Emerson Process Management 3144P User Manual

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Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P Temperature Transmitter

This product is a core component of the PlantWe digital plant architecture.

www.rosemount.com

Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P

Rosemount 3144P Temperature Transmitter

NOTICE

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

Within the United States, Rosemount Inc. has two toll-free assistance numbers:

Customer Central

Technical support, quoting, and order-related questions. 1-800-999-9307 (7:00 am to 7:00 pm CST)

North American Response Center

Equipment service needs. 1-800-654-7768 (24 hours)

International

(952)-906-8888

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 your local Emerson Process Management Sales Representative.

Rosemount 3144P Temperature Transmitter may be protected by one or more U.S. Patents Pending. Other foreign patents pending.

www.rosemount.com

Reference Manual

00809-0100-4021, Rev DA November 2004

Table of Contents

Rosemount 3144P

SECTION 1 Introduction

SECTION 2 Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Moist or Corrosive Environments . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Rosemount 3144P and Rosemount 3144 / 3244MV Differences . . . . 1-6

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Setting the Loop to Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Set the Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Typical North American Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Typical European Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

In Conjunction with a Rosemount 333 HART Tri-Loop

(HART / 4–20 mA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Multichannel Installation (HART / 4–20 mA only) . . . . . . . . . . . . . 2-10

Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

HART / 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Foundation Fieldbus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Surges/Transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

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Rosemount 3144P

Reference Manual

00809-0100-4021, Rev DA

November 2004

SECTION 3 HART Commissioning

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Updating the HART Communication Software . . . . . . . . . . . . . . . . 3-2

Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Fast Key Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Apply AMS Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Review Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Check Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Device Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Device Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Measurement Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

Use with the HART Tri-Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

Trim the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

Sensor Input Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

Transmitter-Sensor Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

D/A Output Trim or Scaled Output Trim . . . . . . . . . . . . . . . . . . . . 3-33

Output Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

Scaled Output Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

HART / 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

AMS Software (HART / 4-20 mA only) . . . . . . . . . . . . . . . . . . . . . 3-39

AMS Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41

SECTION 4 Foundation Fieldbus Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Device Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Node Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Link Active Scheduler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Block Instantiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Foundation fieldbus function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

FEATURES and FEATURES_SEL . . . . . . . . . . . . . . . . . . . . . . . . 4-5

PlantWeb

Recommended Actions for PlantWeb Alerts . . . . . . . . . . . . . . . . . 4-9

Resource Block Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Sensor Transducer Block Diagnostics . . . . . . . . . . . . . . . . . . . . . 4-10

LCD Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Custom Meter Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Self Test Procedure for the LCD . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

LCD Transducer Block Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 4-13

™

Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

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Analog Input (AI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Configure the AI block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Analog Input Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Trim the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Statistical Process Monitoring (SPM) . . . . . . . . . . . . . . . . . . . . . . 4-22

SPM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23

Troubleshooting Guides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Foundation Fieldbus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29

SECTION 5 Maintenance

SECTION 6 Certified Safety Instrumented System (SIS)

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Test Terminal (HART / 4–20 mA only) . . . . . . . . . . . . . . . . . . . . . . 5-2

Sensor Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Electronics Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

3144P SIS Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

SIS Additions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Transmitter Diagnostics Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

375 Field communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

3144P SIS Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

3144P SIS Fast Key Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Failure Rate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Product Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

SECTION 7 Prior Use (PU) Safety Instrumented System

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Safe Failure Fraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Changing Switch Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

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November 2004

APPENDIX A Reference Data

APPENDIX B Product Certifications

HART and Foundation Fieldbus Specifications . . . . . . . . . . . . . . . . . .A-1

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

HART / 4–20 mA Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6

Foundation Fieldbus Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-10

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Rosemount 3144P With HART / 4–20 mA. . . . . . . . . . . . . . . . . . . . . . B-1

Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-1

European Union Directive Information . . . . . . . . . . . . . . . . . . . . . . B-1

Hazardous Locations Installations . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Rosemount 3144P With Foundation fieldbus . . . . . . . . . . . . . . . . . . .B-6

Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-6

European Union Directive Information . . . . . . . . . . . . . . . . . . . . . . B-6

Hazardous Locations Installations . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

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Rosemount 3144P

Section 1 Introduction

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1

Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-5

Rosemount 3144P and Rosemount 3144 / 3244MV Differences page 1-6

OVERVIEW

Manual This manual is designed to assist in the installation, operation, and

maintenance of the Rosemount 3144P.

Section 1: Introduction

• Transmitter and Manual Overview

• Considerations

• Return of Material

Section 2: Installation

• Mounting

• Installation

• Wiring

• Power Supply

Section 3: HART Configuration

• 375 Field Communicator

• Configuration

• Multidrop Communication

• Calibration

• Trim the transmitter

Section 4: F

• Calibration

• Hardware Maintenance

• Diagnostic Messaging

• Trim the Transmitter

Section 5: Operation and Maintenance

• Maintenance

• Troubleshooting

OUNDATION Fieldbus Configuration

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Rosemount 3144P

Appendix A: Specifications and Reference Data

• Specifications

• Dimensional drawings

• Ordering Information

Appendix B: Approvals

• Product Certifications

• Installation Drawings

Safety Instrumented System (SIS) – HART only

• Information regarding Safety Certified transmitters

Transmitter Features of the Rosemount 3144P include:

• Accepts inputs from a wide variety of sensors

• Configuration using HART protocol or F

• Electronics that are completely encapsulated in epoxy and enclosed in a metal housing, making the transmitter extremely durable and ensuring long-term reliability

• A compact size and two housing options allowing mounting flexibility for the control room or the field

• Special dual-sensor features include Hot Backup first good, differential and average temperature measurements, and four simultaneous measurement variable outputs in addition to the analog output signal

Reference Manual

00809-0100-4021, Rev DA

November 2004

OUNDATION fieldbus

, sensor drift alarm,

Refer to the following literature for a full range of compatible connection heads, sensors, and thermowells provided by Emerson Process Management.

• Temperature Sensors and Assemblies Product Data Sheet, Volume 1 (document number 00813-0100-2654)

• Temperature Sensors and Assemblies Product Data Sheet, Metric (document number 00813-0200-2654)

CONSIDERATIONS

General Electrical temperature sensors, such as resistance temperature detectors

(RTDs) and thermocouples (T/Cs), produce low-level signals proportional to temperature. The 3144P transmitter converts low-level signals to HART or F

OUNDATION fieldbus signals. This signal is then transmitted to the control

room via two power/signal wires.

Electrical Proper electrical installation is essential to prevent errors due to sensor lead

resistance and electrical noise. The current loop must have between 250 and 1100 ohms resistance for HART communications. Refer to Figure 2-10 on page 2-11 for sensor and current loop connections. F devices must have proper termination and power conditioning for reliable operation. Shield cables must be used for F may only be grounded in one place.

OUNDATION fieldbus and the shield

OUNDATION fieldbus

1-2

Reference Manual

00809-0100-4021, Rev DA November 2004

Environmental Temperature Effects

The transmitter will operate within specifications for ambient temperatures between –40 and 185 °F (–40 and 85 °C). Heat from the process is transferred from the thermowell to the transmitter housing. If the expected process temperature is near or beyond specification limits, consider the use of additional thermowell lagging, an extension nipple, or a remote mounting configuration to isolate the transmitter from the process. Figure 1-1 describes the relationship between housing temperature rise and extension length.

Rosemount 3144P

Figure 1-1. 3144P Transmitter Housing Temperature Rise versus Extension Length for a Test Installation.

60 (108)

50 (90)

40 (72)

30 (54)

Ambient °C (°F)

Housing Temperature Rise, Above

20 (36)

10 (18)

815 °C (1500 °F) Oven Temperature

540 °C (1000 °F) Oven Temperature

250 °C (482 °F) Oven Temperature

3 4 5 6 7 8 9

3.6

Extension Length (in.)

Example:

The maximum permissible housing temperature rise (T) can be calculated by subtracting the maximum ambient temperature (A) from the transmitter’s ambient temperature specification limit (S). For instance, suppose A = 40 °C.

T = S - A

T = 85 °C – 40 °C

T = 45 °C

3044-0123A

Moist or Corrosive Environments

For a process temperature of 540 °C (1004 °F), an extension length of 3.6 inches (91.4 mm) yields a housing temperature rise (R) of 22 °C (72 °F), which provides a safety margin of 23 °C (73 °F). A six-inch extension length (R = 10 °C (50 °F)) would offer a higher safety margin (35 °C (95 °F)) and would reduce temperature-effect errors but would probably require extra transmitter support. Gauge the requirements for individual applications along this scale. If a thermowell with lagging is used, the extension length may be reduced by the length of the lagging.

The 3144P temperature transmitter has a highly reliable dual compartment housing designed to resist moisture and corrosion. The sealed electronics module is mounted in a compartment that is isolated from the terminal side conduit entries. O-ring seals protect the interior when the covers are properly installed. In humid environments, however, it is possible for moisture to accumulate in conduit lines and drain into the housing.

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00809-0100-4021, Rev DA

Rosemount 3144P

NOTE

Each transmitter is marked with a tag indicating the approvals. Install the transmitter in accordance with all applicable installation codes and approval and installation drawings (see Appendix B: Product Certifications). Verify that the operating atmosphere of the transmitter is consistent with the hazardous locations certifications. Once a device labeled with multiple approval types is installed, it should not be reinstalled using any of the other labeled approval types. To ensure this, the approval label should be permanently marked to distinguish the used from the unused approval type(s).

November 2004

Mounting Take into account the need for access to the transmitter when choosing an

installation location and position.

Terminal Side of Electronics Housing

Mount the transmitter so the terminal side is accessible. Allow adequate clearance for cover removal. Make wiring connections through the conduit openings on the bottom of the housing.

Circuit Side of Electronics Housing

Mount the transmitter so the circuit side is accessible. Provide adequate clearance for cover removal. Additional room is required for LCD installation. The transmitter may be mounted directly to or remotely from the sensor. Using optional mounting brackets, the transmitter may be mounted to a flat surface or to a two-inch diameter pipe (see “Optional Transmitter Mounting Brackets” on page A-8).

Software Compatibility Replacement transmitters may contain revised software that is not fully

compatible with the existing software. The 375 Field Communicator and AMS software containing device descriptors for the 3144 and 3244MV before December 2001 do not fully support the new features of the 3144P. The Device Descriptors (DD) are available with new communicators or can be loaded into existing communicators at any Emerson Process Management Service Center.

1-4

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00809-0100-4021, Rev DA November 2004

Rosemount 3144P

RETURN OF MATERIALS To expedite the return process in North America, call the Emerson Process

Management National Response Center (800-654-7768). This center, will assist you 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

• 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 a Emerson Process Management representative.

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.

1-5

Rosemount 3144P

Reference Manual

00809-0100-4021, Rev DA

November 2004

ROSEMOUNT 3144P AND ROSEMOUNT 3144 / 3244MV DIFFERENCES

The following table identifies the differences between the Rosemount 3144P and Rosemount 3144 and 3244MV Temperature Transmitters.

Improved Rosemount 3144P Previous Rosemount 3144 and 3244MV

Field Device Revision number 3 Standard 3144P: Dev v3, DD v2

Software Revision number 3 Software Revision number 1 Added sensor input types: DIN Type L, DIN

Type U, and extended temperature range of Type N

Uses custom-configurable alarm limits Analog output and alarm levels can be ordered

Improved 2- and 3-wire EMF compensation NA First Good Temperature is available as a

device variable 2-wire fixed lead correction is available NA Enhanced EMI rejection and filtering resulting

in unmatched stability in process measurement Dual-sensor configuration is field selectable Rosemount 3144 – single sensor

3144P SIS: Dev v1, DD v1 (for SIS)

to be NAMUR-compliant with option codes A1 and CN

Rosemount 3244MV – dual-sensor configuration

1-6

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00809-0100-4021, Rev DA November 2004

Rosemount 3144P

Section 2 Installation

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-10

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-14

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 ( ). Please refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury:

• Do not remove the transmitter cover in explosive atmospheres when the circuit is live.

• Before connecting a 375 Field Communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

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:

• Install and tighten thermowells or sensors before applying pressure, or process leakage may result.

• Do not remove the thermowell while in operation. Removing while in operation may cause process fluid leaks.

Electrical shock could cause death or serious injury. If the sensor is installed in a high-voltage environment and a fault or installation error occurs, high voltage may be present on the transmitter leads and terminals:

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

www.rosemount.com

Reference Manual

00809-0100-4021, Rev DA

Rosemount 3144P

November 2004

COMMISSIONING The 3144P must be configured for certain basic variables to operate. In many

cases, all of these variables are pre-configured at the factory. Configuration may be required if the configuration variables need to be changed.

Commissioning consists of testing the transmitter and verifying transmitter configuration data. Rosemount 3144P transmitters can be commissioned either before or after installation. Commissioning the transmitter on the bench before installation using a 375 Field Communicator or AMS ensures that all transmitter components are in working order.

For more information on using the Field Communicator with the 3144P transmitter, see “HART Commissioning” on page 3-1. For more information on using the 3144 with Foundation fieldbus, see “Foundation Fieldbus Configuration” on page 4-1.

Figure 2-1. Installation Flowchart.

START

HERE

Bench

Calibration?

Yes

BASIC SETUP

VERIFY

FIELD INSTALL

Setting the Loop to Manual

Set Units

Set Range

Values - HART

Set Sensor

Typ es

Set Number

of Wires

Set Damping

Simulate

Sensor Input

Within

Specifications?

Refer to

Section 1:

Maintenance

Yes

Set Jumpers or

Switches

Mount the

Transmitter

Wire the

Transmitter

Power the

Transmitter

Check for

Process Leaks

Done

When sending or requesting data that would disrupt the loop or change the output of the transmitter, set the process application loop to manual. The 375 Field Communicator or AMS will prompt you to set the loop to manual when necessary. Acknowledging this prompt does not set the loop to manual. The prompt is only a reminder; set the loop to manual as a separate operation.

2-2

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00809-0100-4021, Rev DA November 2004

Set the Switches HART

Without a LCD display

1. If the transmitter is installed in a loop, set the loop to manual mode and

2. Remove the housing cover on the electronics side of the transmitter.

3. Set the switches to the desired position (see Figure 2-1).

4. Replace the transmitter cover. Both transmitter covers must be fully

5. Apply power and set the loop to automatic mode.

With a LCD display

1. If the transmitter is installed in a loop, set the loop to manual mode and

2. Remove the housing cover on the electronics side of the transmitter.

3. Remove the housing cover, unscrew the LCD display screws and

4. Set the switches to the desired position (see Figure 2-1).

5. Gently slide the LCD display back into place, taking extra precautions

6. Secure the LCD display by replacing the LCD display screws.

7. Replace the transmitter cover. Both transmitter covers must be fully

8. Apply power and set the loop to automatic mode.

Rosemount 3144P

disconnect power.

Do not remove the transmitter cover in explosive atmospheres when the circuit is live.

engaged to meet explosion-proof requirements.

disconnect power.

Do not remove the transmitter cover in explosive atmospheres when the circuit is live.

gently slide the meter straight off.

of the 10 pin connection.

engaged to meet explosion-proof requirements.

Foundation Fieldbus

Without a LCD Display

1. If the transmitter is installed in a loop, set the loop to Out-of-Service (OOS) mode (if applicable) and disconnect the power.

2. Remove the electronics housing cover.

3. Set the switches to the desired position. Reattach housing cover.

4. Apply power and set the loop to In-Service mode.

With a LCD Display

1. If the transmitter is installed in a loop, set the loop to Out-of-Service (OOS) (if applicable) and disconnect the power.

2. Remove the electronics housing cover.

3. Unscrew the LCD display screws and pull the meter straight off.

4. Set the switches to the desired position.

5. Reattach the LCD display and electronics housing cover (consider LCD display orientation).

6. Apply power and set the loop to In-Service mode.

2-3

Rosemount 3144P

Table 2-1. Transmitter Switch Locations.

Reference Manual

00809-0100-4021, Rev DA

November 2004

Switch Location

Switches

Write Protect Switch (HART and F

(1)

4.4 in. (112 mm)

(1) Alarm and Write Protect (HART),

Simulate and Write Protect (F

OUNDATION Fieldbus)

4.4 in. (112 mm)

LCD Connector

The transmitter is equipped with a write-protect switch that can be positioned to prevent the accidental or deliberate change of configuration data.

Alarm Switch (HART)

The transmitter monitors itself during normal operation with an automatic diagnostic routine. If the diagnostic routine detects a sensor failure or a failure in the transmitter electronics, the transmitter goes into alarm (high or low, depending on the position of the failure mode switch).

The analog alarm and saturation values that the transmitter uses depend on whether it is configured to standard or NAMUR-compliant operation. These values are also custom-configurable in both the factory and the field using the HART Communications. The limits are

•21.0 ≤ I ≤ 23 for high alarm

• 3.5 ≤ I ≤ 3.75 for low alarm

Table 2-2. Values for standard and NAMUR operation

Standard Operation (factory default) NAMUR-Compliant Operation

Fail High 21.75 mA ≤ I ≤ 23.0 mA Fail High 21 mA ≤ I ≤ 23.0 mA High Saturation I ≥ 20.5 mA High Saturation I ≥ 20.5 mA Low Saturation I ≤ 3.90 mA Low Saturation I ≤ 3.8 mA Fail Low I ≤ 3.75 mA Fail Low I ≤ 3.6 mA

Simulate Switch (F

OUNDATION Fieldbus)

Simulate switch is used to replaces the channel value coming from the Sensor Transducer Block. For testing purposes, it manually simulates the output of the Analog Input Block to a desired value.

MOUNTING If possible, mount the transmitter at a high point in the conduit run so moisture

from the conduits will not drain into the housing. The terminal compartment could fill with water If the transmitter is mounted at a low point in the conduit run. In some instances, the installation of a poured conduit seal, such as the one pictured in Figure 2-3, is advisable. Remove the terminal compartment cover periodically and inspect the transmitter for moisture and corrosion.

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Figure 2-2. Incorrect Conduit Installation

Conduit

Lines

Rosemount 3144P

Conduit

Lines

3144-0429A, 0429B

Figure 2-3. Recommended Mounting with Drain Seal

Sealing

Compound

Union Coupling with Extension

Thermowell

Sensor Hex

Poured Conduit Seal (Where Required)

Conduit for Field Wiring

If mounting the transmitter directly to the sensor assembly, use the process shown in Figure 2-4. If mounting the transmitter apart from the sensor assembly, use conduit between the sensor and transmitter. The transmitter

accepts male conduit fittings with

(PG 11), or JIS G

/2 threads (M20 × 1.5 (CM 20), PG 13.5 (PG 11), or JIS G1/2

/2–14 NPT, M20 × 1.5 (CM 20), PG 13.5

threads are provided by an adapter). Make sure only qualified personnel perform the installation.

The transmitter may require supplementary support under high-vibration conditions, particularly if used with extensive thermowell lagging or long extension fittings. Pipe-stand mounting, using one of the optional mounting brackets, is recommended for use in high-vibration conditions.

3144-0430B

2-5

Rosemount 3144P

INSTALLATION

Reference Manual

00809-0100-4021, Rev DA

November 2004

Typical North American Installation

Figure 2-4. Typical North American Mounting Configuration.

1. Attach the thermowell to the pipe or process container wall. Install and tighten thermowells and sensors. Apply process pressure to perform a leak test.

2. Attach necessary unions, couplings, and extension fittings. Seal the fitting threads with teflon

(PTFE) tape (if required).

3. Screw the sensor into the thermowell or directly into the process (depending on installation requirements).

4. Verify all sealing requirements for severe environments or to satisfy code requirements.

5. Attach the transmitter to the thermowell/sensor assembly. Seal all threads with Teflon (PTFE) tape (if required).

6. Pull sensor leads through the extensions, unions, or couplings into the terminal side of the transmitter housing.

7. Install field wiring conduit to the remaining transmitter conduit entry.

8. Pull the field wiring leads into the terminal side of the transmitter housing.

9. Attach the sensor leads to the transmitter sensor terminals. Attach the power leads to the transmitter power terminals.

10. Attach and tighten both transmitter covers. Both transmitter covers must be fully engaged to meet explosion-proof requirements.

Union or

Thermowell

Extension

Coupling

2-6

Conduit for Field

Extension

NOTE: Dimensions are in inches (millimeters).

Fitting

Length

3.2

(81)

Wiring (dc power)

NOTE

The National Electrical Code requires that a barrier or seal be used in addition to the primary (sensor) seal to prevent process fluid from entering the electrical conduit and continuing to the control room. Professional safety assistance is recommended for installation in potentially hazardous processes.

