Emerson Rosemount 644 FOUNDATION Reference Manual

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Page 1

Reference Manual

00809-0400-4728, Rev CA

September 2018

Rosemount™ 644 Temperature Transmitter

with F

OUNDATION

™

Fieldbus Protocol

Page 2

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Reference Manual

00809-0400-4728, Rev CA

Contents

1Section 1: Introduction

Contents

September 2018

1.1 Using this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.1 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.2 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.3 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.4 Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.5 Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Return of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Product recycling/disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2Section 2: Configuration

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 General block information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.1 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.2 Node address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.3 Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.4 Link Active Scheduler (LAS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.5 Block installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.6 Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3.7 Surges/transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.4 Foundation Fieldbus function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.4.1 Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4.2 Sensor transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.3 Analog Input function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.4.4 LCD transducer block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5 Operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Content s

2.5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.5.2 Troubleshooting guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.5.3 Sensor Transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.5.4 Analog input function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.5.5 Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.5.6 LCD transducer block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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Contents

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Reference Manual

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3Section 3: Installation

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.3 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.4.1 Typical European installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.4.2 Typical north American installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.4.3 LCD display installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.5 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.5.1 Sensor connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.6.1 Ground the transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

AAppendix A: Specifications and Reference Data

A.1 Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

A.2 Ordering Information, Specifications, and Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

BAppendix B: Foundation™ Fieldbus Block Information

B.1 Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

B.1.1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

B.1.2 Parameters and descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

B.2 Sensor transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

B.2.1 Parameters and descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

B.3 Analog Input (AI) function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

B.3.1 Analog input (AI) parameter table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

B.4 LCD transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

B.5 PID block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Contents

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Reference Manual

NOTICE

00809-0100-4728, Rev CA

Rosemount™ 644 Temperature Transmitter

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.

The United States has two toll-free assistance numbers and one international number.

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

Title Page

September 2018

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 Representative.

™

nuclear-qualified products, contact your local Emerson™ Sales

Title Page

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Title Page

September 2018

Reference Manual

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Title Page

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Section 1 Introduction

1.1 Using this manual

The sections in this manual provide information on installing, operating, and maintaining the Rosemount

Section 2: Configuration provides instruction on commissioning and operating transmitters.

Information on software functions, configuration parameters, and online variables is also included.

Section 3: Installation contains mechanical and electrical installation instructions, and field upgrade

options.

Appendix A: Specifications and Reference Data supplies reference and specification data, as well as

ordering information and contains intrinsic safety approval information, European ATEX directive information, and approval drawings.

Appendix B: Foundation

™

644 Pressure Transmitter. The sections are organized as follows:

™

Fieldbus Block Information provides information regarding the function blocks

Introduction

September 2018

1.1.1 Transmitter

Features of the Rosemount 644 include:

 Accepts inputs from a wide variety of sensors

 Configuration using FOUNDATION Fieldbus Protocol

 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

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

 Temperature Sensors and Assemblies Product Data Sheet, Volume 1

 Temperature Sensors and Assemblies Product Data Sheet, Volume 2

1.2 Considerations

1.2.1 General

Electrical temperature sensors such as RTDs and thermocouples produce low-level signals proportional to their sensed temperature. The Rosemount 644 converts the low-level sensor signal to a standard 4–20 mA dc, or digital F electrical noise. This signal is then transmitted to the control room via two wires.

OUNDATION Fieldbus signal that is relatively insensitive to lead length and

1.2.2 Commissioning

The transmitter can be commissioned before or after installation. It may be useful to commission it on the bench, before installation, to ensure proper operation and to become familiar with its functionality. Make sure the instruments in the loop are installed in accordance with intrinsically safe, FISCO, or non-incendive field wiring practices.

Introduction

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Introduction

Housing temperature rise, above ambient °C (°F)

3 4 5 6 7 8 9

60 (108)

50 (90)

40 (72)

30 (54)

20 (36)

10 (18)

3.6

Extension length (in.)

815 °C (1500 °F) oven temperature

540 °C (1000 °F) oven temperature

250 °C (482 °F) oven temperature

September 2018

1.2.3 Mechanical

Location

When choosing an installation location and position, take into account the need for access to the transmitter.

Special mounting

Special mounting hardware is available for mounting a Rosemount 644 head mount transmitter to a DIN rail or assembling a new Rosemount 644 head mount to an existing threaded sensor connection head (former option code L1).

1.2.4 Electrical

Proper electrical installation is necessary to prevent errors due to sensor lead resistance and electrical noise. For best results, shielded cable should be used in electrically noisy environments.

Make wiring connections through the cable entry in the side of the connection head. Be sure to provide adequate clearance for cover removal.

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1.2.5 Environmental

The transmitter electronics module is permanently sealed within the housing, resisting moisture and corrosive damage. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

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, and extension nipple, or a remote mounting configuration to isolate the transmitter from the process.

Figure 1-1 provides an example of the relationship between transmitter housing temperature rise and

extension length.

Figure 1-1. Rosemount 644 Head Mount Transmitter Connection Head Temperature Rise vs.

Extension Length

Introduction

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Example

The transmitter specification limit is 85 °C. If the ambient temperature is 55 °C and the process temperature to be measured is 800 °C, the maximum permissible connection head temperature rise is the transmitter specification limit minus the ambient temperature (moves 85 to 55 °C), or 30 °C.

In this case, an extension of 100 mm meets this requirement, but 125 mm provides a margin of 8 °C, thereby reducing any temperature effects in the transmitter.

1.3 Return of materials

To expedite the return process in North America, call the Emerson National Response Center toll-free at 800-654-7768. This center, available 24 hours a day, 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

Introduction

September 2018

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, please contact a Emerson Process Management sales 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.

1.4 Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations.

Introduction

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Introduction

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Introduction

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Section 2 Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5

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

General block information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

Foundation Fieldbus function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19

2.1 Overview

Configuration

September 2018

This section provides information on configuring, troubleshooting, operating, and maintaining the Rosemount

™

644 Temperature transmitter using FOUNDATION™ Fieldbus Protocol.

2.2 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.

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 FOUNDATION Fieldbus segment 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.

 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.

Config uration

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Configuration

September 2018

2.3 General block information

2.3.1 Device description

Before configuring the device, ensure the host has the appropriate Device Description file revision for this device. The device descriptor can be found on Emerson.com/Rosemount Rosemount 644 with F

2.3.2 Node address

The transmitter is shipped at a temporary (248) address. This will enable FOUNDATION Fieldbus host systems to automatically recognize the device and move it to a permanent address.

2.3.3 Modes

The resource, transducer, and all function blocks in the device have modes 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

OUNDATION Fieldbus is device revision 1.

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. The initial release of the

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 LO. Some of these may be supported by different function blocks in the 644. For more information, see the Function Block Reference Manual

Configuration

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Reference Manual

Resource block

Tra n sd uc er

block

Analog input

(AI block)

Other

function

blocks

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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:

2.3.4 Link Active Scheduler (LAS)

The Rosemount 644 can be designated to act as the backup LAS in the event that the designated LAS is disconnected from the segment. As the backup LAS, the Rosemount 644 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 Rosemount 644. To activate the LAS capability, write 0x02 to the BOOT_OPERAT_FUNCTIONAL_CLASS object (Index 605). To deactivate, write 0x01.

Configuration

September 2018

2. Restart the device.

2.3.5 Block installation

Rosemount devices are pre-configured with function blocks at the factory, the default permanent configuration for the Rosemount 644 is listed below. The Rosemount 644 can have up to 10 additional instantiated function blocks.

 Two AI blocks (tag names AI 1300, AI 1400)  One proportional/integral/derivative block (tag name PID 1500)

The Rosemount 644 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 standard 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 percent of the “FREE_SPACE.”

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.

Config uration

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Configuration

September 2018

2.3.6 Capabilities

Virtual Communication Relationship (VCR)

There are a total of 12 VCR’s. One is permanent and 11 are fully configurable by the host system. 16 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 (1ms)

Maximum Scheduling Overhead 21

Per CLPDU PhL Overhead 4

Maximum Inter-channel Signal Skew 0

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Required Number of Post-transmission-gab-ext Units 0

Required Number of Preamble-extension Units 1

Block execution times

Analog input = 45 ms PID = 60 ms

2.3.7 Surges/transients

The transmitter will withstand electrical transients of the energy level encountered in static discharges or induced switching transients. However, high-energy transients, such as those induced in wiring from nearby lightning strikes, welding, heavy electrical equipment, or switching gears, can damage both the transmitter and the sensor. To protect against high-energy transients, install the transmitter into a suitable connection head with the integral transient protector, option T1. Refer to the Rosemount 644 Product Data Sheet for more information.

2.4 FOUNDATION Fieldbus function blocks

For reference information on the Resource, Sensor Transducer, AI, LCD Transducer blocks refer to F

OUNDATION Fieldbus Block Information on page 41. Reference information on the PID block can be found

in the Function Block Reference Manual

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 includes 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 meter.

Analog input block (index number 1300 and 1400)

The Analog input function block 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 1500)

The PID function block combines all of the necessary logic to perform proportional/integral/derivative 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.

2.4.1 Resource block

FEATURES and FEATURES_SEL

Configuration

September 2018

The parameters FEATURES and FEATURE_SEL determine optional behavior of the Rosemount 644.

