exposed

The center will provide the following:

 A Return Material Authorization (RMA) number  Instructions and procedures that are necessary to return goods that were exposed to

hazardous substances

For other locations, contact an Emerson Process Management sales representative.

Section 1: Introduction

November 2014

Note

If a hazardous substance is identified, a Material Safety Data Sheet (MSDS), required by law to be available to people exposed to specific hazardous substances, must be included with the returned materials.

Introduction

Section 1: Introduction

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Introduction

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Section 2 Installation

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14

Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16

2.1 Safety messages

Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is

indicated by a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Section 2: Installation

November 2014

2.1.1 Warnings

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.

Process leaks could result in death or serious injury.

 Do not remove the thermowell while in operation. Removing while in operation may

cause process fluid leaks.

 Install and tighten thermowells and sensors before applying pressure, or process

leakage may result.

Electrical shock could cause death or serious injury.

 If the sensor is installed in a high voltage environment and a fault condition or

installation error occurs, high voltage may be present on transmitter leads and terminals.

 Use extreme caution when making contact with the leads and terminals.

2.2 Mounting

The 848T is always mounted remote from the sensor assembly. There are three mounting configurations.

 To a DIN rail without an enclosure  To a panel with an enclosure  To a 2-in pipe stand with an enclosure using a pipe mounting kit

5Installation

Section 2: Installation

November 2014

2.2.1 Mounting to a DIN rail without an enclosure

To mount the 848T to a DIN rail without an enclosure, follow these steps:

1. Pull up the DIN rail mounting clip located on the top back side of the transmitter.

2. Hinge the DIN rail into the slots on the bottom of the transmitter.

3. Tilt the 848T and place onto the DIN rail. Release the mounting clip. The transmitter should be securely fastened to the DIN rail.

Figure 2-1. Mounting the 848T to a DIN Rail

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00809-0100-4697, Rev GA

A. DIN Rail Mounting Clip B. 848T without installed enclosure C. DIN Rail

2.2.2 Mounting to a panel with a junction box

When inside of a plastic or aluminum junction box, the 848T mounts to a panel using four 1/4-20 x 1.25-in. screws.

When inside of a stainless steel junction box, the 848T mounts to a panel using two

/2-in. screws.

Figure 2-2. Mounting the 848T Junction Box to a Panel

Aluminum/plastic Stainless steel

/4-20 x

A. 848T with aluminum or plastic box B. Cover screws (4) C. Mounting screws (4 for aluminum/plastic mounting, 2 for stainless steel mounting) D. Panel E. 848T with a stainless steel box

Installation

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2.2.3 Mounting to a 2-in. pipe stand

Use the optional mounting bracket (option code B6) to mount the 848T to a 2-in. pipe stand when using a junction box.

Figure 2-3. Mounting the 848T to a 2-in. Pipe Stand Using a Junction Box

Section 2: Installation

November 2014

Aluminum/plastic junction box

(styles JA and JP)

Front view Side view Front view Side view

Dimensions are in inches (millimeters). A. 5.1 (130) B. 10.2 (260) C. 6.6 (167) fully assembled D. 4.7 (119) E. 7.5 (190) fully assembled

Aluminum/plastic junction box

mounted on a vertical pipe

Stainless steel junction box

(style JS)

Stainless steel junction box

mounted on a vertical pipe

Installation

Section 2: Installation

November 2014

2.3 Wiring

If the sensor is installed in a high-voltage environment and a fault condition or installation error occurs, the sensor leads and transmitter terminals could carry lethal voltages. Use extreme caution when making contact with the leads and terminals.

Note

Do not apply high voltage (e.g. AC line voltage) to the transmitter terminals. Abnormally high voltage can damage the unit (bus terminals are rated to 42.4 VDC).

Figure 2-4. 848T Transmitter Field Wiring

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A. Integrated Power Conditioner and Filter B. 6234 ft (1900 m) max (depending on cable characteristics) C. Terminators (Trunk) D. Power supply E. F

OUNDATION

F. S pu r G. Signal wiring H. Devices 1-16 (Intrinsically safe installations may allow fewer devices per I.S. barrier)

™

fieldbus host or configuration tool

2.3.1 Connections

The 848T transmitter is compatible with 2 or 3-wire RTD, thermocouple, ohm, and millivolt

sensor types. Figure 2-5 shows the correct input connections to the sensor terminals on the transmitter. The 848T can also accept inputs from analog devices using the optional analog input connector. Figure 2-6 shows the correct input connections to the analog input connector when installed on the transmitter. Tighten the terminal screws to ensure proper connection.

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12 3

123 123

123

00809-0100-4697, Rev GA

Figure 2-5. Sensor Wiring Diagram

A. 2-wire RTD and ohms B. 3-wire RTD and ohms (Emerson provides 4-wire sensors for all single-element RTDs; use these RTDs in 3-wire

C. Thermocouples/ohms and Millivolts D. 2-wire RTD with compensation loop (transmitter must be configured for a 3-wire RTD in order to recognize an RTD

RTD or ohm inputs

Various RTD configurations, including 2-wire and 3-wire are used in industrial applications. If the transmitter is mounted remotely from a 3-wire RTD, it will operate within specifications, without recalibration, for lead wire resistances of up to 60 ohms per lead (equivalent to 6,000 feet of 20 AWG wire). If using a 2-wire RTD, both RTD leads are in series with the sensor element, so errors can occur if the lead lengths exceed one foot of 20 AWG wire. Compensation for this error is provided when using 3-wire RTDs.

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November 2014

configurations by clipping the fourth lead or leaving it disconnected and insulated with electrical tape.)

with a compensation loop)

Thermocouple or millivolt inputs

Use appropriate thermocouple extension wire to connect the thermocouple to the transmitter. Make connections for millivolt inputs using copper wire. Use shielding for long runs of wire.

Analog inputs

The analog connector converts the 4–20 mA signal to a 20–100 mV signal that can be read by the 848T and transmitted using F

Use the following steps when installing the 848T with the analog connector:

1. The 848T, when ordered with option code S002, comes with four analog connectors. Replace the standard connector with the analog connector on the desired channels.

2. Wire one or two analog transmitters to the analog connector according to Figure 2-6. There is space available on the analog connector label for identification of the analog inputs.

Note

Power supply should be rated to support the connected transmitter(s).

3. If the analog transmitters can communicate using HART connectors are supplied with the ability to switch in a 250 ohm resistor for HART communication (see Figure 2-7).

OUNDATION fieldbus.

protocol, the analog

Installation

One switch is supplied for each input (top switch for “A” inputs and bottom switch for “B” inputs). Setting the switch in the “ON” position (to the right) bypasses the 250 ohm resistor. Terminals are provided for each analog input to connect a field communicator for local configuration.

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November 2014

Figure 2-6. 848T Analog Input Wiring Diagram

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A. Analog input connectors B. Analog transmitters C. Power supply

Figure 2-7. 848T Analog Connector

A. HART Channel A B. 250 ohm resistor in the loop when switched to the left C. HART Channel B D. Space available for identification of inputs

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TE ENABLE

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2.3.2 Power supply

Connections

The transmitter requires between 9 and 32 VDC to operate and provide complete functionality. The DC power supply should provide power with less than 2% ripple. A fieldbus segment requires a power conditioner to isolate the power supply filter and decouple the segment from other segments attached to the same power supply.

All power to the transmitter is supplied over the signal wiring. Signal wiring should be shielded, twisted pair for best results in electrically noisy environments. Do not use unshielded signal wiring in open trays with power wiring or near heavy electrical equipment.

Use ordinary copper wire of sufficient size to ensure the voltage across the transmitter power terminals does not go below 9 VDC. The power terminals are polarity insensitive. To power the transmitter:

1. Connect the power leads to the terminals marked “Bus,” as shown in Figure 2-8.

2. Tighten the terminal screws to ensure adequate contact. No additional power wiring is necessary.

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November 2014

Figure 2-8. Transmitter Label

A. Ground (required with T1 option) B. Connect power leads here

2.3.3 Surges/transients

The transmitter will withstand electrical transients encountered through static discharges or induced switching transients. However, a transient protection option (option code T1) is available to protect the 848T against high-energy transients. The device must be properly grounded using the ground terminal (see Figure 2-8).

2.4 Grounding

The 848T transmitter provides input/output isolation up to 620 V rms.

Note

Neither conductor of the fieldbus segment can be grounded. Grounding out one of the signal wires will shut down the entire fieldbus segment.

Installation

Section 2: Installation

November 2014

Shielded wire

Each process installation has different requirements for grounding. Use the grounding options recommended by the facility for the specific sensor type or begin with grounding option 1 (most common).

Ungrounded thermocouple, mV, and RTD/ohm inputs

Option 1:

1. Connect signal wiring shield to the sensor wiring shield(s).

2. Ensure shields are tied together and electrically isolated from transmitter enclosure.

3. Only ground shield at the power supply end.

4. Ensure sensor shield(s) is electrically isolated from the surrounding grounded fixtures.

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A. Sensor wires B. 848T C. Power supply D. Shield ground point

Option 2:

1. Connect sensor wiring shield(s) to the transmitter enclosure (only if enclosure is grounded).

2. Ensure sensor shield(s) is electrically isolated from surrounding fixtures that may be grounded.

3. Ground signal wiring shield at the power supply end.

A. Sensor wires B. 848T C. Power supply D. Shield ground points

Installation

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Grounded thermocouple inputs

1. Ground sensor wiring shield(s) at the sensor.

2. Ensure that the sensor wiring and signal wiring shields are electrically isolated from the

3. Do not connect the signal wiring shield to the sensor wiring shield(s).

4. Ground signal wiring shield at the power supply end.

A. Sensor wires B. 848T C. Power supply D. Shield ground points

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November 2014

transmitter enclosure.

Analog device inputs

1. Ground analog signal wire at the power supply of the analog devices.

2. Ensure the analog signal wire and the fieldbus signal wire shields are electrically isolated from the transmitter enclosure.

3. Do not connect the analog signal wire shield to the fieldbus signal wire shield.

4. Ground fieldbus signal wire shield at the power supply end.

A. 4-20 mA loop B. F

OUNDATION fieldbus bus

C. Analog device power supply D. Analog device E. 848T F. Power supply G. Shield ground points

Transmitter enclosure (optional)

Ground the transmitter in accordance with local electrical requirements.

Installation

Section 2: Installation

NOT USED SECURITY SIMULATE ENABLE

November 2014

2.5 Switches

Figure 2-9. Switch Location on the Rosemount 848T

Security

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After configuring the transmitter, the data can be protected from unwarranted changes. Each 848T is equipped with a security switch that can be positioned “ON” to prevent the accidental or deliberate change of configuration data. This switch is located on the front side of the electronics module and is labeled SECURITY.

See Figure 2-9 for switch location on the transmitter label.

Simulate enable

The switch labeled SIMULATE ENABLE is used in conjunction with the Analog Input (AI) and Multiple Analog Input (MAI) function blocks. This switch is used to simulate temperature measurement.

Not used

The switch is not functional.

2.6 Tagging

Commissioning tag

The 848T has been supplied with a removable commissioning tag that contains both the Device ID (the unique code that identifies a particular device in the absence of a device tag) and a space to record the device tag [the operational identification for the device as defined by the Piping and Instrumentation Diagram (P&ID)].

When commissioning more than one device on a fieldbus segment, it can be difficult to identify which device is at a particular location. The removable tag, provided with the transmitter, can aid in this process by linking the Device ID to its physical location. The installer should note the physical location of the transmitter on both the upper and lower location of the commissioning tag. The bottom portion should be torn off for each device on the segment and used for commissioning the segment in the control system.

Installation

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Figure 2-10. Commissioning Tag

A. Device ID B. Device Tag to denote physical location

Transmitter tag

Section 2: Installation

November 2014

Hardware

 Tagged in accordance with customer requirements  Permanently attached to the transmitter

Software

 The transmitter can store up to 32 characters.  If no characters are specified, the first 30 characters of the hardware tag will be used.

Sensor tag

Hardware

 A plastic tag is provided to record identification of eight sensors.  This information can be printed at the factory upon request.  In the field, the tag can be removed, printed onto, and reattached to the transmitter.

Software

 If sensor tagging is requested, the Transducer Block SERIAL_NUMBER parameters will

be set at the factory.

 The SERIAL_NUMBER parameters can be updated in the field.

Installation

Section 2: Installation

November 2014

2.7 Installation

2.7.1 Using cable glands

Use the following steps to install the 848T with cable glands:

1. Remove the junction box cover by unscrewing the four cover screws.

2. Run the sensor and power/signal wires through the appropriate cable glands using the pre-installed cable glands (see Figure 2-11).

3. Install the sensor wires into the correct screw terminals (follow the label on the electronics module).

4. Install the power/signal wires onto the correct screw terminals. Power is polarity insensitive, allowing the user to connect positive (+) or negative (–) to either fieldbus wiring terminal labeled “Bus.”

5. Replace the enclosure cover and securely tighten all cover screws.

Figure 2-11. Installing the 848T with Cable Glands

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A. Enclosure cover screw (4) B. Cable gland C. Sensor 1 D. Sensor 3 E. Sensor 5 F. S en sor 7 G. Power/signal H. Sensor 2 I. Sensor 4 J. Sensor 6 K. Sensor 8

Installation

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2.7.2 Using conduit entries

Use the following steps to install the 848T with conduit entries.

1. Remove the junction box cover by unscrewing the four cover screws.

2. Remove the five conduit plugs and install five conduit fittings (supplied by the installer).

3. Run pairs of sensor wires through each conduit fitting.

4. Install the sensor wires into the correct screw terminals (follow the label on the electronics module).

5. Install the power/signal wires into the correct screw terminals. Power is polarity insensitive, allowing the user to connect positive (+) or negative (–) to either fieldbus wiring terminal labeled “Bus.”

6. Replace the junction box cover and securely tighten all cover screws.

Figure 2-12. Installing the 848T with Conduit Entries

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November 2014

Installation

A. Enclosure cover screw B. Sensors 1 and 2 conduit C. Sensors 3 and 4 conduit D. Sensors 5 and 6 conduit E. Sensors 7 and 8 conduit F. P ower/s ig nal

Section 2: Installation

November 2014

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00809-0100-4697, Rev GA

Installation

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Section 3 Configuration

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20

Common configurations for high density applications . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22

Block configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 25

3.1 Safety messages

Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is

indicated by a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

3.1.1 Warnings

Section 3: Configuration

November 2014

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.

Process leaks could result in death or serious injury.

 Do not remove the thermowell while in operation. Removing while in operation may

cause process fluid leaks.

 Install and tighten thermowells and sensors before applying pressure, or process

leakage may result.

Electrical shock could cause death or serious injury.

 If the sensor is installed in a high voltage environment and a fault condition or

installation error occurs, high voltage may be present on transmitter leads and terminals.

 Use extreme caution when making contact with the leads and terminals.

19Configuration

Section 3: Configuration

November 2014

3.2 Configuration

3.2.1 Standard

Each FOUNDATION™ fieldbus configuration tool or host system has a different way of displaying and performing configurations. Some will use Device Descriptions (DDs) and DD Methods to make configuration and displaying of data consistent across host platforms.

Unless otherwise specified, the 848T will be shipped with the following configuration (default):

Table 3-1. Standard Configuration Settings

Sensor Type

Damping

Measurement Units

Output

Line Voltage Filter

(1)

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Type J Thermocouple

5 seconds

°C

Linear with Temperature

60 Hz

Temperature Specific Blocks

FOUNDATION fieldbus Function Blocks

(1) For all eight sensors

Refer to that systems documentation to perform configuration changes using a F fieldbus host or configuration tool.

Note

To make configuration changes, ensure that the block is Out of Service (OOS) by setting the MODE_BLK.TARGET to OOS, or set the SENSOR_MODE to Configuration.

3.2.2 Transmitter configuration

The transmitter is available with the standard configuration setting. The configuration settings and block configuration may be changed in the field with the Emerson Process Management

Systems DeltaV

™

, with AMS®inside, or other FOUNDATION fieldbus host or configuration tool.

3.2.3 Custom configuration

Custom configurations are to be specified when ordering.

3.2.4 Methods

For FOUNDATION fieldbus hosts or configuration tools that support device description (DD) methods, there are two configuration methods available in the transducer block. These methods are included with the DD software.

• Transducer Block (1)

• Analog Input (8)

•Multiple Analog Input (2)

• Input Selector (4)

OUNDATION

 Sensor Configuration  Sensor Input Trim (user input trim)

See the host system documentation for information on running DD methods from the host system. If the F

OUNDATION fieldbus host or configuration tool does not support DD methods,

refer to “Block configuration” on page 25 for information on how to modify sensor configuration parameters.

Configuration

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3.2.5 Alarms

Use the following steps to configure the alarms, which are located in the Resource Function Block:

1. Set the resource block to OOS.

2. Set WRITE_PRI to the appropriate alarm level (WRITE_PRI has a selectable range of

priorities from 0 to 15, see “Alarm Priority Levels” on page 31. Set the other block alarm parameters at this time.

3. Set CONFIRM_TIME to the time, in

confirmation of receiving a report before trying again (the device does not retry if CONFIRM_TIME is 0).

