Emerson 644 User Manual

0 (0)

Reference Manual

00809-0400-4728, Rev AA

June 2011

Rosemount 644 Temperature Transmitter with FOUNDATION™ fieldbus

www.rosemount.com

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA

June 2011

SECTION 1

Introduction

SECTION 2

Installation

SECTION 3

Configuration

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

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Product Recycling/Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

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

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Typical European Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Typical North American Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-5

LCD Display Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Ground the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Device Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Node Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Link Active Scheduler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Block Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Foundation fieldbus function blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 LCD Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 Troubleshooting Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23 LCD Transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

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June 2011

Rosemount 644

APPENDIX A

Specifications and

Reference Data

APPENDIX B

Product

Certifications

APPENDIX C Foundation fieldbus Block Information

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

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

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Foundation Fieldbus Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-9

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-12

Tagging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-14

Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-14

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-15

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

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

Hazardous Locations Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Rosemount 644 with Foundation fieldbus. . . . . . . . . . . . . . . . . . . .B-2

North American Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

European Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3

IECEx Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-4

Japanese Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Combination Approvals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Russian GOST Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Kazakhstan GOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Ukraine GOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7

Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2

Sensor Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-8

AI Parameter Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-9

LCD Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-11

PID Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-12

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Reference Manual

00809-0400-4728, Rev AA

June 2011

Rosemount 644

Temperature Transmitters

Rosemount 644 Hardware Revision	9
FOUNDATION™ Fieldbus Device Revision	2
Device Descriptor Revision	1

NOTICE

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

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

Customer Central

1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST)

National Response Center

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

International

1-(952)-906-8888

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

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

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

www.rosemount.com

Reference Manual

00809-0400-4728, Rev AA

June 2011

Rosemount 644

Section 1

Introduction

SAFETY MESSAGES

Warnings

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3 Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-4

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 connecting FOUNDATION fieldbus in an explosive atmosphere, make sure the instruments in the loop are installed in accordance with intrinsically safe or non-intrinsic 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.

www.rosemount.com

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA

June 2011

OVERVIEW

Manual	This manual is designed to assist in the installation, operation, and
	maintenance of Rosemount 644 head mount and 644 rail mount.
	Section 1: Introduction

	• Transmitter and Manual Overview
	•	Considerations
	•	Return of Material
	Section 2: Installation
	•	Mounting
	•	Installation
	•	Wiring
	•	Power Supply
	•	Commissioning
	Section 3: Configuration
	•	Calibration
	•	Hardware Maintenance
	•	Diagnostic Messaging
	Appendix A: Specifications and Reference Data
	•	Specifications
	•	Dimensional Drawings
	•	Ordering Information
	• Biotechnology, Pharmaceutical Industries, and Sanitary Applications
	Appendix B: Product Certifications
	•	Product Certifications
	•	Installation Drawings
	Appendix C: Foundation fieldbus Block Information
	• Information regarding the Function Blocks
Transmitter	Features of the Rosemount 644 include:
	• Accepts inputs from a wide variety of sensors
	• Configuration using FOUNDATION fieldbus

• 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

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Rosemount 644

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

	• Temperature Sensors and Assemblies Product Data Sheet, Volume 1
	(document number 00813-0100-2654)
	• Temperature Sensors and Assemblies Product Data Sheet, Volume 2
	(document number 00813-0200-2654)
CONSIDERATIONS
General	Electrical temperature sensors such as RTDs and thermocouples produce
	low-level signals proportional to their sensed temperature. The 644 converts
	the low-level sensor signal to a standard 4–20 mA dc, or digital FOUNDATION
	fieldbus signal that is relatively insensitive to lead length and electrical noise.
	This signal is then transmitted to the control room via two wires.
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.
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 644 head mount
	transmitter to a DIN rail or assembling a new 644 head mount to an existing
	threaded sensor connection head (former option code L1).
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.
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.

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Rosemount 644

Figure 1-1. 644 head mount Transmitter Connection Head Temperature Rise vs. Extension Length

Reference Manual

00809-0400-4728, Rev AA

June 2011

Above	60 (108)
Above	50 (90)
TemperatureRise, Ambient°C (°F)	50 (90)
TemperatureRise, Ambient°C (°F)	22 20 (36)
	40 (72)
		815 °C (1500 °F) Oven Temperature
	30 (54)

Housing				540 °C (1000 °F)
Housing	10 (18)			Oven Temperature
				Oven Temperature


	0		250 °C (482 °F) Oven Temperature
	0
	3	4			5	6	7	8	9

3.6Extension Length (in.)