3144-0433B

Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P

Typical European Installation

Figure 2-5. Typical European Process Mounting Configuration.

1. Mount the thermowell to the pipe or the process container wall. Install and tighten thermowells and sensors. Apply pressure and perform a leak check before starting the process.

2. Attach a connection head to the thermowell.

3. Insert the sensor into the thermowell and wire it to the connection head. The wiring diagram is located on the inside of the connection head.

4. Mount the transmitter to a 2-inch (50 mm) pipe or a suitable panel using one of the optional mounting brackets. The B4 bracket is shown in Figure 2-5.

5. Attach cable glands to the shielded cable running from the connection head to the transmitter conduit entry.

6. Run the shielded cable from the opposite conduit entry on the transmitter back to the control room.

7. Insert the shielded cable leads through the cable entries into the connection head and the transmitter. Connect and tighten the cable glands.

8. Connect the shielded cable leads to the connection head terminals (located inside of the connection head) and the sensor wiring terminals (located inside of the transmitter housing). Avoid contact with the leads and the terminals.

2-inch

Cable Gland

Pipe

B4 Mounting Bracket

Shielded Cable from

Sensor to Transmitter

Shielded Cable from Transmitter to Control Room

644-0000B05B

2-7

Rosemount 3144P

Reference Manual

00809-0100-4021, Rev DA

November 2004

In Conjunction with a Rosemount 333 HART Tri-Loop (HART / 4–20 mA only)

Figure 2-6. HART Tri-Loop Installation Flowchart

(1)

START

HERE

Use the dual-sensor option 3144P transmitter that is operating with two sensors in conjunction with a 333 HART Tri-Loop

HART-to-Analog Signal Converter to acquire an independent 4–20 mA analog output signal for each sensor input. The 3144P transmitter can be configured to output four of the six following digital process variables:

•Sensor 1

•Sensor 2

• Differential temperature

• Average temperature

• First good temperature,

• Transmitter terminal temperature.

The HART Tri-Loop reads the digital signal and outputs any or all of these variables into as many as three separate 4–20 mA analog channels.

Refer to Figure 2-6 for basic installation information. Refer to the 333 HART Tri-Loop HART-to-Analog Signal Converter Reference Manual (document number 00809-0100-4754) for complete installation information.

INSTALL THE

TRI-LOOP

COMMISSION

THE TRI-LOOP

Install the

3144P

Unpack the

Tri-Loop

Review the

Tri-Loop

Reference

Manual

3144P

Installed?

Yes

Set the 3144P

Burst

Command

Order

Set the 3144P

to Burst HART

Command 3

Review

Tri-Loop

Installation

Considerations

Mount the

Tri-Loop to a

DIN Rail

Run Wires from

3144P to Burst

Input Terminals

Install Channel

1 Wires from

Tri-Loop to

Control Room

OPTIONAL:

Install Channel

2 Wires from

Tri-Loop to

Control Room

OPTIONAL:

Install Channel

3 Wires from

Tri-Loop to

Control Room

Configure the

Tri-Loop to

Receive 3144P

Burst

Commands

Pass System

Tes t?

Yes

DONE

Refer to the

HART Tri-Loop

Reference

Manual

(1) See “Use with the HART Tri-Loop” on page 3-24 for configuration information.

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Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P

LCD Display Transmitters ordered with the LCD display option (code M5) are shipped with

the LCD display installed. After-market installation of the LCD display on a conventional 3144P transmitter requires a small instrument screwdriver and the LCD display kit, which includes:

• LCD display assembly

• Extended cover with cover O-ring in place

• Captive screws (quantity 2)

• 10-pin interconnection header

Use the following procedure to install the LCD display. Once the LCD display is installed, configure the transmitter to recognize the meter option. Refer to “LCD Meter Options” on page 3-19 (HART) or “LCD Transducer Block” on page 4-11 (F

1. If the transmitter is installed in a loop, set the loop to manual (HART) / out-of-service (F

2. Remove the housing cover from the electronics side of the transmitter. Do not remove the transmitter covers in explosive atmospheres if the circuit is live.

3. Ensure that the transmitter write protect switch is set to the Off position. If transmitter security is On, then you will not be able to configure the transmitter to recognize the LCD display. If security On is desired, first configure the transmitter for the LCD display and then install the meter.

4. Insert the interconnection header in the 10-pin socket on the face of the electronics module. Insert the pins into the electronics LCD interface.

5. Orient the meter. The meter can be rotated in 90-degree increments for easy viewing. Position one of the four 10-pin sockets on the back of the meter to accept the interconnection header.

6. Attach the LCD display assembly to the interconnection pins. Thread and tighten the LCD display screws into the holes on the electronics module.

7. Attach the extended cover; tighten at least one-third turn after the O-ring contacts the transmitter housing. Both transmitter covers must be fully engaged to meet explosion proof requirements.

8. Apply power and set the loop to automatic (HART) / in-service (F

OUNDATION fieldbus).

OUNDATION Fieldbus) mode and disconnect the power.

OUNDATION Fieldbus) mode.

NOTE

Observe the following LCD display temperature limits: Operating:–4 to 185 °F (–20 to 85 °C) Storage:–50 to 185 °F (–45 to 85 °C)

2-9

Rosemount 3144P

Reference Manual

00809-0100-4021, Rev DA

November 2004

Multichannel Installation (HART / 4–20 mA only)

You can connect several transmitters to a single master power supply (see Figure 2-7). In this case, the system may be grounded only at the negative power supply terminal. In multichannel installations where several transmitters depend on one power supply and the loss of all transmitters would cause operational problems, consider an uninterrupted power supply or a back-up battery. The diodes shown in Figure 2-7 prevent unwanted charging or discharging of the back-up battery.

Figure 2-7. Multichannel Installations.

Transmitter

No. 1

Transmitter

No. 2

Between 250 and 1100 Ω

If No Load Resistor

WIRING

HART / 4–20 mA Field Wiring

All power to the transmitter is supplied over the signal wiring. Signal wiring does not need to be shielded, but twisted pairs should be used for the best results. Do not run unshielded signal wiring in conduit or open trays with power wiring or near heavy electrical equipment. High voltage may be present on the leads and may cause electrical shock. To wire the transmitter for power, follow the steps below.

Lead

Readout or

Controller No. 1

Readout or

Controller No. 2

Battery Backup

To Additional Transmitters

Power

Supply

3044-0131A

1. Remove the transmitter covers. Do not remove the transmitter covers in an explosive atmosphere when the circuit is live.

2. Connect the positive power lead to the terminal marked “+” and the negative power lead to the terminal marked “–” as shown in Figure 2-8. Crimped lugs are recommended when wiring to screw terminals.

3. Tighten the terminal screws to ensure that good contact is made. No additional power wiring is required.

4. Replace the transmitter covers. Both transmitter covers must be fully engaged to meet explosion-proof requirements.

NOTE

Do not apply high voltage (e.g., ac line voltage) to the transmitter terminals. Abnormally high voltage can damage the unit.

2-10

Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P

Figure 2-8. Transmitter Terminal Block

Figure 2-9. HART / 4–20 mA Wiring Diagram

2-wire RTD

and Ohms

∆T/Hot Backup/Dual

Sensor with

2 RTDs

W & G

***

3-wire RTD

and Ohms**

Thermocouples

“+”

Tes t

3144P Single-Sensor Connections Diagram

4-wire RTD

and Ohms

3144P Dual-Sensor Connections Diagram

∆T/Hot

Backup/Dual

Sensor with 2

∆T/Hot

Backup/Dual

Sensor with

RTDs/

Thermocouples

Sensor with RTDs/

Sensor Terminals (1 – 5)

Ground

T/Cs and Millivolts

Backup/Dual

Thermocouples

Compensation Loop*

∆T/Hot

RTD with

∆T/Hot Backup/Dual Sensor with 2 RTDs

with Compensation

** **

Loop

* Transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop. ** Emerson Process Management provides 4-wire sensors for all single-element RTDs. You can use these RTDs in 3-wire configurations by leaving the unneeded leads disconnected and insulated with electrical tape. *** Typical wiring configuration of a Rosemount dual-element RTD is shown (R=Red, W=White, G=Green, B=Black)

2-11

Rosemount 3144P

Reference Manual

00809-0100-4021, Rev DA

November 2004

Power/Current Loop Connections

Use copper wire of a sufficient size to ensure that the voltage across the transmitter power terminals does not go below 12.0 V dc.

1. Connect the current signal leads as shown in Figure 2-10.

2. Recheck the polarity and correctness of connections.

3. Turn the power ON.

For information about multichannel installations, refer to page 2-17.

NOTE

Do not connect the power/signal wiring to the test terminal. The voltage present on the power/signal leads may burn out the reverse-polarity protection diode that is built into the test terminal. If the test terminal’s reverse polarity protection diode is burned out by the incorrect power/signal wiring, the transmitter can still be operated by jumping the current from the test terminal to the “–” terminal. See “Test Terminal” on page 4-3 for use of the terminal.

Figure 2-10. m Connecting a Communicator to a Transmitter Loop (HART/ 4–20 mA).

Power/Signal Terminals

The signal wire may be grounded at any point or left ungrounded.

250  ≤ R

or*

AMS software or a 375 Field Communicator can be connected at any termination point in the signal loop. The signal loop must have between 250 and 1100 ohms load for communications.

≤ 1100 

Power

Supply

3144-0000A04A

2-12

Reference Manual

00809-0100-4021, Rev DA November 2004

FOUNDATION Fieldbus

Rosemount 3144P

Figure 2-11. Transmitter Terminal Block

Figure 2-12. F

OUNDATION

Fieldbus Field Wiring Diagram

2-wire RTD

and Ohms

W & G

Power Terminals

3144P Single-Sensor Connections Diagram

3-wire RTD

and Ohms**

3144P Dual-Sensor Connections Diagram

4-wire RTD

and Ohms

T/Cs and Millivolts

Sensor Terminals (1 – 5)

Ground

RTD with

Compensation Loop*

∆T/Hot

Backup/Dual

Sensor with 2

RTDs

the unneeded leads disconnected and insulated with electrical tape.

*** Typical wiring configuration of a Rosemount dual-element RTD is shown (R=Red, W=White, G=Green, B=Black)

∆T/Hot Backup/Dual

Sensor with 2

Thermocouples

***

∆T/Hot

Backup/Dual

Sensor with RTDs/

Thermocouples

∆T/Hot

Backup/Dual

Sensor with RTDs/

Thermocouples

∆T/Hot Backup/Dual Sensor with 2 RTDs

with Compensation

Loop

2-13

Reference Manual

00809-0100-4021, Rev DA

Rosemount 3144P

November 2004

Sensor Connections Figure 2-9 on page 2-11 (HART) and Figure 2-12 on page 2-13 (FOUNDATION

fieldbus) shows the correct sensor wiring connections to the transmitter sensor terminals. To ensure an adequate sensor connection, anchor the sensor lead wires beneath the flat washer on the terminal screw. Do not remove the transmitter cover in explosive atmospheres if the circuit is live. Both transmitter covers must be fully engaged to meet explosion-proof requirements. Use extreme caution when making contact with the leads and terminals.

RTD or Ohm Inputs

If the transmitter is mounted remotely from a 3- or 4-wire RTD, it will operate within specifications, without recalibration, for lead wire resistances of up to 10 ohms per lead (equivalent to 1,000 feet of 20 AWG wire). In this case, the leads between the RTD and transmitter should be shielded. If using only two leads (or a compensation loop lead wire configuration), both RTD leads are in series with the sensor element, so significant errors can occur if the lead lengths exceed one foot of 20 AWG wire. For longer runs, attach a third or fourth lead as described above. To eliminate 2-wire lead resistance error, the 2-wire offset command can be used. This allows the user to input the measured lead wire resistance, resulting in the transmitter adjusting the temperature to correct the error.

Thermocouple or Millivolt Inputs

For direct-mount applications, connect the thermocouple directly to the transmitter. If mounting the transmitter remotely from the sensor, use appropriate thermocouple extension wire. Make connections for millivolt inputs with copper wire. Use shielding for long runs of wire.

NOTE

For HART transmitters, the use of two grounded thermocouples with a dual option 3144P transmitter is not recommended. For applications in which the use of two thermocouples is desired, connect either two ungrounded thermocouples, one grounded and one ungrounded thermocouple, or one dual element thermocouple.

POWER SUPPLY HART

An external power supply is required to operate the 3144P (not included). The input voltage range of the transmitter is 12 to 42.4 V DC. This is the power required across the transmitter power terminals. The power terminals are rated to 42.4 V DC. With 250 ohms of resistance in the loop, the transmitter will require a minimum of 18.1 V DC for communication.

The power supplied to the transmitter is determined by the total loop resistance and should not drop below the lift-off voltage. The lift-off voltage is the minimum supply voltage required for any given total loop resistance. See Figure 2-13 to determine the required supply voltage. If the power drops below the lift-off voltage while the transmitter is being configured, the transmitter may output incorrect information.

2-14

The dc power supply should provide power with less than 2% ripple. The total resistance load is the sum of the resistance of the signal leads and the load resistance of any controller, indicator, or related piece of equipment in the loop. Note that the resistance of intrinsic safety barriers, if used, must be included.

Reference Manual

00809-0100-4021, Rev DA November 2004

Rosemount 3144P

NOTE

Do not allow the voltage to drop below 12.0 V dc at the transmitter terminals when changing transmitter configuration parameters, or permanent damage to the transmitter could result.

Figure 2-13. Load Limits.

Maximum Load = 40.8 X (Supply Voltage - 12.0)

4–20 mA dc

Operating

Region

20 30 40 42.4

12.0

Supply Voltage (V dc)

OUNDATION fieldbus

Powered over F

OUNDATION fieldbus with standard fieldbus power supplies.

1240 1100 1000

750

500

Load (Ohms)

250

The transmitter operates between 9.0 and 32.0 V dc, 11 mA maximum. Transmitter power terminals are rated to 42.4 VDC.

The power terminals on the 3144P with F

OUNDATION fieldbus are polarity

insensitive.

Surges/Transients The transmitter will withstand electrical transients of the energy level usually

encountered in static discharges or induced switching. However, high-energy transients, such as those induced in wiring from nearby lightning strikes, can damage both the transmitter and the sensor.

To protect against high-energy transients, install the integral transient protection board (option code T1). The integral transient protection board is available as an ordered option or as an accessory. Refer to “ Transient Protection (Option Code T1)” on page A-16 for more information.

Grounding Sensor Shielding

The currents in the leads induced by electromagnetic interference can be reduced by shielding. Shielding carries the current to ground and away from the leads and electronics. If the ends of the shields are adequately grounded, little current will actually enter the transmitter.

If the ends of the shield are left ungrounded, a voltage is created between the shield and the transmitter housing and also between the shield and earth at the element end. The transmitter may not be able to compensate for this voltage, causing it to lose communication and/or go into alarm. Instead of the shield carrying the currents away from the transmitter, the currents will now flow through the sensor leads into the transmitter circuitry where they will interfere with the circuit operation.

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Shielding Recommendations

The following are recommended practices are from API Standard 552 (Transmission Standard) section 20.7 and from field and laboratory testing. If more than one recommendation is given for a sensor type, start with the first technique shown or the technique that is recommended for the facility by its installation drawings. If the technique does not eliminate the transmitter alarms, try another technique. If all techniques unsuccessfully prevent transmitter alarms due to high EMI, contact a Emerson Process Management representative.

Ungrounded Thermocouple, mV, and RTD/Ohm Inputs

Option 1: recommended for ungrounded transmitter housing

1. Connect the signal wiring shield to the sensor wiring shield.

2. Ensure the two shields are tied together and electrically isolated from the transmitter housing.

3. Ground the shield at the power supply end only.

4. Ensure the shield at the sensor is electrically isolated from the surrounding fixtures that may be grounded.

Sensor Wires

Shield ground point

Connect shields together, electrically isolated from the transmitter

Option 2: recommended for grounded transmitter housing

1. Connect the sensor wiring shield to the transmitter housing, provided the transmitter housing is grounded (see "Transmitter Housing").

2. Ensure the shield at the sensor end is electrically isolated from surrounding fixtures that may be grounded.

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

Sensor Wires

Shield ground points

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Option 3

1. Ground the sensor wiring shield at the sensor, if possible.

2. Ensure the sensor wiring and signal wiring shields are electrically isolated form the transmitter housing and other fixtures that may be grounded.

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

Sensor Wires

Shield ground points

Grounded Thermocouple Inputs

1. Ground the sensor wiring shield at the sensor.

2. Ensure the sensor wiring and signal wiring shields are electrically isolated form the transmitter housing and other fixtures that may be grounded.

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

Sensor Wires

Shield ground points

Transmitter Housing

Ground the transmitter housing in accordance with local electrical requirements. An internal ground terminal is standard. An optional external ground lug assembly (Option Code G1) can also be ordered if needed. Ordering certain hazardous approvals automatically includes an external ground lug (see Table A-5 on page A-16).

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Section 3 HART Commissioning

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2

AMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-5

Review Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . page 3-5

Check Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-6

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-6

Device Output Configuration . . . . . . . . . . . . . . . . . . . . . . . page 3-14

Device Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-18

Measurement Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-19

Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-21

Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . page 3-24

Use with the HART Tri-Loop . . . . . . . . . . . . . . . . . . . . . . . page 3-25

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-28

Trim the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-28

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-35

OVERVIEW This section contains information on commissioning and tasks that should be

performed on the bench prior to installation. This section contains 3144P HART configuration only. 375 Field Communicator and AMS instructions are given to perform configuration functions. For additional information, refer to the HART Communication Reference Manual (document number 00809-0100-4276). AMS help can be found in the AMS on-line guides within the AMS system.

HART

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that raises potential safety issues is indicated by a warning symbol ( ). Please refer to the following safety messages before performing an operation preceded by this symbol.

Explosions may result in death or serious injury.

• Do not remove the instrument cover in explosive atmospheres when the circuit is live.

• Both covers must be fully engaged to meet explosion–proof requirements.

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

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HART

375 FIELD COMMUNICATOR

Updating the HART Communication Software

The Menu Tree and Fast Key sequences use the following device revisions:

• Standard 3144P: Device Revision Dev v3, DD v2

• 3144P SIS: Device Revision Dev v2, DD v1

The 375 Field Communicator exchanges information with the transmitter from the control room, the instrument site, or any wiring termination point in the loop. To facilitate communication, connect the Field Communicator in parallel with the transmitter (see Figure 2-10). Use the loop connection ports on the top of the Field Communicator. The connections are non-polarized. Do not make connections to the NiCad recharger jack in explosive atmospheres. Before connecting the Field Communicator in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices

The 375 Field Communicator software may need to be updated to take advantage of the additional features available in the 3144P (field device revision 3). Perform the following steps to determine if an upgrade is necessary.

1. Choose “Rosemount” from the list of manufacturers and “3144 Temp” from the list of models.

2. If the Fld Dev Rev choices include “Dev v3, DD v2,” an upgrade is not required. If the only choice is “Dev v1” or “Dev v2” (with any DD version), then the communicator should be upgraded. The 3144P SIS Safety Certified transmitters requires Device Revision Dev v2, DD v1.

NOTE

If communication is initiated with an improved 3144P using a communicator that only has a previous version of the transmitter device descriptors (DDs), the communicator will display the following message:

NOTICE: Upgrade to the 375 software to access new XMTR functions. Continue with old description?

Select YES: the communicator will communicate properly with the transmitter using the existing transmitter DDs. However, new software features of the DD in the communicator will not be accessible. I Select NO: the communicator will default to a generic transmitter functionality.

If YES is selected when the transmitter is already configured to utilize the new features of the improved transmitters (such as Dual Input configuration or one of the added sensor input types–DIN Type L or DIN Type U), the user will experience trouble communicating with the transmitter and will be prompted to turn the communicator off. To prevent this from happening, either upgrade the communicator to the latest DD or answer NO to the question above and default to the generic transmitter functionality.

To see a list of enhancements included in the improved transmitters, see “Rosemount 3144P and Rosemount 3144 / 3244MV Differences” on page 1-6.

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Menu Tree Figure 3-1 displays a complete 3144P menu tree for use with the 375 Field

Communicator. Options listed in bold type indicate that a selection provides other options.

For 3144P SIS Safety Certified transmitter, see “3144P SIS Safety Certified Menu Tree” on page 6-4.

Figure 3-1. 3144P Menu Tree

Online Menu

1. DEVICE SETUP

2. PV is

3. PV

4. AO

5. % RNGE

6. PV LRV

7. PV URV

NOTE

The review menu lists all of the information stored in the 3144P. This includes device information, measuring element, output configuration, and software revision.