4. Set LIM_NOTIFY to a value between zero and MAX_NOTIFY. LIM_NOTIFY is the

maximum number of alert reports allowed before the operator needs to acknowledge an alarm condition.

5. Enable the reports bit in FEATURES_SEL. (When Multi-bit alerts is enabled, every active

alarm is visible for any of the eight sensors, generated by a PlantWeb Diagnostics alert. This is different than only viewing the highest priority alarm.)

6. Set the resource block to AUTO.

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November 2014

/32 of a millisecond, that the device will wait for

and Field

For modifying alarms on individual function blocks (AI or ISEL blocks), refer to Appendix D:

Function Blocks.

3.2.6 Damping

Use the following steps to configure the damping, which is located in the transducer function block:

1. Set Sensor Mode to Out of Service.

2. Change DAMPING to the desired filter rate (0.0 to 32.0 seconds).

3. Set Sensor Mode to In Service.

3.2.7 Configure the differential sensors

Use the following steps to configure the differential sensors:

1. Set Dual Sensor Mode to Out of Service.

2. Set Input A and Input B to the sensor values that are to be used in the differential

equation diff = A–B. (Note: Unit types must be the same.)

3. Set the DUAL_SENSOR_CALC to either Not Used, Absolute, or INPUT A minus INPUT B.

4. Set Dual Sensor Mode to In Service.

Configuration

Section 3: Configuration

November 2014

3.2.8 Configure measurement validation

Use the following steps to configure measurement validation:

1. Set mode to Disabled for specific sensor.

2. Select sample rate. 1-10 sec/sample is available. 1 second/sample is preferred for sensor degradation. The higher the number of seconds between samples, the more emphasis put on process variation.

3. Select Deviation Limit from 0 to 10 units. If deviation limit is exceeded, a status event will be triggered.

4. Select Increasing Limit. Sets the limit for increasing rate of change. If limit is exceeded, a status event will be triggered.

5. Select Decreasing Limit. Sets the limit for decreasing rate of change. If li mit is exceeded, a status event will be triggered.

Note

The decreasing limit selected is required to be a negative value.

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6. Set the Deadband from 0 to 90%. This threshold is used to clear the PV status.

7. Set Status Priority. This determines what happens when the specific limit has been exceeded. No Alert - Ignores limit settings. Advisory - Sets Advisory Plant Web Alert, but does not do anything with PV status. Warning - Sets a Maintenance Plant Web Alert and sets PV status to uncertain. Failure - Sets A Failure Plant Web Alert and sets PV status to Bad.

8. Set mode to Enabled for specific sensor.

3.3 Common configurations for high density applications

For the application to work properly, configure the links between the function blocks and schedule the order of their execution. The Graphical User Interface (GUI) provided by the F

OUNDATION fieldbus host or configuration tool will allow easy configuration.

The measurement strategies shown in this section represent some of the common types of configurations available in the 848T. Although the appearance of the GUI screens will vary from host to host, the configuration logic is the same.

Note

Ensure the host system or configuration tool is properly configured before downloading the transmitter configuration. If configured improperly, the F configuration tool could overwrite the default transmitter configuration.

OUNDATION fieldbus host or

Configuration

Reference Manual

MAI Function Block

Out_1

Out_2

Out_3

Out_4

Out_5

Out_6

Out_7

Out_8

MAI Function Block

Out_1

Out_2 Out_3

Out_4

Out_5

Out_6

Out_7

Out_8

ISEL

Function

Block

IN_1

IN_2 IN_3

IN_4

IN_5

IN_6

IN_7

IN_8

Out

Out_D

00809-0100-4697, Rev GA

Typical profiling application

Example: Distillation column temperature profile where all channels have the same sensor units (°C, °F, etc.).

1. Place the Multiple Analog Input (MAI) function block in OOS mode (set

2. Set CHANNEL= “channels 1 to 8.” Although the CHANNEL_X parameters remain

3. Set L_TYPE to direct or indirect.

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November 2014

MODE_BLK.TARGET to OOS).

writable, CHANNEL_X can only be set = X when CHANNEL=1.

4. Set XD_SCALE (transducer measurement scaling) to the appropriate upper and lower

range values, the appropriate sensor units, and display decimal point.

5. Set OUT_SCALE (MAI output scaling) to the appropriate upper and lower range values,

the appropriate sensor units, and display decimal point.

6. Place the MAI Function Block in auto mode.

7. Verify that the function blocks are scheduled.

Monitoring application with a single selection

Example: Average exhaust temperature of gas and turbine where there is a single alarm level for all inputs.

1. Link the MAI outputs to the ISEL inputs.

2. Place the Multiple Analog Input (MAI) function block in OOS mode (set

MODE_BLK.TARGET to OOS).

Configuration

3. Set CHANNEL= “channels 1 to 8.” Although the CHANNEL_X parameters remain

writable, CHANNEL_X can only be set = X when CHANNEL=1.

4. Set L_TYPE to direct or indirect.

5. Set XD_SCALE (transducer measurement scaling) to the appropriate upper and lower

range values, the appropriate sensor units, and display decimal point.

Section 3: Configuration

AI Function Block 1

Out

AI Function Block 8

Out

Out_D

November 2014

6. Set OUT_SCALE (MAI output scaling) to the appropriate upper and lower range values,

7. Place the MAI function block in auto mode.

8. Place the Input Selector (ISEL) function block in OOS mode by setting

9. Set OUT_RANGE to match the OUT_SCALE in the MAI block.

10. Set SELECT_TYPE to the desired function (Maximum Value, Minimum Value, First Good

11. Set the alarm limits and parameters if necessary.

12. Place the ISEL function block in auto mode.

13. Verify that the function blocks are scheduled.

Measuring temperature points individually

Example: Miscellaneous monitoring of temperature in a “close proximity” where each channel can have different sensor inputs with different units and there are independent alarm levels for each input.

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the appropriate sensor units, and display decimal point.

MODE_BLK.TARGET to OOS.

Value, Midpoint Value, or Average Value).

1. Place the first Analog Input (AI) function block in OOS mode (set MODE_BLK.TARGET to

OOS).

2. Set CHANNEL to the appropriate channel value. Refer to “Alarm Priority Levels” on

page 31 for a listing of channel definitions.

3. Set L_TYPE to direct.

4. Set XD_SCALE (transducer measurement scaling) to the appropriate upper and lower

range values, the appropriate sensor units, and display decimal point.

5. Set OUT_SCALE (AI output scaling) to the appropriate upper and lower range values,

the appropriate sensor units, and display decimal point.

6. Set the alarm limits and parameters if necessary.

7. Place the AI function block in auto mode.

8. Repeat steps 1 through 7 for each AI function block.

9. Verify that the function blocks are scheduled.

Configuration

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Section 3: Configuration

November 2014

3.3.1 Interfacing analog transmitters to FOUNDATION fieldbus

Transducer block configuration

Use the sensor configuration method to set the sensor type to mV – 2-wire for the applicable transducer block or follow these steps.

1. Set the MODE_BLK.TARGET to OOS mode, or set the SENSOR_MODE to configuration.

2. Set the SENSOR to mV.

3. Set the MODE_BLK.TARGET to AUTO, or set the SENSOR_MODE to operation.

Multiple analog input or analog input block configuration

Follow these steps to configure the applicable block.

1. Set the MODE_BLK.TARGET to OOS mode, or set the SENSOR_MODE to configuration.

2. Set CHANNEL to the transducer block configured for the analog input.

3. Set XD_SCALE.EU_0 to 20

Set XD_SCALE.EU_100 to 100 Set XD_SCALE.ENGUNITS to mV

4. SET OUT_SCALE to match the desired scale and units for the connected analog

transmitter. Flow Example: 0 – 200 gpm

OUT_SCALE.EU_0 = 0 OUT_SCALE.EU_100 = 200 OUT_SCALE.ENGUNITS = gpm

5. Set L_TYPE to INDIRECT.

6. Set the MODE_BLK.TARGET to AUTO, or set the SENSOR_MODE to operation.

3.4 Block configuration

3.4.1 Resource block

The resource block defines the physical resources of the device including type of measurement, memory, etc. The resource block also defines functionality, such as shed times, that is common across multiple blocks. The block has no linkable inputs or outputs and it performs memory-level diagnostics.

Table 3-2. Resource Block Parameters

Number Parameter Description

01 ST_REV The revision level of the static data associated with the function block. 02 TA G_D ES C The user description of the intended application of the block. 03 STRATEGY The strategy field can be used to identify grouping of blocks. 04 ALERT_KEY The identification number of the plant unit. 05 MODE_BLK The actual, target, permitted, and normal modes of the block. For further

06 BLOCK_ERR This parameter reflects the error status associated with the hardware or software

description, see the Mode parameter formal model in FF-890.

components associated with a block. Multiple errors may be shown. For a list of enumeration values, see FF-890, Block_Err formal model.

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Table 3-2. Resource Block Parameters

Number Parameter Description

07 RS_STATE State of the function block application state machine. For a list of enumeration

08 TEST_RW Read/write test parameter - used only for conformance testing. 09 DD_RESOURCE String identifying the tag of the resource which contains the Device Description for

10 MANUFAC_ID Manufacturer identification number - used by an interface device to locate the DD

11 DEV_TYPE Manufacturer's model number associated with the resource - used by interface

12 DEV_REV Manufacturer revision number associated with the resource - used by an interface

13 DD_REV Revision of the DD associated with the resource - used by the interface device to

14 GRANT_DENY Options for controlling access of host computer and local control panels to

15 HARD_TYPES The types of hardware available as channel numbers. The supported hardware

16 RESTART Allows a manual restart to be initiated.

17 FEATURES Used to show supported resource block options. The supported features are:

18 FEATURE_SEL Used to select resource block options. 19 CYCLE_TYPE Identifies the block execution methods available for this resource. The supported

20 CYCLE_SEL Used to select the block execution method for this resource. 21 MIN_CYCLE_T Time duration of the shortest cycle interval of which the resource is capable. 22 MEMORY_SIZE Available configuration memory in the empty resource. To be checked before

23 NV_CYCLE_T Minimum time interval specified by the manufacturer for writing copies of NV

24 FREE_SPACE Percent of memory available for further configuration. Zero in preconfigured

25 FREE_TIME Percent of the block processing time that is free to process additional blocks. 26 SHED_RCAS Time duration at which to give up on computer writes to function block RCas

27 SHED_ROUT Time duration at which to give up on computer writes to function block ROut

28 FAULT _STAT E Condition set by loss of communication to an output block, fault promoted to an

29 SET_FSTATE Allows the FAIL_SAFE condition to be manually initiated by selecting Set. 30 CLR_FSTATE Writing a Clear to this parameter will clear the device FAIL_SAFE if the field

31 MAX_NOTIFY Maximum number of unconfirmed notify messages possible.

values, see FF-890.

the resource.

file for the resource.

devices to locate the DD file for the resource.

device to locate the DD file for the resource.

locate the DD file for the resource.

operating, tuning and alarm parameters of the block.

type is: SCALAR_INPUT

1) Run: This is passive state of this parameter.

2) Restart resource: To clear up the problems like garbage collection.

3) Restart with defaults: reset all configurable function block application objects to their initial value i.e. their value before any configuration was done by the user. This will also remove appended serial numbers of function block tags

4) Restart processor: provides a way to hit the reset button on the processor associated with the resource.

5) Restart to append serial number: Appends serial number to function block tags.

11) Restart default blocks: defaults manufacturer pre-instantiated blocks.

SOFT_WRITE_LOCK_SUPPORT, HARD_WRITE_LOCK_SUPPORT, REPORTS, UNICODE, MULTI_BIT_ALARM_SUPPORT and FB_ACTION_RESTART_RELINK

cycle types are: SCHEDULED, and COMPLETION_OF_BLOCK_EXECUTION

attempting a download.

parameters to non-volatile memory. Zero means it will never be automatically copied. At the end of NV_CYCLE_T, only those parameters which have changed need to be updated in NVRAM.

resource.

locations. Shed from RCas will never happen when SHED_RCAS = 0.

locations. Shed from ROut will never happen when SHED_ROUT = 0.

output block or physical contact. When FAIL_SAFE condition is set, then output function blocks will perform their FAIL_SAFE actions.

condition has cleared.

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Table 3-2. Resource Block Parameters

Number Parameter Description

32 LIM_NOTIFY Maximum number of unconfirmed alert notify messages allowed. 33 CONFIRM_TIME The time the resource will wait for confirmation of receipt of a report before trying

34 WRITE_LOCK If set, all writes to static and non-volatile parameters are prohibited, except to clear

35 UPDATE_EVT This alert is generated by any change to the static data. 36 BLOCK_ALM The BLOCK_ALM is used for all configuration, hardware, connection failure or

37 ALARM_SUM The current alert status, unacknowledged states, unreported states, and disabled

38 ACK_OPTION Selection of whether alarms associated with the block will be automatically

39 WRITE_PRI Priority of the alarm generated by clearing the write lock. 40 WRITE_ALM This alert is generated if the write lock parameter is cleared. 41 ITK_VER Major revision number of the interoperability test case used in certifying this

42 FD_VER This parameter's value equals the value of the major version of the Field

43 FD_FAIL_ACTIVE Reflects the error conditions that are being detected as active as selected for this

44 FD_OFFSPEC_ACTIVE Reflects the error conditions that are being detected as active as selected for this

45 FD_MAINT_ACTIVE Reflects the error conditions that are being detected as active as selected for this

46 FD_CHECK_ACTIVE Reflects the error conditions that are being detected as active as selected for this

47 FD_FAIL_MAP Maps conditions to be detected as active for this alarm category. Thus the same

48 FD_OFFSPEC_MAP Maps conditions to be detected as active for this alarm category. Thus the same

49 FD_MAINT_MAP Maps conditions to be detected as active for this alarm category. Thus the same

50 FD_CHECK_MAP Maps conditions to be detected as active for this alarm category. Thus the same

51 FD_FAIL_MASK Allows the user to suppress any single or multiple conditions that are active, in this

52 FD_OFFSPEC_MASK Allows the user to suppress any single or multiple conditions that are active, in this

53 FD_MAINT_MASK Allows the user to suppress any single or multiple conditions that are active, in this

54 FD_CHECK_MASK Allows the user to suppress any single or multiple conditions that are active, in this

again. Retry will not happen when CONFIRM_TIME=0.

WRITE_LOCK. Block inputs will continue to be updated.

system problems in the block. The cause of the alert is entered in the subcode field. The first alert to become active will set the Active status in the Status attribute. As soon as the Unreported status is cleared by the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

states of the alarms associated with the function block.

acknowledged.

device as interoperable. The format and range are controlled by the fieldbus FOUNDATION.

Diagnostics specification that this device was designed to.

category. It is a bit string, so that multiple conditions may be shown.

condition may be active in all, some, or none of the 4 alarm categories.

category, from being broadcast to the host through the alarm parameter. A bit equal to ‘1’ will mask i.e. inhibit the broadcast of a condition, and a bit equal to ‘0’ will unmask i.e. allow broadcast of a condition.

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Table 3-2. Resource Block Parameters

Number Parameter Description

55 FD_FAIL_ALM Used primarily to broadcast a change in the associated active conditions, which are

56 FD_OFFSPEC_ALM Used primarily to broadcast a change in the associated active conditions, which are

57 FD_MAINT_ALM Used primarily to broadcast a change in the associated active conditions, which are

58 FD_CHECK_ALM Used primarily to broadcast a change in the associated active conditions, which are

59 FD_FAIL_PRI Allows the user to specify the priority of this alarm category. 60 FD_OFFSPEC_PRI Allows the user to specify the priority of this alarm category. 61 FD_MAINT_PRI Allows the user to specify the priority of this alarm category. 62 FD_CHECK_PRI Allows the user to specify the priority of this alarm category. 63 FD_SIMULATE Allows the conditions to be manually supplied when simulation is enabled. When

64 FD_RECOMMEN_ACT A device enumerated summarization of the most severe condition or conditions

65 FD_EXTENDED_ACTIVE_1 An optional parameter or parameters to allow the user finer detail on conditions

66 FD_EXTENDED_MAP_1 An optional parameter or parameters to allow the user finer control on enabling

67 COMPATIBILITY_REV Optionally used when replacing field devices. The correct usage of this parameter

68 HARDWARE_REVISION Manufacturer hardware revision 69 SOFTWARE_REV Manufacturer hardware revision 70 PD_TAG PD tag description of device 71 DEV_STRING Used to load new licensing into the device. The value can be written but will always

72 DEV_OPTIONS Indicates which miscellaneous and diagnostic device licensing options are enabled.

73 OUTPUT_BOARD_SN Output board serial number 74 FINAL_ASSY_NUM Same final assembly number placed on the neck label 75 DOWNLOAD_MODE Gives access to the boot block code for over the wire downloads 76 HEALTH_INDEX Parameter shall be set based on the active FD alarms or PWA alarms.