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.
RETURN OF MATERIALS	To expedite the return process in North America, call the Emerson Process
	Management National Response Center toll-free at 800-654-7768. This
	center, available 24 hours a day, will assist you with any needed information
	or materials.
	The center will ask for the following information:
	•	Product model
	•	Serial numbers
	• The last process material to which the product was exposed
	The center will provide
	• A Return Material Authorization (RMA) number
	• Instructions and procedures that are necessary to return goods that
		were exposed to hazardous substances
	For other locations, 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.
PRODUCT
	Recycling of equipment and packaging should be taken into consideration
RECYCLING/DISPOSAL	and disposed of in accordance with local and national legislation/regulations.

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Reference Manual

00809-0400-4728, Rev AA

June 2011

Rosemount 644

Section 2

Installation

SAFETY MESSAGES

Warnings

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-7 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-11

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.

www.rosemount.com

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA

June 2011

Figure 2-1. Installation Flowchart

START

HERE

Bench

Calibration?

BASIC SETUP

Set Sensor Type

Set Number of Wires

Set Units

Set Range Values

Set Damping

VERIFY

Simulate Sensor Input

FIELD INSTALL

Set Failure Mode

Switch

Mount Transmitter

Wire Transmitter

Power Transmitter

FINISHED

Does not apply to the 644 with FOUNDATION fieldbus

Within

Specifications?

Refer to Section 3: Configuration

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Rosemount 644

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

The 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.

The 644 rail mount attaches directly to a wall or to a DIN rail.

Mounting a 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 2-2.

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

G-Rail (asymmetric)	Top Hat Rail (symmetric)
Mounting	Mounting
Hardware	Hardware
Transmitter	Transmitter

Rail Clip

Note: Kit includes Mounting Hardware and both types of Rail Kits.

Figure 2-3. Assembling 644H for Use in an Existing L1 Connection Head

Retrofitting a 644H for Use in an Existing Threaded Sensor Connection Head

To mount a 644H in an existing threaded sensor connection head (former option code L1), order the 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 644H in the existing head. See Figure 2-3.

Existing Threaded Sensor Connection Head

(Former option code L1)

Kit includes replacement bracket and screws.

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Rosemount 644

Reference Manual

00809-0400-4728, Rev AA

June 2011

INSTALLATION

Typical European

Installation

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 2-7 on page 2-8).

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 = 644H Transmitter

B = Connection Head

C = Thermowell

D = Transmitter Mounting Screws

E = Integral Mount Sensor with Flying Leads F = Extension

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Reference Manual

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June 2011

Rosemount 644

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.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.

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

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

7.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.

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

A B D

	C
	E
A = Threaded Thermowell	D = Universal Head
B = Threaded Style Sensor	E = Conduit Entry
C = Standard Extension

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Rosemount 644

Reference Manual

00809-0400-4728, Rev AA

June 2011

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 2 screws)

•Meter cover with O-ring in place

Figure 2-4. Installing the LCD

Display

Captive Mounting Screws and Springs

Meter Spacer

644H

10 pin Connector

LCD Display

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 FOUNDATION 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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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 2-5 on page 2-7 when making sensor connections. Refer to Figure 2-6 on page 2-8 for FOUNDATION fieldbus installations.

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

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

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

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

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

5.Apply power (see “Power Supply”).

Figure 2-5. Transmitter Power,

Communication, and Sensor

Terminals

644H

Sensor
Terminals
Communication	1	2	3	4
Communication
Terminals

Power Terminals

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Rosemount 644

Figure 2-6. Connecting a

FOUNDATION fieldbus Host

System to a Transmitter Loop

Integrated Power

Conditioner and Filter

Power

Supply

(The power supply, filter, first terminator, and configuration tool are typically located in the control room.)