1. PROCESS VARIABLE

2. DIAGNOSTICS AND SERVICE

3. CONFIGURATION

4. REVIEW

1. Device Variables

2. PV is

3. PV Digital

4. PV AO

5. PV% rnge

6. PV LRV

7. PV URV

8. PV LSL

9. PV USL

10.PV Damp

1. TEST DEVICE

2. CALIBRATION

1. VARIABLE MAPPING

2. SENSOR CONFIGURATION

3. DUAL-SENSOR CONFIGURATION

4. DEV OUTPUT CONFIGURATION

5. DEVICE INFORMATION

6. MEASUREMENT FILTERING

1. Revision #s

2. Dynamic Variables

3. Device Variables

4. Sensor Variables

5. Other Variables

1. Snsr 1

2. Snsr 2

3. Terminal

4. Diff.

5. Avg

6. First Good

1. Loop Test

2. Self test

3. Master Reset

4. Status

1. SNSR TRIM

2. D/A trim

3. Scaled D/A trim

1. PV is

2. SV is

3. TV is

4. QV is

5. Variable re-map

1. Chng Type/Conn

2. Show Type/Conn

3. Sensor 1 Setup

4. Sensor 2 Setup

5. Ter m Tem p Se tup

1. Diff Config

2. Avg Config

3. First Good Config

4. Config Hot Backup

5. Drift Alert

1. PV RANGE VAL UES

2. ALARM SATURATION

3. HART OUTPUT

4. LCD DISPLAY OPTIONS

1. Tag

2. Date

3. Descriptor

4. Message

5. Final Assembly number

1. Universal rev

2. Field Dev Rev

3. Software Rev

4. Hardware

1. Review Snsr1

2. Review Snsr2

1. Microboard

2. A/D ASIC

3. Operation

4. Summary Byte

5. Sensor Information

1. Snsr inp trim

2. Snsr trim-fact

3. Active Calibrator

1. Sensor 1

2. Sensor 2

1. Snsr 2 Units

2. Snsr 2 damp

3. Snsr 2 S/N

4. Snsr 2 LSL

5. Snsr 2 USL

6. 2-Wire Offset

1. Diff Units

2. Diff Damp

3. Diff LSL

4. Diff USL

1. First Good Units

2. First Good Damp

3. First Good LSL

4. First Good USL

1. PV LRV

2. PV URV

3. PV Damping

4. PV Units

5. PV LSL

6. PV USL

7. PV Min. Span

1. AO alrm type

2. AO Levels

3. Non-PV Alarms

1. Poll addr

2. Num req preams

3. Burst mode

4. Burst option

1. Meter Configuration

2. Meter Decimal Point

3. Meter Bar Graph

1. 50/60 Hz Filter

2. Intermit Detect

3. Intermit Thresh

4. Open Sensor Holdoff

1. Review PV

2. Review SV

3. Review TV

4. Review QV

1. Snsr 1 Units

2. Snsr 1 damp

3. Snsr 1 S/N

4. Snsr 1 LSL

5. Snsr 1 USL

6. 2-Wire Offset

1. Terminal Units

2. Terminal Damp

3. Terminal LSL

4. Terminal USL

1. Avg Units

2. Avg Damp

3. Avg LSL

4. Avg USL

1. Drift Alert option

2. Drift Limit

3. Drift Damping

1. Low Alarm

2. High Alarm

3. Low Sat.

4. High Sat.

5. Preset Alarms

1. Sensor 1

2. Sensor 2

3. Ter m Tem p

4. Differential Temp

5. Average Temp

6. First Good

HART

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Fast Key Sequences Fast key sequences are listed below for common 3144P transmitter functions.

HART

NOTE:

The fast key sequences assume that “Device Revision Dev v3, DD v2 is being used. Table 3-1 provides alphabetical function lists for all Field Communicator tasks as well as their corresponding fast key sequences.

For 3144P SIS Safety Certified transmitter, see “3144P SIS Fast Key Sequences” on page 6-5.

Table 3-1. Fast Key Sequence

Function HART Fast Keys Function HART Fast Keys

Active Calibrator 1, 2, 2, 1, 3 Open Sensor Holdoff 1, 3, 6, 4 Alarm Values 1, 3, 4, 2, 1 Percent Range 1, 1, 5 Analog Output 1, 1, 4 Poll Address 1, 3, 4, 3, 1 Average Temperature Setup 1, 3, 3, 2 Process Temperature 1, 1 Average Temperature Configuration 1, 3, 3, 2 Process Variables 1, 1 Burst Mode 1, 3, 4, 3, 3 Range Values 1, 3, 4, 1 Burst Option 1, 3, 4, 3, 4 Review 1, 4 Calibration 1, 2, 2 Scaled D/A Trim 1, 2, 2, 3 Configure Hot Backup 1, 3, 3, 4 Sensor 1 Configuration 1, 3, 2, 3 Configuration 1, 3 Sensor 2 Configuration 1, 3, 2, 4 D/A Trim 1, 2, 2, 2 Sensor Limits 1, 3, 2, 2 Damping Values 1, 3, 4, 1, 3 Sensor 1 Serial Number 1, 3, 2, 3, 3 Date 1, 3, 5, 2 Sensor 2 Serial Number 1, 3, 2, 4, 3 Descriptor 1, 3, 5, 3 Sensor 1 Setup 1, 3, 2, 3 Device Information 1, 3, 5 Sensor 2 Setup 1, 3, 2, 4 Diagnostics and Service 1, 2 Sensor Trim 1, 2, 2, 1, 1 Differential Temperature Setup 1, 3, 3, 1 Sensor Type 1, 3, 2, 1 Differential Temperature Configuration 1, 3, 3, 1 Sensor 1 Unit 1, 3, 2, 3, 1 Drift Alert 1, 3, 3, 5 Sensor 2 Unit 1, 3, 2, 4, 1 Filter 50/60 Hz 1, 3, 6, 1 Software Revision 1, 4, 1 First Good Temperature Setup 1, 3, 3, 3 Status 1, 2, 1, 4 First Good Temperature Configuration 1, 3, 3, 3 Ta g 1, 3, 5, 1 Hardware Revision 1, 4, 1 Terminal Temperature Setup 1, 3, 2, 5 Hart Output 1, 3, 4, 3 Test Device 1, 2, 1 Intermittent Sensor Detect 1, 3, 6, 2 Transmitter-Sensor Matching 1, 3, 2, 1 Intermittent Threshold 1, 3, 6, 3 URV (Upper Range Value) 1, 3, 4, 1, 2 Loop Test 1, 2, 1, 1 USL (Upper Sensor Limit) 1, 3, 4, 1, 6 LRV (Lower Range Value) 1, 3, 4, 1, 1 Variable Mapping 1, 3, 1 LSL (Lower Sensor Limit) 1, 3, 4, 1, 5 Wires 1, 3, 2, 1 Master Reset 1, 2, 1, 3 2-wire Offset Sensor 1 1, 3, 2, 3, 6 Message 1, 3, 5, 4 2-wire Offset Sensor 2 1, 3, 2, 4, 6 Meter Options 1, 3, 4, 4

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AMS One of the key benefits of intelligent devices is the ease of device

configuration. When used with AMS, the 3144P is easy to configure and provides instant and accurate alerts and alarms. The main configuration screen of the 3144P is the “Configuration Properties” screen. From this screen, the transmitter set-up can easily be viewed and edited.

The screens use a color-coding to give visual indication of the transmitter health and to indicate any changes that may need to be made or written to the transmitter.

• Gray screens: indicates that all information has been written to the transmitter

• Yellow on screen: changes have been made in the software but not sent to the transmitter

• Green on screen: all current changes on screen have been written to the transmitter

• Red on screen: indicates an alarm or alert that requires immediate investigation

HART

Apply AMS Changes Changes made in the software must be sent to the transmitter in order for the

changes to take effect in the process.

1. From the bottom of the “Configuration Properties” screen, click Apply.

2. An “Apply Parameter Modification” screen appears, enter desired information and click OK.

3. After carefully reading the warning provided, select OK.

REVIEW CONFIGURATION DATA

Before operating the 3144P in an actual installation, review all of the factory-set configuration data to ensure that it reflects the current application.

Review

HART Fast Keys 1, 4

Review the transmitter configuration parameters set at the factory to ensure accuracy and compatibility with the particular application. After activating the Review function, scroll through the data list to check each variable. If changes to the transmitter configuration data are necessary, refer to “Configuration” below.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the tabs to review the transmitter configuration data.

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CHECK OUTPUT Before performing other transmitter online operations, review the

configuration of the 3144P digital output parameters to ensure that the transmitter is operating properly.

Process Variables

HART Fast Keys 1, 1

The 3144P process variables provide the transmitter output. The PROCESS VARIABLE menu displays the process variables, including sensed temperature, percent range, and analog output. These process variables are continuously updated. The primary variable is 4–20 mA analog signal.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Analog Output tab to review the transmitter Analog Output Range.

CONFIGURATION The 3144P must be configured for certain basic variables to operate. In many

cases, these variables are pre-configured at the factory. Configuration may be required if the configuration variables need revision.

Variable Mapping

HART Fast Keys 1, 3, 1

The Variable Mapping menu displays the sequence of the process variables. Select 5 Variable Re-Map to change this configuration. With the 3144P single sensor input configuration, screens follow that allow selection of the primary variable (PV) and the secondary variable (SV). When the Select PV screen appears Snsr 1 or terminal temperature must be selected.

With the 3144P dual-sensor option configuration, screens follow that allows selection of the primary variable (PV), secondary variable (SV), tertiary variable (TV), and quaternary variable (QV). Variable choices are Sensor 1,

Sensor 2, Differential Temperature, Average Temperature, First-Good Temperature, Terminal Temperature, and Not Used. The primary variable is

the 4–20 mA analog signal.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Analog Output tab to review the Mapped Variable Output.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Sensor Configuration

HART Fast Keys 1, 3, 2

Sensor configuration contains information for updating the sensor type, connections, units, and damping.

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Change Type and Connections

HART Fast Keys 1, 3, 2, 1

The Connections command allows the user to select the sensor type and the number of sensor wires to be connected. Select from the following sensor types:

• 2-, 3-, or 4-wire Pt 100, Pt 200, Pt 500, Pt 1000 platinum RTDs (α = 0.00385 Ω/Ω/°C)

• 2-, 3-, or 4-wire Pt 100 (α = 0.003916 Ω/Ω/°C)

• 2-, 3-, or 4-wire Ni 120 nickel RTDs

• 2-, 3-, or 4-wire Cu 10 RTDs

• IEC/NIST/DIN Type B, E, J, K, R, S, T thermocouples

• DIN type L, U thermocouples

• ASTM Type W5Re/W26Re thermocouple

• –10 to 100 millivolts

• 2-, 3-, or 4-wire 0 to 2000 ohms

Contact a Emerson Process Management representative for information on the temperature sensors, thermowells, and accessory mounting hardware that is available through Emerson Process Management.

HART

AMS

Right click on the device and select “Configuration.” Select “Sensor Connections,” then “Change type and connection.” The wizard will walk through the screens.

Output Units

HART Fast Keys 1, 3, 2, 3 or 4

The Snsr 1 Unit and Snsr 2 Unit commands set the desired primary variable units. Set the transmitter output to one of the following engineering units:

• Degrees Celsius

• Degrees Fahrenheit

• Degrees Rankine

•Kelvin

•Ohms

• Millivolts

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Sensor 1 (or Sensor 2) tab to configure the Sensor Output Units. Set the units to the desired output.

Apply changes made (see “Apply AMS Changes” on page 3-5).

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Sensor 1 Serial Number

HART Fast Keys 1, 3, 2, 3, 3

HART

The Sensor 1 S/N variable provides a location to list the serial number of the attached sensor. It is useful for identifying sensors and tracking sensor calibration information.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Sensor 1 tab to configure the Sensor 1 Serial #.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Sensor 2 Serial Number

HART Fast Keys 1, 3, 2, 4, 3

The Sensor 2 S/N variable provides a location to list the serial number of a second sensor.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Sensor 2 tab to configure the Sensor 2 Serial #.

Apply changes made (see “Apply AMS Changes” on page 3-5).

2-Wire RTD Offset

HART Fast Keys 1, 3, 2, 3, 6

The 2-wire Offset command allows the user to input the measured lead wire resistance, which will result in the transmitter adjusting its temperature measurement to correct the error caused by this resistance. Due to a lack of lead wire compensation within the RTD, temperature measurements made with a 2-wire RTD are often inaccurate.

To utilize this feature perform the following steps:

1. Measure the lead wire resistance of both RTD leads after installing the 2-wire RTD and the 3144P.

2. From the HOME screen, select 1 Device Setup, 3 Configuration, 2 Sensor Configuration, 3 Sensor 1 Setup, 6 2-Wire Offset.

3. Enter the total measured resistance of the two RTD leads at the 2-Wire Offset prompt. Enter this resistance as a negative (–) value to ensure proper adjustment.The transmitter then adjusts its temperature measurement to correct the error caused by lead wire resistance.

4. Repeat Steps 1 through 3 for sensor 2, selecting 1 Device Setup, 3

Configuration, 2 Sensor Configuration, 4 Sensor 2 Setup, 6 2-Wire Offset.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Sensor 1 (or Sensor 2) tab to configure the 2 Wire Offset.

Apply changes made (see “Apply AMS Changes” on page 3-5).

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Termi n a l Te m perature

HART Fast Keys 1, 3, 2, 5

The Term i n al Tem p command sets the terminal temperature units to indicate the temperature at the transmitter terminals.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Electronics tab to configure the Terminal Temperature. In the Terminal Temperature box, Set the Terminal Units to the desired output.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Dual-Sensor Configuration

HART Fast Keys 1, 3, 3

Dual-sensor configuration allows configuration of the functions that can be used with a dual-sensor configured transmitter. This includes Differential Temperature, Average Temperature, First Good Temperature, Hot Backup, and Sensor Drift Alert.

HART

Differential Temperature

HART Fast Keys 1, 3, 1, 5, 3

The 3144P configured for a dual-sensor can accept any two inputs and display the differential temperature between them. Use the following procedure to configure the transmitter to measure differential temperature.

First, configure Sensor 1 and Sensor 2 appropriately. Select 1 Device Setup, 3 Configuration, 2 Sensor Configuration, 1 Change type/conn to set the sensor type and number of wires for Sensor 1. Repeat for Sensor 2.

NOTE

This procedure reports the differential temperature as the primary variable analog signal. If this is not necessary, assign differential temperature to the secondary, tertiary, or quaternary variable.

1. From the HOME screen, select 1 Device Setup, 3 Configuration, 1 Variable Mapping, 5 Variable Re-Map to prepare to set the transmitter to display differential temperature. Set the control loop to manual and select OK.

2. Select 3Diff from the Primary Variable (PV) menu.

3. Select three of the five variables (average temperature, sensor 1, sensor 2, First-Good, and terminal temperature) for the Secondary Variable (SV), Tertiary Variable (TV), and Quaternary Variable (QV).

NOTE

The transmitter determines the differential temperature by subtracting Sensor 2 from Sensor 1 (S1 – S2). Ensure that this order of subtraction is consistent with the desired reading for the application. Refer to Figure 2-12 on page 2-16, or inside the transmitter terminal-side cover for sensor wiring diagrams.

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4. Select OK after verifying the variable settings from the variable mapping menu.

5. Select OK to return the control loop to automatic control.

6. Select HOME to return to the Online menu.

7. Select 1 Device Setup, 3 Configuration, 3 Dual-sensor configuration, 1 Differential Config, 1 Differential Units to set the desired differential units.

8. Select HOME to return to the Home screen.

If you are using a LCD display for local indication, configure the meter to read the appropriate variables using the “ LCD Display Options” on page 3-17.

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration Properties” from the menu. Select the Dual Sensor tab to configure the Differential Temperature.In the Differential Temperature box, Set the Diff Units to the desired output. Set damping if applicable.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Average Temperature

HART Fast Keys 1, 3, 1, 5, 4

The 3144P transmitter configured for dual-sensors can output and display the average temperature of any two inputs. Use the following procedure to configure the transmitter to measure the average temperature.

First, configure Sensor 1 and Sensor 2 appropriately. Select 1 Device

Setup, 3 Configuration, 2 Sensor Configuration, 1 Change Type and Conn.

to set the sensor type and number of wires for Sensor 1. Repeat for Sensor 2.

NOTE

This procedure configures the average temperature as the primary variable analog signal. If this is not necessary, assign the average temperature to the secondary, tertiary, or quaternary variable.

1. From the Home screen, select 1 Device Setup, 3 Configuration, 1 Variable Mapping, 5 Variable Re-map to set the transmitter to display the average temperature. Set the control loop to manual and select OK.

2. Select 4 Sensor Average from the Primary Variable (PV) menu.

3. Select three of the five variables (differential temperature, sensor 1, sensor 2, First-Good, and terminal temperature) for the Secondary Variable (SV), Tertiary Variable (TV), and Quaternary Variable (QV).

4. Select OK after verifying the variable settings in variable mapping menu.

5. Select OK to return the control loop to automatic control.

6. Select HOME to return to the Online menu.

7. Select 1 Device Setup, 3 Configuration, 3 dual sensor configuration, 2 average, 1 avg units to set the desired average temperature units.

8. Select HOME to return to the Home screen.

If using a LCD display, configure it to read the appropriate variables using “ LCD Display Options” on page 3-17.

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NOTE

If Sensor 1 and/or Sensor 2 should fail while PV is configured for average temperature and Hot Backup is not enabled, the transmitter will go into alarm. For this reason, when PV is Sensor Average it is recommended that Hot Backup be enabled when dual-element sensors are used or when two temperature measurements are taken from the same point in the process. If a sensor failure occurs when Hot Backup is enabled while PV is Sensor Average, three scenarios could result:

• If Sensor 1 fails, the average will only be reading from Sensor 2, the working sensor.

• If Sensor 2 fails, the average will only be reading from Sensor 1, the working sensor.

• If both sensors fail simultaneously, the transmitter will go into alarm and the status available (via HART) states that both Sensor 1 and Sensor 2 have failed.

In the first two scenarios, where Hot Backup is enabled with PV set to Sensor Average, the 4-20 mA signal is not disrupted and the status available to the control system (via HART) specifies which sensor has failed.

HART

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration Properties” from the menu. Select the Dual Sensor tab to configure the Average Temperature.In the Average Temperature box, Set the Ave Units to the desired output. Set damping if applicable.

Apply changes made (see “Apply AMS Changes” on page 3-5).

First-Good Configuration

HART Fast Keys 1, 3, 1, 5, 5

The First Good device variable is useful for applications in which dual-sensors (or a single dual element sensor) are used in a single process. The first good variable will report the Sensor 1 value, unless Sensor 1 fails. When Sensor 1 fails, the Sensor 2 value will be reported as the first good variable. Once the first good variable has switched to Sensor 2, it will not revert back to Sensor 1 until a master reset occurs or “Suspend Non-PV alarms” is disabled. When the PV is mapped to first good and either Sensor 1 or Sensor 2 fails, the analog output will go to the alarm level, but the digital PV value read through the HART interface will still report the proper first good sensor value.

If it is desired that the transmitter not go into analog output alarm while having the PV mapped to first good and Sensor 1 fails, enable “Suspend Non-PV Alarm” mode. This combination will prevent the analog output from going to the alarm level unless BOTH sensors fail.

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration Properties” from the menu. Select the Dual Sensor tab to configure the 1st Good. In the 1st Good box, set the 1st Good Units to the desired output. Set damping if applicable.

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Apply changes made (see “Apply AMS Changes” on page 3-5).

Hot Backup Configuration

HART Fast Keys 1, 3, 3, 4

The Config Hot BU command configures the transmitter to automatically use Sensor 2 as the primary sensor if Sensor 1 fails. With Hot Backup enabled, the primary variable (PV) must either be First Good or Sensor Average (see “Average Temperature” on page 3-10 for details on using Hot Backup when PV is Sensor Average). You can map Sensors 1 or 2 as the secondary variable (SV), tertiary variable (TV), or quaternary variable (QV). In the event of a primary variable (Sensor 1) failure, the transmitter enters Hot Backup mode and Sensor 2 becomes the PV. The 4–20 mA signal is not disrupted and a status is available to the control system (via HART) that Sensor 1 has failed. An LCD display, if attached, also displays the failed sensor status.

While configured to Hot Backup, if Sensor 2 fails while Sensor 1 is still operating properly, the transmitter continues to report the PV 4–20 mA analog output signal while a status is available to the control system (via HART) that Sensor 2 has failed. In Hot Backup mode, the transmitter will not revert back to Sensor 1 to control the 4–20 mA analog output until the Hot Backup mode is reset. Reset Hot Backup either by re-enabling via HART or by briefly powering down the transmitter.

