Emerson Rosemount 644 User manual

Quick Start Guide

00825-0200-4728, Rev GA

April 2017

Note

Before installing the transmitter, confirm the correct device driver is loaded on the host

systems. See page 3 for System Readiness.

Rosemount™644 Temperature

Transmitter

with 4–20 mA HART®(Revision 5 and 7) Protocol

April 2017

Quick Start Guide

NOTICE

This guide provides basic guidelines for Rosemount 644 Transmitters. It does not provide instructions for

configuration, diagnostics, maintenance, service, troubleshooting, explosion-proof, flameproof, or intrinsically

safe (I.S.) installations. Refer to the Rosemount 644 Reference Manual for more instruction. The manual and

this guide is also available electronically on Emerson.com/Rosemount.

Explosions could result in death or serious injury.

Installation of this transmitter in an explosive environment must be in accordance with the appropriate local,

national, and international standards, codes, and practices. Review the approvals section of the Rosemount

644 Reference Manual for any restrictions associated with a safe installation.

Before connecting a HART-based 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.

Electrical shock can result in death or serious injury.

Avoid contact with the leads and the terminals. High voltage may be present on leads can cause electrical

shock.

Conduit/cable entries

Unless marked, the conduit/cable entries in the transmitter housing use a 1/2–14 NPT thread form. Entries

marked “M20” are M20 x 1.5 thread form. On devices with multiple conduit entries, all entries will have the

same thread form. Only use plugs, adapters, glands, or conduit with a compatible thread form when closing

these entries.

When installing in a Hazardous Location, use only appropriately listed or Ex certified plugs, adapters, or

glands in cable/conduit entries.

Contents

System readiness . . . . . . . . . . . . . . . . . . . . . . . . . 3

Transmitter installation . . . . . . . . . . . . . . . . . . . 3

Safety instrumented systems . . . . . . . . . . . . . 17

Product Certifications . . . . . . . . . . . . . . . . . . . . 18

Quick Start Guide

April 2017

1.0 System readiness

1.1 Confirm HART Revision capability

If using HART based control or asset management systems, confirm the

HART capability of those systems prior to transmitter installation. Not all

systems are capable of communicating with HART Revision 7 Protocol. This

transmitter can be configured for either HART Revision 5 or 7.

For instructions on how to change the HART Revision of your transmitter, see

“Verify configuration” on page 4.

1.2 Confirm correct device driver

1. Verify the latest Device Driver files are loaded on your systems to ensure

proper communications.

2. Download the latest Device Driver at

Emerson.com/Device-Install-Kits/Device-Install-Kit-Search

Rosemount 644 Transmitter device revisions and files

Table 1 provides the information necessary to ensure the correct Device Driver

files and documentation are being used.

2.0 Transmitter installation

2.1 Set the alarm switch

Set the Rosemount 644 Transmitter alarm switch before putting the device into

operation.

Without an LCD display:

1. Set the loop to manual (if applicable) and disconnect the power.

2. Remove the housing cover.

3. Set the switch to the desired position (Hindicates High, Lindicates Low),

then reattach the housing cover. Enclosure covers must be fully engaged to

meet explosion-proof requirements.

Table 1. Rosemount 644 Device Revisions and Files

Software

date

NAMUR

software

revision

HART

software

revision

HART

universal

revision(1)

1. NAMUR software revision is located on the hardware tag of the device. HART software revision can be read using

a HART communication tool.

Device

revision(2)

2. Device Driver file names use Device and DD Revision, e.g. 10_01. HART Protocol is designed to enable legacy

device driver revisions to continue to communicate with new HART devices. To access new functionality, the

new Device Driver must be downloaded. It is recommended to download new Device Driver files to ensure full

functionality.

Manual document

number

Changes to

software (3)

3. HART Revision 5 and 7 Selectable, Dual Sensor support, Safety Certified, Advanced Diagnostics (if ordered),

Enhanced Accuracy and Stability (if ordered).

June 2012 1.1.1 3

5 8

00809-0100-4728 See Footnote 3 for

list of changes.

7 9

April 2017

Quick Start Guide

4. Apply power and set the loop to automatic control.

Figure 1. Alarm Switch Placement

A. Alarm switch

Note

If using an LCD display, remove the display by detaching it from the top of the device, set

the switch to the desired position, reattach the LCD display, and reattach the housing

cover. Enclosure covers must be fully engaged to meet explosion-proof requirements.

2.2 Verify configuration

Verify the configuration of the Rosemount 644 Transmitter device upon

receiving your transmitter using any HART-compliant configuration tool. See

the Rosemount 644 Reference Manual for configuration instructions using AMS

Device Manager.

The Rosemount 644 Transmitter communicates using the Field Communicator

(communication requires a loop resistance between 250 and 1100 ohms). Do

not operate when power is below 12 Vdc at the transmitter terminal. See

Rosemount 644 Reference Manual and Field Communicator Reference Manual

for more information.