FEATURES

The FEATURES parameter is read only and defines which features are supported by the Rosemount 644. Below is a list of the FEATURES the Rosemount 644 supports.

UNICODE

All configurable string variables in the Rosemount 644, 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.

REPORTS

The Rosemount 644 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

Inputs to the security and write lock functions include the 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.

Config uration

The FEATURE_SEL parameter enables the user to select the software write lock or no write lock capability. In order to enable the software write lock, the SOFT_W_LOCK bit must be set in the FEATURE_SEL parameter. Once this bit is set, the WRITE_LOCK parameter may be set to “Locked” or “Unlocked.” Once the WRITE_LOCK parameter is set to “Locked” by the software, all user requested writes as determined by the DEFINE_WRITE_LOCK parameter shall be rejected.

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The DEFINE_WRITE_LOCK parameter allows the user to configure whether the write lock function 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. N/A = No blocks are blocked Physical = Locks resource and transducer block Everything = Locks every block.

The following table displays all possible configurations of the WRITE_LOCK parameter.

FEATURE_SEL

SW_SEL bit

0 (off) 1 (unlocked) Read only NA All

1 (on) 1 (unlocked) Read/Write NA All

1 (on) 2 (locked) Read/Write Physical Function Blocks only

1 (on) 2 (locked) Read/Write Every thing None

WRITE_LOCK

Read/Write

DEFINE_WRITE_L

OCK

Write access to

blocks

FEATURES_SEL

FEATURES_SEL is used to turn on any of the supported features. The default setting of the Rosemount 644 does not select any of these features. Choose one of the supported features if any.

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.

Plantweb™ Alerts

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

on page 19.

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.

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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.

FAILED_PRI

Designates the alerting priority of the FAILED_ALM, see “Alarm priority” on page 17. The default is 0 and the recommended value are between 8 and 15.

Configuration

September 2018

FAILED_ACTIVE

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

FAILED_ALM

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

MAINT_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.

Below is a list of the conditions with the highest priority first.

1. Primary value degraded

2. Secondary value degraded

3. Diagnostic

Config uration

4. Configuration error

5. 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.

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MAINT_PRI

MAINT_PRI designates the alarming priority of the MAINT_ALM, “Process alarms” on page 16. 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.

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 16. The default is 0 and the recommended values are 1 or 2.

ADVISE_ACTIVE

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

ADVISE_ALM

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

Recommended actions for Plantweb alerts

RECOMMENDED_ACTION

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

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Table 2-1. RB.RECOMMENDED_ACTION

Configuration

September 2018

Alarm type

None None No action required

Advisory NV Writes Deferred

Maintenance

Plantweb alerts

Failed

Failed/Maint/Advise

Active Event

Non-volatile writes have been deferred, leave the device powered until the advisory goes away

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

NV Memory Failure

Primary Value Failure

Secondary Value Failure

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

Verify the Hardware Revision is compatible with the Software Revision

Reset the device then download the Device Configuration

Verify the instrument process is within the Sensor range and / or confirm sensor configuration and wiring.

Verify the ambient temperature is within operating limits

Recommended action

text string

2.4.2 Sensor transducer block

Note

When the engineering units of the XD_SCALE 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 display and AI block get input from the transducer block, adjusting the damping parameter will effect 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 display will display value from transducer block.

Config uration

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Configuration

September 2018

2.4.3 Analog Input function block

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. The Rosemount 644 measures both sensor temperature (channel 1) and terminal temperature (channel 2).

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.

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:

Pressure (channel 1) Temperature (channel 2)

°C °C °F °F

K K R R

W W

mV mV

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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

4-wire, Pt 100 α = 385 AI1 = process temperature AI2 = terminal temperature

Transducer block

If host system supports methods:

1. Select Methods.

2. Select Sensor Connections.

3. Follow on-screen instruction.

If host system doesn’t not support methods:

1. Put transducer block into OOS mode.

a. Go to MODE_BLK.TARGET. b. Select OOS (0x80).

Configuration

September 2018

2. Go to SENSOR_CONNECTION.

a. Select 4-wire (0x4).

3. Go to SENSOR_TYPE.

a. Select 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. Select OOS (0x80).

2. Go to CHANNEL, select Sensor 1.

3. Go to L_TYPE, select Direct.

4. Go to XD_Scale, select UNITS_INDEX to be °C.

5. Go to OUT_SCALE.

a. Select UNITS_INDEX to be °C. b. Set the 0 and 100 scale to be the same as the PRIMARY_VALUE_RANGE.

6. Put the AI Block back into Auto mode.

7. Follow host procedure download schedule into block.

(1)

1, Configure a minimum of four parameters to get a value out of the AI block.

Config uration

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AI2 as Terminal Temperature

1. Put the AI Block into OOS mode.

a. Go to MODE_BLK.TARGET, select OOS (0x80).

2. Go to CHANNEL, select Body Temperature.

3. Go to L_TYPE. select Direct.

4. Go to XD_Scale, select UNITS_INDEX to be °C.

5. Go to OUT_SCALE.

a. Select UNITS_INDEX to be °C. b. Set the 0 and 100 scale to be the same as the SECONDARY_VALUE_RANGE.

6. Put the AI Block back into Auto mode.

7. Follow host procedure download schedule into block.

Filtering

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 (HI_LIM)  High high (HI_HI_LIM)  Low (LO_LIM)  Low low (LO_LO_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:

 HI_PRI  HI_HI_PRI  LO_PRI  LO_LO_PRI

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Alarm priority

Alarms are grouped into five levels of priority:

Configuration

September 2018

Priority number

0 The alarm condition is not used.

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.

Priority description

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

Status options

Status options (STATUS_OPTS) supported by the AI block are shown below.

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 if limited

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 AI Function Block provides added capability through the addition of the following parameters:

ALARM_TYPE

ALARM_TYPE allows one or more of the process alarm conditions detected by the AI function block to be used in setting its OUT_D parameter.

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.

Config uration

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Configuration

September 2018

2.4.4 LCD transducer block

The LCD display meter connects directly to the Rosemount 644 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 display for a brief period before the next parameter is displayed. If the status of the parameter goes bad, the LCD display will also cycle diagnostics following the displayed variable.

Custom meter configuration

Shipped from the factory, Parameter #1 is configured to display the primary variable (temperature) from the LCD transducer block. Parameters 2–4 are not configured. To change the configuration of Parameter #1 or to configure additional parameters 2–4, 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 Rosemount 644 temperature transmitter. If a function block is scheduled in the Rosemount 644 that links a process variable from another device on the segment, that process variable can be displayed on the LCD display.

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DISPLAY_PARAM_SEL

The DISPLAY_PARAM_SEL parameter specifies how many process variables will be displayed. Select up to four display parameters.

BLK_TAG_#

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 1300 AI 1400 PID 1500

BLK_TYPE_#

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_#

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.

1, “#” represents the specified parameter number.

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Configuration

September 2018

UNITS_TYPE_#

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_#

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.

(1)

2.5 Operation and maintenance

2.5.1 Overview

This section contains information on operation and maintenance procedures.

Methods and Manual Operation

Each F

OUNDATION Fieldbus host or configuration tool has different ways of displaying and performing

operations. Some hosts will use Device Descriptions (DD) and DD Methods to complete device configuration and will display data consistently across platforms. The DD can found on

Emerson.com/Rosemount

features.

. There is no requirement that a host or configuration tool support these

The information in this section will describe how to use methods in a general fashion. 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.

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Configuration

Device does not appear on segment.

Problem Identified?

Yes

Perform Recommended Action, see Tabl e 2 -2 .

Check Segment, see Device does not stay on

segment in Tabl e 2-2 for more information.

Problem Identified?

Yes

Perform Recommended Action, see page 10.

If the problem persists contact your local Rosemount representative.

PROBLEMS WITH COMMUNICATIONS

Device does not stay 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 2 -2 for more information.

September 2018

2.5.2 Troubleshooting guides

Figure 2-1. 644 Troubleshooting Flowchart

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Table 2-2. Troubleshooting Guide

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 FOUNDATION Fieldbus Protocol.

(1)

(2)

Cause Recommended actions

Unknown Recycle power to device.

1. Ensure the device is connected to the segment.

No power to device

Segment problems

Electronics failing Replace device.

Incompatible network settings

Incorrect signal levels. Refer to host documentation for procedure.

Excess noise on segment. Refer to host documentation for procedure.

Electronics failing Replace device.

Other Check for water around the transmitter.

2. Check voltage at terminals. There should be 9–32 Vdc.

3. Check to ensure the device is drawing current. There should be approximately 10.5 mA nominal (11 mA max.)

1. Change host network parameters.

2. 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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COMMUNICATIONS ESTABLISHED BUT HAVE

“BLOCK_ERR” OR AN “ALARM” CONDITION.

See “Plantweb Alerts” on page 10

Read the following parameters in the Resource Block to determine the recommended action. BLOCK_ERR (see Tab le 2-8) SUMMARY_STATUS (see Tabl e 2-9 ) DE TAIL ED_ STATUS (see Table 2-10)

Problem Identified?

Yes

Perform Recommended Action, see Table 2-10.