To set up and enable the Hot Backup feature for the 3144P transmitter, perform the following procedure:

1. Attach any two sensors to the transmitter as shown in Figure 2-12 on page 2-16.

2. From the Home screen, select 1 Device Setup, 3 Configuration, 1 Variable Mapping, 5 Variable Re-map to set primary, secondary, tertiary, and quaternary variables. The communicator displays the PV, SV, TV, and QV menus in succession.

3. Set PV as First Good or Sensor Average; set secondary, tertiary, and quaternary variables as desired.

4. Select OK after verifying the variable settings from the Variable Mapping menu.

5. Select OK to return the control loop to automatic control. Select HOME to return to the Home screen.

6. From the Home screen, select 1 Device Setup, 3 Configuration, 2 Sensor Configuration, 1 Change Type and Conn, 3 Sensor 1 Setup to configure Sensor 1.

7. Set the sensor type, number of wires, damping, and units for Sensor 1.

8. Select SEND to download the new data to the transmitter. Select HOME to return to the Home screen.

9. Repeat Steps 5, 6, and 7 for Sensor 2 using 4 Sensor 2 Setup.

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10. From the Home screen, select 1 Device Setup, 3 Configuration, 3 Dual Sensor Configuration, 4 Configure Hot Backup to prepare to configure

the transmitter for Hot Backup.

11. Select yes to enable Hot Backup.

12. Select OK after you set the control loop to manual.

13. Select 1 Average or 2 First Good to set Hot Backup PV.

14. Select OK after you return the control loop to automatic control.

For information on using Hot Backup in conjunction with the HART Tri-Loop see “Use with the HART Tri-Loop” on page 3-25.

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration.” Select “Configure Hot Backup.” The wizard will walk through the screens.

Drift Alert Configuration

HART Fast Keys 1, 3, 3, 5

HART

The Drift Alert command allows the user to configure the transmitter to set a warning flag (via HART) or go into analog alarm when the temperature difference between Sensor 1 and Sensor 2 exceeds a user-defined limit. This feature is useful when measuring the same process temperature with two sensors, ideally when using a dual-element sensor. When Drift Alert mode is enabled, the user will set the maximum allowable difference, in engineering units, between Sensor 1 and Sensor 2. If this maximum difference is exceeded, a drift alert warning flag will be set.

When configuring the transmitter for Drift Alert the user also has the option of specifying that the analog output of the transmitter go into alarm when sensor drifting is detected.

NOTE

For the standard HART product, the Drift Alert alarm cannot be enabled while Hot Backup is enabled. The safety certified transmitter will allow Drift Alert Alarm and Hot Backup configured simultaneously. If one sensor fails the transmitter will switch to the other sensor. If the maximum allowable difference is exceeded the AO will go to alarm with the senor drift detected. This is considered 1oo2d (one-out-of-two diagnostics) for safety applications. The Drift Alert warning, however, can be used simultaneously with Hot Backup. For information on configuring the transmitter for Hot Backup see page 3-12.

To set up and enable the Drift Alert feature of the 3144P, perform the following procedure:

1. Attach any two sensors to the transmitter as shown in Figure 2-12 on page 2-16.

3. Select primary, secondary, tertiary, and quaternary variables as desired.

4. Select OK after verifying the variable settings from the Variable Mapping menu.

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5. Select OK to return the control loop to automatic control. Select HOME to return to the Home screen.

6. From the Home screen, select 1 Device Setup, 3 Configuration, 2 Sensor Configuration, 1 Change Type and Conn, 3 Sensor 1 Setup to configure Sensor 1.

7. Set the sensor type, number of wires, damping, and units for Sensor 1.

8. Select SEND to download the new data to the transmitter. Select HOME to return to the Home screen.

9. Repeat steps 6 – 8 for Sensor 2 using 4 Sensor 2 setup.

10. From the Home screen select 1 Device Setup, 3 Configuration, 3 Dual-Sensor Configuration, 5 Drift Alert to prepare to configure the transmitter for Drift Alert.

11. Select 2 Drift Limit. Enter the maximum acceptable difference between Sensor 1 and Sensor 2.

12. Select 3Drift Damping to enter a drift alert damping value. This value must be between 0 and 32 seconds.

13. Select 1 Drift Alert Option and select Enable Alarm or Warning only.

14. Select SEND to download the alarm setting to the transmitters.

DEVICE OUTPUT CONFIGURATION

NOTE

Enabling Drift Alert Option Warning only (Step 13) will set a flag (via HART) whenever the maximum acceptable difference between Sensor 1 and Sensor 2 has been exceeded. If it is desired for the transmitter’s analog signal to go into alarm when Drift Alert is detected, select Alarm in Step 13.

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration Properties” from the menu. Select the Dual Sensor tab to configure the Sensor Drift Alarm. In the Drift Alert box, enable the Drift Alert Option. Enter the DrftLm limit and define the Drift Limit Units. Set damping if applicable.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Device output configuration contains PV range values, alarm and saturation, HART output, and LCD display options.

PV Range Values

HART Fast Keys 1, 3, 4, 1

The PV URV and PV LRV commands, found in the PV Range Values menu screen, allow the user to set the transmitter’s lower and upper range values using limits of expected readings. See Table A-2 on page A-5 for unit and range setting limits. The range of expected readings is defined by the Lower Range Value (LRV) and Upper Range Value (URV). The transmitter range values may be reset as often as necessary to reflect changing process conditions. From the PV Range Values screen select 1 PV LRV to change the lower range value and 2 PV URV to change the upper range value.

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Reranging the transmitter sets the measurement range to the limits of the expected readings. Setting the measurement range to these limits maximizes transmitter performance; the transmitter is most accurate when operated within the expected temperature range for the application.

The rerange functions should not be confused with the trim function. Although reranging the transmitter matches a sensor input to a 4-20 mA output, as in conventional calibration, it does not affect the transmitter’s interpretation of the input.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Analog Output tab to define the upper and lower range values. From the Analog Input Range box, enter the URV and LRV.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Process Variable Damping

HART Fast Keys 1, 3, 4, 1, 3

The PV Damp command changes the response time of the transmitter to smooth variations in output readings caused by rapid changes in input. Determine the appropriate damping setting based on the necessary response time, signal stability, and other requirements of the loop dynamics of the system. The default damping value is 5.0 seconds and can be reset to any value between 0 and 32 seconds.

The value chosen for damping affects the response time of the transmitter. When set to zero (i.e., disabled), the damping function is off and the transmitter output reacts to changes in input as quickly as the intermittent sensor algorithm allows. Increasing the damping value increases transmitter response time.

HART

When damping is enabled, the transmitter will output a value at time (t) according to the following equation:

Output

= Input

(t)

(ts)

– De

(–t/damping)

D = input step change at time t = 0

At the time to which the damping time constant is set, the transmitter output is at 63 percent of the input change; it continues to approach the input according to the damping equation above.

For example, as illustrated in Figure 3-2, if the temperature undergoes a step change—from 100 degrees to 110 degrees, and the damping is set to 5.0 seconds, at 5.0 seconds, the transmitter outputs 106.3 degrees, or 63 percent of the input change, and the output continues to approach the input curve according to the equation above.

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HART

109.0

Rosemount 3144P

Figure 3-2. Change in Input versus Change in Output with Damping Enabled.

108.0

107.0

106.0

105.0

104.0

Temperature

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102.0

101.0

100.0

0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.510.

Time (Seconds)

Input Va lu e

Output Value

AMS

Right click on the device and select “Configuration Properties” from the menu. If Sensor 1 is mapped as your primary variable, select the Sensor 1 tab.

• Snr1 damp Apply changes made (see “Apply AMS Changes” on page 3-5).

Alarm and Saturation

HART Fast Keys 1, 3, 4, 2

The Alarm/Saturation command allows the user to view the alarm settings (Hi or Low). With this command it is also possible to change the alarm and saturation values. To change the alarm values and saturation values, select the value to be changed, either 1 Low Alarm, 2 High Alarm, 3 Low Sat., 4 High Sat, or 5 Preset Alarms. Enter the desired new value. It must fall within the guidelines given below.

• The low alarm value must be between 3.50 and 3.75 mA

• The high alarm value must be between 21.0 and 23.0 mA

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The low saturation level must be between the low alarm value plus 0.1 mA and 3.9 mA for the standard HART transmitter. For the safety certified transmitter the lowest saturation setting is 3.7 mA and the highest is 20.9 mA.

Example:

The low alarm value has been set to 3.7 mA. Therefore, the low

saturation level, S, must be as follows:

3.8 ≤ S ≤ 3.9 mA.

The high saturation level must be between 20.5 mA and the high alarm value minus 0.1 mA for the standard HART transmitter. The highest saturation setting for the Safety Certified transmitter is 20.9 mA.

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Example: The high alarm value has been set to 20.8 mA. Therefore, the low saturation level, S, must be as follows:

20.5 ≤ S ≤ 20.7 mA.

Preset alarms can either be 1 Rosemount or 2 NAMUR-compliant. Use the failure mode switch on the front side of the electronics (see “Switch Location” on page A-7) to set whether the output will be driven to high or low alarm in the case of failure.

AMS

For AMS, configure each sensor as indicated above.

Right click on the device and select “Configuration Properties” from the menu. Select the Analog Output tab to define the alarm and saturation levels. From the Alarm box, enter the low and high alarm and the low and high saturation.

Apply changes made (see “Apply AMS Changes” on page 3-5).

To preset to Rosemount standard or NAMUR NE43 compliant levels:

Right-click on the device and select “Configuration.” Select “Alarm Configuration” then select “Alarm Configuration” then “Preset alarm levels.” The wizard will walk through the configuration.

HART

HART Output

HART Fast Keys 1, 3, 4, 3

The HART Output command allows the user to make changes to the multidrop address, initiate burst mode, or make changes to the burst options.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the HART tab to configure for multidrop and Burst Mode.

Apply changes made (see “Apply AMS Changes” on page 3-5).

LCD Display Options

HART Fast Keys 1, 3, 4, 4

The LCD Display Option command sets the meter options, including engineering units and decimal point. Change the LCD display settings to reflect necessary configuration parameters when adding a LCD display or reconfiguring the transmitter. Transmitters without LCD displays are shipped with the meter configuration set to “Not Used.”

To customize variables that the LCD display displays, follow the steps below:

1. From the home screen select 1 Device Setup, 3 Configuration, 4Dev Output Config, 4 LCD Display Options, and 1 Meter Config.

2. Select the appropriate variable configuration from the Meter Configuration screen.

3. Press F4, ENTER, and then F2, SEND, to send the information to the transmitter. The LCD display will scroll through the outputs selected in step 2.

To change the decimal point configuration, perform the following steps:

1. From the home screen select 1 Device Setup, 3 Configuration, 4Dev Output Config, 4 LCD Display Options, and 2 Meter Decimal Pt.

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2. Choose from Floating Precision or One-, Two-, Three-, or Four-Digit Precision by pressing F4, ENTER. Press F2 to send the information to

the transmitter.

To change the meter bar graph, perform the following steps:

1. From the home screen, select 1 Device Setup, 3 Configuration, 4 Dev

Output Configuration, 4 LCD Display options, 3 Meter bar graph.

2. Choose from Bar Graph offer, Bar graph on by pressing F4, Enter. Press F2 to send the information to the transmitter.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Device tab to configure the LCD. From the LCD Display box, define the Meter Config, Meter Decimal Pt, and Meter Bar Graph.

Apply changes made (see “Apply AMS Changes” on page 3-5).

November 2004

DEVICE INFORMATION Access the transmitter information variables online using the Field

Communicator or other suitable communications device. The following is a list of transmitter information variables. These variables include device identifiers, factory-set configuration variables, and other information. A description of each variable, the corresponding fast key sequence, and a review of its purposes are provided.

Tag

HART Fast Keys 1, 3, 5, 1

The Tag variable is the easiest way to identify and distinguish between transmitters in multi-transmitter environments. Use it to label transmitters electronically according to the requirements of the application. The defined tag is automatically displayed when a HART-based communicator establishes contact with the transmitter at power-up. The tag may be up to eight characters long and has no impact on the primary variable readings of the transmitter.

Date

HART Fast Keys 1, 3, 5, 2

The Date command is a user-defined variable that provides a place to save the date of the last revision of configuration information. It has no impact on the operation of the transmitter or the HART-based communicator.

Descriptor

HART Fast Keys 1, 3, 5, 3

The Descriptor variable provides a longer user-defined electronic label to assist with more specific transmitter identification than is available with the tag variable. The descriptor may be up to 16 characters long and has no impact on the operation of the transmitter or the HART-based communicator.

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Message

HART Fast Keys 1, 3, 5, 4

The Message variable provides the most specific user-defined means for identifying individual transmitters in multi-transmitter environments. It allows for 32 characters of information and is stored with the other configuration data. The message variable has no impact on the operation of the transmitter or the HART-based communicator.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Device tab to enter alphanumeric device information.

Apply changes made (see “Apply AMS Changes” on page 3-5).

HART

MEASUREMENT FILTERING

50/60 Hz Filter

HART Fast Keys 1, 3, 6, 1

The 50/60 Hz Filter command sets the transmitter electronic filter to reject the frequency of the ac power supply in the plant. The 60 Hz normal, 50 Hz normal, 60 Hz fast, and 50 Hz fast modes can be chosen (normal mode is the default mode). On software release 5.3.4, the fast mode cannot be enabled. If fast mode is selected it will display the normal mode.

NOTE

In high noise environments, normal mode is recommended.

Master Reset

HART Fast Keys 1, 2, 1, 3

Master Reset resets the electronics without actually powering down the unit. It does not return the transmitter to the original factory configuration.

AMS

Right click on the device and select “Diagnostics and Calibration” from the menu. Choose “test,” then “Master Reset.”

The wizard will perform the reset

Intermittent Sensor Detect

HART Fast Keys 1, 3, 6, 2

The following steps indicate how to turn the Intermittent Sensor Detect feature ON or OFF. When the transmitter is connected to a Field Communicator, use the fast key sequence and choose ON or OFF (ON is the normal setting).

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Electronics tab. From the Measurement Filtering Box, configure the Intermit detect.

The wizard will perform the reset

Apply changes made (see “Apply AMS Changes” on page 3-5).

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Intermittent Threshold

HART Fast Keys 1, 3, 6, 3

HART

Figure 3-3. Open Sensor Response

The threshold value can be changed from the default value of 0.2%. Turning the Intermittent Sensor Detect feature OFF or leaving it ON and increasing the threshold value above the default does not affect the time needed for the transmitter to output the correct alarm signal after detecting a true open sensor condition. However, the transmitter may briefly output a false temperature reading for up to one update in either direction (see Figure 3-4 on page 3-24) up to the threshold value (100% of sensor limits if Intermittent Sensor Detect is OFF). Unless rapid response rate is necessary, the suggested setting of the Intermittent Sensor Detect mechanism is ON with

0.2% threshold.

Transmitter Output (mA)

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Normal open sensor responses

When Intermittent Sensor Detect is OFF, a false temperature output is possible when an open sensor condition is detected. A false temperature output in either direction up to the threshold value (100 % of sensor limits if Intermittent Sensor Detect is OFF) is possible when an open sensor condition is detected.

Time (seconds)

High Alarm

644-644_03

Intermittent Sensor Detect (Advanced Feature)

The Intermittent Sensor Detect feature is designed to guard against process temperature readings caused by intermittent open sensor conditions (an intermittent sensor condition is an open sensor condition that lasts less than one update). By default, the transmitter is shipped with the Intermittent Sensor Detect feature switched ON and the threshold value set at 0.2% of sensor limits. The Intermittent Sensor Detect feature can be switched ON or OFF and the threshold value can be changed to any value between 0 and 100% of the sensor limits with a Field Communicator.

Transmitter Behavior with Intermittent Sensor Detect ON

When the Intermittent Sensor Detect feature is switched ON, the transmitter can eliminate the output pulse caused by intermittent open sensor conditions. Process temperature changes (∆T) within the threshold value will be tracked normally by the transmitter’s output. A ∆T greater than the threshold value will activate the intermittent sensor algorithm. True open sensor conditions will cause the transmitter to go into alarm.

The threshold value of the 3144P should be set at a level that allows the normal range of process temperature fluctuations; too high and the algorithm will not be able to filter out intermittent conditions; too low and the algorithm will be activated unnecessarily. The default threshold value is 0.2% of the sensor limits.

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Transmitter Behavior with Intermittent Sensor Detect OFF

When the Intermittent Sensor Detect feature is switched OFF, the transmitter tracks all process temperature changes, even if they are the consequence of an intermittent sensor. (The transmitter in effect behaves as though the threshold value had been set at 100%.) The output delay due to the intermittent sensor algorithm will be eliminated.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Electronics tab. From the Measurement Filtering Box, configure the Intermit threshold.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Open Sensor Holdoff

HART Fast Keys 1, 3, 6, 4

The Open Sensor Holdoff option, at the normal setting, enables the 3144P to be more robust under heavy EMI conditions. This is accomplished through the software by having the transmitter perform additional verification of the open sensor status prior to activating the transmitter alarm. If the additional verification shows that the open sensor condition is not valid, the transmitter will not go into alarm.

HART

DIAGNOSTICS AND SERVICE

For users of the 3144P that desire a more vigorous open sensor detection, the Open Sensor Holdoff option can be changed to a fast setting. With this setting, the transmitter will report an open sensor condition without additional verification of the open condition.

AMS

Right click on the device and select “Configuration Properties” from the menu. Select the Electronics tab. From the Measurement Filtering Box box, configure the Open Snsr Holdoff.

Apply changes made (see “Apply AMS Changes” on page 3-5).

Test Device

HART Fast Keys 1, 2, 1

The Test Device command initiates a more extensive diagnostics routine than that performed continuously by the transmitter. The Test Device menu lists the following options:

• 1 Loop test verifies the output of the transmitter, the integrity of the loop, and the operations of any recorders or similar devices installed in the loop. The ability to simulate an alarm is also available. See “Loop Test” below for more information.

• 2 Self Test initiates a transmitter self test. Error codes are displayed if there is a problem.

• 3 Master Reset sends out a command that restarts and tests the transmitter. A master reset is like briefly powering down the transmitter. Configuration data remains unchanged after a master reset.

• 4 Status lists error codes. ON indicates a problem, and OFF means there are no problems.

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AMS

Right click and select “Diagnostics and Calibration.” Choose “Test” and select “loop test,” “self test,” or “master reset.” Right-click on device and choose “status” to view errors.

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Loop Test

HART Fast Keys 1, 2, 1, 1

The Loop Test command verifies the output of the transmitter, the integrity of the loop, and the operations of any recorders or similar devices installed in the loop. To initiate a loop test, perform the following procedure:

1. Connect an external ampere meter to the transmitter. To do so, shunt the power to the transmitter through the meter at some point in the loop.

2. From the HOME screen, select 1 Device Setup, 2 Diag/Serv, 1 Test Device, 1 Loop Test before performing a loop test. Select OK after you set the control loop to manual. The communicator displays the loop test menu.

3. Select a discreet milliampere level for the transmitter to output. At the

CHOOSE ANALOG OUTPUT prompt, select 1 4mA, 2 20mA, or select 4 Other to manually input a value between 4 and 20 milliamperes. Select

Enter. It will indicate the fixed output. Select OK.

4. Check the installed transmitter in the test loop to verify that it reads the value that it was commanded to output. If the readings do not match, either the transmitter requires an output trim or the current meter is malfunctioning.

HART

After completing the test procedure, the display returns to the loop test screen and allows the user to choose another output value. To end the Loop Test, Select 5 End and Enter. The Test device screen will appear.

The transmitter can simulate alarm conditions based on the transmitter’s current hardware and software alarm configurations.

To initiate Simulation Alarm, perform the following procedure:

1. From the Home screen, select 1 Device Setup, 2 Diag/Serv, 1 Test Device, 1 Loop Test, 3 Simulate Alarm.

2. Based on the chosen alarm conditions, the transmitter will display an alarm.

3. To return the transmitter to normal conditions, select 5 End.

AMS

Right click and select “Diagnostics and Calibration.” Choose “Test” and select “Loop Test.” The loop test wizard will walk through the process to fix the output for either sensor 1 or 2.

The transmitter must be returned to normal conditions (turn off loop test) before placing back in process

Right click and select “Diagnostics and Calibration.” Choose “Test” and select “Loop Test.” The loop test wizard will walk through the process to fix the analog output. From the loop test wizard screen choose “END.” A message will appear indicating that it is OK to return to normal.