77 FAI LE D_P RI Designates the alarming priority of the FAILED_ALM and also used as switch b/w FD

78 RECOMMENDED_ACTION Enumerated list of recommended actions displayed with a device alert 79 FA ILE D_A LM Alarm indicating a failure within a device which makes the device non-operational 80 MAINT _ALM Alarm indicating the device needs maintenance soon. If the condition is ignored,

81 ADVISE _ALM Alarm indicating advisory alarms. These conditions do not have a direct impact on

not masked, for this alarm category to a Host System.

simulation is disabled both the diagnostic simulate value and the diagnostic value track the actual conditions. The simulate jumper is required for simulation to be enabled and while simulation is enabled the recommended action will show that simulation is active.

detected. The DD help should describe by enumerated action, what should be done to alleviate the condition or conditions. 0 is defined as Not Initialized, 1 is defined as No Action Required, all others defined by manufacturer.

causing an active condition in the FD_*_ACTIVE parameters.

conditions contributing to the conditions in FD_*_ACTIVE parameters.

presumes the COMPATIBILIT Y_REV value of the replacing device should be equal or lower than the DEV_REV value of the replaced device.

read back with a value of 0.

It also indicates Transducer options.

HEALTH_INDEX will show 100 if target mode of block is OOS or there are no active alarms in device. The table below represents HEALTH_INDEX value when FD or PWA alarms are active in a device.

and legacy PWA. If value is greater than or equal to 1 then PWA alerts will be active in device else device will have FD alerts.

the device will eventually fail.

the process or device integrity.

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Table 3-2. Resource Block Parameters

Number Parameter Description

82 FAI LE D_E NA BLE Enabled FAILED_ALM alarm conditions. Corresponds bit for bit to the

83 FA ILE D_M AS K Mask of Failure Alarm. Corresponds bit for bit to the FAILED_ACTIVE. A bit on

84 FAI LED _AC TI VE Enumerated list of failure conditions within a device. All open bits are free to be

85 MAINT_PRI Designates the alarming priority of the MAINT_ALM 86 MAINT_ENABLE Enabled MAINT_ALM alarm conditions. Corresponds bit for bit to the

87 MAINT_MASK Mask of Maintenance Alarm. Corresponds bit for bit to the MAINT_ACTIVE. A bit on

88 MAINT_ACTIVE Enumerated list of maintenance conditions within a device. All open bits are free to

89 ADVISE_PRI Designates the alarming priority of the ADVISE_ALM 90 ADVISE_ENABLE Enabled ADVISE_ALM alarm conditions. Corresponds bit for bit to the

91 ADVISE_MASK Mask of Advisory Alarm. Corresponds bit for bit to the ADVISE_ACTIVE. A bit on

92 ADVISE_ACTIVE Enumerated list of advisory conditions within a device. All open bits are free to be

FAILED_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected. This parameter is the Read Only copy of FD_FAIL_MAP.

means that the failure is masked out from alarming. This parameter is the Read Only copy of FD_FAIL_MASK.

used as appropriate for each specific device.This parameter is the Read Only copy of FD_FAIL_ACTIVE.

MAINT_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected.This parameter is the Read Only copy of FD_OFFSPEC_MAP.

means that the failure is masked out from alarming.This parameter is the Read Only copy of FD_OFFSPEC_MASK.

be used as appropriate for each specific device. This parameter is the Read Only copy of FD_OFFSPEC_ACTIVE.

ADVISE_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected.This parameter is the Read Only copy of FD_MAINT_MAP & FD_CHECK_MAP.

means that the failure is masked out from alarming.This parameter is the Read Only copy of FD_MAINT_MASK & FD_CHECK_MASK.

used as appropriate for each specific device. This parameter is the Read Only copy of FD_MAINT_ACTIVE & FD_CHECK_ACTIVE.

Configuration

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Block errors

The table below lists conditions reported in the BLOCK_ERR parameter.

Table 3-3. BLOCK_ERR Conditions

Number

0 Other

1 Block Configuration Error: A feature in CYCLE_SEL is set that is not supported by

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Name and description

CYCLE_TYPE.

3 Simulate Active: This indicates that the simulation jumper is in place. This is not an

6 Device needs maintenance soon

7 Input failure/process variable has bad status

9 Memory Failure: A memory failure has occurred in FLASH, RAM, or EEPROM memory.

10 Lost Static Data: Static data that is stored in non-volatile memory

11 Lost NV Data: Non-volatile data that is stored in non-volatile memory

13 Device Needs Maintenance Now

14 Power Up: The device was just powered-up.

15 OOS: The actual mode is out of service.

indication that the I/O blocks are using simulated data.

has been lost.

Modes

The resource block supports two modes of operation as defined by the MODE_BLK parameter:

Automatic (Auto)

The block is processing its normal background memory checks.

Out of service (OOS)

The block is not processing its tasks. When the resource block is in OOS, all blocks within the resource (device) are forced into OOS. The BLOCK_ERR parameter shows Out of Service. In this mode, changes can be made to all configurable parameters. The target mode of a block may be restricted to one or more of the supported modes.

Alarm detection

A block alarm will be generated whenever the BLOCK_ERR has an error bit set. The types of block error for the resource block are defined above. A write alarm is generated whenever the WRITE_LOCK parameter is cleared. The priority of the write alarm is set in the following parameter:

 WRITE_PRI

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Table 3-4. Alarm Priority Levels

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Number Description

0 The priority of an alarm condition changes to 0 after the condition that caused the

1 An alarm condition with a priority of 1 is recognized by the system, but is not reported

2 An alarm condition with a priority of 2 is reported to the operator, but does not require

3-7 Alarm conditions of priority 3 to 7 are advisory alarms of increasing priority.

8-15 Alarm conditions of priority 8 to 15 are critical alarms of increasing priority.

alarm is corrected.

to the operator.

operator attention (such as diagnostics and system alerts).

Status handling

There are no status parameters associated with the resource block.

3.4.2 Field Diagnostics & PlantWeb Alerts

The 848T ITK6 has two mechanisms for alarms, one is Field Diagnostics (FD) and other is PlantWeb Alerts (PWA) for backward compatibility only.

The flexible capability has been added to allow user to select any alarm to be in the PWA FAILED/FD FAILED group or PWA MAINTENANCE/FD OFFSPEC group or PWA ADVISE/FD MAINTENANCE group or PWA ADVISE/FD CHECK group.

In PlantWeb Alerts, the alarms can be represented in three groups i.e. FAILED, MAINT & ADVISE. In Field Diagnostic, the alarms can be represented in four groups i.e. FAILED, OFFSPEC, MAINT & CHECK.

Parameter FAILED_PRI is used as a switch for using Field Diagnostic and PlantWeb Alerts.

How to use Field Diagnostic Alarm

If FAILED_PRI is equal to 0, Field Diagnostic alarms are supported and PlantWeb alarms are not. Field Diagnostic functionality includes four different Field Diagnostic Alarms such as FD_FAIL_ALM, FD_OFFSPEC_ALM, FD_MAINT_ALM and FD_CHECK_ALM. For these alarms, there are corresponding alarm priority parameter, masking parameter alarm active and alarm mapping parameter such as FD_*_PRI, FD_*_MASK & FD_*_ACTIVE & FD_*_MAP.

How to use PlantWeb Alarm

If FAILED_PRI is greater than 0, PlantWeb alarms are supported and Field Diagnostic are not. PlantWeb functionality includes three different PlantWeb Alarms FAILED_ALM, MAINT_ ALM and ADVISE_ ALM. For PlantWeb Alerts, there are corresponding alarm masking parameter, alarm active parameter and alarm mapping parameter such as *_MASK, *_ACTIVE & *_ENABLE. These parameters have Read only access and are duplicated from corresponding FD parameters.

So for example, in case of PWA alarms, if user wishes to change the mapping of any PlantWeb Alerts then the new value is written to the corresponding FD_*_MAP parameter. *_ENABLE shall reflect whatever is being written to FD_*_MAP parameter. The same applies for *_MASK parameters.

Note

Here * implies all 4 categories of FD alerts for e.g. FD_*_ACTIVE resembles FD_FAIL_ACTIVE, FD_OFFSPEC_ACTIVE, FD_MAINT_ACTIVE & FD_CHECK ACTIVE. The similar notation is also applicable for PWA alarms for e.g. FD_*_ACTIVE resembles FAIL_ACTIVE, MAINT_ACTIVE & ADVISE ACTIVE.

Configuration

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3.4.3 PlantWeb alerts

The alerts and recommended actions should be used in conjunction with “Operation and

Maintenance” on page 53.

The Resource Block will act as a coordinator for PlantWeb alerts. There will be three alarm parameters (FAILED_ALARM, MAINT_ALARM, and ADVISE_ALARM) which will contain information regarding some of the device errors which are detected by the transmitter software. There will be a RECOMMENDED_ACTION parameter which will be used to display the recommended action text for the highest priority alarm and a HEALTH_INDEX parameters (0 -

100) indicating the overall health of the transmitter. FAILED_ALARM will have the highest priority followed by MAINT_ALARM and ADVISE_ALARM will be the lowest priority.

FAILED_ALARMS

A failure alarm indicates a failure within a device that will make the device or some part of the device non-operational. This implies that the device is in need of repair and must be fixed immediately. There are five parameters associated with FAILED_ALARMS specifically, they are described below.

FAILED_ENABLED

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This parameter contains a list of failures in the device which makes the device non-operational that will cause an alert to be sent. Below is a list of the failures with the highest priority first.

Table 3-5. Failure Alarms

Alarm Priority

ASIC Failure 1

Electronics Failure 2

Hardware/Software Incompatible 3

Memory Failure 4

Body Temperature Failure 5

Sensor 1 Failure 6

Sensor 2 Failure 7

Sensor 3 Failure 8

Sensor 4 Failure 9

Sensor 5 Failure 10

Sensor 6 Failure 11

Sensor 7 Failure 12

Sensor 8 Failure 13

FAILED_MASK

This parameter will mask any of the failed conditions listed in FAILED_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

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MAINT_ALARMS

A maintenance alarm indicates the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail. There are five parameters associated with MAINT_ALARMS, they are described below.

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FAILED_PRI

Designates the alerting priority of the FAILED_ALM, see Table 3-4 on page 31. The default is 0 and the recommended value are between 8 and 15.

FAILED_ACTIVE

This parameter displays which of the alarms is active. Only the alarm with the highest priority will be displayed. This priority is not the same as the FAILED_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

FAILED_ALM

Alarm indicating a failure within a device which makes the device non-operational.

MAINT_ENABLED

The MAINT_ENABLED parameter contains a list of conditions indicating the device or some part of the device needs maintenance soon.

Table 3-6. Maintenance Alarms/Priority Alarm

Alarm Priority

CJC Degraded 1

Body Temperature Out of Range 2

Sensor 1 Degraded 3

Sensor 2 Degraded 4

Sensor 3 Degraded 5

Sensor 4 Degraded 6

Sensor 5 Degraded 7

Sensor 6 Degraded 8

Sensor 7 Degraded 9

Sensor 8 Degraded 10

MAINT_MASK

Configuration

The MAINT_MASK parameter will mask any of the failed conditions listed in MAINT_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

MAINT_PRI

MAINT_PRI designates the alarming priority of the MAINT_ALM, Table 3-4 on page 31. The default is 0 and the recommended values is 3 to 7.

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MAINT_ACTIVE

The MAINT_ACTIVE parameter displays which of the alarms is active. Only the condition with the highest priority will be displayed. This priority is not the same as the MAINT_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

MAINT_ALM

An alarm indicating the device needs maintenance soon. If the condition is ignored, the device will eventually fail.

Advisory alarms

An advisory alarm indicates informative conditions that do not have a direct impact on the device's primary functions. There are five parameters associated with ADVISE_ALARMS, they are described below.

ADVISE_ENABLED

The ADVISE_ENABLED parameter contains a list of informative conditions that do not have a direct impact on the device's primary functions. Below is a list of the advisories with the highest priority first.

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Alarm Priority

Excessive Deviation 1

Excessive Rate of Change 2

Check 3

Note

Alarms are only prioritized if Multi-Bit Alerts are disabled. If MBA is enabled, all alerts are visible.

ADVISE_MASK

The ADVISE_MASK parameter will mask any of the failed conditions listed in ADVISE_ENABLED. A bit on means the condition is masked out from alarming and will not be reported.

ADVISE_PRI

ADVISE_PRI designates the alarming priority of the ADVISE_ALM, see Table 3-4 on page 31. The default is 0 and the recommended values are 1 or 2.

ADVISE_ACTIVE

The ADVISE_ACTIVE parameter displays which of the advisories is active. Only the advisory with the highest priority will be displayed. This priority is not the same as the ADVISE_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

ADVISE_ALM

ADVISE_ALM is an alarm indicating advisory alarms. These conditions do not have a direct impact on the process or device integrity.

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3.4.4 Recommended actions for PlantWeb alerts

RECOMMENDED_ACTION

The RECOMMENDED_ACTION parameter displays a text string that will give a recommended course of action to take based on which type and which specific event of the PlantWeb alerts are active.

Table 3-7. RB.RECOMMENDED_ACTION

Alarm type Active event Recommended action

None None No action required

Advisory Excessive Deviation Verify the process temperature, sensor wiring, and check

sensor integrity.

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Advisory Excessive Rate of

Change

Maintenance CJC Degraded If T/C sensors are being used, restart the device. If condition

Maintenance Body Temperature

Out of Range

Maintenance Sensor 1 Degraded Confirm the operating range of Sensor 1 and/or verify the

Maintenance Sensor 2 Degraded Confirm the operating range of Sensor 2 and/or verify the

Maintenance Sensor 3 Degraded Confirm the operating range of Sensor 3 and/or verify the

Maintenance Sensor 4 Degraded Confirm the operating range of Sensor 4 and/or verify the

Maintenance Sensor 5 Degraded Confirm the operating range of Sensor 5 and/or verify the

Maintenance Sensor 6 Degraded Confirm the operating range of Sensor 6 and/or verify the

Maintenance Sensor 7 Degraded Conform the operating range of Sensor 7 and/or verify the

Maintenance Sensor 8 Degraded Confirm the operating range of Sensor 8 and/or verify the

Failed Sensor 1 Failure Verify the Sensor 1 Instrument process is within the Sensor

Failed Sensor 2 Failure Verify the Sensor 2 Instrument process is within the Sensor

Failed Sensor 3 Failure Verify the Sensor 3 Instrument process is within the Sensor

Verify sensor wiring is appropriate in each junction point and check sensor integrity.

persists, replace the device.

Verify the ambient temperature is within operating limits.

sensor connection and device environment.

range and/or confirm sensor configuration and wiring.

Configuration

Failed Sensor 4 Failure Verify the Sensor 4 Instrument process is within the Sensor

range and/or confirm sensor configuration and wiring.

Failed Sensor 5 Failure Verify the Sensor 5 Instrument process is within the Sensor

range and/or confirm sensor configuration and wiring.

Failed Sensor 6 Failure Verify the Sensor 6 Instrument process is within the Sensor

range and/or confirm sensor configuration and wiring.

Failed Sensor 7 Failure Verify the Sensor 7 Instrument process is within the Sensor

range and/or confirm sensor configuration and wiring.

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Table 3-7. RB.RECOMMENDED_ACTION

Alarm type Active event Recommended action

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Failed Sensor 8 Failure Verify the Sensor 8 Instrument process is within the Sensor

Failed Body Temperature

Failure

Failed Hardware/Software

Incompatible

Failed Memory Error Restart the transmitter by writing the RESTART parameter to

Failed Electronics Failure Electronics failure has occurred. Restart the transmitter. If

Failed ASIC Failure ASIC failure has occurred. Restart the transmitter. If condition

Note

If status is set up to flag failure/warning you will see associated sensor degraded or failure alert.

3.4.5 Field Diagnostics Alerts

The Resource Block will act as a coordinator for Field Diagnostic Alerts. There will be four alarm parameters (FD_FAILED_ALARM, FD_OFFSPEC_ALARM, FD_MAINT_ALARM, and FD_CHECK_ALARM) that will contain information regarding some of the device errors that are detected by the transmitter software. There will be a RECOMMENDED_ACTION parameter that will be used to display the recommended action text for the highest priority alarm and a HEALTH_INDEX parameters (0 - 100) indicating the overall health of the transmitter. FD_FAILED_ALARM will have the highest priority followed by FD_OFFSPEC_ALARM, FD_MAINT_ALARM and FD_CHECK_ALARM will be the lowest priority.

range and/or confirm sensor configuration and wiring.

Verify the ambient temperature is within the operating limits of this device. If condition persists, replace the device.

Contact Service Center to verify the Device Information (RESOURCE.HARDWARE_REV, AND RESOURCE.RB_SFTWR_REV_ALL).

4 - Restart Processor. If condition persists, replace the transmitter.

condition persists, replace the transmitter.

persists, replace the transmitter.

FD failed alarms

A failure alarm indicates a failure within a device that will make the device or some part of the device non-operational. This implies that the device is in need of repair and must be fixed immediately. There are five parameters associated with FD_FAILED_ALARMS specifically, they are described below.

FD_FAILED_MAP

FD_FAIL_MAP parameter maps conditions to be detected as active for FD_FAIL_ALARM category. Thus the same condition may be active in all, some, or none of the 4 alarm categories. Below is a list of the failures with the highest priority first.

Table 3-8. FD Failure Alarms

Alarm Priority

ASIC Failure 1

Electronics Failure 2

Hardware/Software Incompatible 3

Memory Failure 4

Body Temperature Failure 5

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Table 3-8. FD Failure Alarms

FD_FAILED_MASK

FD_FAIL_MASK parameter will mask any of the failed conditions listed in FD_FAILED_MAP. A bit on means the condition is masked out from alarming and will not be reported.