For more detailed information

Perform the following steps in the Sensor Transducer Block to determine the recommended action. BLOCK_ERR (see Tab le 2-3) XD_ERR (see Tab le 2- 4) DETAILED_STATUS (see Tabl e 2-5 ) RECOMMENDED_ACTION (see Tab le 2- 5) SENSOR_DETAILED STATUS (see Tab le 2-5)

If error condition does not exist in the Resource Block then it is a configuration problem, see AI

BLOCK_ERR Conditions in Ta ble 2 -6

Problem Identified?

Yes

If the problem persists contact your local Rosemount representative.

Problem Identified?

Perform Recommended Action, see Ta ble 2 -5 .

Yes

Perform Recommended Action, see Ta ble 2 -7 .

Yes

Perform Recommended Action, see Ta ble 2 -1 .

Problem Identified?

00809-0400-4728, Rev CA

Figure 2-2. Problems with Communications Flowchart

Configuration

September 2018

Config uration

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Configuration

September 2018

2.5.3 Sensor Transducer block

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 to OOS.

2. Set SENSOR_CAL_METHOD to User Trim.

3. Set CAL_UNIT 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.

5. Set values of CAL_POINT_LO 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.

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Note

CAL_POINT_HI must be within PRIMARY_VALUE_RANGE and greater than CAL_POINT_LO + CAL_MIN_SPAN

9. Set SENSOR_CAL_DATE to the current date.

10.Set SENSOR_CAL_WHO to the person responsible for the calibration.

11.Set SENSOR _CAL_LOC to the calibration location.

12.Set MODE_BLK.TARGET 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 to OOS.

2. Set SENSOR_CAL_METHOD to Factory Trim.

3. Set SET_FACTORY_TRIM to Recall.

4. Set SENSOR_CAL_DATE to the current date.

5. Set SENSOR_CAL_WHO to the person responsible for the calibration.

6. Set SENSOR _CAL_LOC to the calibration location.

7. Set MODE_BLK.TARGET to AUTO.

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Note

When sensor type is changed, the transmitter reverts to the factory trim. Changing sensor type causes you to loose any trim performed on the transmitter.

Table 2-3. Sensor Transducer Block BLOCK_ERR Messages

Condition name and description

Other

Out of Service: The actual mode is out of service.

Table 2-4. Sensor Transducer Block XD_ERR Messages

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.

Configuration

September 2018

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.

Diagnostics

Ta bl e 2 - 5 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 Ta b le 2- 5 . Start with the first corrective action and then try the second.

Table 2-5. Sensor Transducer Block STB.SENSOR_DETAILED_ STATUS Messages

STB.SENSOR_DETAILED_STATUS Description

Invalid Configuration Wrong sensor connection with wrong sensor type

ASIC RCV Error

ASIC TX Error The A/D ASIC detected a communication error

ASIC Interrupt Error ASIC interrupts are too fast or slow

Reference Error Reference resistors are greater than 25% of known value

ASIC Configuration Error

Sensor Open Open sensor detected

Sensor Shorted Shorted sensor detected

The micro detected a chksum or start/stop bit failure with ASIC communication

Citadel registers were not written correctly. (Also CALIBRATION_ERR)

Config uration

Terminal Temperature Failure Open PRT detected

Sensor Out of Operating Range Sensor readings have gone beyond PRIMRY_VALUE_RANGE values

Sensor beyond operating limits

Sensor readings have gone below 2% of lower range or above 6% of upper range of sensor

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Table 2-5. Sensor Transducer Block STB.SENSOR_DETAILED_ STATUS Messages

STB.SENSOR_DETAILED_STATUS Description

Ter minal Temp eratu re O ut of Operating Range

Terminal Temperature Beyond Operating Limits

Sensor Degraded

Sensor Error

2.5.4 Analog input function block

Status

Along with the measured or calculated PV value, every FOUNDATION Fieldbus block passes an additional parameter called STATUS. The PV and STATUS are passed from the Transducer Block to the Analog Input Block. The STATUS can be one of the following: GOOD, BAD, or UNCERTAIN. When there are no problems detected by the self-diagnostics of the block, the STATUS will be GOOD. If a problem occurs with the hardware in the device or the quality of the process variable is compromised for some reason, the STATUS will become either BAD or UNCERTAIN depending upon the nature of the problem. It is important that the Control Strategy that makes use of the Analog Input Block is configured to monitor the STATUS and take action where appropriate when the STATUS is no longer GOOD.

Simulation

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)

For RTDs, this is excessive EMF detected. This is thermocouple degradation for thermocouples.

The user trim has failed due to excessive correction or sensor failure during the trim method

Simulate replaces the channel value coming from the sensor transducer 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.

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Table 2-6. AI BLOCK_ERR Conditions

Configuration

September 2018

Condition

number

0 Other

3 Simulate Active: Simulation is enabled and the block is using a simulated value in its execution.

14 Power Up

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

Condition name and description

Block Configuration Error: The selected channel carries a measurement that is incompatible with the engineering units selected in XD_SCALE, the L_T YPE parameter is not configured, or CHANNEL = zero.

Input Failure/Process Variable has Bad Status: The hardware is bad, or a bad status is being simulated.

Table 2-7. Troubleshooting the AI Block

Symptom Possible causes Recommended actions

Bad or no temperature readings (Read the AI “BLOCK_ERR” parameter)

BLOCK_ERR reads OUT OF SERVICE (OOS)

BLOCK_ERR reads CONFIGURATION ERROR

BLOCK_ERR reads POWERUP

BLOCK_ERR reads BAD INPUT

No BLOCK_ERR but readings are not correct. If using Indirect mode, scaling could be wrong.

1. AI Block target mode target mode set to OOS.

2. Resource Block OUT OF SERVICE.

1. Check CHANNEL parameter (see “CHANNEL” on page 14)

2. Check L_TYPE parameter (see “L_TYPE” on page 14)

3. Check XD_SCALE engineering units. (see “XD_SCALE and

OUT_SCALE” on page 14

Download Schedule into block. Refer to host for downloading procedure.

1. Sensor Transducer Block Out Of Service (OOS)

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 14)

No BLOCK_ERR. Sensor needs to be calibrated or Zero trimmed.

OUT parameter status reads UNCERTAIN and substatus reads EngUnitRangViolation.

Out_ScaleEU_0 and EU_100 settings are incorrect.

2.5.5 Resource block

This section describes error conditions found in the Resource block. Read Ta bl e 2 - 8 through Tab l e 2 -1 0 to determine the appropriate corrective action.

Block errors

Ta bl e 2 - 8 lists conditions reported in the BLOCK_ERR parameter.

Config uration

See Section 2: Configuration to determine the appropriate trimming or calibration procedure.

See “XD_SCALE and OUT_SCALE” on page 14.

Page 32

Configuration

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Table 2-8. Resource Block BLOCK_ERR Messages

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.

Table 2-9. Resource Block SUMMARY_STATUS Messages

Condition name

No repair needed

Repairable

Call Service Center

Table 2-10. Resource Block RB.DETAILED_STATUS

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

Non-volatile memory integrity error Invalid checksum on a block of NV data.

ROM integrity error Invalid application code checksum.

Lost deferred NV data

NV Writes Deferred

2.5.6 LCD transducer block

This section describes error conditions found in the LCD Transducer Block. Read Table 2-11 on page 27 and to determine the appropriate corrective action.

Verify the manufacturing block revision and the hardware revision are correct/compatible with the software revision.

Device has been power-cycled while non-volatile writes were being deferred to prevent premature memory failure, the write operations have been deferred.

A high number of writes has been detected to non-volatile memory. To prevent premature failure, the write operations have been deferred.

Configuration

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Self test procedure for the LCD display

The SELF_TEST parameter in the Resource block will test LCD display 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, then 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 display screen when you are doing this. All of the segments should light up.

4. Put the Resource block back into “AUTO.”

Table 2-11. LCD Transducer Block BLOCK_ERR messages

Condition name and description

Other

Out of Service: The actual mode is out of service.

Configuration

September 2018

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 AI.OUT readings do not match.

“644” is being displayed or not all of the values are being displayed.

The display reads OOS.

The display is hard to read.

One or more of the display parameters are not configured properly.

The OUT_SCALE of the AI block is not configured properly.

The LCD block parameter “DISPLAY_PARAMETER_SELECT is not properly configured.

The resource and or the LCD Transducer block are OOS.

Some of the LCD segments may have gone bad.

Device is out o the temperature limit for the LCD display. (–20 to 80 °C)

See “LCD transducer block” on

page 18.

See “Analog input function block” on

page 24.

See “LCD transducer block (index

number 1200)” on page 9.

Verify that both blocks are in “AUTO.”

See XXXX (Self Test). If some of the segment is bad, replace the LCD display.

Check ambient temperature of the device.

Config uration

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Configuration

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Configuration

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Section 3 Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 32

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 35

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 38

3.1 Overview

Installation

September 2018

The information in this section covers installation considerations for the Rosemount™ 644 Temperature Transmitter with F describe recommended mounting and wiring procedures for initial installation. Dimensional drawings for Rosemount 644 Transmitter mounting configurations are included in the Product Data Sheet

OUNDATION Fieldbus

3.2 Safety messages

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

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 connecting a 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.

 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.

™

Protocol. A Quick Start Guide is shipped with every transmitter to

Installation

Page 36

Installation

START

HERE

Bench

Calibration?