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HART

MULTIDROP COMMUNICATION

Figure 3-4. Typical Multidropped Network

Multidropping refers to the connection of several transmitters to a single communications transmission line. Communication between the host and the transmitters takes place digitally with the analog output of the transmitters deactivated. Many of Rosemount transmitters can be multidropped. With the HART communications protocol, up to 15 transmitters can be connected on a single twisted pair of wires or over leased phone lines.

The application of a multidrop installation requires consideration of the update rate necessary from each transmitter, the combination of transmitter models, and the length of the transmission line. Each transmitter is identified by a unique address (1–15) and responds to the commands defined in the HART protocol.

Handheld Terminal

Computer or DCS

HART Interface

Power Supply

3144P HART

transmitter

Power Supply

Impedance

250 Ω

4–20 mA

Figure 3-4 shows a typical multidrop network. Do not use this figure as an installation diagram. Contact Emerson Process Management product support with specific requirements for multidrop applications.

A HART-based communicator can test, configure, and format a multidropped 3144P transmitter the same as in a standard point-to-point installation.

NOTE

The 3144P is set to address 0 at the factory, allowing it to operate in the standard point-to-point manner with a 4–20 mA output signal. To activate multidrop communication, the transmitter address must be changed to a number between 1 and 15. This change deactivates the 4–20 mA analog output, sending it to 4 mA. The failure mode current also is disabled.

AMS

Right click and select “Configuration Properties” from the menu screen. Select the “HART” tab. From here, assign the polling address.

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USE WITH THE HART TRI-LOOP

To prepare the 3144P transmitter with dual-sensor option for use with a Rosemount 333 HART Tri-Loop, you must configure the transmitter to Burst Mode and set the process variable output order. In Burst Mode, the transmitter provides digital information for the four process variables to the HART Tri-Loop. The HART Tri-Loop divides the signal into separate 4–20 mA loops for up to three of the following choices:

• primary variable (PV)

• secondary variable (SV)

• tertiary variable (TV)

• quaternary variable (QV)

When using the 3144P transmitter with dual-sensor option in conjunction with the HART Tri-Loop, consider the configuration of the differential, average, first good temperatures, Sensor Drift Alarm, and Hot Backup features (if applicable).

NOTE

These procedures assume that the sensors and the transmitter are connected, powered, and functioning properly, and that a Field Communicator is connected to the transmitter control loop and is communicating successfully. For communicator usage instructions, see “Commissioning” on page 2-2.

Set the Transmitter to Burst Mode

HART

To set the transmitter to burst mode, follow the steps below.

1. From the Home screen, select 1 Device setup, 3 Configuration, 4 Device output configuration, 3 HART output, 4 Burst option to prepare to set the transmitter to burst command 3. The communicator displays the Burst option screen.

2. Select Process vars/current. The communicator returns to the HART output screen.

3. Select 3Burst mode to prepare to enable Burst Mode. The communicator displays the Burst Mode screen.

4. Select On to enable Burst Mode. The communicator returns to the HART output screen.

5. Select Send to download the new configuration information to the transmitter.

Set Process Variable Output Order

To set the process variable output order, follow the steps below.

1. From the Home screen, select 1 Device setup, 3 Configuration, 1 Variable Mapping, 5 Variable Remapping. Select OK to set the control loop to manual. The communicator displays the Primary Variable screen.

2. Select the item to be set as the primary variable at the Select PV prompt.

3. Repeat step 2 for the SV, TV, and QV. The communicator displays the Variable mapping screen.

4. Select OK to accept the order to which the variables are mapped, or Abort to abort the entire procedure.

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NOTE

Take careful note of the process variable output order. You must configure the HART Tri-Loop to read the variables in the same order.

5. Select OK to return the control loop to automatic control.

AMS

Right click and select “Configuration” from the menu screen. Select “Set Variable Mapping”. The “Set Variable Mapping wizard” will go through the mapping procedure.

Special Considerations

To initiate operation between a 3144P transmitter with dual-sensor option and the HART Tri-Loop, consider the configuration of both the differential, average, first good temperatures, Sensor Drift Alarm, and Hot Backup features (if applicable).

Differential Temperature Measurement

To enable the differential temperature measurement feature of a dual-sensor 3144P operating in conjunction with the HART Tri-Loop, adjust the range end points of the corresponding channel on the HART Tri-Loop to include zero. For example, if the secondary variable of the transmitter is to report the differential temperature, configure the transmitter accordingly (see “Set Process Variable Output Order” on page 3-25) and adjust the corresponding channel of the HART Tri-Loop so one range end point is negative and the other is positive.

Hot Backup

To enable the Hot Backup feature of a 3144P transmitter with dual-sensor option operating in conjunction with the HART Tri-Loop, ensure that the output units of the sensors are the same as the units of the HART Tri-Loop. Use any combination of RTDs or thermocouples as long as the units of both match the units of the HART Tri-Loop.

Using the Tri-Loop to Detect Sensor Drift Alarm

The dual-sensor 3144P transmitter sets a failure flag (via HART) whenever a sensor failure occurs. If an analog warning is required, the HART Tri-Loop can be configured to produce an analog signal that can be interpreted by the control system as a sensor failure.

Use these steps to set up the HART Tri-Loop to transmit sensor failure alerts.

1. Configure the dual-sensor 3144P variable map as shown.

Variable Mapping

PV Sensor 1 or Sensor Average SV Sensor 2 TV Differential Temperature QV As Desired

2. Configure Channel 1 of the HART Tri-Loop as TV (differential temperature). If either sensor should fail, the differential temperature output will be +9999 or –9999 (high or low saturation), depending on the position of the Failure Mode Switch (see “Failure Mode and Security Switch Locations” on page 2-5).

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Figure 3-5. Tracking Sensor Drift and Sensor Failure with Differential Temperature

Rosemount 3144P

3. Select temperature units for Channel 1 that match the differential temperature units of the transmitter.

4. Specify a range for the TV such as –100 to 100 °C. If the range is large, then a sensor drift of a few degrees will represent only a small percent of range. If Sensor 1 or Sensor 2 fails, the TV will be +9999 (high saturation) or –9999 (low saturation). In this example, zero is the midpoint of the TV range. If a ∆T of zero is set as the lower range limit (4 mA), then the output could saturate low if the reading from Sensor 2 exceeds the reading from Sensor 1. By placing zero in the middle of the range, the output will normally stay near 12 mA, and the problem will be avoided.

5. Configure the DCS so that TV < –100 °C or TV > 100 °C indicates a sensor failure and, for example, TV ≤ –3 °C or TV ≥ 3 °C indicates a drift alert. See Figure 3-5.

Sensor Failure

100 °C

3 °C 0 °C

–3 °C

DIFFERENTIAL

TEMPERATURE

–100 °C

(Failure Mode Switch HIGH)

Sensor Drift

Sensor Failure

(Failure Mode Switch LOW)

HART

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CALIBRATION Calibrating the transmitter increases the precision of your measurement

system. The user may use one or more of a number of trim functions when calibrating. To understand the trim functions, it is necessary to understand that HART transmitters operate differently from analog transmitters. An important difference is that smart transmitters are factory-characterized; they are shipped with a standard sensor curve stored in the transmitter firmware. In operation, the transmitter uses this information to produce a process variable output, dependent on the sensor input. The trim functions allow the user to make adjustments to the factory-stored characterization curve by digitally altering the transmitter’s interpretation of the sensor input.

Calibration of the 3144P may include the following procedures:

• Sensor Input Trim: digitally alter the transmitter’s interpretation of the input signal

• Transmitter Sensor Matching: generates a special custom curve to match that specific sensor curve, as derived from the Callendar-Van Dusen constants

• Output Trim: calibrates the transmitter to a 4–20 mA reference scale

• Scaled Output Trim: calibrates the transmitter to a user-selectable reference scale.

TRIM THE TRANSMITTER

The trim functions should not be confused with the rerange functions. Although the rerange command matches a sensor input to a 4–20 mA output—as in conventional calibration—it does not affect the transmitter’s interpretation of the input.

One or more of the trim functions may be used when calibrating. The trim functions are as follows

• Sensor Input Trim

• Transmitter Sensor Matching

•Output Trim

• Output Scaled Trim

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Figure 3-6. Trim

Application: Linear Offset Application: Linear Offset and Slope Correction Solution: Single-Point Trim Solution: Two-Point Trim Method:

1. Connect sensor to transmitter. Place sensor in bath between range points.

2. Enter known bath temperature using the 375 Field Communicator.

One-Point Trim Two-Point Trim

Resistance (ohms)

Temperature

Transmitter System Curve

Site-Standard Curve

Method:

1. Connect sensor to transmitter. Place sensor in bath at low range point.

2. Enter known bath temperature using the 375 Field Communicator.

3. Repeat at high range point.

Resistance (ohms)

Temperature

Sensor Input Trim The Sensor Trim command allows the user to digitally alter the transmitter’s

HART Fast Keys 1, 2, 2, 1, 1

interpretation of the input signal as shown in Figure 3-6 on page 3-29. The sensor trim command trims, in engineering (°F, °C, °R, K) or raw (Ω, mV) units, the combined sensor and transmitter system to a site standard using a known temperature source. Sensor trim is suitable for validation procedures or for applications that require profiling the sensor and transmitter together.

HART

Perform a sensor trim if the transmitters digital value for the primary variable does not match the plant’s standard calibration equipment. The sensor trim function calibrates the sensor to the transmitter in temperature units or raw units. Unless the site-standard input source is NIST-traceable, the trim functions will not maintain the NIST-traceability of your system

To perform a sensor trim, use the following procedure:

Single Sensor Trim

1. Connect the sensor or calibrator device to the transmitter.

2. Connect the communicator to the transmitter loop.

3. From the Home screen, select 1 Device Setup, 2 Diag/Service, 2 Calibration, 1Sensor Trim, 1 Sensor Inp Trim to prepare to trim the sensor. Select 1 Sensor 1.

4. Select Sensor 1.

NOTE

A warning will appear reminding the user to Set the Control Loop to Manual” (see “Setting the Loop to Manual” on page 2-2.)

5. The communicator will ask “Are you using an active calibrator?”

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a. Select “No” if a sensor is connected to the transmitter b. Select “Yes” if using a calibration device. By selecting yes, the

transmitter will be put into active calibration mode (see “Active Calibrator and EMF Compensation” on page 3-31). This is critical if the calibrator requires constant sensor current for calibration. If using a calibration device that can accept pulsed current, select “No.

6. Select the appropriate sensor trim units at the ENTER SNSR 1 TRIM UNITS prompt.

7. Select 1 Lower Only, 2 Upper Only or 3 Lower and Upper at the SELECT SENSOR TRIM POINTS prompt.

8. Adjust the calibration device to the desired trim value (must be within the selected sensor limits). If trimming a combined sensor and transmitter system, expose the sensor to a known temperature and allow the temperature reading to stabilize. Use a bath, furnace or isothermal block, measured with a site-standard thermometer, as the known temperature source.

9. Select OK once the temperature stabilizes.

10. Enter the lower or upper trim point, depending on your selection in Step 7.

Dual Sensor Trim

1. Connect the sensor or calibrator device to the transmitter. a. When using sensors, connect the two sensors or a dual element

sensor

b. When using a calibrator, connect the device to both sensor inputs.

2. Connect the communicator to the transmitter loop.

3. From the Home screen, select 1 Device Setup, 2 Diag/Service,

2 Calibration, 1Sensor Trim, 1 Sensor Inp Trim to prepare to trim the sensor. Select 1 Sensor 1.

4. The Communicator will prompt the user to select either Sensor 1 or 2.

The sensors can be trimmed in either order, but it is recommended to trim Sensor 1 first.

NOTE

A warning will appear reminding the user to Set the Control Loop to Manual” (see “Setting the Loop to Manual” on page 2-2.)

5. The communicator will ask “Are you using an active calibrator?”

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a. Select “No” if a sensor is connected to the transmitter b. Select “Yes” if using a calibration device. By selecting yes, the

6. Select the appropriate sensor trim units at the ENTER SNSR 1 TRIM

UNITS prompt.

7. Select 1 Lower Only, 2 Upper Only or 3 Lower and Upper at the SELECT

SENSOR TRIM POINTS prompt.

8. Adjust the calibration device to the desired trim value (must be within the

selected sensor limits). If trimming a combined sensor and transmitter system, expose the sensor to a known temperature and allow the temperature reading to stabilize. Use a bath, furnace or isothermal block, measured with a site-standard thermometer, as the known temperature source.

9. Select OK once the temperature stabilizes.

10. Enter the lower or upper trim point, depending on your selection in Step 7.

HART

To trim the second sensor, repeat the same procedure only in Step 4, select the sensor not yet calibrated (usually Sensor 2)

AMS

For AMS, configure each sensor as indicated above.

Right click on an AI device and select “Diagnostics and Calibration” from the menu. Select “Calibrate,” then “Sensor Trim,” then “Sensor Input Trim.”

The wizard will continue through the process.

The transmitter may be restored to the factory default by selecting: “Diagnostics and Calibration,” “Sensor Trim,” “Revert to Factory Trim.”

The wizard will recall the factory trim for a given sensor

Apply changes made (see “AMS” on page 3-5).

Active Calibrator and EMF Compensation

HART Fast Keys 1, 2, 2, 1, 3

The transmitter operates with a pulsating sensor current to allow EMF compensation and detection of open sensor conditions. Because some calibration equipment requires a steady sensor current to function properly, the “Active Calibrator Mode” feature should be used when an Active Calibrator, which requires a constant sensor current, is connected. Enabling this mode will temporarily set the transmitter to provide steady sensor current unless two sensor inputs are configured. Disable this mode before putting the transmitter back into the process. Disabling this mode will set the transmitter back to pulsating current. “Active Calibrator Mode” is volatile and will automatically be disabled when a Master Reset is performed (via HART) or when power is cycled.

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EMF compensation allows the transmitter to provide sensor measurements that are not affected by unwanted voltages, which are typically due to thermal EMFs in the equipment connected to the transmitter or by some types of calibration equipment. If this equipment also requires steady sensor current, the transmitter must be set to “Active Calibrator Mode.” However, the steady current does not allow the transmitter to perform EMF compensation. As a result, a difference in readings between the Active Calibrator and actual sensor may exist.

If a reading difference is experienced and the difference is greater than the plant’s accuracy specification allows, perform a sensor trim with “Active Calibrator Mode” disabled. In this case, an active calibrator capable of tolerating pulsating sensor current must be used or the actual sensors must be connected to the transmitter. When the 375 Field Communicator or AMS asks if an Active Calibrator is being used when the sensor trim routine is entered, select No. This will leave the “Active Calibrator Mode” disabled.

Contact a Emerson Process Management representative for more information.

Transmitter-Sensor Matching

HART Fast Keys 1, 3, 2, 1, 1

The 3144P accepts Callendar-Van Dusen constants from a calibrated RTD schedule and generates a special custom curve to match that specific sensor Resistance vs. Temperature performance. Matching the specific sensor curve with the transmitter significantly enhances the temperature measurement accuracy. See the comparison below:

System Accuracy Comparison at 150 °C Using a PT 100 (α=0.00385)

RTD with a Span of 0 to 200 °C

Standard RTD Matched RTD 3144P ±0.10 °C 3144P ±0.10 °C Standard RTD ±1.05 °C Matched RTD ±0.18 °C Total S y s t e m

(1) Calculated using root-summed-squared (RSS) statistical method

(1)

TotalSystemAccuracy TransmitterAccuracy()

±1.05 °C Total System

(1)

SensorAccuracy()

±0.21 °C

The following input constants, included with specially-ordered Rosemount temperature sensors, are required:

= Resistance at Ice Point

Alpha = Sensor Specific Constant Beta = Sensor Specific Constant Delta = Sensor Specific Constant Other sensor may have “A,B, or C” values for constants.

To input Callendar-Van Dusen constants, perform the following procedure:

1. From the HOME screen, select 1 Device Setup, 3 Configuration, 2 Sensor Config, 1 Change Type/Conn., 1 Sensor 1. Select OK after you set the control loop to manual.

2. Select Cal VanDusen at the ENTER SENSOR TYPE prompt.

3. Select the appropriate number of wires at the ENTER SENSOR CONNECTION prompt.

4. Enter the R

, Alpha, Beta, and Delta values from the stainless steel tag

attached to the special-order sensor when prompted.

5. Select OK after you return the control loop to automatic control.

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To disable the transmitter-sensor matching feature from the HOME screen select 1 Device Setup, 3 Configuration, 2 Sensor Config, 1 Change

Type/Conn. Choose the appropriate sensor type from the ENTER SENSOR TYPE prompt.

D/A Output Trim or Scaled Output Trim

When using two sensors, repeat Steps 1 – 5 for the second sensor. In Step 1, select Sensor 2 instead of Sensor 1.

NOTE

When you disable transmitter-sensor matching, the transmitter reverts to factory trim input. Make certain the transmitter engineering units default correctly before placing the transmitter into service.

Callendar Van-Dusen constants can be viewed anytime by making the following selections:

From the Home screen select 1 Device Setup, 3 Configuration, 2 Sensor Config, 2 Show Type/Conn.

AMS

Right click on the device and select “Configuration” from the menu. Select the “Sensor connections.” Change the Type and Connection.

The wizard will go through the required changes. In the field, select “Cal VanDusen to enter the sensor type.

Perform an D/A output trim (scaled output trim) if the digital value for the primary variable matches the plant standard but the transmitter’s analog output does not match the digital value on the output device, such as the ampmeter. The output trim function calibrates the transmitter analog output to a 4–20 mA reference scale; the scaled output trim function calibrates to a user-selectable reference scale. To determine the need for an output trim or a scaled output trim, perform a loop test (see “Loop Test” on page 3-22).

HART

Figure 3-7. Dynamics of Smart Temperature Measurement

Analog-to-Digital

Signal Conversion

Sensor and Ohm/mV Trim adjust the signal here

Analog

Input

Transmitter Electronics Module

Microprocessor

375 Field

Communicator

Digital-to-Analog

Signal Conversion

Output and Scaled Output Trim adjust the signal here

HART

Output

Analog Output

Output Trim The D/A Trim command allows the user to alter the transmitter’s conversion of

HART Fast Keys 1, 2, 2, 2

the input signal to a 4–20 mA output (see Figure 3-7 on page 3-33). Calibrate the analog output signal at regular intervals to maintain measurement precision. To perform a digital-to-analog trim, perform the following procedure:

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1. From the HOME screen, select 1 Device setup, 2 Diag/Service, 2 Calibration, 2 D/A trim. Set the control loop to manual and select OK.

2. Connect an accurate reference meter to the transmitter at the CONNECT REFERENCE METER prompt. To do so, shunt the power to the transmitter through the reference meter at some point in the loop. Select OK after connecting the reference meter.

3. Select OK at the SETTING FLD DEV OUTPUT TO 4 MA prompt. The transmitter outputs 4.00 mA.

4. Record the actual value from the reference meter, and enter it at the ENTER METER VALUE prompt. The communicator prompts the user to verify if the output value equals the value on the reference meter.

5. If the reference meter value equals the transmitter output value, then select 1 Yes and go to step 6. If the reference meter value does not equal the transmitter output value, then select 2 No and go to step 4.

6. Select OK at the SETTING FLD DEV OUTPUT TO 20 MA prompt and repeat steps 4 and 5 until the reference meter value equals the transmitter output value.

7. Return the control loop to automatic control and select OK.

HART

AMS

Right click on the device and select “Diagnostics and Calibration” from the menu. Select the “Calibrate” and choose the “D/A Trim.”

This wizard will go through the required changes.

Scaled Output Trim The Scaled D/A Trim command matches the 4 and 20 mA points to a

HART Fast Keys 1, 2, 2, 3

user-selectable reference scale other than 4 and 20 mA (2–10 volts, for example). To perform a scaled D/A trim, connect an accurate reference meter to the transmitter and trim the output signal to scale as outlined in the ”Output Trim” procedure.

AMS

Right click on the device and select “Diagnostics and Calibration” from the menu. Select the “Calibrate” and choose the “Scaled D/A Trim.”

This wizard will go through the required changes.

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TROUBLESHOOTING

HART / 4–20 mA If a malfunction is suspected despite the absence of a diagnostics message

on the 375 Field Communicator display, follow the procedures described in Table 3-1 to verify that transmitter hardware and process connections are in good working order. Under each of four major symptoms, specific suggestions are offered for solving problems. Always deal with the most likely and easiest-to-check conditions first.

Advanced troubleshooting information is available in Table 3-2 on page 3-36.