Verify configuration with a Field Communicator

A Rosemount 644 DD (Device Descriptor) must be installed on the Field

Communicator to verify the configuration. Fast Key sequences for the latest DD

are shown in Table 2 on page 5. For Fast Key sequences using legacy DD's,

contact your local Emerson™representative.

Perform the following steps to determine if an upgrade is required.

1. Connect the sensor (see the wiring diagram located on the device’s top

label).

Rosemount 644 Transmitter Rosemount 644 Field Mount

Quick Start Guide

April 2017

2. Connect the bench power supply to the power terminals (“+” or “–”).

3. Connect a Field Communicator to the loop across a loop resistor or at the

power/signal terminals on the transmitter.

4. The following message will appear if the communicator has a previous

version of the DDs:

Device Description Not Installed…The Device Description for manufacturer 0x26

model 0x2618 dev rev 8/9 is not installed on the System Card…see Programming

Utility for details on Device Description updates…Do you wish to proceed in forward

compatibility mode?

If this notice does not appear, the latest DD is installed. If the latest version is not

available, the communicator will communicate properly, however, when the

transmitter is configured to utilize advanced transmitter features, there will be

trouble communicating and a prompt to turn off the communicator will display.

To prevent this from happening, upgrade to the latest DD or answer NO to the

question and default to the generic transmitter functionality.

Note

Emerson recommends installing the latest DD to access the complete functionality. Visit

Emerson.com/Field-Communicator for information on updating the DD Library.

Field Communicator user interface

Two user interfaces are available to configure this device.

The Device Revision 8 and 9 (HART 5 and 7), DD Revision 1 Fast Key Sequence in

Table 2 may be used for transmitter configuration and startup.

Figure 2. Device Dashboard Field Communicator Interface

Table 2. Device Revision 8 and 9 (HART 5 and 7), DD Revision 1 Fast Key Sequence

Function HART 5 HART 7

Alarm Values 2, 2, 5, 6 2, 2, 5, 6

Analog Calibration 3, 4, 5 3, 4, 5

Analog Output 2, 2, 5, 1 2, 2, 5, 1

April 2017

Quick Start Guide

Average Temperature Setup 2, 2, 3, 3 2, 2, 3, 3

Burst Mode 2, 2, 8, 4 2, 2, 8, 4

Comm Status N/A 1, 2

Configure additional messages N/A 2, 2, 8, 4, 7

Configure Hot Backup™2, 2, 4, 1, 3 2, 2, 4, 1, 3

D/A Trim 3, 4, 4, 1 3, 4, 4, 1

Damping Values 2, 2, 1, 5 2, 2, 1, 6

Date 2, 2, 7, 1, 2 2, 2, 7, 1, 3

Display Setup 2, 1, 4 2, 1, 4

Descriptor 2, 2, 7, 1, 4 2, 2, 7, 1, 5

Device Information 1, 8, 1 1, 8, 1

Differential Temperature Setup 2, 2, 3, 1 2, 2, 3, 1

Drift Alert 2, 2, 4, 2 2, 2, 4, 2

Filter 50/60 Hz 2, 2, 7, 4, 1 2, 2, 7, 4, 1

First Good Temperature Setup 2, 2, 3, 2 2, 2, 3, 2

Hardware Revision 1, 8, 2, 3 1, 8, 2, 3

HART Lock N/A 2, 2, 9, 2

Intermittent Sensor Detect 2, 2, 7, 4, 2 2, 2, 7, 4, 2

Loop Test 3, 5, 1 3, 5, 1

Locate Device N/A 3, 4, 6, 2

Lock Status N/A 1, 8, 3, 8

LRV (Lower Range Value) 2, 2, 5, 5, 3 2, 2, 5, 5, 3

LSL (Lower Sensor Limit) 2, 2, 1, 7, 2 2, 2, 1, 8, 2

Message 2, 2, 7, 1, 3 2, 2, 7, 1, 4

Open Sensor Holdoff 2, 2, 7, 3 2, 2, 7, 3

Percent Range 2, 2, 5, 2 2, 2, 5, 2

Sensor 1 Configuration 2, 1, 1 2, 1, 1

Sensor 2 Configuration 2, 1, 1 2, 1, 1

Sensor 1 Serial Number 2, 2, 1, 6 2, 2, 1, 7

Sensor 2 Serial Number 2, 2, 2, 7 2, 2, 2, 8

Sensor 1 Type 2, 2, 1, 2 2, 2, 1, 3

Sensor 2 Type 2, 2, 2, 2 2, 2, 2, 3

Sensor 1 Unit 2, 2, 1, 4 2, 2, 1, 5

Sensor 2 Unit 2, 2, 2, 4 2, 2, 2, 5

Sensor 1 Status N/A 2, 2, 1, 2

Sensor 2 Status N/A 2, 2, 2, 2

Table 2. Device Revision 8 and 9 (HART 5 and 7), DD Revision 1 Fast Key Sequence

Function HART 5 HART 7

Quick Start Guide

April 2017

Input or verify Callendar Van-Dusen constants

If sensor matching is being used with this combination of a transmitter and

sensor, verify the constants input.