BASIC SETUP

Set Sensor Type

Set Number of Wires

Set Units

Set Range Values

Set Damping

VERIFY

Simulate Sensor Input

Within

Specifications?

Refer to Section 2: Configuration

FIELD INSTALL

Mount Transmitter

Wire Transmitter

Power Transmitter

FINISHED

September 2018

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Figure 3-1. Installation Flowchart

Installation

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3.3 Mounting

Mount the transmitter at a high point in the conduit run to prevent moisture from draining into the transmitter housing.

The Rosemount 644 head mount installs:

 In a connection head or universal head mounted directly on a sensor assembly  Apart from a sensor assembly using a universal head  To a DIN rail using an optional mounting clip.

Mounting a Rosemount 644H to a DIN rail

To attach a head mount transmitter to a DIN rail, assemble the appropriate rail mounting kit (part number 00644-5301-0010) to the transmitter as shown in Figure 3-2.

Figure 3-2. Assembling Rail Clip Hardware to a 644H

G-rail (asymmetric) Top hat rail (symmetric)

Installation

September 2018

A. Mounting hardware B. Transmitter C. Rail clip

Note

Kit includes mounting hardware and both types of rail kits.

Retrofitting a Rosemount 644H for use in an existing threaded sensor connection head

To mount a Rosemount 644H in an existing threaded sensor connection head (former option code L1), order the Rosemount 644H retrofit kit (part number 00644-5321-0010). The retrofit kit includes a new mounting bracket and all associated hardware necessary to facilitate the installation of the Rosemount 644H in the existing head. See Figure 3-3 on page 32.

Installation

Page 38

Installation

September 2018

Figure 3-3. Assembling 644H for Use in an Existing L1 Connection Head

A. Existing threaded sensor connection head (former option code L1) B. Kit includes replacement bracket and screws

3.4 Installation

3.4.1 Typical European installation

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00809-0400-4728, Rev CA

Head mount transmitter with DIN plate style sensor

1. Attach the thermowell to the pipe or process container wall. Install and tighten the thermowell before applying process pressure.

2. Assemble the transmitter to the sensor. Push the transmitter mounting screws through the sensor mounting plate and insert the snap rings (optional) into the transmitter mounting screw groove.

3. Wire the sensor to the transmitter (see Figure 3-7 on page 36).

4. Insert the transmitter-sensor assembly into the connection head. Thread the transmitter mounting screw into the connection head mounting holes. Assemble the extension to the connection head. Insert the assembly into the thermowell.

5. Attach a cable gland into the shielded cable.

6. Insert the shielded cable leads into the connection head through the cable entry. Connect and tighten the cable gland.

7. Connect the shielded power cable leads to the transmitter power terminals. Avoid contact with sensor leads and sensor connections.

8. Install and tighten the connection head cover. Enclosure covers must be fully engaged to meet explosion-proof requirements.

A. Rosemount 644H transmitter D. Transmitter mounting screws

B. Connection head E. Integral mount sensor with flying leads

C. Thermowell F. Ex tens ion

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3.4.2 Typical North American installation

Head mount transmitter with threaded sensor

1. Attach the thermowell to the pipe or process container wall. Install and tighten thermowells before applying process pressure.

2. Attach necessary extension nipples and adapters to the thermowell. Seal the nipple and adapter threads with silicone tape.

3. Screw the sensor into the thermowell. Install drain seals if required for severe environments or to satisfy code requirements.

4. To verify the correct installation of integral transient protection (option code T1) on the Rosemount 644 Transmitter, confirm the following steps have been completed:

a. Ensure the transient protector unit is firmly connected to the transmitter puck assembly. b. Ensure the transient protector power leads are adequately secured under the transmitter power

terminal screws.

c. Verify the transient protector’s ground wire is secured to the internal ground screw found within

the universal head.

Installation

September 2018

Note

The transient protector requires the use of an enclosure of at least 3.5-in (89mm) in diameter.

5. Pull the sensor wiring leads through the universal head and transmitter. Mount the transmitter in the universal head by threading the transmitter mounting screws into the universal head mounting holes.

6. Mount the transmitter-sensor assembly into the thermowell. Seal adapter threads with silicone tape.

7. Install conduit for field wiring to the conduit entry of the universal head. Seal conduit threads with silicone tape.

8. Pull the field wiring leads through the conduit into the universal head. Attach the sensor and power leads to the transmitter. Avoid contact with other terminals.

9. Install and tighten the universal head cover. Enclosure covers must be fully engaged to meet explosion-proof requirements.

Installation

A. Threaded thermowell D. Universal head B. Threaded style sensor E. Conduit entry C. Standard extension

Page 40

Installation

September 2018

3.4.3 LCD display installation

The LCD display provides local indication of the transmitter output and abbreviated diagnostic messages governing transmitter operation. Transmitters ordered with the LCD display are shipped with the meter installed. After-market installation of the meter can be performed if the transmitter has a meter connector (transmitter revision 5.5.2 or later). After-market installation requires the meter kit (part number 00644-4430-0001), which includes:

 LCD display assembly (includes LCD display, meter spacer, and two screws)  Meter cover with O-ring in place

Figure 3-4. Installing the LCD Display

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00809-0400-4728, Rev CA

A. LCD display B. 10-pin connector C. Meter space

D. Captive mounting screws and springs E. Rosemount 644H

Use the following procedure to install the meter.

1. If the transmitter is installed in a loop, secure the loop and disconnect the power. If the transmitter is installed in an enclosure, remove the cover from the enclosure.

2. Decide meter orientation (the meter can be rotated in 90° increments). To change meter orientation, remove the screws located above and below the display screen. Lift the meter off the meter spacer. Remove the 8-pin plug and re-insert it in the location that will result in the desired viewing orientation.

3. Reattach the meter to the meter spacer using the screws. If the meter was rotated 90° from its original position, it will be necessary to remove the screws from their original holes and re-insert them in the adjacent screw’s holes.

4. Line up the 10-pin connector with the 10-pin socket and push the meter into the transmitter until it snaps into place.

5. Attach the meter cover; tighten at least one-third turn after the O-ring contacts the transmitter housing. The cover must be fully engaged to meet explosion-proof requirements.

6. Use a Field Communicator, AMS software, or a F

OUNDATION Fieldbus Communication tool to configure

the meter to the desired display.

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)

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3.5 Wiring

All power to the transmitter is supplied over the signal wiring. Use ordinary copper wire of sufficient size to ensure that the voltage across the transmitter power terminals does not drop below 9 Vdc.

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

Note

Do not apply high voltage (e.g., ac line voltage) to the transmitter terminals. Abnormally high voltage can damage the unit. (Sensor and transmitter power terminals are rated to 42.4 Vdc. A constant 42.4 volts across the sensor terminals may damage the unit.)

The transmitters will accept inputs from a variety of RTD and thermocouple types. Refer to Figure 3-5 on

page 35 when making sensor connections. Refer to Figure 3-6 on page 36 for F

installations.

Use the following steps to wire the power and sensor to the transmitter:

1. Remove the terminal block cover (if applicable).

Installation

September 2018

OUNDATION Fieldbus

2. Connect the positive power lead to the “+” terminal. Connect the negative power lead to the “–” terminal (see Figure 3-7 on page 36).

If a transient protector is being used, the power leads will now be connected to the top of the transient protector unit.

3. Tighten the terminal screws. When tightening the sensor and power wires, the max torque is 6 in-lb (0.7 N-m).

4. Reattach and tighten the cover (if applicable).

5. Apply power (see "Power supply").

Figure 3-5. Transmitter Power, Communication, and Sensor Terminals

Rosemount 644H

A. Sensor terminals B. Communication terminals C. Power terminals

Installation

Page 42

Installation

Power supply

6234 ft. (1900 m) max

(depending upon cable characteristics)

Integrated power conditioner

and filter

Ter mi na to r s

(Spur)

(Trunk)

(The power supply,

filter, first terminator,

and configuration

tool are typically

located in the control

room.)

Devices 1

through 16

OUNDATION

Fieldbus

configuration

tool

Power/

signal wiring

2-wire

RTD and 

3-wire RTD

(1)

and 

4-wire RTD

and 

T/C

and mV

1234

September 2018

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Figure 3-6. Connecting a FOUNDATION Fieldbus Host System to a Transmitter Loop

3.5.1 Sensor connections

The Rosemount 644 is compatible with a number of RTD and thermocouple sensor types. Figure 3-7 shows the correct input connections to the sensor terminals on the transmitter. To ensure a proper sensor connection, anchor the sensor lead wires into the appropriate compression terminals and tighten the screws.

Figure 3-7. Sensor Wiring Diagrams

Rosemount 644 sensor connections diagram

1. Emerson

™

provides 4-wire sensors for all single element RTDs. Use these RTDs in 3-wire configurations by leaving the unneeded

leads disconnected and insulated with electrical tape.

(1)

Thermocouple or millivolt inputs

The thermocouple can be connected directly to the transmitter. Use appropriate thermocouple extension wire if mounting the transmitter remotely from the sensor. Make millivolt inputs connections with copper wire. Use shielding for long runs of wire.