FD_FAILED_PRI

Designates the alerting priority of the FD_FAILED_ALM, see Table 3-4 on page 31. The default is 0 and the recommended value are between 8 and 15.

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Alarm Priority

Sensor 1 Failure 6

Sensor 2 Failure 7

Sensor 3 Failure 8

Sensor 4 Failure 9

Sensor 5 Failure 10

Sensor 6 Failure 11

Sensor 7 Failure 12

Sensor 8 Failure 13

FD_FAILED_ACTIVE

FD_FAIL_ACTIVE parameter displays the active alarms is active that are being selected for this category. Only the alarm with the highest priority will be displayed. This priority is not the same as the FD_FAILED_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

FD_FAILED_ALM

FD_FAIL_ALM indicates a failure within a device which makes the device non-operational. FD_FAIL_ALM parameter is used primarily to broadcast a change in the associated active conditions, which are not masked, for this alarm category to a Host System.

FD OFFSPEC ALARMS

An offspec alarm indicates that the device or some part of the device needs maintenance soon, if the condition is ignored the device will eventually fail. There are five parameters associated with FD OFFSPEC ALARMS, they are described below.

FD_OFFSPEC_MAP

FD_OFFSPEC_MAP parameter maps conditions to be detected as active for FD_ OFFSPEC _ALARM category. Thus the same condition may be active in all, some, or none of the 4 alarm categories. Below is a list of the failures with the highest priority first.

Table 3-9. FD Offspec Alarms

Alarm Priority

Configuration

CJC Degraded 1

Body Temperature Out of Range 2

Sensor 1 Degraded 3

Sensor 2 Degraded 4

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Table 3-9. FD Offspec Alarms

Alarm Priority

Sensor 3 Degraded 5

Sensor 4 Degraded 6

Sensor 5 Degraded 7

Sensor 6 Degraded 8

Sensor 7 Degraded 9

Sensor 8 Degraded 10

FD_ OFFSPEC _MASK

The FD_OFFSPEC_MASK parameter will mask any of the failed conditions listed in FD_OFFSPEC_MAP. A bit on means the condition is masked out from alarming and will not be reported.

FD_ OFFSPEC _PRI

FD_OFFSPEC_PRI designates the alarming priority of the FD_OFFSPEC _ALM, see Table 3 -4 on

page 31. The default is 0 and the recommended values are 3 to 7.

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FD_ OFFSPEC _ACTIVE

FD_ OFFSPEC _ACTIVE parameter displays the active alarms is active that are being selected for this category. Only the alarm with the highest priority will be displayed. This priority is not the same as the FD_ OFFSPEC _PRI parameter described above. This priority is hard coded within the device and is not user configurable.

FD_ OFFSPEC _ALM

An alarm indicating the device needs maintenance soon. If the condition is ignored, the device will eventually fail. FD_ OFFSPEC _ALM parameter is used primarily to broadcast a change in the associated active conditions, which are not masked, for this alarm category to a Host System.

FD MAINT ALARMS

A maintenance alarm indicates informative conditions that do not have a direct impact on the device's primary function(s).There are five parameters associated with MAINT_ALARMS, they are described below.

FD_MAINT_MAP

The FD_MAINT_MAP parameter contains a list of conditions that do not have a direct impact on the device's primary function(s).

Table 3-10. Maintenance Alarms/Priority Alarm

Alarm Priority

Excessive Deviation 1

Excessive Rate of Change 2

FD_MAINT_MASK

The FD_MAINT_MASK parameter will mask any of the failed conditions listed in FD_MAINT_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

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FD_MAINT_PRI

FD_MAINT_PRI designates the alarming priority of the MAINT_ALM, Table 3-4 on page 31. The default is 0 and the recommended value is greater than 2.

FD_MAINT_ACTIVE

FD_ MAINT_ACTIVE parameter displays the active alarms is active that are being selected for this category. Only the alarm with the highest priority will be displayed. This priority is not the same as the FD_ MAINT_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

FD_MAINT_ALM

FD_ MAINT_ALM indicates advisory alarms. These conditions do not have a direct impact on the process or device integrity.

FD CHECK ALARMS

Section 3: Configuration

November 2014

FD_CHECK_MAP

The FD_CHECK_MAP parameter contains a list of informative conditions that do not have a direct impact on the device's primary functions. Below is a list of the advisories with the highest priority first.

Table 3-11. Check Alarms

Alarm Priority

Check 1

FD_ CHECK _MASK

The FD_CHECK _MASK parameter will mask any of the failed conditions listed in FD_CHECK _MAP. A bit on means the condition is masked out from alarming and will not be reported.

FD_ CHECK _PRI

FD_CHECK _PRI designates the alarming priority of the ADVISE_ALM, see Table 3-4 on page 31. The default is 0 and the recommended values is 1.

FD_ CHECK _ACTIVE

The FD_CHECK _ACTIVE parameter displays which of the advisories is active. Only the advisory with the highest priority will be displayed. This priority is not the same as the FD_CHECK _PRI parameter described above. This priority is hard coded within the device and is not user configurable.

Configuration

FD_ CHECK _ALM

FD_CHECK _ALM is an alarm indicating advisory alarms. These conditions do not have a direct impact on the process or device integrity.

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3.4.6 Recommended actions for field diagnostics alerts

RECOMMENDED_ACTION

The RECOMMENDED_ACTION parameter displays a text string that will give a recommended course of action to take based on which type and which specific event of the Field Diagnostics alerts are active.

Table 3-12. RB.RECOMMENDED_ACTION

Alarm type Active event Recommended action

None None No action required

Failed ASIC Failure ASIC Failure has occurred. Restart the transmitter. If condition

persists, replace the transmitter

Failed Electronics Failure Electronics Failure has occurred. Restart the transmitter. If

Failed Hardware/Software

Incompatible

Failed Memory Failure Restart the transmitter by writing the RESTART parameter to

Failed Body Temperature

Failure

Failed Sensor 1 Failure Verify the Instrument process for Sensor 1 is within the Sensor

Failed Sensor 2 Failure Verify the Instrument process for Sensor 2 is within the Sensor

Failed Sensor 3 Failure Verify the Instrument process for Sensor 3 is within the Sensor

Failed Sensor 4 Failure Verify the Instrument process for Sensor 4 is within the Sensor

Failed Sensor 5 Failure Verify the Instrument process for Sensor 5 is within the Sensor

Failed Sensor 6 Failure Verify the Instrument process for Sensor 6 is within the Sensor

Failed Sensor 7 Failure Verify the Instrument process for Sensor 7 is within the Sensor

condition persists, replace the transmitter.

Contact a Service Center and verify the Device Information (RESOURCE.HARDWARE_REV and RESOURCE.RB_SFTWR_REV)

4 - Restart Processor. If condition persists, replace the transmitter.

Verify the ambient temperature is within the operating limits of this device. If condition persists, replace the device

range and/or confirm sensor configuration and wiring.

Failed Sensor 8 Failure Verify the Instrument process for Sensor 8 is within the Sensor

Off Spec CJC Degraded If T/C sensors are being used, restart the device. If condition

Off Spec Body Temperature

Out of Range

Off Spec Sensor 1 Degraded Confirm the operating range of Sensor 1 and/or verify the

Off Spec Sensor 2 Degraded Confirm the operating range of Sensor 2 and/or verify the

Off Spec Sensor 3 Degraded Confirm the operating range of Sensor 3 and/or verify the

range and/or confirm sensor configuration and wiring.

persists, replace the device.

Verify the ambient temperature is within operating limits

sensor connection and device environment.

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Table 3-12. RB.RECOMMENDED_ACTION

Section 3: Configuration

November 2014

Alarm type Active event Recommended action

Off Spec Sensor 4 Degraded Confirm the operating range of Sensor 4 and/or verify the

Off Spec Sensor 5 Degraded Confirm the operating range of Sensor 5 and/or verify the

Off Spec Sensor 6 Degraded Confirm the operating range of Sensor 6 and/or verify the

Off Spec Sensor 7 Degraded Confirm the operating range of Sensor 7 and/or verify the

Off Spec Sensor 8 Degraded Confirm the operating range of Sensor 8 and/or verify the

Maintenance Excessive Deviation Verify the process temperature, sensor wiring, and check

Maintenance Excessive Rate of

Change

Check Check Transducer block under maintenance

3.4.7 Transducer blocks

The transducer block allows the user to view and manage the channel information. There is one transducer block for the eight sensors that contains specific temperature measurement data, including:

 Sensor Type  Engineering Units  Damping  Temperature Compensation

sensor connection and device environment.

sensor integrity.

Verify sensor wiring is appropriate in each junction point and check sensor integrity

Configuration

 Diagnostics

Transducer block channel definitions

The 848T supports multiple sensor inputs. Each input has a channel assigned to it allowing an AI or MAI Function Blocks to be linked to that input. The channels for the 848T are as follows:

Table 3-13. Channel Definitions for the 848T

Channel Description Channel Description

1 Sensor One 16 Sensor 3 Deviation

2 Sensor Two 17 Sensor 4 Deviation

3 Sensor Three 18 Sensor 5 Deviation

4 Sensor Four 19 Sensor 6 Deviation

5 Sensor Five 20 Sensor 7 Deviation

6 Sensor Six 21 Sensor 8 Deviation

7 Sensor Seven 22 Sensor 1 Rate Change

8 Sensor Eight 23 Sensor 2 Rate Change

9 Differential Sensor 1 24 Sensor 3 Rate Change

Section 3: Configuration

A/D

Signal

Conversion

CJC

Diagnostics

Linearization

Tem per at ure

Compensation

Damping

Units/Ranging

DS1

DS2

DS3

DS4

Channel

November 2014

Table 3-13. Channel Definitions for the 848T

Channel Description Channel Description

10 Differential Sensor 2 25 Sensor 4 Rate Change

11 Differential Sensor 3 26 Sensor 5 Rate Change

12 Differential Sensor 4 27 Sensor 6 Rate Change

13 Body Temperature 28 Sensor 7 Rate Change

14 Sensor 1 Deviation 29 Sensor 8 Rate Change

15 Sensor 2 Deviation

Figure 3-1. Transducer Block Data Flow

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Transducer block errors

The following conditions are reported in the BLOCK_ERR and XD_ERROR parameters.

Table 3-14. Block/Transducer Error

Condition number, name, and description

0 Other

7 Input failure/process variable has bad status

BLOCK_ERR

15 Out of service: The actual mode is out of service

(1) If BLOCK_ERR is “other,” then see XD_ERROR.

Transducer block modes

(1)

The transducer block supports two modes of operation as defined by the MODE_BLK parameter:

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Automatic (Auto)

The block outputs reflect the analog input measurement.

Out of Service (OOS)

The block is not processed. Channel outputs are not updated and the status is set to Bad: Out of Service for each channel. The BLOCK_ERR parameter shows Out of Service. In this mode, changes can be made to all configurable parameters. The target mode of a block may be restricted to one or more of the supported modes.

Transducer block alarm detection

Alarms are not generated by the transducer block. By correctly handling the status of the channel values, the down stream block (AI or MAI) will generate the necessary alarms for the measurement. The error that generated this alarm can be determined by looking at BLOCK-ERR and XD_ERROR.

Transducer block status handling

Normally, the status of the output channels reflect the status of the measurement value, the operating condition of the measurement electronics card, and any active alarm conditions. In a

transducer, PV reflects the value and status quality of the output channels.

Table 3-15. Transducer Block Parameters

Section 3: Configuration

November 2014

Number Parameter Description

0 BLOCK

1 ST_REV The revision level of the static data associated with the

2 TAG_DESC The user description of the intended application of the

3 STRATEGY The strategy field can be used to identify grouping of

4 ALERT_KEY The identification number of the plant unit.

5 MODE_BLK The actual, target, permitted, and normal modes of the

6 BLOCK_ERR This parameter reflects the error status associated with

7 UPDATE_EVENT This alert is generated by any change to the static data.

8 BLOCK_ALM The BLOCK-ALM is used for all configuration, hardware,

9 TRANSDUCER_DIRECTORY A directory that specified the number and stating

10 TRANSDUCER_TYPE Identifies the transducer that follows 101 – Standard

function block.

block.

blocks.

block.

the hardware or software components associated with a block. Multiple errors may be shown. For a list of enumeration values, see FF-890, Block_Err formal model.

connection failure or system problems in the block. The cause of the alert is entered in the subcode field. The first alert to become active will set the Active status in the Status attribute. As soon as the Unreported status is cleared by the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

indices of the transducers in the transducer block.

Temperature with Calibration.

Configuration

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November 2014

Table 3-15. Transducer Block Parameters

Number Parameter Description

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11 XD_ERROR Provides additional error codes related to transducer

blocks. For a list of enumeration values, see FF-902. See tables below for a list of sub-parameters that pertain to XD_ERROR messages.

12 COLLEC TION_DIRECTORY A directory that specifies the number, starting indices,

and DD Item ID’s of the data collections in each transducer block.

13 SENSOR_1_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

14 PRIMARY_VALUE_1 The measured value and status available to the function

block.

15 SENSOR_2_CONFIG Sensor Configuration parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

16 PRIMARY_VALUE_2 The measured value and status available to the function

block.

17 SENSOR_3_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

18 PRIMARY_VALUE_3 The measured value and status available to the function

block

19 SENSOR_4_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

20 PRIMARY_VALUE_4 The measured value and status available to the function

block.

21 SENSOR_5_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

22 PRIMARY_VALUE_5 The measured value and status available to the function

block.

23 SENSOR_6_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

24 PRIMARY_VALUE_6 The measured value and status available to the function

block.

25 SENSOR_7_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

26 PRIMARY_VALUE_7 The measured value and status available to the function

block.

27 SENSOR_8_CONFIG Sensor Configuration Parameters. See tables below for a

list of sub-parameters that pertain to Sensor Configuration functions.

28 PRIMARY_VALUE_8 The measured value and status available to the function

block

29 SENSOR_STATUS Status of each individual sensor. See tables below for a

list of possible status messages.

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Table 3-15. Transducer Block Parameters

Section 3: Configuration

November 2014

Number Parameter Description

30 SENSOR_CAL Parameter structure to allow for calibration of each

sensor. See tables below for a list of sub-parameters that pertain to Sensor Calibration functions.

31 CAL_STATUS Status of the calibration that was previously performed.

See tables below for a list of possible Calibration Statuses.

32 ASIC_REJECTION A configurable power line noise rejection setting.

33 BODY_TEMP Body Temperature of the device.

34 BODY_TEMP_RANGE The range of the body temperature including the units

index.

35 TB_SUMMARY_STATUS Overall summary status of the sensor transducer. See

tables below for a list of possible transducer statuses.

36 DUAL_SENSOR_1_CONFIG Parameter structure to allow for calibration of each

differential measurement. See tables below for a list of sub-parameters that pertain to Dual Sensor Calibration functions.

37 DUAL_SENSOR_VALUE_1 The measured value and status available to the function

block.

38 DUAL_SENSOR_2_CONFIG Parameter structure to allow for calibration of each

differential measurement. See tables below for a list of sub-parameters that pertain to Dual Sensor Calibration functions.

39 DUAL_SENSOR_VALUE_2 The measured value and status available to the function

block.

40 DUAL_SENSOR_3_CONFIG Parameter structure to allow for calibration of each

differential measurement. See tables below for a list of sub-parameters that pertain to Dual Sensor Calibration functions.

41 DUAL_SENSOR_VALUE_3 The measured value and status available to the function

block.

Configuration

42 DUAL_SENSOR_4_CONFIG Parameter structure to allow for calibration of each

differential measurement. See tables below for a list of sub-parameters that pertain to Dual Sensor Calibration functions.

43 DUAL_SENSOR_VALUE_4 The measured value and status available to the function

block.

44 DUAL_SENSOR_STATUS Status of each individual differential measurement. See

tables below for a list of possible Dual Sensor statuses.

45 VALIDATION_SNSR1_CONFIG Validation configuration parameters. See tables below

for a list of sub-parameters that pertain to Validation Configuration functions.

46 VALIDATION_SNSR1_VALUES Validation value parameters. See tables below for a list

of sub-parameters that pertain to Validation values.

47 VALIDATION_SNSR2_CONFIG Validation configuration parameters. See tables below

for a list of sub-parameters that pertain to Validation Configuration functions.

48 VALIDATION_SNSR2_VALUES Validation value parameters. See tables below for a list

of sub-parameters that pertain to Validation values.

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November 2014

Table 3-15. Transducer Block Parameters

Number Parameter Description

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49 VALIDATION_SNSR3_CONFIG Validation configuration parameters. See tables below

50 VALIDATION_SNSR3_VALUES Validation value parameters. See tables below for a list

51 VALIDATION_SNSR4_CONFIG Validation configuration parameters. See tables below

52 VALIDATION_SNSR4_VALUES Validation value parameters. See tables below for a list

53 VALIDATION_SNSR5_CONFIG Validation configuration parameters. See tables below

54 VALIDATION_SNSR5_VALUES Validation value parameters. See tables below for a list

55 VALIDATION_SNSR6_CONFIG Validation configuration parameters. See tables below

56 VALIDATION_SNSR6_VALUES Validation value parameters. See tables below for a list

57 VALIDATION_SNSR7_CONFIG Validation configuration parameters. See tables below

58 VALIDATION_SNSR7_VALUES Validation value parameters. See tables below for a list

59 VALIDATION_SNSR8_CONFIG Validation configuration parameters. See tables below

60 VALIDATION_SNSR8_VALUES Validation value parameters. See tables below for a list

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

for a list of sub-parameters that pertain to Validation Configuration functions.

of sub-parameters that pertain to Validation values.

