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2

Reference Manual

00809-0400-4728, Rev CA

Introduction

September 2018

Introduction

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.

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

H

o

u

sin

g

 te

m

p

e

rat

u

re

 r

ise

, ab

ove

 a

m

bi

e

n

t °

C

 (

°F

)

3

4

5

6

7

8

9

0

60 (108)

50 (90)

40 (72)

30 (54)

20 (36)

10 (18)

3.6

22

Extension length (in.)

815 °C (1500 °F) oven temperature

540 °C (1000 °F) 
oven temperature

250 °C (482 °F) oven temperature

Содержание Rosemount 644 FOUNDATION

Страница 1: ...Reference Manual 00809 0400 4728 Rev CA September 2018 Rosemount 644 Temperature Transmitter with FOUNDATION Fieldbus Protocol ...

Страница 2: ......

Страница 3: ... 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...

Страница 4: ... 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...

Страница 5: ...nce 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 The products described in this document are NOT designed for nuclear qualified applications Using non nuclear qualified products in applications...

Страница 6: ...4 Reference Manual 00809 0100 4728 Rev CA Title Page September 2018 Title Page ...

Страница 7: ...s 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...

Страница 8: ...manently 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 transm...

Страница 9: ...s 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...

Страница 10: ...4 Reference Manual 00809 0400 4728 Rev CA Introduction September 2018 Introduction ...

Страница 11: ...e 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 in...

Страница 12: ... 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 T...

Страница 13: ...ent 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 ma...

Страница 14: ...4 FOUNDATION Fieldbus function blocks For reference information on the Resource Sensor Transducer AI LCD Transducer blocks refer to FOUNDATION 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 a...

Страница 15: ...t 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 b...

Страница 16: ...e 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 wi...

Страница 17: ...riority 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 ...

Страница 18: ...act 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 th...

Страница 19: ...If filtering is done in AI block damping will be applied to output every macrocycle The LCD display will display value from transducer block Table 2 1 RB RECOMMENDED_ACTION Alarm type Failed Maint Advise Active Event Recommended action text string Plantweb alerts None None No action required Advisory NV Writes Deferred Non volatile writes have been deferred leave the device powered until the advis...

Страница 20: ...red 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 var...

Страница 21: ...uction 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 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 1 AI1 as Process Temperature 1 Put the AI Block into OOS mode a Go to MODE_BLK TARGET b Select OOS 0x80 2 Go ...

Страница 22: ...ltering 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...

Страница 23: ...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...

Страница 24: ... 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 DISPLAY_PARAM_SEL The DISPLAY_PARAM_SEL parameter specifies how many process variables ...

Страница 25: ...ce 2 5 1 Overview This section contains information on operation and maintenance procedures Methods and Manual Operation Each FOUNDATION 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 Emers...

Страница 26: ...ication guide AG 140 available from the FOUNDATION Fieldbus Protocol Incorrect signal levels Refer to host documentation for procedure 1 Check for two terminators 2 Excess cable length 3 Bad power supply or conditioner Excess noise on segment Refer to host documentation for procedure 1 Check for incorrect grounding 2 Check for correct shielded wire 3 Tighten wire connections 4 Check for corrosion ...

Страница 27: ...10 For more detailed information Perform the following steps in the Sensor Transducer Block to determine the recommended action BLOCK_ERR see Table 2 3 XD_ERR see Table 2 4 DETAILED_STATUS see Table 2 5 RECOMMENDED_ACTION see Table 2 5 SENSOR_DETAILED STATUS see Table 2 5 If error condition does not exist in the Resource Block then it is a configuration problem see AI BLOCK_ERR Conditions in Table...

Страница 28: ...low temperature to stabilize 8 Set CAL_POINT_HI 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 ...

Страница 29: ... Error The software has detected an internal error Calibration Error An error occurred during calibration of the device Algorithm Error The algorithm used in the transducer block produced an error due to overflow data reasonableness failure etc Table 2 5 Sensor Transducer Block STB SENSOR_DETAILED_ STATUS Messages STB SENSOR_DETAILED_STATUS Description Invalid Configuration Wrong sensor connection...

Страница 30: ...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 g...

Страница 31: ...k Symptom Possible causes Recommended actions Bad or no temperature readings Read the AI BLOCK_ERR parameter BLOCK_ERR reads OUT OF SERVICE OOS 1 AI Block target mode target mode set to OOS 2 Resource Block OUT OF SERVICE BLOCK_ERR reads CONFIGURATION ERROR 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_SCAL...

Страница 32: ...eeded 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 Verify the manufacturing block revision and the hardware revision are correct compa...

Страница 33: ...description Other Out of Service The actual mode is out of service Symptom Possible causes Recommended action The LCD displays DSPLY INVLID Read the BLOCK_ERR and if it says BLOCK CONFIGURATION perform the Recommended Action One or more of the display parameters are not configured properly See LCD transducer block on page 18 The AI OUT readings do not match The OUT_SCALE of the AI block is not con...