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Reference Manual

Basic error

Imbalance of lead wires

PtRo

×()

------------------------------------------------------------

Error due to amb. temp. variation

()ΔT

amb

()× Imbalance of lead wires()×

()Ro()×

---------------------------------------------------------------- ------------------------------------------------- -

00809-0400-4728, Rev CA

RTD or ohm inputs

The transmitters will accept a variety of RTD configurations, including 2-wire, 3-wire, or 4-wire. If the transmitter is mounted remotely from a 3-wire or 4-wire RTD, it will operate within specifications, without recalibration, for lead wire resistances of up to 60 ohms per lead (equivalent to 6,000 ft. of 20 AWG wire). In this case, the leads between the RTD and transmitter should be shielded. If using only two leads, both RTD leads are in series with the sensor element, so significant errors can occur if the lead lengths exceed 3 ft. of 20 AWG wire (approximately 0.05 °C/ft). For longer runs, attach a third or fourth lead as described above.

Sensor lead wire resistance effect– RTD input

When using a 4-wire RTD, the effect of lead resistance is eliminated and has no impact on accuracy. However, a 3-wire sensor will not fully cancel lead resistance error because it cannot compensate for imbalances in resistance between the lead wires. Using the same type of wire on all three lead wires will make a 3-wire RTD installation as accurate as possible. A 2-wire sensor will produce the largest error because it directly adds the lead wire resistance to the sensor resistance. For 2- and 3-wire RTDs, an additional lead wire resistance error is induced with ambient temperature variations. The table and the examples shown below help quantify these errors.

Table 3-1. Examples of Approximate Basic Error

Installation

September 2018

Sensor input Approximate basic error

4-wire RTD None (independent of lead wire resistance)

3-wire RTD

2-wire RTD 1.0 Ω in reading per ohm of lead wire resistance

± 1.0 Ω in reading per ohm of unbalanced lead wire resistance (Unbalanced lead wire resistance = maximum imbalance between any two leads).

Examples of approximate lead wire resistance effect calculations

Given:

Total cable length: 150 m

Imbalance of the lead wires at 20 °C: 1.5 Ω

Resistance/length (18 AWG Cu): 0.025 Ω/m °C

Temperature coefficient of Cu (αCu): 0.039 Ω/Ω °C

Temperature coefficient of Pt (αPt): 0.00385 Ω/Ω °C

Change in ambient temperature (ΔT

RTD resistance at 0 °C (Ro): 100 Ω (for Pt 100 RTD)

 Pt100 4-wire RTD: No lead wire resistance effect.  Pt100 3-wire RTD:

): 25 °C

amb

Installation

Page 44

Installation

Basic error

0.5 Ω

0.00385 Ω / Ω °C()100 Ω()×

-------------------------------------------------------------- ---------------- -

1.3 °C==

0.0039 Ω / Ω °C()25 °C()× 0.5 Ω()×

0.00385 Ω / Ω °C()100Ω()×

------------------------------------------------------------- -------------------------------------- -

0.1266 °C±= Error due to amb. temp. var. of 25 °C±=

Basic error

lead wire resistance

PtRo

×()

--------------------------------------------------

Error due to amb. temp. variation

()  ΔT

amb

()  lead wire resistance()

()  Ro()

------------------------------ ------------ ----------- ------------ ------------- ------------- ------------- ------=

Basic error

7.5 Ω

0.00385 Ω / Ω °C()

 100 Ω()

----------------------------- ------------- ---------- ------------- ------------- -----19.5 °C==

0.0039 Ω / Ω °C()  25 °C()  7.5 Ω()

0.00385 Ω / Ω °C()

 100Ω()

------------------------------- ------------ ----------- ------------ ------------- ------------- ------------- 1 . 9 ° C±= Error due to amb. temp. var. of 25 °C±=

September 2018

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Lead wire imbalance seen by the transmitter = 0.5 Ω

 Pt100 2-wire RTD:

Lead wire resistance seen by the transmitter = 150 m × 2 wires × 0.025

3.6 Power supply

FOUNDATION Fieldbus installation

Powered over FOUNDATION Fieldbus with standard Fieldbus power supplies. The transmitter operates between 9.0 and 32.0 Vdc, 11 mA maximum. Transmitter power terminals are rated to 42.4 Vdc.

The power terminals on the Rosemount 644 with F

3.6.1 Ground the transmitter

The transmitter will operate with the current signal loop either floating or grounded. However, the extra noise in floating systems affects many types of readout devices. If the signal appears noisy or erratic, grounding the current signal loop at a single point may solve the problem. The best place to ground the loop is at the negative terminal of the power supply. Do not ground the current signal loop at more than one point.

Ω/m = 7.5 Ω

OUNDATION Fieldbus are polarity insensitive.

The transmitter is electrically isolated to 500 Vdc/ac rms (707 Vdc), so the input circuit may also be grounded at any single point. When using a grounded thermocouple, the grounded junction serves as this point.

Neither side of the loop should be grounded on F be grounded.

Note

Do not ground the signal wire at both ends.

Ungrounded thermocouple, mV, and RTD/Ohm inputs

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

OUNDATION Fieldbus devices. Only the shield wire should

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Transmitter

Shield ground point

00809-0400-4728, Rev CA

Option 1

1. Connect 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 shield at the power supply end only.

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

Installation

September 2018

A. Sensor wires B. Transmitter

C. Shield ground point D. F

OUNDATION Fieldbus segment

5. Connect shields together, electrically isolated from the transmitter.

Option 2

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

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

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

A. Sensor wires B. Transmitter

C. Shield ground point D. F

OUNDATION Fieldbus segment

Option 3

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

Installation

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

3. Do not connect the signal wiring shield to the sensor wiring shield.

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

A. Sensor wires B. Transmitter

C. Shield ground point D. F

OUNDATION Fieldbus segment

Grounded thermocouple inputs

1. Ground sensor wiring shield at the sensor.

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

3. Do not connect the signal wiring shield to the sensor wiring shield.

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

A. Sensor wires B. Transmitter

C. Shield ground point D. F

OUNDATION Fieldbus segment

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Reference Data

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Appendix A Specifications and Reference Data

Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 41

Ordering Information, Specifications, and Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 41

A.1 Product Certifications

To view curren t Rosemount™ 644 Product Certifications, follow these steps:

1. Go to Emerson.com/Rosemount/Rosemount-644

2. Scroll as needed to the green menu bar and click Documents & Drawings.

3. Click Manuals & Guides.

4. Select the appropriate Quick Start Guide.

A.2 Ordering Information,

Specifications, and Drawings

To view current Rosemount 644 Ordering Information, Specifications, and Drawings, follow these steps:

1. Go to Emerson.com/Rosemount/Rosemount-644

2. Scroll as needed to the green menu bar and click Documents & Drawings.

3. For installation drawings, click Drawings & Schematics and select the appropriate document.

4. For ordering information, specifications, and dimensional drawings, click Data Sheets & Bulletins and select the appropriate Product Data Sheet.

Reference Data

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Reference Data

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Reference Data

Page 49

Foundation Fieldbus Block Information

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Appendix B FOUNDATION™ Fieldbus Block

Information

Resource block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 43

Sensor transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 47

Analog Input (AI) function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51

LCD transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54

PID block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 56

B.1 Resource block

This section contains information on the Rosemount™ 644 Resource Block. Descriptions of all resource block parameters, errors, and diagnostics are included. Also the modes, alarm detection, status handling, and troubleshooting are discussed.

Table B-1. Resource Block Parameters and Descriptions

Parameter

ACK_OPTION 38

ADVISE_ACTIVE 82 Enumerated list of advisory conditions within a device.

ADVISE_ALM 83

ADVISE_ENABLE 80

ADVISE_MASK 81

ADVISE_PRI 79 Designates the alarming priority of the ADVISE_ALM.

ALARM_SUM 37

ALERT_KEY 04 The identification number of the plant unit.

BLOCK_ALM 36

Index

number

Description

Selection of whether alarms associated with the function block will be automatically acknowledged.

Alarm indicating advisory alarms. These conditions do not have a direct impact on the process or device integrity.

Enabled ADVISE_ALM alarm conditions. Corresponds bit for bit to the ADVISE_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected.

Mask of ADVISE_ALM. Corresponds bit of bit to ADVISE_ACTIVE. A bit on means that the condition is masked out from alarming.

The current alert status, unacknowledged states, unreported states, and disabled states of the alarms associated with the function block.

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

B.1.1 Definition

The resource block defines the physical resources of the device. The resource block also handles functionality that is common across multiple blocks. The block has no linkable inputs or outputs.

B.1.2 Parameters and descriptions

The table below lists all of the configurable parameters of the Resource Block, including the descriptions and index numbers for each.

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Table B-1. Resource Block Parameters and Descriptions

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September 2018

Parameter

BLOCK_ERR 06

CLR_FSTATE 30

CONFIRM_TIME 33

CYCLE_SEL 20

CYCLE_TYPE 19 Identifies the block execution methods available for this resource.

DD_RESOURCE 09

DD_REV 13

DEFINE_WRITE_LOCK 60

DETAILED_STATUS 55 Indicates the state of the transmitter. See Resource Block detailed status codes.

Index

number

Description

This parameter reflects the error status associated with the hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

Writing a Clear to this parameter will clear the device FAIL_SAFE if the field condition has cleared.

The time the resource will wait for confirmation of receipt of a report before trying again. Retry will not happen when CONFIRM_TIME=0.