61 SENSOR_GRAPH_LIMIT Sensor graph limit parameters

62 DIFFERENTIAL_GRAPH_LIMIT Differential graph limit parameters

Changing the sensor configuration in the transducer block

If the FOUNDATION fieldbus configuration tool or host system does not support the use of DD methods for device configuration, the following steps illustrate how to change the sensor configuration in the transducer block:

1. Set the MODE_BLK.TARGET to OOS, or set the SENSOR_MODE to configuration.

2. Set SENSOR_n_CONFIG.SENSOR to the appropriate sensor type, and then set SENSOR_n_CONFIG.CONNECTION to the appropriate type and connection.

3. In the Transducer Block, set MODE_BLK.TARGET to AUTO, or set the SENSOR_MODE to operation.

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3.4.8 Transducer block sub-parameter tables

Table 3-16. XD_ERROR Sub-parameter Structure

XD ERROR Description

0 No Error

17 General Error

An error has occurred that could not be classified as one of the errors listed below.

Section 3: Configuration

November 2014

18 Calibration Error

19 Configuration Error

20 Electronics Failure An electronic component has failed.

22 I/O Failure An I/O failure has occurred.

23 Data Integrity Error

24 Software Error

25 Algorithm Error

An error occurred during calibration of the device or a calibration error has been detected during operation of the device.

An error occurred during configuration of the device or a configuration error has been detected during operation of the device.

Indicates that data stored within the system may no longer be valid due to non-volatile memory checksum failure, data verify after write failure, etc.

The software has detected an error. This could be caused by an improper interrupt service routine, an arithmetic overflow, a watchdog timer, etc.

The algorithm used in the transducer block produced an error. This could be due to an overflow, data reasonableness.

Table 3-17. SENSOR_CONFIG Sub-parameter Structure

Parameter Description

SENSOR_MODE Disables or enables a sensor for configuration.

SENSOR_TAG Sensor description.

SERIAL_NUMBER Serial number for the attached sensor.

SENSOR

DAMPING

Sensor Type and Connection. MSB is the sensor type and LSB is the connection.

Sampling Interval used to smooth output using a first order linear filter. A value entered between 0 and the Update_Rate, will result in a damping value equal to the Update_Rate.

Configuration

INPUT_TRANSIENT_FILTER

RTD_2_WIRE_OFFSET

ENG_UNITS The engineering units used for reporting measured sensor values.

UPPER_RANGE

LOWER_RANGE

Enables or Disables the option for reporting fast changing sensor inputs without temporary holdoff. 0 = Disable, 1 = Enabled.

User entered value for constant lead-wire resistance correction in a 2-wire RTD and ohm sensor types.

The upper sensor limit for the selected sensor is displayed using Units_Index sub parameter.

The lower sensor limit for the selected sensor is displayed using Units_Index sub parameter.

Section 3: Configuration

November 2014

Table 3-18. SENSOR_STATUS Sub-parameter Structure

Sensor status table

0x00 Active

0x01 Out of Service

0x02 Inactive

0x04 Open

0x08 Short

0x10 Out of Range

0x20 Beyond Limits

0x40 Excess EMF Detected

0x80 Other

Table 3-19. SENSOR_CAL Sub-parameter Structure

Parameter Description

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SENSOR_NUMBER The sensor number to calibrate

CALIB_POINT_HI The High calibration point for the selected sensor

CALIB_POINT_LO The Low calibration point for the selected sensor

CALIB_UNIT The engineering units used for calibrating the sensor

CALIB_METHOD

CALIB_INFO Information regarding the calibration

CALIB_DATE Date that the calibration was completed

CALIB_MIN_SPAN

CALIB_PT_HI_LIMIT The High calibration unit

CALIB_PT_LO_LIMIT The Low calibration unit

The method of the last calibration for sensor 103 - factory trim standard calibration 104 - user trim standard calibration

The minimum calibration span value allowed. This minimum span information is necessary to ensure that when calibration is done, the two calibrated points are not too close together

Table 3-20. CAL_STATUS Structure

Cal status

0 No Command Active

1 Command Executing

2 Command Done

3 Command Done: Errors

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Table 3-21. Transducer Status Sub-parameter Structure

Table 3-22. DUAL_SENSOR CONFIG Sub-parameter Structure

Section 3: Configuration

November 2014

Transducer status table

0x01 A/D Failure

0x02 Sensor Failure

0x04 Dual Sensor Failure

0x08 CJC Degraded

0x10 CJC Failure

0x20 Body Temp Failure

0x40 Sensor Degraded

0x80 Body Temperature Degraded

Parameter Description

DUAL_SENSOR_MODE Disables or enables a sensor for configuration

DUAL_SENSOR_TAG Differential description

INPUT_A Sensor to be used in DUAL_SENSOR_CALC

INPUT_B Sensor to be used in DUAL_SENSOR_CALC

DUAL_SENSOR_CALC

ENG_UNITS Units used to display sensor parameter

UPPER_RANGE Upper Differential Limit (Input A High - Input B Low)

LOWER_RANGE Lower Differential Limit (Input A Low - Input B High)

Equation used for the dual sensor measurement including: Not Used, Difference (Input A - Input B), and Absolute Difference (Input A - Input B)

Table 3-23. DUAL_SENSOR_STATUS Sub-parameter Structure

Dual sensor status table

0x00 Active

0x01 Out of Service

0x02 Inactive

0x04 Component Sensor Open

0x08 Component Sensor Short

0x10 Component Sensor Out of Range or Degraded

0x20 Component Sensor Out of Limits

0x40 Component Sensor Inactive

0x80 Configuration Error

Configuration

Section 3: Configuration

November 2014

Table 3-24. Validation Value Sub-parameter Structure

Validation value sub-parameter structure

Parameter Description

VAL IDAT IO N_S TATUS State of the channel specific measurement validation measurement

DEVIATION_VALUE Deviation output value

DEVIATION_STATUS Status of the deviation output

RATE_OF_CHANGE_VALUE Rate of change value output

RATE_OF_CHANGE_STATUS Status of Rate of change output

Table 3-25. Validation Config Sub-parameter Structure

Parameter Description

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VALIDATION_MODE

SAMPLE_RATE

DEVIATION_LIMIT

DEVIATION_ENG_UNITS Units tied to the deviation output value

DEVIATION_ALERT_SEVERITY

DEVIATION_PCNT_LIM_HYST

RATE_INCREASING_LIMIT Increasing Rate of Change limit set point

RATE_DECREASING_LIMIT Decreasing Rate of Change limit set point

RATE_ENG_UNITS Units tied to the rate of change output value

RATE_ALERT_SEVERITY

RATE_PCNT_LIM_HYST

Activates the measurement validation data gathering process

0 = Disable 1 = Enable

Number of seconds per sample used for measurement validation data collection. This shouldn't exceed 10 seconds per sample, but currently there are no upper limits.

Sets the limit for the deviation diagnostic. DD limits the upper range to 10.

Advisory, Maintenance, Failure

0 = Disabled = Does not use the limits, but provides an output 1 = Advisory = No effect on sensor status, sets advisory PWA 2 = Maint = Sets sensor status to uncertain, sets advisory PWA 3 = Failure = Sets sensor status to Bad, sets advisory PWA

Deviation Hysteresis Limit = (1 - DEVIATION_PCNT_LIM_HYST/100) * DEVIATION_LIMIT

Advisory, Maintenance, Failure

Rate of Change Increasing Hysteresis Limit = (1 RATE_PCNT_LIM_HYST/100) * RATE_INCREASING_LIMIT

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Sensor calibration in the sensor transducer block

If the FOUNDATION fieldbus configuration tool or host system does not support the use of DD methods for device configuration, the following steps illustrate how to calibrate the sensor from the sensor transducer block.

Note

Active calibrators should not be used in conduction with RTDs on any multiple input temperature transmitter such as the 848T.

1. Under SENSOR_CALIB, the SENSOR_NUMBER to the number of the sensor to calibrate.

2. Set CALIB_UNIT to calibration unit.

3. Set CALIB_METHOD to User Trim (seeTable on page 41 for valid values).

4. Set the input value of the sensor simulator to be within the range defined by

5. Set CALIB_POINT_LO (CALIB_POINT_HI) to the value set at the sensor simulator.

6. Read CALIB_STATUS and wait until it reads “Command Done”

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November 2014

CALIB_LO_LIMIT and CALIB_HI_LIMIT.

7. Repeat steps 3 to 5 if performing a two-point trim. Note that the difference in values between CALIB_POINT_LO and CALIB_POINT_HI must be greater than CALIB_MIN_SPAN.

Configuration

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Configuration

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Section 4: Operation and Maintenance

November 2014

Section 4 Operation and Maintenance

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53

Foundation™ fieldbus information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 53

Hardware maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 55

4.1 Safety messages

Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is

indicated by a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

4.1.1 Warnings

Failure to follow these installation guidelines could result in death or serious injury.

 Make sure only qualified personnel perform the installation.

Process leaks could result in death or serious injury.

 Do not remove the thermowell while in operation. Removing while in operation may

cause process fluid leaks.

 Install and tighten thermowells and sensors before applying pressure, or process

leakage may result.

Electrical shock could cause death or serious injury.

 If the senor is installed in a high voltage environment and a fault condition or

installation error occurs, high voltage may be present on transmitter leads and terminals.

 Use extreme caution when making contact with the leads and terminals.

4.2 FOUNDATION™ fieldbus information

FOUNDATION fieldbus is an all-digital, serial, two-way, multi-drop communication protocol that interconnects devices such as transmitters and valve controllers. It is a local area network (LAN) for instruments that enable basic control and I/O to be moved to the field devices. The Model 848T uses F Management and the other members of the independent Fieldbus Foundation.

OUNDATION fieldbus technology developed and supported by Emerson Process

Operation and Maintenance

Section 4: Operation and Maintenance

FOUNDATION

fieldbus

Communications

Stack

Analog-to-Digital

Signal Conversion

Cold Junction

Input-to-Output

Isolation

Resource Block

•physical device information

Function Blocks

•AI, MAI, and ISEL

Tra nsdu cer Blo ck Measurement Sensor

•sensor a nd differential temp

•terminal temp.

•sensor configuration

•calibration

•diagnostics

(8 sensors)

November 2014

Table 4-1. Block Diagram for the Rosemount 848T

4.2.1 Commissioning (addressing)

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To be able to setup, configure, and have it communicate with other devices on a segment, a device must be assigned a permanent address. Unless requested otherwise, it is assigned a temporary address when shipped from the factory.

If there are two or more devices on a segment with the same address, the first device to start up will use the assigned address (ex. Address 20). Each of the other devices will be given one of the four available temporary addresses. If a temporary address is not available, the device will be unavailable until a temporary address becomes available.

Use the host system documentation to commission a device and assign a permanent address.

4.3 Hardware maintenance

The 848T has no moving parts and requires a minimal amount of scheduled maintenance. If a malfunction is suspected, check for an external cause before performing the diagnostics presented below.

4.3.1 Sensor check

To determine whether the sensor is causing the malfunction, connect a sensor calibrator or simulator locally at the transmitter. Consult an Emerson Process Management representative for additional temperature sensor and accessory assistance.

4.3.2 Communication/power check

If the transmitter does not communicate or provides an erratic output, check for adequate

voltage to the transmitter. The transmitter requiresbetween 9.0 and 32.0 VDC at the terminals to operate with complete functionality. Check for wire shorts, open circuits, and multiple grounds.

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Section 4: Operation and Maintenance

4.3.3 Resetting the configuration (RESTART)

There are two types of restarts available in the Resource Block. The following section outlines the usage for each of these. For further information, see RESTART in Table 3-2 on page 3-25.

Restart processor (cycling)

Performing a Restart Processor has the same effect as removing power from the device and reapplying power.

Restart with defaults

Performing a Restart with Defaults resets the static parameters for all of the blocks to their initial state. This is commonly used to change the configuration and/or control strategy of the device, including any custom configurations done at the Rosemount factory.

4.4 Troubleshooting

November 2014

4.4.1 FOUNDATION fieldbus

Symptom Possible cause Corrective action

Device does not show up in the live list

Device that is acting as a LAS does not send out CD

All devices go off live list and then return

Network configuration parameters are incorrect

Network address is not in polled range

Power to the device is below the 9 VDC minimum

Noise on the power / communication is too high

LAS Scheduler was not downloaded to the Backup LAS device

Live list must be reconstructed by Backup LAS device

Set the network parameters of the LAS (host system) according to the FF Communications Profile

ST: 8

MRD: 4

DLPDU PhLO: 4

MID: 7

TSC: 4 (1 ms)

T1: 96000 (3 seconds)

T2: 9600000 (300 seconds)

T3: 480000 (15 seconds)

Set first Unpolled Node and Number of UnPolled Nodes so that the device address is within range

Increase the power to at least 9V

Verify terminators and power conditioners are within specification Verify that the shield is properly terminated and not grounded at both ends. It is best to ground the shield at the power conditioner

Ensure that all of the devices that are intended to be a Backup LAS are marked to receive the LAS schedule

Current link setting and configured links settings are different. Set the current link setting equal to the configured settings.

Operation and Maintenance

Section 4: Operation and Maintenance

November 2014

4.4.2 Resource block

Symptom Possible causes Corrective action

Reference Manual

00809-0100-4697, Rev GA

Mode will not leave OOS

Block Alarms Will not work

Target mode not set Set target mode to something other than OOS.

Memory Failure

Features FEATURES_SEL does not have Alerts enabled. Enable the report bit.

Notification LIM_NOTIFY is not high enough. Set equal to MAX_NOTIFY.

BLOCK_ERR will show the lost NV Data or Lost Static Data bit set. Restart the device by setting RESTART to Processor. If the block error does not clear, call the factor y.

4.4.3 Transducer block troubleshooting

Symptom Possible causes Corrective action

Mode will not leave OOS

The primary value is BAD

Targe t mode not set Set target mode to something other than OOS.

A/D board check sum error The A/D board has a checksum error.

Resource block The actual mode of the Resource block is in OOS. See Resource

Tra nsdu cer Bloc k The actual mode of the Transducer Block is OOS. Measurement Look at the SENSOR_STATUS parameter (See Table 3-16 o n

Block Diagnostics for corrective action.

page 3-47

)

Operation and Maintenance

Reference Manual

00809-0100-4697, Rev GA

Appendix A Reference Data

Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 57

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 58

Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 60

Function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 59

Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 64

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 67

A.1 Functional specifications

A.1.1 Inputs

Eight independently configurable channels including combinations of 2- and 3-wire RTDs, thermocouples, mV, 2- and 3-wire and ohm inputs.

4–20 mA inputs using optional connector(s).

Appendix A: Reference Data

November 2014

A.1.2 Outputs

Manchester-encoded digital signal that conforms to IEC 61158 and ISA 50.02.

A.1.3 Status

 600 Vdc channel to channel isolation



10 Vdc channel to channel isolation for all operating conditions with maximum 150 m. (500 ft) of sensor lead length 18 AWG.

A.1.4 Ambient temperature limits

–40 to 185 °F (–40 to 85 °C)

A.1.5 Isolation

Isolation between all sensor channels is rated to 10Vdc over all operating conditions. No damage will occur to the device with up to 600 Vdc between any sensor channel.

A.1.6 Power supply

Powered over FOUNDATION™ fieldbus with standard fieldbus power supplies. The transmitter operates between 9.0 and 32.0 V dc, 22 mA maximum (transmitter power terminals are rated to 42.4 V dc).

A.1.7 Transient protection

(1)

The transient protector (option code T1) helps to prevent damage to the transmitter from transients induced on the loop wiring by lightning, welding, heavy electrical equipment, or switch gears. This option is installed at the factory for the Rosemount 848T and is not intended for field installation.

(1) Reference conditions are -40 to 60 °C (-40 to 140 °F) with 30 m. (100 ft) of sensor lead length 18 AWG wire.

Reference Data

Appendix A: Reference Data

November 2014

A.1.8 Update time

Approximately 1.5 seconds to read all 8 inputs.

A.1.9 Humidity limits

0–99% non-condensing relative humidity

A.1.10 Turn-on time

Performance within specifications is achieved in less than 30 seconds after power is applied to the transmitter.

A.1.11 Alarms

The AI and ISEL function blocks allow the user to configure the alarms to HI-HI, HI, LO, or LO-LO with a variety of priority levels and hysteresis settings.

A.1.12 Backup Link Active Scheduler (LAS)

The transmitter is classified as a device link master, which means it can function as a Link Active Scheduler (LAS) if the current link master device fails or is removed from the segment.

Reference Manual

00809-0100-4697, Rev GA

The host or other configuration tool is used to download the schedule for the application to the link master device. In the absence of a primary link master, the transmitter will claim the LAS and provide permanent control for the H1 segment.