Страница 34: ...28 Reference Manual 00809 0400 4728 Rev CA Configuration September 2018 Configuration ...

Страница 35: ...efer 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 ...

Страница 36: ...nstallation 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 Within Specifications Refer to Section 2 Configuration FIELD INSTALL Mount Transmitter Wire Transmitter Power Transmitter FINISHED ...

Страница 37: ...riate 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 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 con...

Страница 38: ... 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 connectio...

Страница 39: ...nder 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 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 trans...

Страница 40: ...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...

Страница 41: ... 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 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 pow...

Страница 42: ...er 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 Rosemount 644 sensor connections diagram 1 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 electr...

Страница 43: ... 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 Examples of approxim...

Страница 44: ...op 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 t...

Страница 45: ...ing 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 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...

Страница 46: ... 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 FOUNDATION Fieldbus segment A Sensor wires B Transmitter C Shield ground point D FOUNDATION Fieldbus segment C ...

Страница 47: ...enu 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 clic...

Страница 48: ...Reference Data September 2018 Reference Manual 00809 0400 4728 Rev CA Reference Data 42 ...

Страница 49: ...utomatically acknowledged ADVISE_ACTIVE 82 Enumerated list of advisory conditions within a device ADVISE_ALM 83 Alarm indicating advisory alarms These conditions do not have a direct impact on the process or device integrity ADVISE_ENABLE 80 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 ...

Страница 50: ...cates the state of the transmitter See Resource Block detailed status codes DEV_REV 12 Manufacturer revision number associated with the resource used by an interface device to locate the DD file for the resource DEV_STRING 43 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 DEV_TYPE 11 Manufacturer s model number associated wit...

Страница 51: ... maintenance conditions within a device MAINT_ALM 78 Alarm indicating the device needs maintenance soon If the condition is ignored the device will eventually fail MAINT_ENABLE 75 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 di...

Страница 52: ...ral 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 RS_STATE 07 State of the function block application state machine SAVE_CONFIG_BLOCKS 62 Number of EEPROM blocks ...

Страница 53: ...ications stack no application data STRATEGY 03 The strategy field can be used to identify grouping of blocks SUMMARY_STATUS 56 An enumerated value of repair analysis TAG_DESC 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 ...

Страница 54: ...tware components associated with a block It is a bit string so that multiple errors may be shown No effect CAL_MIN_SPAN 18 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 No effect CAL_POINT_HI 16 The highest calibrated value Assigns a value to the calibration high point CA...

Страница 55: ...TAILED_STATUS 37 Indicates the number of remote seals that are attached to the device See Remote Seal Number Codes N A CAL_VAN_DUSEN_COEFF 38 Indicates the type of remote seals that are attached to the device See Remote Seal Type Codes N A SECONDARY_VALUE_RANG 30 The secondary value related to the sensor No effect SECONDARY_VALUE_UNIT 29 Engineering units to be used with SECONDARY_VALUE 1001 C 100...

Страница 56: ... effect STRATEGY 03 The strategy field can be used to identify grouping of blocks No effect TAG_DESC 02 The user description of the intended application of the block No effect SESNOR_1_DAMPING 31 Indicates the state of the transmitter The parameter contains specific codes relating to the transducer block and the pressure sensor specifically No effect TRANSDUCER_DIRECTORY 09 Directory that specifie...

Страница 57: ...tomatic 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 o...

Страница 58: ...multiple errors may be shown CAP_STDDEV 40 0 Seconds 0 Read and Write The time over which the VAR_INDEX is evaluated CHANNEL 15 1 Process Temperature 2 Terminal Temperature None AI 1 Channel 1 AI2 Channel 2 Read and Write The CHANNEL value is used to select the measurement value Refer to the appropriate device manual for information about the specific channels available in each device You must con...

Страница 59: ...e used in block execution PV_FTIME 18 0 Seconds 0 Read and Write The time constant of the first order PV filter It is the time required for a 63 change in the IN value SIMULATE 09 Not applicable None Disable Read and Write A group of data that contains the current transducer value and status the simulated transducer value and status and the enable disable bit ST_REV 01 Not applicable None 0 Read o...

Страница 60: ...A directory that specifies the number starting indicies and DD Item ID s of the data collections in each transducer block 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 T...

Страница 61: ...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 trans...

Страница 62: ...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 1...

Страница 63: ......

Страница 64: ...41 768 6111 41 0 41 768 6300 RFQ RMD RCC Emerson com Asia Pacific Regional Office Emerson Automation Solutions 1 Pandan Crescent Singapore 128461 65 6777 8211 65 6777 0947 Enquiries AP Emerson com Middle East and Africa Regional Office Emerson Automation Solutions Emerson FZE P O Box 17033 Jebel Ali Free Zone South 2 Dubai United Arab Emirates 971 4 8118100 971 4 8865465 RFQ RMTMEA Emerson com Lin...

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