Used to select the block execution method for this resource. The 644 supports the following: Scheduled: Blocks are only executed based on the function block schedule. Block Execution: A block may be executed by linking to another blocks completion.

String identifying the tag of the resource which contains the Device Description for this resource.

Revision of the DD associated with the resource - used by an interface device to locate the DD file for the resource.

Allows the operator to select how WRITE_LOCK behaves. The initial value is “lock everything”. If the value is set to “lock only physical device” then the resource and transducer blocks of the device will be locked but changes to function blocks will be allowed.

DEV_REV 12

DEV_STRING 43

DEV_TYPE 11

DIAG_OPTIONS 46 Indicates which diagnostics licensing options are enabled.

DISTRIBUTOR 42 Reserved for use as distributor ID. No Foundation enumerations defined at this time.

DOWNLOAD_MODE 67

FAU LT_ STATE 28

FAI LE D_A CTI VE 72 Enumerated list of failure conditions within a device.

FAI LE D_ AL M 73 Alarm indicating a failure within a device which makes the device non-operational.

FAI LE D_E NAB LE 70

FAI LE D_M AS K 71

Manufacturer revision number associated with the resource - used by an interface device to locate the DD file for the resource.

This is used to load new licensing into the device. The value can be written but will always read back with a value of 0.

Manufacturer’s model number associated with the resource - used by interface devices to locate the DD file for the resource.

Gives access to the boot block code for over-the-wire downloads. 0 = Uninitialized 1 = Run mode 2 = Download mode

Condition set by loss of communication to an output block, fault promoted to an output block or physical contact. When FAIL_SAFE condition is set, then output function blocks will perform their FAIL_SAFE actions.

Enabled FAILED_ALM alarm conditions. Corresponds bit for bit to the FAILED_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected.

Mask of FAILED_ALM. Corresponds bit of bit to FAILED_ACTIVE. A bit on means that the condition is masked out from alarming.

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Table B-1. Resource Block Parameters and Descriptions

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Parameter

FAI LE D_P RI 69 Designates the alarming priority of the FAILED_ALM.

FB_OPTIONS 45 Indicates which function block licensing options are enabled.

FEATURES 17

FEATURE_SEL 18 Used to select resource block options.

FINAL_ASSY_NUM 54 The same final assembly number placed on the neck label.

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

FREE_TIME 25 Percent of the block processing time that is free to process additional blocks.

GRANT_DENY 14

HARD_TYPES 15 The types of hardware available as channel numbers.

HARDWARE_REV 52 Hardware revision of the hardware that has the resource block in it.

ITK_VER 41

LIM_NOTIFY 32 Maximum number of unconfirmed alert notify messages allowed.

MAINT_ACTIVE 77 Enumerated list of maintenance conditions within a device.

MAINT_ALM 78

MAINT_ENABLE 75

MAINT_MASK 76

Index

number

Description

Used to show supported resource block options. See Error! Reference source not found. The supported features are: SOFT_WRITE_LOCK_SUPPORT, HARD_WRITE_LOCK_SUPPORT, REPORTS, and UNICODE.

Options for controlling access of host computers and local control panels to operating, tuning, and alarm parameters of the block. Not used by device.

Major revision number of the inter operability test case used in certifying this device as interoperable. The format and range are controlled by the Fieldbus Foundation.

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

Enabled MAINT_ALM alarm conditions. Corresponds bit for bit to the MAINT_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected. A bit off means the corresponding alarm condition is disabled and will not be detected.

Mask of MAINT_ALM. Corresponds bit of bit to MAINT_ACTIVE. A bit on means that the condition is masked out from alarming.

MAINT_PRI 74 Designates the alarming priority of the MAINT_ALM

MANUFAC_ID 10

MAX_NOTIFY 31 Maximum number of unconfirmed notify messages possible.

MEMORY_SIZE 22

MESSAGE_DATE 57 Date associated with the MESSAGE_TEXT parameter.

MESSAGE_TEXT 58

MIN_CYCLE_T 21 Time duration of the shortest cycle interval of which the resource is capable.

MISC_OPTIONS 47 Indicates which miscellaneous licensing options are enabled.

MODE_BLK 05

Manufacturer identification number – used by an interface device to locate the DD file for the resource.

Available configuration memory in the empty resource. To be checked before attempting a download.

Used to indicate changes made by the user to the device's installation, configuration, or calibration.

The actual, target, permitted, and normal modes of the block: Target: The mode to “go to” Actual: The mode the “block is currently in” Permitted: Allowed modes that target may take on Normal: Most common mode for actual

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Table B-1. Resource Block Parameters and Descriptions

FOUNDATION Fieldbus Block Information

September 2018

Parameter

NV_CYCLE_T 23

OUTPUT_BOARD_SN 53 Output board serial number.

RB_SFTWR_REV_ALL 51

RB_SFTWR_REV_BUILD 50 Build of software that the resource block was created with.

RB_SFTWR_REV_MAJOR 48 Major revision of software that the resource block was created with.

RB_SFTWR_REV_MINOR 49 Minor revision of software that the resource block was created with.

RECOMMENDED_ACTION 68 Enumerated list of recommended actions displayed with a device alert.

RESTART 16

RS_STATE 07 State of the function block application state machine.

Index

number

Description

Minimum time interval specified by the manufacturer for writing copies of NV parameters to non-volatile memory. Zero means it will never be automatically copied. At the end of NV_CYCLE_T, only those parameters which have changed need to be updated in NVRAM.

The string will contains the following fields: Major rev: 1-3 characters, decimal number 0-255 Minor rev: 1-3 characters, decimal number 0-255 Build rev: 1-5 characters, decimal number 0-255 Time of build: 8 characters, xx:xx:xx, military time Day of week of build: 3 characters, Sun, Mon,... Month of build: 3 characters, Jan, Feb. Day of month of build: 1-2 characters, decimal number 1-31 Year of build: 4 characters, decimal Builder: 7 characters, login name of builder

Allows a manual restart to be initiated. Several degrees of restart are possible. They are the following: 1 Run – nominal state when not restarting. 2 Restart resource – not used. 3 Restart with defaults – set parameters to default values. See START_WITH_DEFAULTS below for which parameters are set. 4 Restart processor – does a warm start of CPU.

SAVE_CONFIG_BLOCKS 62

SAVE_CONFIG_NOW 61 Allows the user to optionally save all non-volatile information immediately.

SECURITY_IO 65 Status of security switch.

SELF_TEST 59 Instructs resource block to perform self-test. Tests are device specific.

SET_FSTATE 29 Allows the FAIL_SAFE condition to be manually initiated by selecting Set.

SHED_RCAS 26

SHED_ROUT 27

SIMULATE_IO 64 Status of simulate switch.

SIMULATE_STATE 66

ST_REV 01 The revision level of the static data associated with the function block.

Foundation Fieldbus Block Information

Number of EEPROM blocks that have been modified since last burn. This value will count down to zero when the configuration is saved.

Time duration at which to give up on computer writes to function block RCas locations. Shed from RCas shall never happen when SHED_ROUT = 0

Time duration at which to give up on computer writes to function block ROut locations. Shed from ROut shall never happen when SHED_ROUT = 0

The state of the simulate switch: 0 = Uninitialized 1 = Switch off, simulation not allowed 2 = Switch on, simulation not allowed (need to cycle jumper/switch) 3 = Switch on, simulation allowed

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Parameter

START_WITH_DEFAULTS 63

STRATEGY 03 The strategy field can be used to identify grouping of blocks.

SUMMARY_STATUS 56 An enumerated value of repair analysis.

TAG _D E SC 02 The user description of the intended application of the block.

TEST_RW 08 Read/write test parameter - used only for conformance testing.

UPDATE_EVT 35 This alert is generated by any change to the static data.

WRITE_ALM 40 This alert is generated if the write lock parameter is cleared.

WRITE_LOCK 34

WRITE_PRI 39 Priority of the alarm generated by clearing the write lock.

XD_OPTIONS 44 Indicates which transducer block licensing options are enabled.

Index

number

Description

0 = Uninitialized 1 = do not power-up with NV defaults 2 = power-up with default node address 3 = power-up with default pd_tag and node address 4 = power-up with default data for the entire communications stack (no application data)

If set, no writes from anywhere are allowed, except to clear WRITE_LOCK. Block inputs will continue to be updated.

B.2 Sensor transducer block

The transducer block contains the actual measurement data, including a pressure and temperature reading. The transducer block includes information about sensor type, engineering units, linearization, reranging, temperature compensation, and diagnostics.

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B.2.1 Parameters and descriptions

Table B-2. Sensor Transducer Block Parameters and Descriptions

FOUNDATION Fieldbus Block Information

September 2018

Parameter

ALERT_KEY 04 The identification number of the plant unit.

BLOCK_ALM 08

BLOCK_ERR 06

CAL_MIN_SPAN 18

CAL_POINT_HI 16 The highest calibrated value.

Index

number

Description

This parameter reflects the error status associated with the hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

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

Notes on how changing this parameter effects transmitter operation

No effect on operation of transmitter but may affect the way alerts are sorted on the host end.

No effect.

Assigns a value to the calibration high point.

CAL_POINT_LO 17 The lowest calibrated value.

CAL_UNIT 19

COLLECTION_DI RECTORY 12

ASIC_REJECTION

FACTORY_CAL_RECALL 32

USER_2W_OFFSET 36

INTER_DETECT_THRESH 35

Foundation Fieldbus Block Information

The device description engineering units code index for the calibration values.