FOUNDATION fieldbus parameters

Schedule Entries 20 Links 30 Virtual Communications Relationships (VCR) 20

A.2 Physical specifications

A.2.1 Mounting

The Rosemount 848T can be mounted directly onto a DIN rail or it can be ordered with an optional junction box. When using the optional junction box, the transmitter can be mounted onto a panel or a 2-in. pipe stand (with option code B6).

A.2.2 Entries for optional junction box

No entry

 Used for custom fittings

Cable Gland

 9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable

Conduit

 5 plugged 0.86-in. diameter holes suitable for installing

/2-in. NPT fittings.

Reference Data

Reference Manual

00809-0100-4697, Rev GA

Materials of construction for optional junction box

Weight

Appendix A: Reference Data

November 2014

Junction box type Paint

Aluminum Epoxy Resin Plastic NA Stainless Steel NA Aluminum Explosion-proof NA

Assembly

Rosemount 848T only 7.5 .47 .208 Aluminum Plastic Stainless Steel Aluminum Explosion-proof 557 34.8 15.5

(1) Add 35.2 oz. (2.2 lb., 0.998 kg) for nickel-plated brass glands.

(1)

A.2.3 Environmental ratings

NEMA Type 4X and IP66 with optional junction box. JX3 Explosion-proof enclosure rated to -4 °F (-20 °C).

A.3 Function blocks

A.3.1 Analog input (AI)

 Processes the measurement and makes it available on the fieldbus segment.  Allows filtering, alarming, and engineering unit changes.

Weight

oz lb kg

78.2 4.89 2.22

77.0 4.81 2.18

A.3.2 Input selector (ISEL)

 Used to select between inputs and generate an output using specific selection

strategies such as minimum, maximum, midpoint, or average temperature.

 Since the temperature value always contains the measurement status, this block allows

the selection to be restricted to the first “good” measurement.

A.3.3 Multiple analog input block (MAI)

 The MAI block allows the eight AI blocks to be multiplexed together so they serve as

one function block on the H1 segment, resulting in greater network efficiency.

Reference Data

Appendix A: Reference Data

November 2014

Reference Manual

00809-0100-4697, Rev GA

A.4 Performance specifications

A.4.1 Stability

 ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for 2 years for RTDs  ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for 1 year for thermocouples.

A.4.2 Self calibration

The transmitter’s analog-to-digital circuitry automatically self-calibrates for each temperature update by comparing the dynamic measurement to extremely stable and accurate internal reference elements.

A.4.3 Vibration effect

Transmitters are tested to high pipeline vibration specification per IEC 60770-1 1999 with no effect on performance.

A.4.4 Electromagnetic compatibility compliance testing

 Meets the criteria under IEC 61326:2006  Meets the criteria under European Union Directive 2004/108/EC

A.4.5 Accuracy

Table A-1. Input Options/Accuracy

Sensor option Sensor reference

2- and 3-Wire RTDs

Pt 50 ( = 0.00391)

Pt 100 ( = 0.00391)

Pt 100 ( = 0.00385)

Pt 100 ( = 0.003916)

Pt 200 ( = 0.00385)

Pt 200 ( = 0.003916)

Pt 500

Pt 1000

Ni 120

Cu 10

Cu 100 (a=428)

Cu 50 (a=428)

Cu 100 (a=426)

Cu 50 (a=426)

Thermocouples—Cold Junction Adds + 0.5 °C to Listed Accuracy

NIST Type B (Accuracy varies according to input range)

GOST 6651-94 –200 to 550 –328 to 1022 ± 0.57 ± 1.03 GOST 6651-94 –200 to 550 –328 to 1022 ± 0.28 ± 0.50 IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.30 ± 0.54 JIS 1604, 1981 –200 to 645 –328 to 1193 ± 0.30 ± 0.54 IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.54 ± 0.98 JIS 1604;  = 0.003916, 1981 –200 to 645 –328 to 1193 ± 0.54 ± 0.98 IEC 751;  = 0.00385, 1995 –200 to 850 –328 to 1562 ± 0.38 ± 0.68 IEC 751;  = 0.00385, 1995 –200 to 300 –328 to 572 ± 0.40 ± 0.72 Edison Curve No. 7 –70 to 300 –94 to 572 ± 0.30 ± 0.54 Edison Copper Winding No. 15 –50 to 250 –58 to 482 ± 3.20 ± 5.76 GOST 6651-94 -185 to 200 -365 to 392 ± 0.48 ±0.86 GOST 6651-94 -185 to 200 -365 to 392 ± 0.96 ±1.73 GOST 6651-94 -50 to 200 -122 to 392 ± 0.48 ±0.86 GOST 6651-94 -50 to 200 -122 to 392 ± 0.96 ±1.73

NIST Monograph 175

Input ranges

Accuracy over

range(s)

°C °F °C °F

100 to 300

301 to 1820

212 to 572

573 to 3308

± 6.00 ± 1.54

± 10.80

± 2.78

Reference Data

Reference Manual

00809-0100-4697, Rev GA

Table A-1. Input Options/Accuracy

Appendix A: Reference Data

November 2014

Sensor option Sensor reference

Input ranges

Accuracy over

range(s)

°C °F °C °F

NIST Type E

NIST Type J

NIST Type K

NIST Type N

NIST Type R

NIST Type S

NIST Type T

DIN L

DIN U

w5Re26/W26Re

GOST Type L

Terminal Temperature -50 to 85 -58 to 185 ±3.50 ± 6.30 Ohm Input 0 to 2000 ohms ± 0.90 ohms Millivolt Input -10 to 100 mV ± 0.05 mV 1000 mV -10 to 1000 mV ± 1.0 mA

(1)

(2)

4–20 mA (Rosemount) 4–20 mA (NAMUR) Multi-point Sensors

(1) Requires the S002 option code. (2) Multi-point (up to 8 points) thermocouples and RTDs are available for purchase with the Rosemount 848T. Input ranges and accuracy for these sensors will depend

on the specific multi-point sensor chosen. For more information, contact your local Emerson representative.

NIST Monograph 175 –200 to 1000 –328 to 1832 ± 0.40 ± 0.72 NIST Monograph 175 –180 to 760 –292 to 1400 ± 0.70 ± 1.26 NIST Monograph 175 –180 to 1372 –292 to 2501 ± 1.00 ± 1.80 NIST Monograph 175 –200 to 1300 –328 to 2372 ± 1.00 ± 1.80 NIST Monograph 175 0 to 1768 32 to 3214 ± 1.50 ± 2.70 NIST Monograph 175 0 to 1768 32 to 3214 ± 1.40 ± 2.52 NIST Monograph 175 –200 to 400 –328 to 752 ± 0.70 ± 1.26 DIN 43710 –200 to 900 –328 to 1652 ± 0.70 ± 1.26 DIN 43710 –200 to 600 –328 to 1112 ± 0.70 ± 1.26 ASTME 988-96 0 to 2000 32 to 3632 ± 1.60 ± 2.88 GOST R 8.585-2001 -200 to 800 -392 to 1472 ± 0.71 ± 1.28

4–20 mA ± 0.01 mA 4–20 mA ± 0.01 mA

A.4.6 Differential configuration notes

Differential capability exists between any two sensor types. For all differential configurations, the input range is X to Y where:

 X = Sensor A minimum - Sensor B max.  Y = Sensor A maximum - Sensor B min.

A.4.7 Accuracy for differential configurations

If sensor types are similar (for example, both RTDs or both thermocouples), the accuracy = 1.5 times worst case accuracy of either sensor type. If sensor types are dissimilar (for example, one RTD and one thermocouple), the accuracy = Sensor 1 Accuracy + Sensor 2 Accuracy.

A.4.8 Analog sensors 4–20mA

Two types of 4–20 mA sensors are compatible with the Rosemount 848T. These types must be ordered with the S002 option code complete with an analog connector kit. The alarm levels, accuracy for each type are listed in Ta bl e A - 2 .

Reference Data

Appendix A: Reference Data

November 2014

Table A-2. Analog Sensors

Sensor option Alarm levels Accuracy

4–20mA (Rosemount Standard) 3.9 to 20.8 mA ± 0.01mA

4–20mA (NAMUR) 3.8 to 20.5 mA ± 0.01mA

A.4.9 Ambient temperature effect

Transmitter may be installed in locations where the ambient temperature is between -40 and 85 °C (-40 and 185 °F).

A.4.10 Ambient temperature effects

Reference Manual

00809-0100-4697, Rev GA

NIST type Accuracy per 1.0 °C (1.8 °F) change in ambient temperature

RTD

Pt 50 (α = 0.00391)

Pt 100 (α = 0.00391)

Pt 100 (α = 0.00385)

Pt 100 (α = 0.003916)

Pt 200 (α = 0.003916)

Pt 200 (α = 0.00385)

Pt 500

Pt 1000

Cu 10

Cu 100 (a=428)

Cu 50 (a=428)

Cu 100 (a=426)

Cu 50 (a=426)

Ni 120

• 0.004 °C (0.0072 °F)

• 0.002 °C (0.0036 °F)

• 0.003 °C (0.0054 °F)

• 0.004 °C (0.0072 °F)

• 0.003 °C (0.0054 °F)

• 0.03 °C (0.054 °F)

• 0.002 °C (0.0036 °F)

• 0.004 °C (.0072 °F)

• 0.002 °C (0.0036 °F)

• 0.004 °C (.0072 °F)

• 0.003 °C (0.0054 °F)

(1)

°C Temperature range (°C)

N/A

Thermocouple (R = the value of the reading)

Typ e B

Typ e E

Type J, DIN Type L

Typ e K

Typ e N

• 0.014 °C

• 0.032 °C - (0.0025% of (R - 300))

• 0.054 °C - (0.011% of (R - 100))

• 0.005 °C + (0.00043% of R) •All

• 0.0054 °C + (0.00029% of R)

• 0.0054 °C + (0.0025% of |R|)

• 0.0061 °C + (0.00054% of R)

• 0.0061 °C + (0.0025% of |R|)

• 0.0068 °C + (0.00036% of R) •All

•R ≥ 1000

•300 ≤ R < 1000

•100 ≤ R < 300

•R ≥ 0

•R < 0

•R ≥ 0

•R < 0

Reference Data

Reference Manual

0.3020.03

+0.30° C=

00809-0100-4697, Rev GA

Appendix A: Reference Data

November 2014

NIST type Accuracy per 1.0 °C (1.8 °F) change in ambient temperature

Typ e R, Ty pe S

Typ e T, DIN Type U

GOST Type L

Millivolt

2- and 3-wire ohm

4–20 mA (Rosemount)

4-20 mA (NAMUR)

(1) Change in ambient is in reference to the calibration temperature of the transmitter (20 °C (68 °F) typical from the factory).

•0.016 °C

• 0.023 °C - (0.0036% of R)

• 0.0064 °C

• 0.0064 °C + (0.0043% of |R|)

•0.007 °C

• 0.007 °C + (0.003% of IRI)

• 0.0005 mV

• 0.0084 ohms

• 0.0001 mA

A.4.11 Ambient temperature notes

Examples

When using a Pt 100 (α = 0.00385) sensor input at 30 °C ambient temperature:

 Digital Temperature Effects: 0.003 °C x (30 - 20) = 0.03 °C  Worst Case Error: Digital + Digital Temperature Effects = 0.3 °C + 0.03 °C = 0.33 °C

(1)

°C Temperature range (°C)

•R ≥ 200

•R < 200

•R ≥ 0

•R < 0

•R ≥ 0

•R < 0

N/A

 Total Probable Error

Reference Data

Appendix A: Reference Data

Top View

3-D View

Side View

Security Switch

Simulation Switch

6.7

(170

3.7

(93)

1.7

(43)

Removable Wiring

Connection

Top View 3-D View

Front View

Side View

4.41 (112)

10.24 (260)

1.73 (44)

2.44 (62)

2.28 (58)

1.10 (28)

7.84 (199.2)

6.30 (160)

3.78 (96)

1.57 (40)

Ground Screw

November 2014

A.5 Dimensional drawings

Junction boxes with no entries (option codes JP1, JA1, and JS1)– external dimensions are the same as those outlined for the other junction box materials in this section.

Rosemount 848T

Reference Manual

00809-0100-4697, Rev GA

Aluminum/Plastic Junction Box—Cable Gland (Option Codes JA2 and JP2)

Dimensions are in inches (millimeters).

Reference Data

Reference Manual

Top View

3-D View

Front View

Side View

9.91 (231)

7.7 (196)

4.0 (102)

1.8 (47)

1.2 (30)

2.4 (62)

1.1 (28)

1.8 (46)

1.73 (44)

6.61 (168)

9.14 (232.2)

Ground Screw

7.72 (196)

Top view

3-D view

Front view Side view

10.2 (260)

157 (40)

2.44 (62)

3.5 (89)

1.7 (42)

10.2 (260)

Five Plugged 0.86-in. diameter holes suitable for installing

/2-in. NPT

fittings

00809-0100-4697, Rev GA

Stainless-Steel Junction Box—Cable Gland (Option Code JS2)

Appendix A: Reference Data

November 2014

Reference Data

Dimensions are in inches (millimeters)

Aluminum/Plastic Junction Box—Conduit Entry (Option Codes JA3 and JP3)

Dimensions are in inches (millimeters).

Appendix A: Reference Data

Top v iew

3-D view

Front view

Side view

9.1 (231)

7.7 (196)

2.8 (70)

1.2 (30)

1.4 (35)

1.1 (27)

2.4 (62)

1.6 (42)

0.06 (1.5)

1.8 (4.7)

4.0 (102)

Ground Screw

Five Plugged 0.86-in. diameter holes suitable for installing 1/2-in. NPT fittings

5.1

(130)

10.2

(260)

6.6 (167) fully assembled

4.5

(114)

7.5 (190) fully assembled

November 2014

Stainless-Steel Junction Box—Conduit Entry (Option Code JS3)

Reference Manual

00809-0100-4697, Rev GA

Dimensions are in inches (millimeters).

A.5.1 Mounting options

Aluminum/Plastic Junction Box

(Styles JA and JP)

Front view Side view Front view Side view

Dimensions are in inches (millimeters).

Aluminum/Plastic Junction Box

Mounted on a Vertical Pipe

Stainless-Steel Junction Box

(Style JS)

Stainless-Steel Junction Box

Mounted on a Vertical Pipe

Reference Data

Reference Manual

00809-0100-4697, Rev GA

Appendix A: Reference Data

November 2014

A.6 Ordering information

Table A-3. Rosemount 848T FOUNDATION fieldbus Ordering Information

★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery.

__The Expanded offering is subject to additional delivery lead time.

Model Product description

848T High Density Temperature Measurement Family

Transmitter o utput

F FOUNDATION fieldbus digital signal (includes AI, MAI, and ISEL function blocks, and Backup Link

Product certifications

I1 ATEX Intrinsic Safety No ★ I3 NEPSI Intrinsic Safety No ★ I4 TIIS Intrinsically Safety (FISCO) Type “ia” No ★

H4 TIIS Intrinsic Safety (FISCO) Type “ib” No ★ I5 I6

I7 IECEx Intrinsic Safety No ★ IA ATEX FISCO Intrinsic Safety No ★ IE FM FISCO Intrinsically Safe No ★

IG IECEx FISCO (Intrinsic Safety) No ★ N1 ATEX Type n (enclosure required) Yes ★ N5 FM Class I, Division 2, and Dust Ignition-proof (enclosure required) Yes ★ N6 CSA Class I, Division 2 No ★ N7 IECEx Type n (enclosure required) Yes ★

NC ATEX Type n Component (Ex nA nL) No ND ATEX Dust (enclosure required) Yes ★

NJ IECEx Type n Component (Ex nA nL) No NK FM Class 1, Division 2 No ★

NA No Approval No ★

E6 CSA Explosion-proof, Dust Ignition-proof, Division 2 (JX3 enclosure required) Ye s

Options (include with selected model number)

Input types

S001 RTD, Thermocouple, mV, ohm Inputs ★

S002

PlantWeb advanced diagnostics

D04 Measurement Validation Diagnostic ★

Transient protection

T1 Integral Transient Protector ★

Mounting bracket

B6 Mounting Bracket for 2-in. pipe mounting – SST bracket and bolts ★

Enclosure options

JP1 Plastic Junction Box; No Entries ★ JP2 Plastic Box, Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable) ★

Active Scheduler)

Rosemount

(1)

junction

box required?

(2)

FM Intrinsically Safe No ★

(2)

CSA Intrinsically Safe No ★

(2)

CSA FISCO Intrinsically Safe, Division 2 No ★

(3)

(4)

(5)

RTDs, Thermocouple, mV, ohm and 4–20 mA Inputs ★

★

Reference Data

Appendix A: Reference Data

November 2014

Reference Manual

00809-0100-4697, Rev GA

Table A-3. Rosemount 848T FOUNDATION fieldbus Ordering Information

★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery.