1. From the HOME screen, select 2 Configure, 2 Manual Setup, 1 Sensor.

2. Set the control loop to manual and select OK.

3. At the ENTER SENSOR TYPE prompt, select Cal VanDusen.

4. At the ENTER SENSOR CONNECTION prompt, select the appropriate number of

wires.

5. Enter the Ro, Alpha, Delta, and Beta values from the stainless steel tag

attached to the special-order sensor when prompted.

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

7. To disable the transmitter-sensor matching feature from the HOME screen

select 2 Configure, 2 Manual Setup, 1 Sensor, 10 SensorMatching-CVD.

8. Choose the appropriate sensor type from the ENTER SENSOR TYPE prompt.

Verifying configuration with Local Operator Interface (LOI)

The optional LOI can be used for commissioning the device. The LOI is a

2-button design. To activate the LOI, push any button. LOI button functionality

is shown on the bottom corners of the display. See Table 3 and Figure 4 for

button operation and menu information.

Simulate Digital Signal N/A 3, 5, 2

Software Revision 1, 8, 2, 4 1, 8, 2, 4

Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1

Long Tag N/A 2, 2, 7, 1, 2

Terminal Temperature 2, 2, 7, 1 2, 2, 8, 1

URV (Upper Range Value) 2, 2, 5, 5, 2 2, 2, 5, 5, 2

USL (Upper Sensor Limit) 2, 2, 1, 7, 2 2, 2, 1, 8, 2

Variable Mapping 2, 2, 8, 5 2, 2, 8, 5

2-wire Offset Sensor 1 2, 2, 1, 9 2, 2, 1, 10

2-wire Offset Sensor 2 2, 2, 2, 9 2, 2, 2, 10

Table 2. Device Revision 8 and 9 (HART 5 and 7), DD Revision 1 Fast Key Sequence

Function HART 5 HART 7

April 2017

Quick Start Guide

Figure 3. Local Operator Interface

Figure 4. LOI Menu

Switch HART Revision mode

Not all systems are capable of communicating with HART Revision 7 Protocol.

This transmitter can be configured for either HART Revision 5 or 7 using a HART

capable configuration tool.

Table 3. LOI Button Operation

Button

Left No SCROLL

Right Yes ENTER

Quick Start Guide

April 2017

Updated configuration menus include a HART Universal Revision parameter that

can be configured to 5 or 7 if accessible by your system. See Table 2 for the Fast

Key sequence.

If the HART configuration tool is not capable of communicating with HART

Revision 7, the configuration menus in Table 2 will not be available. To switch

the HART Universal Revision parameter from generic mode, follow the

instructions below.

1. Go to Configure>Manual Setup>Device Information>Identification>Message.

a. To change your device to HART Revision 7, Enter: “HART7” in the

Message field.

b. To change your device to HART Revision 5, Enter: “HART5” in the

Message field.

Note

See Table 2 on page 5 to change HART Revision when the correct Device Driver is loaded.

2.3 Mount the transmitter

Mount the transmitter at a high point in the conduit run to prevent moisture

from draining into the transmitter housing.

Head mount transmitter with DIN plate style sensor installation

1. Attach the thermowell to the pipe or process container wall.

2. Install and tighten the thermowell before applying process pressure.

3. Verify the transmitter failure mode switch position.

4. Assemble the transmitter to the sensor. Push the transmitter mounting

screws through the sensor mounting plate.

5. Wire the sensor to the transmitter (see “Wire and apply power” on page 12).

6. Insert the transmitter-sensor assembly into the connection head.

a. Thread the transmitter mounting screw into the connection head

mounting holes.

b. Assemble the extension to the connection head.

c. Insert the assembly into the thermowell.

7. If using a cable gland, properly attach the cable gland to a housing conduit

entry.

8. Insert the shielded cable leads into the connection head through the cable

entry.

9. Connect the shielded power cable leads to the transmitter power terminals.

Avoid contact with sensor leads and sensor connections.

10. Connect and tighten the cable gland.

April 2017

Quick Start Guide

11. Install and tighten the connection head cover. Enclosure covers must be

fully engaged to meet explosion-proof requirements.

Head mount transmitter with threaded sensor installation (two

or three conduit entries)

1. Attach the thermowell to the pipe or process container wall.

2. Install and tighten thermowells before applying process pressure.

3. Attach necessary extension nipples and adapters to the thermowell.

4. Seal the nipple and adapter threads with silicone tape.

5. Screw the sensor into the thermowell. Install drain seals if required for

severe environments or to satisfy code requirements.

6. Verify the transmitter failure mode switch is in the desired position.

7. 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.

Note

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

diameter.

8. Pull the sensor wiring leads through the universal head and transmitter

center hole.

9. Mount the transmitter in the universal head by threading the transmitter

mounting screws into the universal head mounting holes.

10. Mount the transmitter-sensor assembly into the thermowell, or remote

mount if desired.

11. Seal adapter threads with silicone tape.

12. 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.

A. Connection head cover

B. Connection head

C. Thermowell

D. Transmitter mounting screws

E. Integral mount sensor with flying leads

F. Extension

AB C

DEF

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