A directory that specifies the number, starting indices, and DD Item ID's of the data collections in each transducer.

Indicates the type of material that the drain vents on the flange are made of. See Drain Vent Material Codes.

Recalls the sensor calibration set at the factory.

Indicates the type of material that the flange is made of. See Flange Material Codes.

Indicates the type of flange that is attached to the device. See Flange Type Codes.

Assigns a value to the calibration low point.

Device must be calibrated using the appropriate engineering units.

No effect.

N/A

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Table B-2. Sensor Transducer Block Parameters and Descriptions

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Parameter

MODE_BLK 05

CALIBRATOR_MODE 33 Indicates the type of sensor module. N/A

PRIMARY_VALUE 14

PRIMARY_VALUE_RANGE 15

PRIMARY_VALUE_TYPE 13

SENSR_DETAILED_STATUS 37

CAL_VAN_DUSEN_COEFF 38

SECONDARY_VALUE_RANG 30 The secondary value, related to the sensor. No effect.

Index

number

Description

The actual, target, permitted, and normal modes of the block. Target: The mode to “go to” Actual: The mode the “block is currently in” Permitted: Allowed modes that target may take on Normal: Most common mode for target

The measured value and status available to the function block.

The high and low range limit values, the engineering unit code, and the number of digits to the right of the decimal point to be used to display the final value. Valid engineering units are the following: 1000 = deg K 1001 = deg C 1002 = deg F 1003 = deg R 1243 = millivolt 1281 = ohm

Type of measurement represented by the primary value. 104 = Process Temperature

Indicates the number of remote seals that are attached to the device. See Remote Seal Number Codes.

Indicates the type of remote seals that are attached to the device. See Remote Seal Type Codes.

Notes on how changing this parameter effects transmitter operation

Assigns the device mode.

No effect.

N/A

Engineering units to be used with

SECONDARY_VALUE_UNIT 29

SENSOR_CAL_DATE 25

SENSOR_CAL_LOC 24

SENSOR_CAL_METHOD 23 The method of last sensor calibration. No effect.

OPEN_SNSR_HOLDOFF 34 The type of last sensor calibration. No effect.

SENSOR_CAL_WHO 26

SECONDARY_VALUE. 1001 °C 1002 °F

The last date on which the calibration was performed.This is intended to reflect the calibration of that part of the sensor that is usually wetted by the process.

The last location of the sensor calibration. This describes the physical location at which the calibration was performed.

The name of the person responsible for the last sensor calibration.

No effect.

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Table B-2. Sensor Transducer Block Parameters and Descriptions

FOUNDATION Fieldbus Block Information

September 2018

Parameter

SECONDARY_VALUE 28

SENSOR_CONNECTION 27

SENSOR_RANGE 21

SENSOR_SN 22 Serial number of the sensor. No effect.

SENSOR_TYPE 20

ST_REV 01

STRATEGY 03

TAG_DESC 02

SESNOR_1_DAMPING 31

TRANSDUCER_DIRECTORY 09

TRANSDUCER_TYPE 10 Identifies the transducer that follows. No effect.

Index

number

Description

Defines the type of fill fluid used in the sensor.

Defines the construction material of the isolating diaphragms.

The high and low range limit values, the engineering units code, and the number of digits to the right of the decimal point for the sensor.

Type of sensor connected with the transducer block.

The revision level of the static data associated with the function block.

The strategy field can be used to identify grouping of blocks.

The user description of the intended application of the block.

Indicates the state of the transmitter. The parameter contains specific codes relating to the transducer block and the pressure sensor specifically.

Directory that specifies the number and starting indices of the transducers in the transducer block.

Notes on how changing this parameter effects transmitter operation

No effect.

UPDATE_EVT 07

XD_ERROR 11

Foundation Fieldbus Block Information

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

Provides additional error codes related to transducer blocks.

No effect.

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Analog

Measurement

Access

Analog

Meas.

CHANNEL

SIMULATE

OUT_SCALE

XD_SCALE

FIELD_VAL

L_TYPE

IO_OPTS

PV_FTIME

MODE

STATUS_OPTS

HI_HI_LIM

HI_LIM

LO_LO_LIM

LO_LIM

ALARM_HYS

ALARM_TYPE

OUT_D

OUT

Convert

Cutoff Filter

Status

Calc.

Alarm

Detection

LOW_CUT

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B.3 Analog Input (AI) function block

The Analog Input (AI) function block processes field device measurements 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 measuring device may have several measurements or derived values available in different channels. Use the channel number to define the variable that the AI block processes.

The AI block supports alarming, signal scaling, signal filtering, signal status calculation, mode control, and simulation. In Automatic mode, the block’s output parameter (OUT) reflects the process variable (PV) value and status. In Manual mode, OUT may be set manually. The Manual mode is reflected on the output status. A discrete output (OUT_D) is provided to indicate whether a selected alarm condition is active. Alarm detection is based on the OUT value and user specified alarm limits. Figure B-1 illustrates the internal components of the AI function block, and Table B-3 on page 52 lists the AI block parameters and their units of measure, descriptions, and index numbers.

Figure B-1. AI Function Block

OUT = block output value and status OUT_D = discrete output that signals a selected alarm condition

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B.3.1 Analog input (AI) parameter table

Table B-3. Definitions of AI Function Block System Parameters

FOUNDATION Fieldbus Block Information

September 2018

Parameter

ACK_OPTI ON 23

ALARM_HYS 24 0 – 50 Percent 0.5 Read and Write

ALM_SEL 38 HI_HI, HI, LO, LO_LO None Non selected Read and Write

ALARM_SUM 22 Enable/Disable None Enable Read and Write

ALERT_KEY 04 1 – 255 None 0 Read and Write

BLOCK_ALM 21 Not applicable None Not applicable Read only

BLOCK_ERR 06 Not applicable None Not applicable Read only

CAP_STDDEV 40 > = 0 Seconds 0 Read and Write The time over which the VAR_INDEX is evaluated.

CHANNEL 15

FIELD_VAL 19 0 – 100 Percent Not applicable Read only

GRANT_DENY 12

HI_ALM 34 Not applicable None Not applicable Read only

HI_HI_ALM 33 Not applicable None Not applicable Read only

HI_HI_LIM 26 Out_Scale

HI_HI_PRI 25 0 – 15 None 1 Read and Write The priority of the HI HI alarm.

HI_LIM 28 Out_Scale

HI_PRI 27 0 – 15 None 1 Read and Write The priority of the HI alarm.

IO_OPTS 13

L_TYPE 16

LO_ALM 35 Not applicable None Not applicable Read on ly

Index no.

Available values Units Default Read/Write Description

0 = Auto Ack Disabled 1 = Auto Ack Enabled

1 = Process Temperature 2 = Terminal Temperature

Program Tune Alarm Local

(2)

Low Cutoff Enable/Disable

Direct Indirect Indirect Square Root

None 0 all Disabled Read and Write Used to set auto acknowledgment of alarms.

The amount the alarm value must return within the alarm limit before the associated active alarm condition clears.

Used to select the process alarm conditions that will cause the OUT_D parameter to be set.

The summary alarm is used for all process alarms in the block. The cause of the alert is entered in the subcode field. The first alert to become active will set the Active status in the Status parameter. As soon as the Unreported status is cleared by the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

The identification number of the plant unit. This information may be used in the host for sorting alarms, etc.

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

This parameter reflects the error status associated with the hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

The CHANNEL value is used to select the measurement

(1)

None

None Not applicable Read and Write

Out_Scale

None Disable Read and Write

None Direct Read and Write

(2)

: Channel = 1

AI2: Channel = 2

Not applicable Read and Write

Read and Write

value. Refer to the appropriate device manual for information about the specific channels available in each devi ce. You must configure the CHANNEL parameter before you can configure the XD_SCALE parameter.

The value and status from the transducer block or from the simulated input when simulation is enabled.

Normally the operator has permission to write to parameter values, but Program or Local remove that permission and give it to the host controller or a local control panel.

The HI alarm data, which includes a value of the alarm, a timestamp of occurrence and the state of the alarm.

The HI HI alarm data, which includes a value of the alarm, a timestamp of occurrence and the state of the alarm.

The setting for the alarm limit used to detect the HI HI alarm condition.

The setting for the alarm limit used to detect the HI alarm condition.

Allows the selection of input/output options used to alter the PV. Low cutoff enabled is the only selectable option.

Linearization type. Determines whether the field value is used directly (Direct), is converted linearly (Indirect), or is converted with the square root (Indirect Square Root).

The LO alarm data, which includes a value of the alarm, a timestamp of occurrence and the state of the alarm.

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Table B-3. Definitions of AI Function Block System Parameters

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Parameter

LO_LI M 30 Out_Scale

Index no.

Available values Units Default Read/Write Description

(2)

Out_Scale

(2)

Not applicable Read and Write

The setting for the alarm limit used to detect the LO alarm condition.

The LO LO alarm data, which includes a value of the

LO_LO_A LM 36 Not applicable None Not applicable Read o nly

LO_LO_L IM 32 Out_Scale

(2)

Out_Scale

(2)

Not applicable Read and Write

alarm, a timestamp of occurrence and the state of the alarm.