__The Expanded offering is subject to additional delivery lead time.

JP3 Plastic Box, Conduit Entries (5 Plugged Holes, suitable for installing 1/2-in. NPT fittings) ★ JA1 Aluminum Junction Box; No Entries ★ JA2 Aluminum Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored cable) ★ JA3 Aluminum Conduit Entries (5 Plugged Holes, suitable for installing 1/2-in. NPT fittings) ★ JS1 Stainless Steel Junction Box; No Entries ★ JS2 Stainless Steel Box, Cable Glands (9 x M20 nickel-plated brass glands for 7.5–11.9 mm unarmored

cable)

JS3 Stainless Steel Box, Conduit Entries (5 Plugged Holes, suitable for installing 1/2-in. NPT fittings) ★

(6)

JX3

Explosion-proof Box, Conduit Entries (4 Plugged Holes, suitable for installing 1/2-in. NPT fittings) ★

Software configuration

C1 Custom Configuration of Date, Descriptor, Message and Wireless Parameters (Requires CDS with

Order)

Line filter

F5 50 Hz Line Voltage Filter ★

Calibration certificate

Q4 Calibration Certificate (3-Point Calibration) ★

Shipboard certification

SBS American Bureau of Shipping (ABS) Type Approval ★

SLL Lloyd's Register (LR) Type Approval ★

Special temperature test

LT Test to -60 °F (-51.1 °C)

Conduit electrical connector

(7)

M12, 4-pin, Male Connector (eurofast®) ★

(7)

A size Mini, 4-pin, Male Connector (minifast®) ★

Typical model number: 848T F I5 S001 T1 B6 JA2

(1) Consult factory for availability. (2) Available only with S001 option. (3) The Rosemount 848T ordered with component approval is not approved as a stand-alone unit. Additional system certification is required. (4) Enclosure Option JX3 must be ordered with Product Certification Code E6. (O-ring for the JX3 enclosure rated to -20 °C). (5) S002 is only available with Product Certification N5, N6, N1, NC, NK, and NA. (6) JX3 Explosion-proof enclosure rated to -4 °F (-20 °C). (7) Available with no approval or Intrinsically Safe approvals only. For FM Intrinsically Safe (option code I5), install in accordance with Rosemount drawing 00848-4402.

★

Reference Data

Reference Manual

00809-0100-4697, Rev GA

Appendix B: Product Certifications

Appendix B Product Certificates

European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 69

Intrinsically Safe and Non-Incendive installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 81

Installation drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 82

B.1 European Directive Information

A copy of the EC Declaration of Conformity can be found at the end of the Quick Start Guide. The most recent revision of the EC Declaration of Conformity can be found at www.rosemount.com.

B.2 Ordinary Location Certification from FM

Approvals

November 2014

As standard, the transmitter has been examined and tested to determine that the design meets the basic electrical, mechanical, and fire protection requirements by FM Approvals, a nationally recognized test laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA).

B.3 Installing Equipment in North America

The US National Electrical Code (NEC) and the Canadian Electrical Code (CEC) permit the use of Division marked equipment in Zones and Zone marked equipment in Divisions. The markings must be suitable for the area classification, gas, and temperature class. This information is clearly defined in the respective codes.

B.3.1 USA

I5 FM Intrinsically Safe and Nonincendive

Certificate: 3011568 Standards: FM Class 3600:1998, FM Class 3610:2010, FM Class 3611:2004, FM Class

3810:2005, ANSI/ISA 60079-0:2009, ANSI/ISA 60079-11:2009, NEMA 250:1991, IEC 60529:2011

Markings: IS CL I, DIV 1, GP A, B, C, D; T4 (-50 °C ≤ Ta ≤ +60 °C); NI CL I, DIV 2, GP A, B, C, D;

T4A (-50 °C ≤ Ta ≤ +85 °C); T5 (-50 °C ≤ Ta ≤ +70 °C) when installed per Rosemount drawing 00848-4404

Product Certificates

Note

Transmitters marked with Nonincendive CL I, DV 2 can be installed in Division 2 locations using general Division 2 wiring methods or Nonincendive Field Wiring (NIFW). See Drawing 00848-4404.

Appendix B: Product Certifications

November 2014

IE FM FISCO

Certificate: 3011568 Standards: FM Class 3600:1998, FM Class 3610:2010, FM Class 3611:2004, FM Class

Markings: IS CL I, DIV 1, GP A, B, C, D; T4 (-50 °C ≤ Ta ≤ +60 °C); NI CL I, DIV 2, GP A, B, C, D;

N5 Nonincendive and Dust-Ignition-proof

Certificate: 3011568 Standards: FM Class 3600:1998, FM Class 3611:2004, FM Class 3810:2005, ANSI/ISA

Markings: NI CL I, DIV 2, GP A, B, C, D; DIP CL II/III, DIV 1, GP E, F, G; T4A (-50 °C ≤ Ta ≤ +85

NK Nonincendive

Certificate: 3011568 Standards: FM Class 3600:1998, FM Class 3611:2004, FM Class 3810:2005, ANSI/ISA

Markings: NI CL I, DIV 2, GP A, B, C, D; T4A (-50 °C ≤ Ta ≤ +85 °C); T5 (-50 °C ≤ Ta ≤ +70 °C)

Reference Manual

00809-0100-4697, Rev GA

3810:2005, ANSI/ISA 60079-0:2009, ANSI/ISA 60079-11:2009, NEMA 250:1991, IEC 60529:2011

T4A (-50 °C ≤ Ta ≤ +85 °C); T5 (-50 °C ≤ Ta ≤ +70 °C) when installed per Rosemount drawing 00848-4404

60079-0:2009, NEMA 250:1991, IEC 60529:2011

°C); T5 (-50 °C ≤ Ta ≤ +70 °C) when installed per Rosemount drawing 00848-4404; Type 4X

60079-0:2009, NEMA 250:1991, IEC 60529:2001

when installed per Rosemount drawing 00848-4404

Note

Only the N5 and NK are valid with the S002 option.

Table B-1. Entity Parameters

FIELDBUS (Input) FISCO (Input)

= 30 V V

max

= 300 mA I

max

Pi = 1.3 W Pi = 5.32 W Li = 0 H Po = 15 mW

Ci = 2.1 nF Ci = 2.1 nF - CA = 1.2 mF

Li = 0 H Li = 0 H - LA = 1 H

B.3.2 Canada

E6 CSA Explosion-proof, Dust-Ignition-proof, Division 2 (JX3 Enclosure Required)

Certificate: 1261865 Standards: CAN/CSA C22.2 No. 0-M91 (R2001), CSA Std. C22.2 No. 25.1966, CSA Std.

Markings: Explosion-proof for Class I, Division 1, Groups B, C, and D; T4 (-40 °C ≤ Ta ≤ +40

Nonincendive

(Input)

= 17.5 V V

max

= 380 mA Ci = 2.1 nF I

max

= 42.4 V VOC = 12.5 V

max

Sensor Field Terminal

(Output)

= 4.8 mA

C22.2 No. 30-M1986, CAN/CSA C22.2 No. 94-M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No. 60529:05

°C) when installed per Rosemount drawing 00848-1041; Dust-Ignition-proof for Class II, Division 1, Groups E, F, and G; Class III; Class I, Division 2, Groups A, B, C, and D; T3C (-50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount drawing 00848-4405; Conduit Seal Required

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

I6 CSA Intrinsically Safe and Division 2

IF CSA FISCO

Appendix B: Product Certifications

November 2014

Certificate: 1261865 Standards: CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA C22.2 No. 94-M91, CSA Std.

C22.2 No. 142-M1987, CSA Std. C22.2 No. 157-92, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No. 60529:05

Markings: Intrinsically Safe for Class I, Division 1, Groups A, B, C, and D; T3C (-50 °C ≤ Ta ≤

+60 °C) when installed per Rosemount drawing 00848-4405; Class I, Division 2, Groups A, B, C, D; T3C (-50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount drawing 00848-4405

Certificate: 1261865 Standards: CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA C22.2 No. 94-M91, CSA Std.

C22.2 No. 142-M1987, CSA Std. C22.2 No. 157-92, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No. 60529:05

Markings: Intrinsically Safe for Class I, Division 1, Groups A, B, C, and D; T3C (-50 °C ≤ Ta ≤

+60 °C) when installed per Rosemount drawing 00848-4405; Class I, Division 2, Groups A, B, C, D; T3C (-50 °C ≤ Ta ≤ +60 °C) when installed per Rosemount drawing 00848-4405

N6 CSA Division 2 and Dust-Ignition-proof (enclosure required)

Certificate: 1261865 Standards: CAN/CSA C22.2 No. 0-M91 (R2001), CSA Std. C22.2 No. 30-M1986, CAN/CSA

Markings: Class I, Division 2, Groups A, B, C, and D; T3C (-50 °C ≤ Ta ≤ +60 °C) when

B.4 Europe

I1 ATE X Intrinsic Safet y

Certificate: Baseefa09ATEX0093X Standards: EN 60079-0:2012, EN60079-11:2012 Marking II 1 G Ex ia IIC T4 Ga (-50 °C ≤ Ta ≤ +60 °C) when installed per drawing

Special Conditions for Safe Use (X):

1. The equipment must be installed in an enclosure that provides a degree of

2. The equipment is note capable of withstanding the 500V insulation test required

C22.2 No. 94-M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No. 213-M1987, CSA Std. C22.2 No. 60529:05

installed per Rosemount drawing 00848-4405; Dust-Ignition-proof for Class II, Division 1, Groups E, F, and G; Class III; Conduit Seal Required

00848-4406

protection of at least IP20. Non-metallic enclosures must be suitable to prevent electrostatic hazards and light allow or zirconium enclosures must be protected from impact and friction when installed.

by EN 60079-11:2012, clause 6.3.13. This must be taken into account when installing the equipment.

Product Certificates

Appendix B: Product Certifications

November 2014

Table B-2. ATEX Entity Parameters

Reference Manual

00809-0100-4697, Rev GA

Fieldbus (Input)

Ui = 30 V Uo = 12.5 V

Ii = 300 mA Io = 4.8 mA

Pi = 1.3 W Po = 15 mW

Ci = 2.1 nF Co = 1.2 μF

Li = 0 Lo = 1 H

Sensor Field Terminal

(Output)

IA ATEX FISCO Intrinsic Safety

Certificate: Baseefa09ATEX0093X Standards: EN 60079-0:2012, EN60079-11:2012 Marking II 1 G Ex ia IIC T4 Ga (-50 °C ≤ Ta ≤ +60 °C) when installed per drawing

00848-4406

Special Conditions for Safe Use (X):

1. The equipment must be installed in an enclosure that provides a degree of protection of at least IP20. Non-metallic enclosures must be suitable to prevent electrostatic hazards and light allow or zirconium enclosures must be protected from impact and friction when installed.

2. The equipment is note capable of withstanding the 500V insulation test required by EN 60079-11:2012, clause 6.3.13. This must be taken into account when installing the equipment.

Table B-3. ATEX FISCO Entity Parameters

Power/bus Sensor

Ui = 17.5 V Uo = 12.5 V

Ii = 380 mA Io = 4.8 mA

Pi = 5.32 W Po = 15 mW

Ci = 2.1 nF Co = 1.2 mF

Li = 0 Lo = 1 H

N1 ATEX Type n (with enclosure)

Certificate: Baseefa09ATEX0095X Standards: EN 60079-0:2006, EN60079-15:2005

Marking II 3 G Ex nA nL IIC T5 (– 40 °C ≤ T

≤ + 65 °C)

Special Conditions for Safe Use (X):

1. Provision must be made, external to the apparatus, to ensure the rated voltage of the apparatus supply is not exceeded by transient disturbances of more than 40.

2. The electrical circuit is connected directly to earth; this must be taken into account when installing the apparatus.

NC ATEX Type n (without enclosure)

Certificate: Baseefa09ATEX0094U Standards: EN 60079-0:2006, EN60079-15:2005

Marking II 3 G Ex nA nL IIC T4 (-50 °C ≤ Ta ≤ +85 °C), T5(-50 °C ≤ Ta ≤ +70 °C)

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Note

The 848T may also be installed in an external energy limited circuit as Ex nL IIC. In this case the following parameters apply

Table B-4. Baseefa Entity Parameters

Appendix B: Product Certifications

November 2014

Special Conditions for Safe Use (X):

1. The component must be installed in a suitable component certified enclosure that provides a degree of protection of at least IP54 and meets the relevant material and environmental requirements of EN 60079-0:2006 and EN 60079-15:2005.

2. Provision must be made, external to the apparatus, to ensure the rated voltage of the apparatus supply is not exceeded by transient disturbances of more than 40%.

3. The electrical circuit is connected directly to earth; this must be taken into account when installing the apparatus.

Power/Bus (Input)

Ui = 42.4 V Uo = 12.5 V

Ci = 2.1 nF Io = 2.5 mA

Li = 0 Co = 1000 mF

- Lo = 1 H

Sensor Field Terminal

(Output)

ND ATE X Dust

Certificate: BAS01ATEX1315X Standards: EN 50281-1-1:1998

Marking II 1 D T90 (-40 °C ≤ Ta ≤ +65 °C); IP66

Special Conditions for Safe Use (X):

1. The user must ensure that the maximum rated voltage and current (42.4 volts, 22 milliamp DC) are not exceeded. All connections to other apparatus or associated apparatus shall have control over this voltage and current equivalent to a category “ib” circuit according to EN 50020.

2. Component approved EEx e cable entries must be used which maintain the ingress protection of the enclosure to at least IP66.

3. Any unused cable entry holes must be filled with component approved EEx e blanking plugs.

4. The ambient temperature range of use shall be the most restrictive of the apparatus, cable gland or blanking plug.

B.5 International

I7 IECEx Intrinsic Safety

Certificate: IECEx BAS 09.0030X Standards: IEC 60079-0:2011, IEC60079-11:2011 Markings: II 1 G Ex ia IIC T4 Ga (– 50 °C ≤ T

Product Certificates

≤ + 60 °C)

Appendix B: Product Certifications

November 2014

Special Conditions of Safe Use (X):

2. The equipment is note capable of withstanding the 500V insulation test required by EN 60079-11:2012, clause 6.3.13. This must be taken into account when installing the equipment.

IG IECEx FISCO Intrinsic Safety

Certificate: IECEx BAS 09.0030X Standards: IEC 60079-0:2011, IEC60079-11:2011 Markings: II 1 G Ex ia IIC T4 Ga (-50 °C ≤ Ta ≤ +60 °C)

Special Conditions of Safe Use (X):

Reference Manual

00809-0100-4697, Rev GA

2. The equipment is note capable of withstanding the 500V insulation test required by EN 60079-11:2012, clause 6.3.13. This must be taken into account when installing the equipment.

Table B-5. IECEx Entit y Parameters

FISCO (Input)

Ui =17.5 Vdc Uo = 12.5 Vdc

Ii = 380 mA Io = 4.8 mA

Pi = 5.32 W Po = 15 mW

Ci = 2.1 nF Co = 1.2 mF

Li = 0 Lo = 1 H

Sensor Field Terminal

(Output)

N7 IECEx Type n Approval

Certificate: IECEx BAS 09.0032X Standards: IEC 60079-0:2004, IEC 60079-15:2005 Markings: Ex nA nL IIC T5(-40 °C ≤ Ta ≤ +65 °C)

Special Conditions of Safe Use:

1. Provision must be made, external to the apparatus, to ensure the rated voltage of the apparatus supply is not exceeded by transient disturbances of more than 40%.

2. The electrical circuit is connected directly to earth; this must be taken into account when installing the apparatus.

NC ATEX Type n (without enclosure)

Certificate: IECEx BAS 09.0031U Standards: IEC 60079-0:2004, IEC 60079-15:2005 Markings: Ex nA nL IIC T4 (-50°C ≤ T

≤ +85 °C), T5(-50 °C ≤ Ta ≤ +70 °C)

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Special Conditions of Safe Use:

1. The component must be installed in a suitable component certified enclosure

2. Provision must be made, external to the apparatus, to ensure the rated voltage of

3. The electrical circuit is connected directly to earth; this must be taken into

B.5.1 Brazil

I2 INMETRO Intrinsic Safety

Certificate: NCC 12.1156X Standards: ABNT NBR IEC 60079-0:2008 Versão corrigida 2011, ABNT NBR IEC

Markings: Ex ia IIC T4 (-50 °C ≤ T

Special Conditions of Safe Use:

1. The equipment must be installed in an enclosure that provides a degree of

Appendix B: Product Certifications

November 2014

that provides a degree of protection of at least IP54 and meets the relevant material and environmental requirements of EN 60079-0:2006 and EN 60079-15:2005.

the apparatus supply is not exceeded by transient disturbances of more than 40%.

account when installing the apparatus.

60079-11:2009, ABNT NBR IEC 60079-26:2008 Versão corrigida 2009, ABNT NBR IEC 60079-27:2010

≤ +60 °C)

protection of at least IP20 and which is appropriate to the application specified in ABNT NBR IEC60079-0.

2. The equipment is not capable of withstanding the dielectric strength test of 500V according to item 6.3.12 of ABNT NBR IEC60079-1, this should be

considered in the installation, see installation manual.