Table 3-1. HART / 4–20 mA Basic Troubleshooting

Symptom Potential Source Corrective Action

Transmitter Does Not Communicate with 375 Field Communicator

High Output

Erratic Output

Low Output or No Output

Loop Wiring

Sensor Input Failure or Connection

Loop Wiring

Power Supply

Electronics Module

Loop wiring

Electronics Module

Sensor Element • Connect a 375 Field Communicator and enter the transmitter test mode to

Loop Wiring • Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 V dc

Electronics Module • Connect a 375 Field Communicator and check the sensor limits to ensure

• Check the revision level of the transmitter device descriptors (DDs) stored in your communicator. The communicator should report Dev v3, DD v2 (improved), or Dev v2, DD v1 (previous). Contact Emerson Process Management Customer Central for assistance.

• Check for a minimum of 250 ohms resistance between the power supply and 375 Field Communicator connection.

• Check for adequate voltage to the transmitter. If a 375 Field Communicator is connected and 250 ohms resistance is properly in the loop, then the transmitter requires a minimum of 12.0 V at the terminals to operate (over entire 3.90 to

20.5 mA operating range), and 17.5 V minimum to communicate digitally.

• Check for intermittent shorts, open circuits, and multiple grounds.

• Connect a 375 Field Communicator and enter the transmitter test mode to isolate a sensor failure.

• Check for a sensor open circuit.

• Check if the process variable is out of range.

• Check for dirty or defective terminals, interconnecting pins, or receptacles.

• Check the output voltage of the power supply at the transmitter terminals. It should be 12.0 to 42.4 V dc (over entire 3.90 to 20.5 mA operating range).

• Connect a 375 Field Communicator and enter the transmitter test mode to isolate module failure.

• Connect a 375 Field Communicator and check the sensor limits to ensure calibration adjustments are within the sensor range.

• Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 V dc at the transmitter terminals (over entire 3.90 to 20.5 mA operating range).

• Check for intermittent shorts, open circuits, and multiple grounds.

• Connect a 375 Field Communicator and enter the loop test mode to generate signals of 4 mA, 20 mA, and user-selected values.

• Connect a 375 Field Communicator and enter the transmitter test mode to isolate module failure.

isolate a sensor failure.

• Check if the process variable is out of range.

(over entire 3.90 to 20.5 mA operating range).

• Check for shorts and multiple grounds.

• Check for proper polarity at the signal terminal.

• Check the loop impedance.

• Connect a 375 Field Communicator and enter the loop test mode.

• Check wire insulation to detect possible shorts to ground.

calibration adjustments are within the sensor range.

• Connect a 375 Field Communicator and enter the transmitter test mode to isolate an electronics module failure.

HART

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Table 3-2. 375 Field Communicator Error Warning Descriptions – HART

Message Description

Add item for ALL device types or only for this ONE device type

Command not implemented The connected device does not support this function. Communication error Either a device sends back a response indicating that the message it received was unintelligible,

Configuration memory not compatible with connected device

Device busy The connected device is busy performing another task. Device disconnected Device fails to respond to a command. Device write protected Device is in write-protect mode. Data can not be written. Device write protected. Do you still want

to shut off? Display value of variable on hot key

menu?

Download data from configuration memory to device

Exceed field width Indicates that the field width for the current arithmetic variable exceeds the device-specified

Exceed precision Indicates that the precision for the current arithmetic variable exceeds the device-specified

Ignore next 50 occurrences of status? Asked after displaying device status. Softkey answer determines whether next 50 occurrences of

Illegal character An invalid character for the variable type was entered. Illegal date The day portion of the date is invalid. Illegal month The month portion of the date is invalid. Illegal year The year portion of the date is invalid. Incomplete exponent The exponent of a scientific notation floating point variable

Incomplete field The value entered is not complete for the variable type. Looking for a device Polling for multidropped devices at addresses 1–15. Mark as read

only variable on hotkey menu?

No device configuration in configuration memory

No device found Poll of address zero fails to find a device, or poll of all addresses fails to find a device if auto-poll

No hotkey menu available for this device. There is no menu named “hotkey” defined in the device description for this device. No offline

devices available No simulation

devices available No UPLOAD_VARIABLES in ddl for this

device

No valid items The selected menu or edit display contains no valid items. OFF KEY DISABLED Appears when the user attempts to turn the 375 Field Communicator off before sending modified

Online device disconnected with unsent data. RETRY or OK to lose data

Asks the user whether the hot key item being added should be added for all device types or only for the type of device that is connected.

or the 375 Field Communicator cannot understand the response from the device. The configuration stored in memory is incompatible with the device to which a transfer has been

requested.

Device is in write-protect mode. Press YES to turn the 375 Field Communicator off and lose the unsent data.

Asks whether the value of the variable should be displayed adjacent to its label on the hot key menu if the item being added to the hot key menu is a variable.

Prompts user to press SEND softkey to initiate a memory to device transfer.

description edit format.

device status will be ignored or displayed.

is incomplete.

Asks whether the user should be allowed to edit the variable from the hotkey menu if the item being added to the hotkey menu is a variable.

There is no configuration saved in memory available to re-configure off-line or transfer to a device.

is enabled.

There are no device descriptions available to be used to configure a device offline.

There are no device descriptions available to simulate a device.

There is no menu named “upload_variables” defined in the device description for this device. This menu is required for offline configuration.

data or before completing a method. There is unsent data for a previously connected device. Press RETRY to send data, or press OK

to disconnect and lose unsent data.

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Table 3-2. 375 Field Communicator Error Warning Descriptions – HART

Message Description

Out of memory for hotkey configuration. Delete unnecessary items.

Overwrite existing configuration memory Requests permission to overwrite existing configuration either by a device-to-memory transfer or

Press OK Press the OK softkey. This message usually appears after an error message from the application

Restore device value? The edited value that was sent to a device was not properly implemented. Restoring the device

Save data from device to configuration memory

Saving data to configuration memory Data is being transferred from a device to configuration memory. Sending data to device Data is being transferred from configuration memory to a device. There are write only variables which have

not been edited. Please edit them

There is unsent data. Send it before shutting off?

Too few data bytes received

Transmitter fault Device returns a command response indicating a fault with the connected device. Units for <variable label> has changed.

Unit must be sent before editing, or invalid data will be sent.

Unsent data to online device. SEND or LOSE data

Use up/down arrows to change contrast. Press DONE when done.

Value out of range The user-entered value is either not within the range for the given type and size of variable or not

<message> occurred reading/writing <variable label>

<variable label> has an unknown value. Unit must be sent before editing, or invalid data will be sent.

(1) Variable parameters within the text of a message are indicated with <variable parameter>.

Reference to the name of another message is identified by [another message].

There is no more memory available to store additional hotkey items. Unnecessary items should be deleted to make space available.

by an offline configuration. User answers using the softkeys.

or as a result of HART communications.

value returns the variable to its original value. Prompts user to press SAVE softkey to initiate a device-to-memory transfer.

There are write-only variables that have not been set by the user. These variables should be set or invalid values may be sent to the device.

Press YES to send unsent data and turn the 375 Field Communicator off. Press NO to turn the 375 Field Communicator off and lose the unsent data.

Command returns fewer data bytes than expected as determined by the device description.

The engineering units for this variable have been edited. Send engineering units to the device before editing this variable.

There is unsent data for a previously connected device which must be sent or thrown away before connecting to another device.

Gives direction to change the contrast of the 375 Field Communicator display.

within the min/max specified by the device. Either a read/write command indicates too few data bytes received, transmitter fault, invalid

response code, invalid response command, invalid reply data field, or failed pre- or post-read method; or a response code of any class other than SUCCESS is returned reading a particular variable.

A variable related to this variable has been edited. Send related variable to the device before editing this variable.

(1)

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LCD Display The LCD display displays abbreviated diagnostic messages for

troubleshooting the transmitter. To accommodate two-word messages, the display alternates between the first and second word. Some diagnostic messages have a higher priority than others, so messages appear according to their priority, with normal operating messages appearing last. Messages on the Process Variable line refer to general device conditions, while messages on the Process Variable Unit line refer to specific causes for these conditions. A description of each diagnostic message follows.

Table 3-3. LCD Display Error Warning Descriptions

Message Description

[BLANK] If the meter does not appear to function, make sure the transmitter is configured for the meter option you desire.

The meter will not function if the LCD Display option is set to Not Used.

FAIL -or- HDWR FAIL This message indicates one of several conditions including:

SNSR 1 FAIL -orSNSR 2 FAIL

SNSR 1 SAT -orSNSR 2 SAT

HOUSG SAT The transmitter operating temperature limits (–40 to 185 °F (40 to

LOOP FIXED During a loop test or a 4–20 mA output trim, the analog output defaults to a fixed value. The Process Variable

OFLOW The location of the decimal point, as configured in the meter setup, is not compatible with the value to be

HOT BU Hot Backup is enabled and Sensor 1 has failed. This message is displayed on the Process Variable line and is

WARN DRIFT ALERT Drift Alert warning is enabled and the difference between Sensor 1 and Sensor 2 has exceeded the

ALARM DRIFT ALERT The analog output is in alarm. Drift Alert alarm is enabled and the difference between Sensor 1 and Sensor 2

ALARM The digital and analog outputs are in alarm. Possible causes of this condition include, but are not limited to, an

WARN The transmitter is still operating, but something is not correct. Possible causes of this condition include, but are

The transmitter has experienced an electronics module failure. The transmitter self-test has failed. If diagnostics indicate a failure of the electronics module, replace the electronics module with a new one. Contact the nearest Emerson Process Management Field Service Center if necessary.

The transmitter has detected an open or shorted sensor condition. The sensor(s) might be disconnected, connected improperly, or malfunctioning. Check the sensor connections and sensor continuity.

The temperature sensed by the transmitter exceeds the sensor limits for this particular sensor type.

85 °C)) have been exceeded.

line of the display alternates between the amount of current selected in milliamperes and “WARN.” The Process Variable Unit line toggles between “LOOP,” “FIXED,” and the amount of current selected in milliamperes.

displayed by the meter. For example, if the meter is measuring a process temperature greater than 9.9999 degrees, and the meter decimal point is set to 4 digit precision, the meter will display an “OFLOW” message because it is only capable of displaying a maximum value of 9.9999 when set to 4 digit precision.

always accompanied by a more descriptive message on the Process Variable Unit line. In the case of a Sensor 1 failure with Hot Backup enabled, for example, the Process Variable line displays “HOT BU,” and the Process Variable Unit line alternates between “SNSR 1” and “FAIL.”

user-specified limit. One of the sensors may be malfunctioning. The Process Variable line displays “WARN” and the Process Variable Unit line alternates between “DRIFT” and “ALERT.”

has exceeded the user-specified limit. The transmitter is still operating, but one of the sensors may be malfunctioning. The Process Variable line displays “ALARM” and the Process Variable Unit line alternates between “DRIFT” and “ALERT.”

electronics failure or an open sensor. This message is displayed on the Process Variable line and is always accompanied by a more descriptive message on the Process Variable Unit line. In the case of a Sensor 1 failure, for example, the Process Variable line displays “ALARM,” and the Process Variable Unit line alternates between “SNSR 1” and “FAIL.”

not limited to, an out-of-range sensor, a fixed loop, or an open sensor condition. In the case of a Sensor 2 failure with Hot Backup enabled, the Process Variable line displays “WARN,” and the Process Variable Unit line alternates between “SNSR 2” and “RANGE.”

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Rosemount 3144P

AMS Software (HART / 4-20 mA only)

If a malfunction is suspected despite the absence of a diagnostics message, follow the procedures described in Table 3-4 to verify that transmitter hardware and process connections are in good working order. Under each of four major symptoms, specific suggestions are offered for solving problems. Always deal with the most likely and easiest-to-check conditions first.

Advanced troubleshooting information is available in Table 3-5 on page 3-40.

AMS also provides help screens to assist in message communication. See “When the Drift Alert warning or alarm is enable, they indicate that the differences between Sensor 1 and Sensor 2 has exceeded the user-specified limit. One of the sensors may be malfunctioning. The sensors should both be investigated at the earliest opportunity.” on page 3-42.

Table 3-4. AMS Basic Troubleshooting

Symptom Potential Source Corrective Action

Transmitter Does Not Communicate with AMS Software

High Output

Erratic Output

Low Output or No Output

Loop Wiring

Sensor Input Failure or Connection

Loop Wiring

Power Supply

Electronics Module

Loop wiring

Electronics Module

Sensor Element • Using AMS, set the transmitter test mode to isolate a sensor failure.

Loop Wiring • Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 V dc

Electronics Module • Using AMS, check the sensor limits to ensure calibration adjustments are within

• Check the revision level of the transmitter device descriptors (DDs) stored in your software. The communicator should report Dev v3, DD v2 (improved), or Dev v2, DD v1 (previous). Contact Emerson Process Management Customer Central for assistance.

• Check for a minimum of 250 ohms resistance between the power supply and AMS software.

• Check for adequate voltage to the transmitter. If the AMS software is connected and 250 ohms resistance is properly in the loop, then the transmitter requires a minimum of 12.0 V at the terminals to operate (over entire 3.90 to

20.5 mA operating range), and 17.5 V minimum to communicate digitally.

• Check for intermittent shorts, open circuits, and multiple grounds.

• Using AMS, set the transmitter test mode to isolate a sensor failure.

• Check for a sensor open circuit.

• Check if the process variable is out of range.

• Check for dirty or defective terminals, interconnecting pins, or receptacles.

• Check the output voltage of the power supply at the transmitter terminals. It should be 12.0 to 42.4 V dc (over entire 3.90 to 20.5 mA operating range).

• Using AMS, set the transmitter test mode to isolate module failure.

• Using AMS, check the sensor limits to ensure calibration adjustments are within the sensor range.

• Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 V dc at the transmitter terminals (over entire 3.90 to 20.5 mA operating range).

• Check for intermittent shorts, open circuits, and multiple grounds.

• Using AMS, set the loop test mode to generate signals of 4 mA, 20 mA, and user-selected values.

• Using AMS, set the transmitter test mode to isolate module failure.

• Check if the process variable is out of range.

(over entire 3.90 to 20.5 mA operating range).

• Check for shorts and multiple grounds.

• Check for proper polarity at the signal terminal.

• Check the loop impedance.

• Set the loop test mode.

• Check wire insulation to detect possible shorts to ground.

the sensor range.

• Using AMS, set the transmitter test mode to isolate an electronics module failure.

HART

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HART

Table 3-5. AMS Error Warning Descriptions

Message Description

Command not implemented The connected device does not support this function. Communication error Either a device sends back a response indicating that the message it received was unintelligible,

or the 375 Field Communicator cannot understand the response from the device. Device busy The connected device is busy performing another task. Device disappears from list Device fails to respond to a command. Device write protected Device is in write-protect mode. Data can not be written. Illegal character An invalid character for the variable type was entered. Illegal date The day portion of the date is invalid. Illegal month The month portion of the date is invalid. Illegal year The year portion of the date is invalid. Incomplete exponent The exponent of a scientific notation floating point variable

Incomplete field The value entered is not complete for the variable type. Sending data to device Data is being transferred from configuration memory to a device. There are write only variables which have

not been edited. Please edit them

There is unsent data. Send it before shutting off?

Too few data bytes received

Transmitter fault Device returns a command response indicating a fault with the connected device. Units for <variable label> has changed.

Unit must be sent before editing, or invalid data will be sent.

Unsent data to online device. SEND or LOSE data

Value out of range The user-entered value is either not within the range for the given type and size of variable or not

<message> occurred reading/writing <variable label>

<variable label> has an unknown value. Unit must be sent before editing, or invalid data will be sent.

(1) These messages are communicated through pop-up menus.

is incomplete.

There are write-only variables that have not been set by the user. These variables should be set

or invalid values may be sent to the device.

Press YES to send unsent data and turn the 375 Field Communicator off. Press NO to turn the

375 Field Communicator off and lose the unsent data.

Command returns fewer data bytes than expected as determined by the device description.

The engineering units for this variable have been edited. Send engineering units to the device

before editing this variable.

There is unsent data for a previously connected device which must be sent or thrown away

before connecting to another device.

within the min/max specified by the device.

Either a read/write command indicates too few data bytes received, transmitter fault, invalid

response code, invalid response command, invalid reply data field, or failed pre- or post-read

method; or a response code of any class other than SUCCESS is returned reading a particular

variable.

A variable related to this variable has been edited. Send related variable to the device before

editing this variable.

(1)

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AMS Screens AMS provides advanced diagnostic messages, as well as help screens for the

messages. Using the help screens can provide quick reference to remedying the situation. The trouble shooting section for this manual can also be pasted in AMS to assist in quick and accurate troubleshooting reference.

Alarms and Alerts

Right click on the device and select “Process Variables”. This screen shows the sensor reading and status of the sensor and transmitters. If no alarms or alerts are activated, the screen will look like this:

Sensor Failure

When the transmitter has detected an open or shorted sensor condition, the sensor(s) might be disconnected, connected improperly, or malfunctioning. Check the Sensor connections and continuity. Replace the sensor if necessary.

HART

By right-clicking on the device and selecting “status,: the status screen appears. This screen shows an overview of the transmitter health. Red bars indicate system changes or that the transmitter is not working properly and should be investigated.

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HART

Hot BackUp

Hot Backup is enabled and Sensor 1 or Sensor 2 has failed. The following is displayed on the Process Variable Screen. The suspect sensor should be investigated as soon as possible, and replaced as necessary.

Sensor Drift Alarm

When the Drift Alert warning or alarm is enable, they indicate that the differences between Sensor 1 and Sensor 2 has exceeded the user-specified limit. One of the sensors may be malfunctioning. The sensors should both be investigated at the earliest opportunity.

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Section 4 FOUNDATION Fieldbus

Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2

Foundation fieldbus function blocks . . . . . . . . . . . . . . . . page 4-4

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-5

Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . page 4-10

LCD Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-11

Analog Input (AI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-14

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-20

Troubleshooting Guides . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-25

OVERVIEW This section provides information on configuring, troubleshooting, operating,

and maintaining the 3144P transmitter using F

OUNDATION fieldbus protocol.

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

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

• Make sure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

• Do not remove the connection head cover in explosive atmospheres when the circuit is live.

• Before powering a F make sure the instruments in the loop are installed in accordance with instrinsically safe or non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

• All connection head covers must be fully engaged to meet explosion-proof requirements.

Process leaks could result in death or serious injury.

• Do not remove the thermowell while in operation.

• Install and tighten thermowells and sensors before applying pressure

Electrical shock could cause death or serious injury.

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

OUNDATION fieldbus segment in an explosive atmosphere,

FOUNDATION Fieldbus

www.rosemount.com

Rosemount 3144P

GENERAL BLOCK INFORMATION

Device Description Before configuring the device, ensure the host has the appropriate Device

Node Address The transmitter is shipped at a temporary (248) address. This will enable

FOUNDATION Fieldbus

Modes The Resource, Transducer, and all function blocks in the device have modes

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Description file revision for this device. The device descriptor can be found on www.rosemount.com. The initial release of the Rosemount 3144P with

OUNDATION fieldbus protocol is device revision 1.

OUNDATION fieldbus host systems to automatically recognize the device and

F move it to a permanent address.

of operation. These modes govern the operation of the block. Every block supports both automatic (AUTO) and out of service (OOS) modes. Other modes may also be supported.

Changing Modes

To change the operating mode, set the MODE_BLK.TARGET to the desired mode. After a short delay, the parameter MODE_BLOCK.ACTUAL should reflect the mode change if the block is operating properly.

Permitted Modes

It is possible to prevent unauthorized changes to the operating mode of a block. To do this, configure MODE_BLOCK.PERMITTED to allow only the desired operating modes. It is recommended to always select OOS as one of the permitted modes.

Types of Modes

For the procedures described in this manual, it will be helpful to understand the following modes:

AUTO

The functions performed by the block will execute. If the block has any outputs, these will continue to update. This is typically the normal operating mode.

Out of Service (OOS)

The functions performed by the block will not execute. If the block has any outputs, these will typically not update and the status of any values passed to downstream blocks will be “BAD”. To make some changes to the configuration of the block, change the mode of the block to OOS. When the changes are complete, change the mode back to AUTO.

MAN

In this mode, variables that are passed out of the block can be manually set for testing or override purposes.

Other Types of Modes

Other types of modes are Cas, RCas, ROut, IMan and LOW. Some of these may be supported by different function blocks in the 3144P. For more information, see the Function Block manual (document number 00809-0100-4783).