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6234 ft (1900 m) max (depending upon cable characteristics)

Terminators

(Trunk)

(Spur)

FOUNDATION

fieldbus

Configuration

Tool

(Spur)
	Power/
Devices 1	Signal
through 16	Wiring

Sensor Connections

The 644 is compatible with a number of RTD and thermocouple sensor types. Figure 2-7 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 2-7. Sensor Wiring

Diagrams

644 Sensor Connections Diagram

1 2 3 4	1 2 3 4	1 2 3 4	1 2 3 4
2-wire	3-wire RTD*	4-wire RTD	T/C
RTD and	and	and	and mV

*Emerson Process Management 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.

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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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 feet 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 three feet 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 2-1. Examples of

Approximate Basic Error		Sensor Input	Approximate Basic Error
		4-wire RTD	None (independent of lead wire resistance)
		3-wire RTD	± 1.0 in reading per ohm of unbalanced lead wire resistance
			(Unbalanced lead wire resistance = maximum imbalance between
			any two leads.)
		2-wire RTD	1.0 in reading per ohm of lead wire resistance
	Examples of Approximate Lead Wire Resistance Effect Calculations
	Given:
		Total cable length:		150 m
		Imbalance of the lead wires at 20 °C:		1.5
		Resistance/length (18 AWG Cu):		0.025 /m °C
		Temperature coefficient of Cu ( Cu):		0.039 / °C
		Temperature coefficient of Pt( Pt):		0.00385 / °C
		Change in Ambient Temperature ( Tamb):		25 °C
		RTD Resistance at 0 °C (Ro):		100 (for Pt 100 RTD)
	• Pt100 4-wire RTD: No lead wire resistance effect.
	•	Pt100 3-wire RTD:
		Basic Error =	Imbalance------------------------------of------Lead----------------Wires-------------
			Pt Ro

Cu Tamb Imbalance of Lead Wires Error due to amb. temp. variation = ------------------------------------------------------------------------------------------------------------------------

Pt Ro

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Lead wire imbalance seen by the transmitter = 0.5

Basic error =	0.5	= 1.3 C
	---0.00385------------------------------/--------------C----------------100------------------

Error due to amb. temp. var. of 25 °C

0.0039 / C 25 C 0.5

=------------------------------------------------------------------------------------------------------- = 0.1266 C

0.00385 / C 100

•Pt100 2-wire RTD:

Lead Wire Resistance

Basic Error = ----------------------------------------------------------

Pt Ro

Cu Tamb Lead Wire Resistance Error due to amb. temp. variation = ----------------------------------------------------------------------------------------------------------------

Pt Ro

Lead wire resistance seen by the transmitter = 150 m × 2 wires × 0.025 /m = 7.5

Basic error =	7.5		= 19.5 C
	---0.00385-------------------------------/-------------C----------------100-------------	-----

Error due to amb. temp. var. of 25 °C

0.0039 / C 25 C 7.5

=------------------------------------------------------------------------------------------------------- = 1.9 C

0.00385 / C 100

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POWER SUPPLY

FOUNDATION fieldbus Installation

Ground the Transmitter

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 644 with FOUNDATION fieldbus are polarity insensitive.

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.

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 FOUNDATION fieldbus devices. Only the shield wire should 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).

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.

Sensor Wires

Transmitter

Shield ground point

FOUNDATION Fieldbus segment

Connect shields together, electrically isolated from the transmitter

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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.

FOUNDATION Fieldbus segment

Option 3:

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

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.


Sensor Wires
Sensor Wires			Transmitter

Shield ground point

FOUNDATION 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.


Sensor Wires
Sensor Wires			Transmitter

Shield ground point

FOUNDATION Fieldbus segment

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Section 3

Configuration

OVERVIEW

SAFETY MESSAGES

Warnings

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2 FOUNDATION fieldbus function blocks . . . . . . . . . . . . . . . . page 3-4 Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . page 3-15

This section provides information on configuring, troubleshooting, operating, and maintaining the Rosemount 644 Temperature transmitter using FOUNDATION fieldbus protocol.

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.

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GENERAL BLOCK INFORMATION

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 www.rosemount.com. The initial release of the Rosemount 644 with FOUNDATION fieldbus protocol is device revision 1.

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.

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
	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 manual (document number
	00809-0100-4783).