The setting for the alarm limit used to detect the LO LO alarm condition.

LO_LO_P RI 31 0 – 15 None 1 Read and Write The priority of the LO LO alarm.

LO_PR I 29 0 – 15 None 1 Read and Write The priority of the LO alarm.

LOW_CUT 17 > = 0 Out_Scale

MODE_BLK 05

OUT 08 Out_Scale

Auto Manual Out of Service

(2)

None Not applicable Read and Write

± 10% Out_Scale

(2)

0 Read and Write

(2)

Not applicable Read and Write The block output value and status.

If percentage value of transducer input fails below this, PV = 0.

OUT_D 37 Discrete_State 1 – 16 None Disabled Read and Write Discrete output to indicate a selected alarm condition.

The high and low scale values, engineering units code,

OUT_SCALE 11 Any output range All available none Read and Write

PV 07 Not applicable Out_Scale

(2)

Not applicable Read only The process variable used in block execution.

PV_FTIME 18 > = 0 Seconds 0 Read and Write

and number of digits to the right of the decimal point associated with OUT.

The time constant of the first-order PV filter. It is the time required for a 63% change in the IN value.

A group of data that contains the current transducer

SIMULATE 09 Not applicable None Disable Read and Write

ST_REV 01 Not applicable None 0 Read only

Propagate fault forward

STATUS_OPTS 14

Uncertain if Limited Bad if Limited Uncertain if Man Mode

0 Read and Write

STDDEV 39 0 – 100 Percent 0 Read and Write

value and status, the simulated transducer value and status, and the enable/disable bit.

The revision level of the static data associated with the function block. The revision value will be incremented each time a static parameter value in the block is changed.

The average absolute error between the PV and its previous mean value over that evaluation time defined by VAR_SCAN.

STRATEGY 03 0 – 65535 None 0 Read and Write

The strategy field can be used to identify grouping of blocks. This data is not checked or processed by the block.

TAG _D ES C 02 32 text characters None none Read and Write

The user description of the intended application of the block.

UPDATE_EVT 20 Not applicable None Not applicable Read only This alert is generated by any change to the static data.

inH2O (68 °F) inHg (0 °C) ftH

O (68 °F)

mmH

mmHg (0 °C) psi

XD_SCALE 10 Any sensor range

bar mbar g/cm kg/c m Pa kPa torr atm deg C deg F

(1)

AI1

= deg C

AI2 = deg C

In all Rosemount devices the units of the transducer block is forced to match the unit code.

1. The host system may write over default values pre-configured by Rosemount.

2. Assume that when L_Type = Direct, the user configures Out_Scale which is equal to XD_Scale.

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B.4 LCD transducer block

Table B-4. LCD Transducer Block Parameters and Descriptions

Parameter Index Description

ALERT_KEY 4 The identification number of the plant unit.

BLK_TAG_1 15 The tag of the block containing DP1.

BLK_TAG_2 21 The tag of the block containing DP2.

BLK_TAG_3 27 The tag of the block containing DP3.

BLK_TAG_4 33 The tag of the block containing DP4.

BLK_TYPE_1 14 The enumerated block type for DP1's block.

BLK_TYPE_2 20 The enumerated block type for DP2's block.

BLK_TYPE_3 26 The enumerated block type for DP3's block.

BLK_TYPE_4 32 The enumerated block type for DP4's block.

The BLOCK_ALM is used for all configuration, hardware, connection failure or system problems in the block. The cause of the alert is entered in the subcode field. The first alert to

BLOCK_ALM 8

BLOCK_ERR 6

COLLECTION_DI RECTORY 12

CUSTOM_TAG_1 17 The block description that is displayed for DP1.

CUSTOM_TAG _2 23 The block description that is displayed for DP2.

CUSTOM_TAG _3 29 The block description that is displayed for DP3.

CUSTOM_TAG _4 35 The block description that is displayed for DP4.

CUSTOM_UNITS_1 19 This is the user entered units that are displayed when UNITS_TYPE_1=Custom.

CUSTOM_UNITS _2 25 This is the user entered units that are displayed when UNITS_TYPE_2=Custom.

CUSTOM_UNITS _3 31 This is the user entered units that are displayed when UNITS_TYPE_3=Custom.

CUSTOM_UNITS _4 37 This is the user entered units that are displayed when UNITS_TYPE_4=Custom.

DISPLAY_PARAM_SEL 13

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

PARAM_INDEX_1 16 The relative index of DP1 within its block.

PARAM_INDEX_2 22 The relative index of DP2 within its block.

PARAM_INDEX_3 28 The relative index of DP3 within its block.

PARAM_INDEX_4 34 The relative index of DP4 within its block.

ST_REV 1 The revision level of the static data associated with the function block.

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

TAG _D E SC 2 The user description of the intended application of the block.

TRANSDUCER_DIRCTORY 9

become active will set the Active status in the Status attribute. As soon as the Unreported status is cleared by the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

This parameter reflects the error status associated with the hardware or software components associated with a block. it is a bit string, so that multiple errors may be shown.

A directory that specifies the number, starting indicies, and DD Item ID's of the data collections in each transducer block.

This will determine which Display Parameters are active. Bit 0 = DP1 Bit 1 = DP2 Bit 2 = DP3 Bit 3 = DP4 Bit 4 = Bar Graph enable

A directory that specifies the number and starting indicies of the transducers in the transducer block.

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Table B-4. LCD Transducer Block Parameters and Descriptions

Parameter Index Description

TRANSDUCER_TYPE 10 Identifies the transducer that follows.

UNITS_TYPE_1 18 This parameter determines where the units for the display parameter come from.

UNITS_TYPE_2 24 This parameter determines where the units for the display parameter come from.

UNITS_TYPE_3 30 This parameter determines where the units for the display parameter come from.

UNITS_TYPE_4 36 This parameter determines where the units for the display parameter come from.

UPDATE_EVT 7 This alert is generated by any change to the staic data.

XD_ERROR 11 Provides additional error codes related to transducer blocks.

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B.5 PID block

Table B-5. PID Block Parameters and Descriptions

Parameter Index Parameter Index Parameter Index

ACK_OPTIONS 46 HI_HI_LIM 49 SP_LO_LIM 22

ALARM_HYS 47 HI_HI_PRI 48 SP_RATE_DN 19

ALARM_SUM 45 HI_LIM 51 SP_RATE_UP 20

ALERT_KEY 4 HI_PRI 50 SP_WORK 68

BAL_TIME 25 IDEADBAND 74 ST_REV 1

BETA 73 IN 15 STATUS_OPTS 14

BIAS 66 LO_ALM 62 STDDEV 75

BKCAL_HYS 30 LO_LIM 53 STRATEGY 3

BKCAL_IN 27 LO_ LO_ALM 63 STRUCTURECONFIG 71

BKCAL_OUT 31 LO _LO_LIM 55 T_AOPERIODS 92

BLOCK_ALARM 44 LO_LO_PRI 54 T_AUTO_EXTRA_DT 90

BLOCK_ERR 6 LO_PRI 52 T_AUTO_HYSTERESIS 91

BYPASS 17 MATHFORM 70 T_GAIN_MAGNIFIER 89

CAP_STDDEV 76 MODE_BLK 5 T_HYSTER 87

CAS_IN 18 OUT 9 T_IPGAIN 80

CONTROL_OPS 13 OUT_HI_LIM 28 T_PDTIME 85

DV_HI_ALM 64 OUT_LO_LIM 29 T_PSGAIN 83

DV_HI_LIM 57 OUT_SCALE 11 T_PTIMEC 84

DV_HI_PRI 56 PV 7 T_RELAYSS 88

DV_LO_ALM 65 PV_FTIME 16 T_REQUEST 77

DV_LO_LIM 59 PV_SCALE 10 T_STATE 78

DV_LO_PRI 58 RATE 26 T_STATUS 79

ERROR 67 RCAS_IN 32 T_TARGETOP 86

FF_GAIN 42 RCAS_OUT 35 T_UGAIN 81

FF_SCALE 41 RESET 24 T_UPERIOD 82

FF_VAL 40 ROUT_IN 33 TAG_DESC 2

GAIN 23 ROUT_OUT 36 TRK_IN_D 38

GAMMA 72 SHED_OPT 34 TRK_SCALE 37

GRANT_DENY 12 SP 8 TRK_VAL 39

HI_ALM 61 SP_FTIME 69 UPDATE_EVT 43

HI_HI_ALM 60 SP_HI_LIM 21

Foundation Fieldbus Block Information

Page 63

Page 64

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Reference Manual

00809-0400-4728, Rev CA

September 2018

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Emerson Rosemount 644 FOUNDATION Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Section 1 Introduction

1.1 Using this manual

1.2 Considerations

1.3 Return of materials

1.4 Product recycling/disposal

Section 2 Configuration

2.1 Overview

2.2 Safety messages

2.3 General block information

2.4 FOUNDATION Fieldbus function blocks

2.5 Operation and maintenance

Section 3 Installation

3.1 Overview

3.2 Safety messages

3.3 Mounting

3.4 Installation

3.5 Wiring

3.6 Power supply

Appendix A Specifications and Reference Data

A.1 Product Certifications

B.1 Resource block

B.2 Sensor transducer block

B.3 Analog Input (AI) function block

B.4 LCD transducer block

B.5 PID block