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NOTE

When an upstream block is set to OOS, this will impact the output status of all downstream blocks. The figure below depicts the hierarchy of blocks:

Resource

Block

Transducer

Block

Analog Input

(AI Block)

Other

function

blocks

Link Active Scheduler The 3144P can be designated to act as the backup Link Active Scheduler

(LAS) in the event that the designated LAS is disconnected from the segment. As the backup LAS, the 3144P will take over the management of communications until the host is restored.

The host system may provide a configuration tool specifically designed to designate a particular device as a backup LAS. Otherwise, this can be configured manually as follows:

1. Access the Management Information Base (MIB) for the 3144P. To activate the LAS capability, write 0x02 to the BOOT_OPERAT_FUNCTIONAL_CLASS object (Index 605). To deactivate, write 0x01.

2. Restart the device.

Block Instantiation Rosemount devices are pre-configured with function blocks at the factory, the

default configuration for the 3144P is listed below. The 3144P can have up to three additional instantiated function blocks (nine instantiated, four permanent, three additional).

• 3 Analog Input Blocks (tag names AI 1400, AI 1500, AI 1600)

• 2 Proportional/Integral/Derivative Block (tag name PID 1700, PID 1800)

• Input Selector (tag names ISEL 1900)

• Signal Characterizer (tag name CHAR 2000)

• Arithmetic (tag name ARTH 2100)

• Output Splitter (tag name OSPL 2200)

FOUNDATION Fieldbus

The four permanent blocks are as follows:

•Resource

•Transducer

•LCD

•SPM

The 3144P supports the use of Function Block Instantiation. When a device supports block instantiation, the number of blocks and block types can be defined to match specific application needs.The number of blocks that can be instantiated is only limited by the amount of memory within the device and the block types that are supported by the device. Instantiation does not apply to permanent device blocks like the Resource, Sensor Transducer, LCD Transducer, and Advanced Diagnostics Blocks.

By reading the parameter “FREE_SPACE” in the Resource block you can determine how many blocks you can instantiate. Each block that you instantiate takes up 4.5% of the “FREE_SPACE”.

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Capabilities Virtual Communication Relationship (VCRs)

Table 4-1. Network Parameters

FOUNDATION Fieldbus

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Block instantiation is done by the host control system or configuration tool, but not all hosts are required to implement this functionality. Please refer to your specific host or configuration tool manual for more information.

There are a total of 20 VCRs. One is permanent and 19 are fully configurable by the host system. Thirty link objects are available.

Network Parameter Value

Slot Time 8 Maximum Response Delay 2 Maximum Inactivity to Claim LAS Delay 32 Minimum Inter DLPDU Delay 8 Time Sync class 4 (1 ms) Maximum Scheduling Overhead 21 Per CLPDU PhL Overhead 4 Maximum Inter-channel Signal Skew 0 Required Number of Post-transmission-gab-ext Units 0 Required Number of Preamble-extension Units 1

FOUNDATION FIELDBUS FUNCTION BLOCKS

Block Execution times

Block Execution Time

Resource – Transducer – LCD Block – Advanced Diagnostics – Analog Input 1, 2, 3 60 ms PID 1 and 2 with Autotune 90 ms Input Selector 65 ms Signal Characterizer 45 ms Arithmetic 60 ms Output Splitter 60 ms

For reference information on the Resource, Sensor Transducer, AI, LCD Transducer blocks refer to “Foundation Fieldbus Block Information” on page A-1. Reference information on the PID block can be found in the Function Block manual document number 00809-0100-4783.

Resource Block (index number 1000)

The Resource Function Block (RB) contains diagnostic, hardware and electronics information. There are no linkable inputs or outputs to the Resource Block.

Sensor Transducer Block (index number 1100)

The Sensor Transducer Function Block (STB) temperature measurement data, including sensor and terminal temperature, The STB also includes information about sensor type, engineering units, linearization, reranging, damping, temperature compensation, and diagnostics.

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LCD Transducer Block (index number 1200)

The LCD Transducer Block is used to configure the LCD display.

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Analog Input Block (index number 1400, 1500, and 1600)

The Analog Input Function Block (AI) processes the measurements from the sensor and makes them available to other function blocks. The output value from the AI block is in engineering units and contains a status indicating the quality of the measurement. The AI block is widely used for scaling functionality.

PID Block (index number 1700 and 1800)

The PID Function Block combines all of the necessary logic to perform proportional/integral/derivative (PID) control. The block supports mode control, signal scaling and limiting, feed forward control, override tracking, alarm limit detection, and signal status propagation.

The block supports two forms of the PID equation: Standard and Series. You can choose the appropriate equation using the MATHFORM parameter. The Standard ISA PID equation is the default selection and Autotune.

Input Selector (index number 1900)

The signal selector block provides selection of up to four inputs and generates an output based on the configured action. This block normally receives its inputs from AI blocks. The block performs maximum, minimum, middle, average and ‘first good’ signal selection.

FOUNDATION Fieldbus

RESOURCE BLOCK

FEATURES and FEATURES_SEL

Output Splitter (index number OSPL 2200)

The output splitter block provides the capability to drive two control outputs from a single input. Each output is a linear function of some portion of the input.

Arithmetic (index number 2100)

This block is designed to permit simple use of popular measurement math functions. The user does not have to know how to write equations. The math algorithm is selected by name, chosen by the user for the function to be done.

Signal Characterizer (index number 2000)

The signal characterizer block has two sections, each with an output that is a non-linear function of the respective input. The non-linear function is determined by a single look-up table with 21 arbitrary x-y pairs. The status of an input is copied to the corresponding output, so the block may be used in the control or process signal path.

The parameters FEATURES and FEATURE_SEL determine optional behavior of the 3144P.

FEATURES

The FEATURES parameter is read only and defines which features are supported by the 3144P. Below is a list of the FEATURES the 3144P supports.

UNICODE

All configurable string variables in the 3144P, except tag names, are octet strings. Either ASCII or Unicode may be used. If the configuration device is generating Unicode octet strings, you must set the Unicode option bit.

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REPORTS

The 3144P supports alert reports. The Reports option bit must be set in the features bit string to use this feature. If it is not set, the host must poll for alerts.

SOFT W LOCK and HARD W LOCK

Inputs to the security and write lock functions include the hardware security switch, the hardware and software write lock bits of the FEATURE_SEL parameter, the WRITE_LOCK parameter, and the DEFINE_WRITE_LOCK parameter.

The WRITE_LOCK parameter prevents modification of parameters within the device except to clear the WRITE_LOCK parameter. During this time, the block will function normally updating inputs and outputs and executing algorithms. When the WRITE_LOCK condition is cleared, a WRITE_ALM alert is generated with a priority that corresponds to the WRITE_PRI parameter.

The FEATURE_SEL parameter enables the user to select a hardware or software write lock or no write lock capability. To enable the hardware security function, enable the HW_SEL bit in the FEATURE_SEL parameter. When this bit has been enabled the WRITE_LOCK parameter becomes read only and will reflect the state of the hardware switch. In order to enable the software write lock, the SW_SEL bit must be set in the FEATURE_SEL parameter. Once this bit is set, the WRITE_LOCK parameter may be set to “Locked” or “Not Locked.” Once the WRITE_LOCK parameter is set to “Locked” by either the software or the hardware lock, all user requested writes as determined by the DEFINE_WRITE_LOCK parameter shall be rejected.

The DEFINE_WRITE_LOCK parameter allows the user to configure whether the write lock functions (both software and hardware) will control writing to all blocks, or only to the resource and transducer blocks. Internally updated data such as process variables and diagnostics will not be restricted by the security switch.

The following table displays all possible configurations of the WRITE_LOCK parameter.

FEATURE_SEL HW_SEL bit

0 (off) 0 (off) NA 1 (unlocked) Read only NA All 0 (off) 1 (on) NA 1 (unlocked) Read/Write NA All 0 (off) 1 (on) NA 2 (locked) Read/Write Physical Function

0 (off) 1 (on) NA 2 (locked) Read/Write Everything None 1 (on) 0 (off) 1 (on) 0 (off) 1 (locked) 2 (locked) Read only Physical Function

1 (on) 0 (off) 1 (locked) 2 (locked) Read only Everything None

(1) The hardware and software write lock select bits are mutually exclusive and the hardware select has the highest priority. When the HW_SEL bit if set to 1

(on), the SW_SEL bit is automatically set to 0 (off) and is read only.

FEATURE_SEL SW_SEL bit

(1)

SECURITY SWITCH WRITE_LOCK

0 (unlocked) 1 (unlocked) Read only NA All

WRITE_LOCK Read/Write

DEFINE_WRITE_LOCK

Write access to blocks

Blocks only

FEATURES_SEL

FEATURES_SEL is used to turn on any of the supported features. The default setting of the 3144P does not select any of these features. Choose one of the supported features if any.

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MAX_NOTIFY

The MAX_NOTIFY parameter value is the maximum number of alert reports that the resource can have sent without getting a confirmation, corresponding to the amount of buffer space available for alert messages. The number can be set lower, to control alert flooding, by adjusting the LIM_NOTIFY parameter value. If LIM_NOTIFY is set to zero, then no alerts are reported.

Rosemount 3144P

PlantWeb™ Alerts The alerts and recommended actions should be used in conjunction with

“Operation” on page 4-20.

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.

FOUNDATION Fieldbus

FAILED_ENABLED

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.

1. Electronics

2. NV Memory

3. HW / SW Incompatible

4. Primary Value

5. Secondary Value

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.

FAILE D _ P R I

Designates the alerting priority of the FAILED_ALM, see “Alarm Priority” on page 4-18. 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.

FAILE D _ A L M

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

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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.

MAINT_ENABLED

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

FOUNDATION Fieldbus

Below is a list of the conditions with the highest priority first.

1. Primary Value Degraded

2. Secondary Value Degraded

3. Configuration Error

4. Calibration Error

MAINT_MASK

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, “Process Alarms” on page 4-17. The default is 0 and the recommended values is 3 to 7.

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.

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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.

1. NV Writes Deferred

2. SPM Process Anomaly detected

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 “Process Alarms” on page 4-17. The default is 0 and the recommended values are 1 or 2.

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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.

Recommended Actions for PlantWeb Alerts

Table 4-2. RB.RECOMMENDED_ACTION

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.

Alarm Type

None None No action required

Advisory

Maintenance

PlantWeb Alerts

Failed

Diagnostic Error

Failed/Maint/Advise Active Event

NV Writes Deferred Non-volatile writes have been deferred, leave

Configuration Error Re-write the Sensor Configuration Primary Value Degraded

Calibration Error Retrim the device Secondary Value Degraded Electronics Failure Replace the Device HW / SW Incompatible Verify the Hardware Revision is compatible

NV Memory Failure Reset the device then download the Device

Primary Value Failure Verify the instrument process is within the

Secondary Value Failure Sensor Drift Alarm or Hot BU active

Recommended Action Text String

the device powered until the advisory goes away

Confirm the operating range of the applied sensor and/or verify the sensor connection and device environment

Verify the ambient temperature is within operating limits

with the Software Revision

Configuration

Sensor range and / or confirm sensor configuration and wiring. Verify the ambient temperature is within operating limits Verify sensor range and/or confirm sensor configuration and wiring.

FOUNDATION Fieldbus

Resource Block Diagnostics

Table 4-3. Resource Block BLOCK_ERR messages

Block Errors

Table 4-3 lists conditions reported in the BLOCK_ERR parameter.

Condition Name and Description

Other Device Needs Maintenance Now Memory Failure: A memory failure has occurred in FLASH, RAM, or EEPROM memory Lost NV Data: Non-volatile data that is stored in non-volatile memory has been lost.

Device Needs Maintenance Now Out of Service: The actual mode is out of service.

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Table 4-4. Resource Block SUMMARY_STATUS messages

Table 4-5. Resource Block RB.DETAILED_STATUS

FOUNDATION Fieldbus

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Condition Name

No repair needed Repairable Call Service Center

RB.DETAILED_STATUS Description

Sensor Transducer block error. Active when any SENSOR_DETAILED_STAUS bit is on Manufacturing Block integrity error The manufacturing block size, revision, or checksum is

wrong

Hardware/software incompatible Verify the manufacturing block revision and the

hardware revision are correct/compatible with the

software revision. Non-volatile memory integrity error Invalid checksum on a block of NV data ROM integrity error Invalid application code checksum Lost deferred NV data Device has been power-cycled while non-volatile writes

were being deferred to prevent premature memory

failure, the write operations have been deferred. NV Writes Deferred A high number of writes has been detected to

non-volatile memory. To prevent premature failure, the

write operations have been deferred.

SENSOR TRANSDUCER BLOCK

NOTE

When the engineering units of the XD_SCALE in the associated AI Block are selected, the engineering units in the Transducer Block change to the same units. THIS IS THE ONLY WAY TO CHANGE THE ENGINEERING UNITS IN THE SENSOR TRANSDUCER BLOCK.

Damping The damping parameter in the Transducer Block may be used to filter

measurement noise. By increasing the damping time, the transmitter will have a slower response time, but will decrease the amount of process noise that is translated to the Transducer Block Primary Value. Because both the LCD and AI Block get input from the Transducer Block, adjusting the damping parameter will effect the values passed to both blocks.

NOTE

The AI Block has it's own filtering parameter called PV_FTIME. For simplicity, it is better to do filtering in the Transducer Block as damping will be applied to primary value on every sensor update. If filtering is done in AI block, damping will be applied to output every macrocycle. The LCD will display value from Transducer block.

Sensor Transducer Block Diagnostics

Table 4-6. Sensor Transducer Block BLOCK_ERR messages

Condition Name and Description

Other Out of Service: The actual mode is out of service.

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Table 4-7. Sensor Transducer Block XD_ERR messages

Rosemount 3144P

Condition Name and Description

Electronics Failure: An electrical component failed. I/O Failure: An I/O failure occurred. Software Error: The software has detected an internal error. Calibration Error: An error occurred during calibration of the device. Algorithm Error: The algorithm used in the transducer block produced an error due to

overflow, data reasonableness failure, etc.

Table 4-8 lists the potential errors and the possible corrective actions for the given values. The corrective actions are in order of increasing system level compromises. The first step should always be to reset the transmitter and then if the error persists, try the steps in Table 4-8. Start with the first corrective action and then try the second.

Table 4-8. Sensor Transducer Block STB.SENSOR_ DETAILED_ STATUS messages

STB.SENSOR_DETAILED_STATUS Description

Invalid Configuration Wrong sensor connection with wrong sensor

ASIC RCV Error The micro detected a chksum or start/stop bit

ASIC TX Error The ASIC detected a communication error ASIC Interrupt Error ASIC interrupts are too fast or slow Reference Error Reference resistors are greater than 25% of

ASIC Configuration Error ASIC registers were not written correctly. (Also

Sensor Open Open sensor detected Sensor Shorted Shorted sensor detected Terminal Temperature Failure Open or shorted PRT detected Sensor Out of Operating Range Sensor readings have gone beyond

Sensor beyond operating limits Sensor readings have gone below 2% of lower

Terminal Temperature Out of Operating Range Terminal Temperature Beyond Operating Limits

Sensor Degraded For RTDs, this is excessive EMF detected. Calibration Error The user trim has failed due to excessive

type

failure with ASIC communication

known value

CALIBRATION_ERR)

PRIMRY_VALUE_RANGE values

range or above 6% of upper range of sensor. PRT readings have gone beyond SECONDARY_VALUE_RANGE values PRT readings have gone below 2% of lower range or above 6% of upper range of PRT. (These ranges are calculated and are not the actual range of the PRT which is a PT100 A385)

correction or sensor failure during the trim method

FOUNDATION Fieldbus

LCD TRANSDUCER BLOCK

The LCD display connects directly to the 3144P electronics FOUNDATION fieldbus output board. The meter indicates output and abbreviated diagnostic messages.

The first line of five characters displays the sensor being measured.

If the measurement is in error, “Error” appears on the first line. The second line indicates if the device or the sensor is causing the error.

Each parameter configured for display will appear on the LCD for a brief period before the next parameter is displayed. If the status of the parameter goes bad, the LCD will also cycle diagnostics following the displayed variable:

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Custom Meter Configuration

FOUNDATION Fieldbus

Shipped from the factory, Parameter #1 (sensor 1) is configured to display the Primary Variable (temperature) from the LCD Transducer Block. When shipping with dual sensors, sensor 2 will be configured to display To change the configuration of Parameter #1, #2, or to configure additional parameters use the configuration parameters below. The LCD Transducer Block can be configured to sequence four different process variables as long as the parameters are sourced from a function block that is scheduled to execute within the 3144P temperature transmitter. If a function block is scheduled in the 3144P that links a process variable from another device on the segment, that process variable can be displayed on the LCD.

DISPLAY_PARAM_SEL

The DISPLAY_PARAM_SEL parameter specifies how many process variables will be displayed. Select up to four display parameters.

BLK_TAG_#

(1)

Enter the Block Tag of the function block that contains the parameter to be displayed. The default function block tags from the factory are:

TRANSDUCER AI 1400, 1500, 1600 PID 1700 and 1800 ISEL 1900 CHAR 2000 ARTH 2100 Output Splitter OSPL 2200

BLK_TYPE_#

(1)

Enter the Block Type of the function block that contains the parameter to be displayed. This parameter is generally selected via a drop-down menu with a list of possible function block types. (e.g. Transducer, PID, AI, etc.)

PARAM_INDEX_#

(1)

The PARAM_INDEX_# parameter is generally selected via a drop-down menu with a list of possible parameter names based upon what is available in the function block type selected. Choose the parameter to be displayed.

CUSTOM_TAG_#

(1)

The CUSTOM_TAG_# is an optional user-specified tag identifier that can be configured to be displayed with the parameter in place of the block tag. Enter a tag of up to five characters.

UNITS_TYPE_#

(1)

The UNITS_TYPE_# parameter is generally selected via a drop-down menu with three options: AUTO, CUSTOM, or NONE. Select AUTO only when the parameter to be displayed is pressure, temperature, or percent. For other parameters, select CUSTOM and be sure to configure the CUSTOM_UNITS_# parameter. Select NONE if the parameter is to be displayed without associated units.

CUSTOM_UNITS_#

(1)

Specify custom units to be displayed with the parameter. Enter up to six characters. To display Custom Units the UNITS_TYPE_# must be set to CUSTOM.

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(1) # represents the specified parameter number.

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Rosemount 3144P

Self Test Procedure for the LCD

The SELF_TEST parameter in the Resource block will test LCD segments. When running, the segments of the display should light up for about five seconds.

If your host system supports methods refer to your host documentation on how to run the “Self Test” method. If your host system does not support methods than you can run this test manually be following the steps below.

1. Put Resource block into “OOS” (Out of Service).

2. Go to the parameter called “SELF_TEST” and write the value Self test (0x2).

3. Observe the LCD screen when you are doing this. All of the segments should light up.

4. Put the Resource block back into “AUTO”.

LCD Transducer Block Diagnostics

Table 4-9. LCD Transducer Block BLOCK_ERR messages

Symptom Possible Causes Recommended Action

The LCD displays “DSPLY#INVLID.” Read the BLOCK_ERR and if it says “BLOCK CONFIGURATION” perform the Recommended Action

The Bar Graph and the AI.OUT readings do not match. The OUT_SCALE of the AI block is not

“3144P” is being displayed or not all of the values are being displayed.

The display reads OOS The resource and or the LCD Transducer

The display is hard to read. Some of the LCD segments may have

Condition Name and Description

Other Out of Service: The actual mode is out of service.

One or more of the display parameters are not configured properly.

configured properly.

The LCD block parameter “DISPLAY_PARAMETER_SELECT is not properly configured.

block are OOS.

gone bad. Device is out o the temperature limit for the

LCD. (-20 to 85 °C)

See “LCD Transducer Block” on page 2-16.

See “Analog Input (AI) Function Block” on page 2-9 and “Display bar graph” on page 2-18.

See “LCD Transducer Block” on page 2-16.

Verify that both blocks are in “AUTO,”

See XXXX (Self Test). If some of the segment is bad, replace the LCD.

Check ambient temperature of the device.

FOUNDATION Fieldbus

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ANALOG INPUT (AI)

Simulation Simulate replaces the channel value coming from the Sensor Transducer

FOUNDATION Fieldbus

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Block. For testing purposes, it is possible to manually drive the output of the Analog Input Block to a desired value. There are two ways to do this.

Manual Mode

To change only the OUT_VALUE and not the OUT_STATUS of the AI Block, place the TARGET MODE of the block to MANUAL. Then, change the OUT_VALUE to the desired value.

Simulate

1. If the SIMULATE switch is in the OFF position, move it to the ON position. If the SIMULATE jumper is already in the ON position, you must move it to off and place it back in the ON position.