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NOTE

When an upstream block is set to OOS, this will impact the output status of all downstream blocks. The figure below depicts the hierarchy of blocks:

Link Active Scheduler

Block Installation

Resource	Transducer	Analog Input	Other
Block	Block	(AI Block)	Function
Block	Block	(AI Block)	Function
			Blocks

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

2.Restart the device.

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

•2 Analog Input Blocks (tag names AI 1300, AI 1400)

•1 Proportional/Integral/Derivative Block (tag name PID 1500)

The 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% 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.

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Capabilities

FOUNDATION FIELDBUS

FUNCTION BLOCKS

Virtual Communication Relationship (VCRs)

There are a total of 12 VCRs. One is permanent and 11 are fully configurable by the host system. Sixteen 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
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

For reference information on the Resource, Sensor Transducer, AI, LCD Transducer blocks refer to FOUNDATION fieldbus Block Information on page A-1. Reference information on the PID block can be found in the Function Block manual document number 00809-0100-4783.

Resource Block (index number 1000)

The Resource Function Block (RB) contains diagnostic, hardware, and electronics information. There are no linkable inputs or outputs to the Resource Block.

Sensor Transducer Block (index number 1100)

The Sensor Transducer Function Block (STB) temperature measurement data includes sensor and terminal temperature. The STB also includes information about sensor type, engineering units, linearization, reranging, damping, temperature compensation, and diagnostics.

LCD Transducer Block (index number 1200)

The LCD Transducer Block is used to configure the LCD meter.

Analog Input Block (index number 1300 and 1400)

The Analog Input Function Block (AI) processes the measurements from the sensor and makes them available to other function blocks. The output value from the AI block is in engineering units and contains a status indicating the quality of the measurement. The AI block is widely used for scaling functionality.

PID Block (index number 1500)

The PID Function Block combines all of the necessary logic to perform proportional/integral/derivative (PID) control. The block supports mode control, signal scaling and limiting, feed forward control, override tracking, alarm limit detection, and signal status propagation.

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Resource Block

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.

FEATURES and FEATURES_SEL

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

FEATURES

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

UNICODE

All configurable string variables in the 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 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.

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.

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.

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

FEATURE_SEL			WRITE_LOCK		Write access
SW_SEL bit	WRITE_LOCK		Read/Write	DEFINE_WRITE_LOCK	to blocks
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	Everything	None

FEATURES_SEL

FEATURES_SEL is used to turn on any of the supported features. The default setting of the 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 3-15.

The Resource Block will act as a coordinator for PlantWeb alerts. There will be three alarm parameters (FAILED_ALARM, MAINT_ALARM, and ADVISE_ALARM) which will contain information regarding some of the device errors which are detected by the transmitter software. There will be a RECOMMENDED_ACTION parameter which will be used to display the recommended action text for the highest priority alarm and a HEALTH_INDEX parameters (0 - 100) indicating the overall health of the transmitter. FAILED_ALARM will have the highest priority followed by MAINT_ALARM and ADVISE_ALARM will be the lowest priority.

FAILED_ALARMS

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

FAILED_ENABLED

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

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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 3-13. The default is 0 and the recommended value are between 8 and 15.

FAILED_ACTIVE

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

FAILED_ALM

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

MAINT_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

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.

MAINT_PRI

MAINT_PRI designates the alarming priority of the MAINT_ALM, “Process Alarms” on page 3-12. The default is 0 and the recommended values is 3 to 7.

MAINT_ACTIVE

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

MAINT_ALM

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

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Advisory Alarms

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

ADVISE_ENABLED

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

1.NV Writes Deferred

2.SPM Process Anomaly detected

ADVISE_MASK

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

ADVISE_PRI

ADVISE_PRI designates the alarming priority of the ADVISE_ALM, see “Process Alarms” on page 3-12. 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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Emerson 644 User Manual

Table of Contents

SAFETY MESSAGES

OVERVIEW

CONSIDERATIONS

RETURN OF MATERIALS

SAFETY MESSAGES

MOUNTING

INSTALLATION

WIRING

POWER SUPPLY

OVERVIEW

SAFETY MESSAGES

GENERAL BLOCK INFORMATION