Tabl e B-6. INMETRO-2 Entity Pa rameters

FISCO (Input)

Ui = 30 Vdc Uo = 12.5 Vdc

Ii = 300 mA Io = 4.8 mA

Pi = 1.3 W Po = 15 mW

Ci = 2.1 nF Co = 1.2 mF

Li = 0 Lo = 1 H

Sensor Field Terminal

(Output)

IB INMETRO Intrinsic Safety

Certificate: NCC 12.1156X Standards: ABNT NBR IEC 60079-0:2008 Versão corrigida 2011, ABNT NBR IEC

60079-11:2009, ABNT NBR IEC 60079-26:2008 Versão corrigida 2009, ABNT NBR IEC 60079-27:2010

Markings: Ex ia IIC T4 (-50 °C ≤ T

≤ +60 °C)

Product Certificates

Appendix B: Product Certifications

November 2014

Special Conditions of Safe Use:

1. The equipment must be installed in an enclosure that provides a degree of protection of at least IP20 and which is appropriate to the application specified in ABNT NBR IEC60079-0.

2. The equipment is not capable of withstanding the dielectric strength test of 500V according to item 6.3.12 of ABNT NBR IEC60079-1, this should be considered in the installation, see installation manual.

Table B-7. INMETRO-B Entity Parameters

Reference Manual

00809-0100-4697, Rev GA

FISCO (Input)

Ui =17.5 Vdc Uo = 12.5 Vdc

Ii = 380 mA Io = 4.8 mA

Pi = 5.32 W Po = 15 mW

Ci = 2.1 nF Co = 1.2 mF

Li = 0 Lo = 1 H

Sensor Field Terminal

(Output)

N2 INMETRO Intrinsic Safety Zone 2

Certificate: NCC 12.1182X Standards: ABNT NBR IEC 60079-0:2008 Versao corrigida 2011, ABNT NBR IEC

60079-11:2009

Markings: Ex ic IIC T5 (-40°C ≤ T

≤ +65 °C) Gc

Special Conditions of Safe Use:

1. The equipment must be mounted within an enclosure that meets at least the degree of protection IP54, with material and manufacture covered by a quality certificate. If the enclosure is non-metallic, the enclosure must have a surface resistance less than 1 GÙ. If the enclosure is made of zirconium alloy, the enclosure must be protected against impact and friction when installed.

2. Provision must be made, external to the equipment, to ensure that the supply voltage (42.2Vdc) is not exceeded by transient disturbances of more than 40%.

3. The maximum ambient temperature will be restricted to lowest temperature

4. The electric circuit is connected directly to ground, this should be taken into

B.5.2 China

I3 NEPSI Intrinsic Safety

Certificate: GYJ111365X Standards: GB3836.1-2000, GB3836.4-2000

Markings: Ex ia IIC T4

Special Conditions for Safe Use (X):

1. Only when temperature transmitter is installed in IP 20(GB4208-2008) housing,

rating of the equipment, cables, cables glands or plugs.

account when installing the equipment.

can it be used in a hazardous location. Metallic housing should observe the requirements of GB3836.1-2000 Clause 8. Non-metallic housing should observe the requirements of GB3836.1-2000 Clause 7.3.

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Appendix B: Product Certifications

November 2014

2. This apparatus is not capable of withstanding the 500 V rms insulation test required by Clause 6.4.12 of GB3836.4-2000.

3. The ambient temperature range of the equipments is T4 (– 50 °C ≤ T

≤ + 60 °C).

4. Parameters:

Terminals of power/loop (1-2):

Maximum

Output

(FISCO)

output voltage:

(V)

F 30 300 1.3 2.1 0

17.5 380 5.32 2.1 0

Maximum

output current:

(mA)

Maximum

output power:

(mW)

Maximum external

parameters

Co (mF) Lo (H)

Note

Non-FISCO parameters listed above must be derived from a linear supply with a resistance limited output.

Terminals of sensor:

Output Te rm in als

Maximum

output

vol tag e:

(V)

Maximum

output

current:

(mA)

Maximum

output power:

(mW)

Maximum

external

parameters

Co (mF) Lo (H)

F 1-8 12.5 4.8 15 1.2 1

5. The product complies to the requirements for FISCO field devices specified in IEC60079-27: 2008. For the connection of an intrinsically safe circuit in accordance FISCO model, FISCO parameters of this product are as above.

6. The product should be used with Ex-certified associated apparatus to establish explosion protection system that can be used in explosive gas atmospheres. Wiring and terminals should comply with the instruction manual of the product and associated apparatus.

7. The cables between this product and associated apparatus should be shielded cables (the cables must have insulated shield). The shielded cable has to be grounded reliably in non-hazardous area.

8. End users are not permitted to change any component’s insides, but to settle the problem, in conjunction with manufacturer to avoid damage to the product.

9. During installation, use and maintenance of this product, observe following standards:

GB3836.13-1997 “Electrical apparatus for explosive gas atmospheres Part 13: Repair and overhaul for apparatus used in explosive gas atmospheres.”

GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres Part 15: Electrical installations in hazardous area (other than mines).”

Product Certificates

Appendix B: Product Certifications

November 2014

GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres Part 16: Inspection and maintenance of electrical installation (other than mines).”

GB50257-1996 “Code for construction and acceptance of electric device for explosion atmospheres and fire hazard electrical equipment installation”

N3 NEPSI Type n

Certificate: GYJ12.1035U Standards: GB3836.1-2010, GB3836.8-2003 Markings: Ex nA nL IIC T4/T5 Gc

Special Conditions for Safe Use (X):

1. This component is not capable of withstanding the 500V electrical strength test defined in Clause 8.1 of GB3836.8-2003. The must be taken into account during installation.

2. This component must be housed in a suitable component certified enclosure that provides a degree of protection of at least IP54 and meets the relevant material and environmental requirements of GB3836.1-2010 and GB3836.8-2003.

3. Provision must be made, external to the component, to ensure the rated voltage of the component supply is not exceeded by transient disturbances of more the 40%.

Reference Manual

00809-0100-4697, Rev GA

4. The ambient temperature range is:

T code Ambient Temperature

T4 -50 °C ≤ Ta ≤ +85 °C

T5 -50 °C ≤ Ta ≤ +70 °C

5. Maximum input voltage: 42.4V.

6. End users are not permitted to change any components inside, but to settle the problem in conjunction with manufacturer to avoid damage to the product.

7. During installation, use and maintenance of this product, observe following standards:

GB3836.13-1997 “Electrical apparatus for explosive gas atmospheres Part 13: Repair and overhaul for apparatus used in explosive gas atmospheres”

GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres Part 15: Electrical installations in hazardous area (other than mines)”

GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres Part 16: Inspection and maintenance of electrical installation (other than mines)”

GB50257-1996 “Code for construction and acceptance of electric device for explosion atmospheres and fire hazard electrical equipment installation engineering”

B.5.3 Japan

I4 TIIS FISCO Intrinsic Safety (ia)

Certificate: TC19713 Markings: IIC T4

H4 TIIS FISCO Intrinsic Safety (ib)

Certificate: TC20737 Markings: IIC T4

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

B.6 Combinations

KG Combination of I1/IA, I5/IE, I6/IF, and I7/IG

B.7 Conduit Plugs and Adapters

ATEX Flameproof and Increased Safety Certificate: FM13ATEX0076X

Standards: EN 60079-0:2012, EN 60079-1:2007, IEC 60079-7:2007 Marking 2 G Ex de IIC Gb

Special Conditions for Safe Use (X):

1. When the thread adapter or blanking plug is used with an enclosure in type of protection increased safety “e” the entry thread shall be suitably sealed in order to maintain the ingress protection rating (IP) of the enclosure.

2. The blanking plug shall not be used with an adapter.

3. Blanking Plug and Threaded Adapter shall be either NPT or Metric thread forms. G½ and PG 13.5 thread forms are only acceptable for existing (legacy) equipment installations.

Appendix B: Product Certifications

November 2014

IECEx Flameproof and Increased Safety Certificate: IECEx FMG 13.0032X

Standards: IEC 60079-0:2011, IEC 60079-1:2007, IEC 60079-7:2006-2007 Markings: Ex de IIC Gb

Special Conditions for Safe Use (X):

2. The blanking plug shall not be used with an adapter.

3. Blanking Plug and Threaded Adapter shall be either NPT or Metric thread forms. G½ and PG 13.5 thread forms are only acceptable for existing (legacy) equipment installations.

Conduit plug thread sizes:

Thread Identification Mark

M20 x 1.5 M20

½ - 14 NPT ½ NPT

G½ G½

Product Certificates

Appendix B: Product Certifications

November 2014

Thread adapter thread sizes:

Male Thread Identification Mark

M20 x 1.5 – 6H M20

½ - 14 NPT ½ - 14 NPT

¾ - 14 NPT ¾ - 14 NPT

Female Thread Identification Mark

M20 x 1.5 – 6H M20

½ - 14 NPT ½ - 14 NPT

PG 13.5 PG 13.5

B.8 Additional Certifications

SBS American Bureau of Shipping (ABS) Type Approval

Certificate: 011-HS771994C-1-PDA ABS Rules: 2013 Steel Vessels Rules 1-1-4/7.7, 1-1-Appendix 3, 4-8-3/1.7, 4-8-3/13.1

Reference Manual

00809-0100-4697, Rev GA

SBV Bureau Veritas (BV) Type Approval

Certificate: 26325/A1 BV Requirements: Bureau Veritas Rules for the Classification of Steel Ships Application: Class notations: AUT-UMS, AUT-CCS, AUT-PORT and AUT-IMS

SDN Det Norske Veritas (DNV) Type Approval

Certificate: A-13246 Intended Use: Det Norske Veritas’ Rules for Classification of Ships, High Speed & Light

Craft and Det Norske Veritas’ Offshore Standards

Applications:

Location Classes

Tem pe ra tu re D

Humidity B

Vibration A

EMC B

Enclosure B/IP66: Al

C/IP66: SST

I3 Lloyds Register (LR) Type Approval

Certificate: 11/60002 (E2) Application: Environmental categories ENV1, ENV2, ENV2 and ENV5

Product Certificates

Reference Manual

848T without

enclosure

Approved I.S. or

FISCO barrier

848T with enclosure

Non-approved

power supply

848T with enclosure

Non-approved

power supply

848T without enclosure

Approved

non-incendive

power supply

or barrier

Non-approved

power supply

848T with enclosure

Standard cable Division 2 wiring

00809-0100-4697, Rev GA

Appendix B: Product Certifications

November 2014

B.9 Intrinsically Safe and Non-Incendive installations

Approval Safe area

GAS INSTALLATIONS

I5, I6, I1, I7, IE, IA

N1, N7

Zone 2

(category 3)

Zone 1

(category 2)

Division 2 Division 1

Zone 0

(category 1)

N5, ND

DUST INSTALLATIONS

Product Certificates

Appendix B: Product Certifications

November 2014

B.10 Installation drawings

The installation guidelines presented by the drawings must be followed in order to maintain certified ratings for installed transmitters.

Rosemount Drawing 00848-4404, 3 Sheets Factory Mutual Intrinsic Safety/ FISCO Installation Drawing

Rosemount Drawing 00848-4405, 2 Sheets Canadian Standards Association Intrinsic Safety/FISCO Installation Drawing

Reference Manual

00809-0100-4697, Rev GA

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Figure B-1. FM Intrinsic Safety/ FISCO

Appendix B: Product Certifications

November 2014

Product Certificates

Appendix B: Product Certifications

November 2014

Reference Manual

00809-0100-4697, Rev GA

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Appendix B: Product Certifications

November 2014

Product Certificates

Appendix B: Product Certifications

El t i M t PRINTED COPIES ARE UNCONTROLLED RtPit

November 2014

Figure B-2. CSA Intrinsic Safety/ FISCO

Reference Manual

00809-0100-4697, Rev GA

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Appendix B: Product Certifications

November 2014

Product Certificates

Appendix B: Product Certifications

November 2014

Reference Manual

00809-0100-4697, Rev GA

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Appendix B: Product Certifications

November 2014

Product Certificates

Appendix B: Product Certifications

November 2014

Reference Manual

00809-0100-4697, Rev GA

Product Certificates

Reference Manual

00809-0100-4697, Rev GA

Appendix C: FOUNDATION Fieldbus Technology

Appendix C FOUNDATION™ fieldbus

Technology

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 89

Function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 89

Device descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 90

Block operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 91

Network communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 91

C.1 Overview

FOUNDATION fieldbus is an all-digital, serial, two-way, multi-drop communication protocol that interconnects devices such as transmitters, sensors, actuators, and valve controllers. Fieldbus is a Local Area Network (LAN) for instruments that are used in both process and manufacturing automation, having the built-in capability to distribute the control applications across the network. The fieldbus environment is the base level group of digital networks and the hierarchy of plant networks.

November 2014

The F

OUNDATION fieldbus retains the desirable features of the 4–20 mA analog system, including

standardized physical interface to the wire, bus-powered devices on a single pair of wires, and intrinsic safety options. It also enables the following capabilities:

 Increased capabilities due to full digital communication.  Reduced wiring and wire terminations due to multiple devices on one pair of wires.  Increased supplier selection due to interoperability  Reduced loading on control room equipment due to the distribution of some control

and input/output functions to field devices.

OUNDATION fieldbus devices work together to provide I/O and control for automated processes

and operations. The Fieldbus Foundation provides a framework for describing these systems as a collection of physical devices interconnected by a fieldbus network. One of the ways that the physical devices are used is to perform their portion of the total system operation by implementing one or more function blocks.

C.2 Function blocks

Function blocks perform process control functions, such as analog input (AI) and analog output (AO) functions as well as proportional-integral-derivative (PID) functions. The standard function blocks provide a common structure for defining function block inputs, outputs, control parameters, events, alarms, and modes, and combining them into a process that can be implemented within a single device or over the fieldbus network. This simplifies the identification of characteristics that are common to function blocks.

The Fieldbus Foundation has established the function blocks by defining a small set of parameters used in all function blocks called universal parameters. The F defined a standard set of function block classes, such as input, output, control, and calculation blocks. Each of these classes has a small set of parameters established for it. They have also published definitions for transducer blocks commonly used with standard function blocks. Examples include temperature, pressure, level, and flow transducer blocks.

OUNDATION has also

89FOUNDATION Fieldbus Technology

Appendix C: FOUNDATION Fieldbus Technology

Input Events Output Events

Input

Parameter

Linkages

Output Parameter Linkages

Processing

Algorithm

Execution

Control

Input

Snap

Status

Output

Snap

Status

November 2014

The Fieldbus Foundation specifications and definitions allow vendors to add their own parameters by importing and subclassing specified classes. This approach permits extending function block definitions as new requirements are discovered and as technology advances.

Figure C-1 illustrates the internal structure of a function block. When execution begins, input

parameter values from other blocks are snapped-in by the block. The input snap process ensures that these values do not change during the block execution. New values received for these parameters do not affect the snapped values and will not be used by the function block during the current execution.

Figure C-1. Function Block Internal Structure

Reference Manual

00809-0100-4697, Rev GA

Once the inputs are snapped, the algorithm operates on them, generating outputs as it progresses. Algorithm executions are controlled through the setting of contained parameters. Contained parameters are internal to function blocks and do not appear as normal input and output parameters. However, they may be accessed and modified remotely, as specified by the function block.

Input events may affect the operation of the algorithm. An execution control function regulates the receipt of input events and the generation of output events during execution of the algorithm. Upon completion of the algorithm, the data internal to the block is saved for use in the next execution, and the output data is snapped, releasing it for use by other function blocks.

A block is a tagged logical processing unit. The tag is the name of the block. System management services locate a block by its tag. Thus the service personnel need only know the tag of the block to access or change the appropriate block parameters.

Function blocks are also capable of performing short-term data collection and storage for reviewing their behavior.

C.3 Device descriptions

Device descriptions (DD) are specified tool definitions that are associated with the Resource and Transducer Blocks. Device descriptions provide the definition and description of the function blocks and their parameters.

To promote consistency of definition and understanding, descriptive information, such as data type and length, is maintained in the device description. Device Descriptions are written using

an open language called the Device Description Language (DDL). Parameter transfers between function blocks can be easily verified because all parameters are described using the same language. Once written, the device description can be stored on an external medium, such as a CD-ROM or diskette. Users can then read the device description from the external medium. The use of an open language in the device description permits interoperability of function blocks

FOUNDATION Fieldbus Technology

Rosemount 848T Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Section 1 Introduction

1.1 Safety messages

1.2 Overview

1.3 Service support

Section 2 Installation

2.1 Safety messages

2.2 Mounting

2.3 Wiring

2.4 Grounding

2.5 Switches

2.6 Tagging

2.7 Installation

Section 3 Configuration

3.1 Safety messages

3.2 Configuration

3.3 Common configurations for high density applications

3.4 Block configuration

Section 4 Operation and Maintenance

4.1 Safety messages

4.2 FOUNDATION™ fieldbus information

4.3 Hardware maintenance

4.4 Troubleshooting

Appendix A Reference Data

A.1 Functional specifications

A.2 Physical specifications

A.3 Function blocks

A.4 Performance specifications

A.5 Dimensional drawings

A.6 Ordering information

Appendix B Product Certificates

B.1 European Directive Information

B.3 Installing Equipment in North America

B.4 Europe

B.5 International

B.6 Combinations

B.7 Conduit Plugs and Adapters

B.8 Additional Certifications

B.9 Intrinsically Safe and Non-Incendive installations

B.10 Installation drawings

C.1 Overview

C.2 Function blocks

C.3 Device descriptions