NOTE

As a safety measure, the switch must be reset every time power is interrupted to the device in order to enable SIMULATE. This prevents a device that is tested on the bench from getting installed in the process with SIMULATE still active.

2. To change both the OUT_VALUE and OUT_STATUS of the AI Block, set the TARGET MODE to AUTO.

3. Set SIMULATE_ENABLE_DISABLE to ‘Active’.

4. Enter the desired SIMULATE_VALUE to change the OUT_VALUE and SIMULATE_STATUS_QUALITY to change the OUT_STATUS. If errors occur when performing the above steps, be sure that the SIMULATE jumper has been reset after powering up the device.

Configure the AI block A minimum of four parameters are required to configure the AI Block. The

parameters are described below with example configurations shown at the end of this section.

CHANNEL

Select the channel that corresponds to the desired sensor measurement. .

Channel Measurement

1 Input 1 2 Input 2 3 ∆T 4 Body Temperature

L_TYPE

The L_TYPE parameter defines the relationship of the sensor measurement (sensor temperature) to the desired output temperature of the AI Block. The relationship can be direct or indirect.

Direct

Select direct when the desired output will be the same as the sensor measurement (sensor temperature).

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Indirect

Select indirect when the desired output is a calculated measurement based on the sensor measurement (e.g. ohm or mV). The relationship between the sensor measurement and the calculated measurement will be linear.

XD_SCALE and OUT_SCALE

The XD_SCALE and OUT_SCALE each include four parameters: 0%, 100%, engineering units, and precision (decimal point). Set these based on the L_TYPE:

L_TYPE is Direct

When the desired output is the measured variable, set the XD_SCALE to represent the operating range of the process. Set OUT_SCALE to match XD_SCALE.

L_TYPE is Indirect

When an inferred measurement is made based on the sensor measurement, set the XD_SCALE to represent the operating range that the sensor will see in the process. Determine the inferred measurement values that correspond to the XD_SCALE 0 and 100% points and set these for the OUT_SCALE.

FOUNDATION Fieldbus

NOTE

To avoid configuration errors, only select Engineering Units for XD_SCALE and OUT_SCALE that are supported by the device. The supported units are:

Temperature (Channel 1 and 2) Terminal Temperature

C °C

°F °F °K K °R R

Ω

When the engineering units of the XD_SCALE are selected, this causes the engineering units of the PRIMARY_VALUE_RANGE in the Transducer Block to change to the same units. THIS IS THE ONLY WAY TO CHANGE THE ENGINEERING UNITS IN THE SENSOR TRANSDUCER BLOCK, PRIMARY_VALUE_RANGE parameter.

Configuration Examples

Sensor Type: 4-wire, Pt 100 α = 385. Desired measurement process temperature in the –200 to 500 °F range. Monitor the transmitter electronics temperature in the –40 to 185 °F. range

Transducer Block

If Host System Supports Methods:

1. Click on Methods

2. Choose Sensor Connections

(1)

3. Follow on-screen instruction to setup Sensor 1 as a 4-wire, Pt 100 α = 385.

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FOUNDATION Fieldbus

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If Host System Does Not Support Methods:

1. Put transducer block into OOS mode. a. Go to MODE_BLK.TARGET b. Choose OOS (0x80)

2. Go to SENSOR_CONNECTION. a. Choose 4-wire (0x4)

3. Go to SENSOR_TYPE. a. Choose PT100A385

4. Put the transducer block back into Auto mode.

AI Blocks (Basic Configuration)

AI1 as Process Temperature

1. Put the AI Block into OOS mode. a. Go to MODE_BLK.TARGET b. Choose OOS (0x80)

2. Go to CHANNEL a. Choose Sensor 1

3. Go to L_TYPE a. Choose Direct

4. Go to XD_Scale a. Choose UNITS_INDEX to be °F b. Set 0% = –200, set 100% = 500

5. Go to OUT_SCALE a. Choose UNITS_INDEX to be °F b. Set the 0 and 100 scale to be the same as in Step 4b.

6. Put the AI Block back into Auto mode.

7. Follow Host Procedure to download schedule into Block.

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(1) Some choices may not be available due to the current configuration of the device.

Examples:

1) Sensor 2 cannot be configured at all if Sensor 1 is set up as a 4-wire sensor

2) If Sensor 2 is configured, Sensor 1 can not be set up as a 4-wire sensor (and vise-versa)

3) When selecting a thermocouple as the sensor type, a 3- or 4-wire connection cannot be selected. In this situation, configure the other sensor as “Not used.” This will clear the dependencies that are preventing the configuration of the desired sensor.

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AI2 as Terminal Temperature (body temperature)

1. Put the AI Block into OOS mode. a. Go to MODE_BLK.TARGET b. Choose OOS (0x80)

2. Go to CHANNEL a. Choose Body Temperature

3. Go to L_TYPE a. Choose Direct

4. Go to XD_Scale a. Choose UNITS_INDEX to be °F b. Set 0% = –40, set 100% = 185

5. Go to OUT_SCALE a. Choose UNITS_INDEX to be °F b. Set the 0 and 100 scale to be the same as in step 4b.

6. Put the AI Block back into Auto mode.

7. Follow Host Procedure to download schedule into Block.

FOUNDATION Fieldbus

Filtering NOTE

If damping has already been configured in the Transducer Block, setting a non-zero value for PV_FTIME will add to that damping.

The filtering feature changes the response time of the device to smooth variations in output readings caused by rapid changes in input. Adjust the filter time constant (in seconds) using the PV_FTIME parameter. Set the filter time constant to zero to disable the filter feature.

Process Alarms Process Alarm detection is based on the OUT value. Configure the alarm

limits of the following standard alarms:

• High (HIGH_LIM)

• High high (HIGH_HIGH_LIM)

• Low (LOW_LIM)

• Low low (LOW_LOW_LIM)

In order to avoid alarm chattering when the variable is oscillating around the alarm limit, an alarm hysteresis in percent of the PV span can be set using the ALARM_HYS parameter. The priority of each alarm is set in the following parameters:

•HIGH_PRI

• HIGH_HIGH_PRI

•LOW_PRI

• LOW_LOW_PRI

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FOUNDATION Fieldbus

Status When a PV is passed from one function block to another, it passes a STATUS

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Alarm Priority

Alarms are grouped into five levels of priority:

Priority

Number

0 The alarm condition is not used. 1 An alarm condition with a priority of 1 is recognized by the system, but is not

2 An alarm condition with a priority of 2 is reported to the operator.

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.

along with the PV. The STATUS can be: GOOD, BAD, or UNCERTAIN. When a fault occurs in the device, the PV will lock at the last value that had a STATUS of GOOD and the STATUS will change from GOOD to BAD or from GOOD to UNCERTAIN. It is important that the control strategy that uses the PV also monitors the STATUS to take appropriate action when the STATUS changes from GOOD to either BAD or UNCERTAIN.

Status Options

Status Options (STATUS_OPTS) supported by the AI block are shown below:

Priority Description

reported to the operator.

Propagate Fault Forward

If the status from the sensor is Bad, Device failure or Bad, Sensor failure, propagate it to OUT without generating an alarm. The use of these sub-status in OUT is determined by this option. Through this option, the user may determine whether alarming (sending of an alert) will be done by the block or propagated downstream for alarming.

Uncertain if Limited

Set the output status of the Analog Input block to uncertain if the measured or calculated value is limited.

BAD

Set the output status to Bad if the sensor is violating a high or low limit.

Uncertain if Man Mode

Set the output status of the Analog Input block to uncertain if the actual mode of the block is Man.

NOTE

The instrument must be in Out of Service mode to set the status option.

Advanced Features The following parameters provide the capabilities to drive a discrete output

alarm in the event that a process alarm (HI_HI_LIM, HI_LIM, LO_LO_LIM, LO_LIM) has been exceeded.

ALARM_TYPE

ALARM_TYPE allows one or more of the process alarm conditions (HI_HI_LIM, HI_LIM, LO_LO_LIM, LO_LIM) detected by the AI function block to be used in setting its OUT_D parameter.

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OUT_D

OUT_D is the discrete output of the AI function block based on the detection of process alarm condition(s). This parameter may be linked to other function blocks that require a discrete input based on the detected alarm condition.

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Analog Input Diagnostics

Table 4-10. AI BLOCK_ERR Conditions.

Rosemount 3144P

Condition

Number

0 Other 1 Block Configuration Error: the selected channel carries a measurement that

3 Simulate Active: Simulation is enabled and the block is using a simulated

7 Input Failure/Process Variable has Bad Status: The hardware is bad, or a

14 Power Up: Block is not scheduled 15 Out of Service: The actual mode is out of service.

Condition Name and Description

is incompatible with the engineering units selected in XD_SCALE, the L_TYPE parameter is not configured, or CHANNEL = zero.

value in its execution.

bad status is being simulated.

Table 4-11. Troubleshooting the AI block

Symptom Possible Causes Recommended Actions

Bad or no temperature readings (Read the AI “BLOCK_ERR” parameter)

OUT parameter status reads UNCERTAIN and substatus reads EngUnitRangViolation.

BLOCK_ERR reads OUT OF SERVICE (OOS)

BLOCK_ERR reads CONFIGURATION ERROR

BLOCK_ERR reads POWERUP Download Schedule into block. Refer to host for downloading

BLOCK_ERR reads BAD INPUT 1. Sensor Transducer Block Out Of Service (OOS)

No BLOCK_ERR but readings are not correct. If using Indirect mode, scaling could be wrong.

No BLOCK_ERR. Sensor needs to be calibrated or Zero trimmed.

Out_ScaleEU_0 and EU_100 settings are incorrect.

1. AI Block target mode target mode set to OOS.

2. Resource Block OUT OF SERVICE.

1. Check CHANNEL parameter (see “CHANNEL” on page 2-9)

2. Check L_TYPE parameter (see “L_TYPE” on page 2-9)

3. Check XD_SCALE engineering units. (see “XD_SCALE and OUT_SCALE” on page 2-10

procedure.

2. Resource Block Out of Service (OOS)

1. Check XD_SCALE parameter.

2. Check OUT_SCALE parameter. (see “XD_SCALE and OUT_SCALE” on page 2-10)

See Section 3: Operation and Maintenance to determine the appropriate trimming or calibration procedure.

See “XD_SCALE and OUT_SCALE” on page 2-10.

FOUNDATION Fieldbus

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OPERATION

Overview This section contains information on operation and maintenance procedures.

FOUNDATION Fieldbus

Trim the Transmitter Calibrating the transmitter increases the precision of your measurement

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METHODS AND MANUAL OPERATION

Each F displaying and performing operations. Some hosts will use DD Methods to complete device configuration and will display data consistently across platforms. There is no requirement that a host or configuration tool support these features.

In addition, if your host or configuration tool does not support methods this section will cover manually configuring the parameters involved with each method operation. For more detailed information on the use of methods, see your host or configuration tool manual.

system. The user may use one or more of a number of trim functions when calibrating. The trim functions allow the user to make adjustments to the factory-stored characterization curve by digitally altering the transmitter’s interpretation of the sensor input.

OUNDATION fieldbus host or configuration tool has different ways of

Figure 4-1. Trim

Application: Linear Offset Application: Linear Offset and Slope Correction Solution: Single-Point Trim Solution: Two-Point Trim Method:

1. Connect sensor to transmitter. Place sensor in bath between range points.

2. Enter known bath temperature using the 375 Field Communicator.

One-Point Trim Two-Point Trim

Resistance (ohms)

Temperature

Transmitter System Curve

Site-Standard Curve

Method:

1. Connect sensor to transmitter. Place sensor in bath at low range point.

2. Enter known bath temperature using the 375 Field Communicator.

3. Repeat at high range point.

Resistance (ohms)

Temperature

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Sensor Calibration, Lower and Upper Trim Methods

In order to calibrate the transmitter, run the Lower and Upper Trim Methods. If your system does not support methods, manually configure the Transducer Block parameters listed below.

1. Set MODE_BLK.TARGET_X to OOS

2. Set SENSOR_CAL_METHOD_X to User Trim

3. Set CAL_UNIT_X to supported engineering units in the Transducer Block

4. Apply temperature that corresponds to the lower calibration point and allow the temperature to stabilize. The temperature must be between the range limits defined in PRIMRY_VALUE_RANGE_X.

5. Set values of CAL_POINT_LO_X to correspond to the temperature applied by the sensor.

6. Apply temperature, temperature corresponding to the upper calibration

7. Allow temperature to stabilize.

8. Set CAL_POINT_HI_X

FOUNDATION Fieldbus

NOTE

CAL_POINT_HI_X must be within PRIMARY_VALUE_RANGE_X and greater than CAL_POINT_LO_X + CAL_MIN_SPAN_X.

9. Set SENSOR_CAL_DATE_X to the current date.

10. Set SENSOR_CAL_WHO_X to the person responsible for the calibration.

11. Set SENSOR _CAL_LOC_X to the calibration location.

12. Set MODE_BLK.TARGET_X to AUTO

NOTE

If trim fails the transmitter will automatically revert to factory trim. Excessive correction or sensor failure could cause device status to read “calibration error.” To clear this, trim the transmitter

Recall Factory Trim

To recall a factory trim on the transmitter, run the Recall Factory Trim. If your system does not support methods, manually configure the Transducer Block parameters listed below.

1. Set MODE_BLK.TARGET_X to OOS

2. Set SENSOR_CAL_METHOD_X to Factory Trim.

3. Set SET_FACTORY_TRIM_X to Recall.

4. Set SENSOR_CAL_DATE_X to the current date.

5. Set SENSOR_CAL_WHO_X to the person responsible for the calibration.

6. Set SENSOR _CAL_LOC_X to the calibration location.

7. Set MODE_BLK.TARGET_X to AUTO.

NOTE

When changing the sensor type, the transmitter reverts to the factory trim and any other trim performed on the transmitter is lost.

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Statistical Process Monitoring (SPM)

FOUNDATION Fieldbus

Statistical Process Monitoring algorithm is intended to provide basic information regarding the behavior of process measurements such as PID control block and actual valve position. The algorithm can monitor up to four user selected variables. All variables must reside in a scheduled function block which is contained in the device. This algorithm can perform higher levels of diagnostics by distribution of computational power to field devices. The two statistical parameters monitored by the Statistical Process Monitoring are mean and standard deviation. By using the mean and standard deviation, the process or control levels and dynamics can be monitored for change over time. The algorithm also provides:

• Configurable limits/alarms for High variation, low dynamics, and mean

changes with respect to the learned levels

• Necessary statistical information for Regulatory Control Loop

Diagnostics, Root Cause Diagnostics, and Operations Diagnostics.

NOTE

In Fieldbus devices, a wealth of information is available to the user. Both process measurement and control is feasible at the device level. The devices themselves contain both the process measurements and control signals that are necessary to not only control the process, but to determine if the process and control is healthy. By looking at the process measurement data and control output over time, one can gain additional insight into the process. Under some load conditions and process demands, changes could be interpreted as degradation of instruments, valves or major components such

as pumps, compressors, heat exchangers, etc.... This degradation may also

indicate that the loop control scheme needs to be re-tuned or re-evaluated. By learning a healthy process and continually comparing current information to the known healthy information, problems due to degradation and eventual failure can be avoided and remedied ahead of time. These diagnostics are to aid in the engineering and maintenance of the devices. False alarms and missed detections may occur. If a reoccurring problem in your process exists, please contact Rosemount for assistance with the diagnostics.

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Configuration Phase

The configuration phase is an inactive state when the SPM algorithm can be configured. In this phase, the block tags, block type, parameter, limits for high variation, low dynamics, and mean change detection can be set by the user. The “Statistical Process Monitoring Activation” parameter must be set to “disabled” to configure any SPM parameter. SPM can monitor any linkable input or output parameter of a scheduled function block that resides in the device.

Learning Phase

In the learning phase of Statistical Process Monitoring, the algorithm establishes a baseline of the mean and dynamics of a Statistical Process Monitoring variable. The baseline data is compared to current data for calculating any changes in mean or dynamics of the Statistical Process Monitoring variables.

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Monitoring Phase

The monitoring phase starts after the learning process is complete. The algorithm compares the current values to the baseline values of the mean and standard deviation. During this phase the algorithm computes the percent change in mean and standard deviation to determine if the defined limits are violated.

SPM Configuration SPM_Bypass_Verification

If “Yes” the verification of the baseline is turned off. If “No” the learned baseline is compared to the next current calculated value to ensure a good baseline value. The recommended value is NO.

SPM_Monitoring_Cycle

SPM_Monitoring_Cycle is the length of time the process values are taken and used in each calculation. A longer monitoring cycle may provide a more stable mean value. The default is 15 minutes.

SPM#_Block_Tag

Enter the Block Tag of the function block that contains the parameter to be monitored. Block tag must be entered, there is no pull-down menu to select the tag. The tag must be a valid “Block Tag” that is in the device. The default block tags from the factory are:

Rosemount 3144P

FOUNDATION Fieldbus

AI 1400 AI 1500 PID 1600 ISEL 1700 CHAR 1800 ARITH 1900

SPM can also monitor “out” parameters from other devices. To do this, link the “out” parameter to an input parameter of a function block that resides in the device, and set up SPM to monitor the input parameter.

SPM#_Block Type

Enter the Block Type of the function block that contains the parameter to be monitored.

SPM#_Parameter Index

Enter the Parameter Index of the parameter to be monitored.

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FOUNDATION Fieldbus

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SPM#_Thresholds

The SPM#_Thresholds are used to allow alerts to be sent when the values are beyond the threshold values that have been set for each parameter.

Mean Limit

Alert Limit value in percent change of the Mean compared with the baseline mean value.

High Variation

Alert Limit value in percent change of the Stdev compared with the baseline Stdev value.

Low Dynamics

Alert Limit value in percent change of the Stdev compared with the baseline Stdev value.

SPM_Active

SPM_Active parameter that starts the Statistical Process Monitoring when “Enabled”. “Disabled” turns the diagnostic monitoring off. Must be set to “Disabled” for configuration. Only set to “Enabled” after fully configuring the SPM.

SPM#_User Command

Select “Learn” after all the parameters have been configured to begin the Learning Phase. The monitoring phase will start after the learning process is complete. Select “Quit” to stop the SPM “Detect” may be selected to return to the monitoring phase.

Baseline Values

The Baseline Values are the calculated values from the process over the Learning Cycle.

SPM#_Baseline_Mean

SPM#_Baseline_Mean is the calculated average of the process variable over the Learning Cycle.

SPM#_Baseline_Standard_Deviation

SPM#_Baseline_Standard_Deviation is the square root of the variance of the process variable over the Learning Cycle.

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TROUBLESHOOTING GUIDES

Figure 4-2. 3144P troubleshooting flowchart

PROBLEMS WITH COMMUNICATIONS

Rosemount 3144P

Device does not

appear on segment.

1. Check wiring to device.

2. Recycle power to device.

3. Electronic failure. Refer to “Device does not show up on segment” in Table 4-12 for more information.

Problem Identified?

Yes

Perform Recommended Action, see Table 4-12.

Device does not

stay on segment.

Check Segment, see “Device does not stay on segment” in Table 4-12 for more information.

Problem Identified?

Yes

Perform Recommended Action, see Table 4-12 o page 4-26.

FOUNDATION Fieldbus

If the problem persists contact a sales representative.

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Table 4-12. Troubleshooting guide

FOUNDATION Fieldbus

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Symptom

Device does not show up on segment

Device does not stay on segment

(1) The corrective actions should be done with consultation of your system integrator. (2) Wiring and installation 31.25 kbit/s, voltage mode, wire medium application guide AG-140 available from the fieldbus Foundation.

(1)

(2)

Cause Recommended Actions

Unknown Recycle power to device No power to device 1. Ensure the device is connected to the segment.

Segment problems Check wiring (see Figure 2-12 on page 2-13) Electronics failing 1. Replace device. Incompatible network settings Change host network parameters.

Incorrect signal levels. Refer to host documentation for procedure.

Excess noise on segment. Refer to host documentation for procedure.

Electronics failing 1. Replace device. Other 1. Check for water around the transmitter.

2. Check voltage at terminals. There should be 9–32Vdc.

3. Check to ensure the device is drawing current. There should be approximately 11 mA.

Refer to host documentation for procedure.

1. Check for two terminators.

2. Excess cable length.

3. Bad Power supply or conditioner

1. Check for incorrect grounding.

2. Check for correct shielded wire.

3. Tighten wire connections.

4. Check for corrosion or moisture on terminals.

5. Check for Bad power supply.

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Specifications and Main Features

Frequently Asked Questions

User Manual