Emerson Rosemount 644 Reference Manual
Rail mount temperature transmitter with rk option and hart 7 protocol
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Also See for Rosemount 644:
- Reference manual (182 pages) ,
- Quick start manual (52 pages) ,
- Service manual (37 pages)
Related Manuals for Emerson Rosemount 644
Summary of Contents for Emerson Rosemount 644
- Page 1 Reference Manual 00809-0500-4728, Rev AC December 2021 ™ Rosemount 644 Rail Mount Temperature Transmitter ® with RK Option and HART 7 Protocol...
- Page 2 Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings. For information on Rosemount nuclear-qualified products, contact your local Emerson Sales Representative. Physical access Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could be intentional or unintentional and needs to be protected against.
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Page 3: Table Of Contents
5.10 Electronic temperature out of limits..................19 5.11 Power supply voltage issues.....................19 5.12 Attempting or failed to enter SIL mode..................19 5.13 Electronics failure........................19 5.14 Electronics failure........................20 5.15 Power supply voltage issues.....................20 5.16 Loop current read back error....................20 5.17 Power supply voltage issues.....................20 Emerson.com/Rosemount... - Page 4 Contents Reference Manual December 2021 00809-0500-4728 5.18 Electronics failure........................20 5.19 Electronics failure........................21 5.20 Electronics failure........................21 5.21 Electronics failure........................21 5.22 Watchdog reset executed......................21 5.23 Internal RTD sensor error......................22 5.24 Sensor failure...........................22 5.25 Sensor measurement error...................... 22 5.26 Sensor measurement error......................
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Page 5: Chapter 1 Introduction
Rosemount Volume 1 Temperature Sensors and Accessories (English) Product Data Sheet • Rosemount DIN-Style Temperature Sensors and Thermowells (Metric) Product Data Sheet Table 1-1: Change Summary: Rosemount 644 Rail Mount HART Device Revision Release date NAMUR NAMUR HART software Manual document software... -
Page 6: Mounting, Installation, And Programming
Introduction Reference Manual December 2021 00809-0500-4728 Mounting, installation, and programming • DIN rail mounting with up to 84 inputs per meter ® • Communication via Asset Management tool (e.g. Pactware, AMS, HART communicator) for which all relevant DD, eDD and DTM files are available Product recycling/disposal Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations. -
Page 7: Chapter 2 Installation
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. Emerson.com/Rosemount... -
Page 8: Connections
Installation Reference Manual December 2021 00809-0500-4728 Connections Single input 2 w / 3 w / 4 w RTD or TC (internal CJC or 3 w / 4 w lin. R external 2 w / 3 w / 4 w potentiometer CJC) 41 42 41 42... -
Page 9: Multidrop Mode
(with a fixed output signal of 4 mA). Maximum current in the loop is therefore 252 mA. A. Power supply B. Connection C. Connection D. Connection E. 250 Ω < R < 1100 Ω load F. Transmitter Emerson.com/Rosemount... - Page 10 Installation Reference Manual December 2021 00809-0500-4728 Rosemount 644R...
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Page 11: Chapter 3 Configuration
Emerson's DDL driver ™ • Via programming framework (e.g. DCS, PACTware HART communicator To get access to product-specific commands, the HART communicator must be loaded with Emerson's DDL driver. This can be ordered through either the FieldComm Group or Emerson. Emerson.com/Rosemount... - Page 12 Configuration Reference Manual December 2021 00809-0500-4728 A. Rosemount transmitter B. Ex area C. Safe area D. 250 Ω < R < 1100 Ω load E. Receiving equipment F. +V supply G. Input Programming framework ® ™ Support for both EDD and FDT /DTM technology, offering configuration and monitoring via relevant DCS/Asset Management Systems and supported management packages (e.g.
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Page 13: Operation And Maintenance
Onboard LED indicates faults according to NAMUR NE44 and NE107. Condition LED status Device OK Constant green No supply Fault indication independent of the device (e.g. wire break, Flashing red sensor short circuit, violation of input or output limits) Device error Constant red Emerson.com/Rosemount... -
Page 14: Jumpers
Operation and Maintenance Reference Manual December 2021 00809-0500-4728 Jumpers The Rosemount Single and Dual Input 644R/T Transmitters have two front jumpers: one to enable Write Protection and one to select the output current at Safe State to go above 21 mA as specified in NAMUR NE43. - Page 15 +70...+85 °C transmitter -30...-10 °C +30...+50 °C >85 °C electronics Runtime Recording of Sensor measurement values during operation, logging time spent in meter - each of nine fixed sub Sensor ranges. Sensors Subranges are defined individually for each Sensor type. Emerson.com/Rosemount...
- Page 16 Operation and Maintenance Reference Manual December 2021 00809-0500-4728 Table 4-1: Advanced functions (continued) Function Description Slave pointer - Recording of minimum/maximum internal transmitter temperature for device’s transmitter complete lifetime. electronics Slave pointer - Recording of minimum/maximum values for Sensor/s measurements is saved. Sensors Values are reset when measurement configuration is changed.
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Page 17: Chapter 5 Troubleshooting
(LL) as configured, and is no longer corresponding to the PV value. Recommended action Reconnect or repair sensor. Primary sensor 1 error LED status: flashing red A sensor error (broken/shorted sensor) is detected on Sensor 1. Recommended action Reconnect or repair sensor. Emerson.com/Rosemount... -
Page 18: Primary Sensor 2 Error (Only If Sensor 2 Is Enabled)
Troubleshooting Reference Manual December 2021 00809-0500-4728 Primary sensor 2 error (only if sensor 2 is enabled) LED status: flashing red A sensor error (broken/shorted sensor) is detected on Sensor 2. This is only possible if Sensor type 2 is <> ʺNoneʺ. Recommended action Reconnect or repair sensor. -
Page 19: Electronic Temperature Out Of Limits
LED status: solid red An unrecoverable error occurred in the internal communication to the input CPU. Recommended action 1. Reset or re-power the device. 2. If the error is persistent send the device for evaluation or replace the device. Emerson.com/Rosemount... -
Page 20: Electronics Failure
Troubleshooting Reference Manual December 2021 00809-0500-4728 5.14 Electronics failure LED status: solid red An unrecoverable error occurred in the input CPU. Recommended action 1. Reset or re-power the device. 2. If the error is persistent send the device for evaluation or replace the device. 5.15 Power supply voltage issues LED status: solid red... -
Page 21: Electronics Failure
2. If the error is persistent send the device for evaluation or replace the device. 5.22 Watchdog reset executed LED status: solid red The main program was reset unintentionally due to a failed code execution. Recommended action Correct and/or re-send the configuration. Emerson.com/Rosemount... -
Page 22: Internal Rtd Sensor Error
Troubleshooting Reference Manual December 2021 00809-0500-4728 5.23 Internal RTD sensor error LED status: solid red Sensor error is detected on the internal temperature sensor. Recommended action Reset or re-power the device. 5.24 Sensor failure LED status: flashing red A critical measurement error is detected on internal voltage reference. Recommended action 1. - Page 23 Reference Manual Troubleshooting 00809-0500-4728 December 2021 Recommended actions 1. Reconnect or repair sensor. 2. If the error is persistent send the device for evaluation or replace the device. Emerson.com/Rosemount...
- Page 24 Troubleshooting Reference Manual December 2021 00809-0500-4728 Rosemount 644R...
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Page 25: Appendix A Reference Data
Reference Data 00809-0500-4728 December 2021 Reference Data Product certifications To view current Rosemount 644 Temperature Transmitter product certification, follow these steps: Procedure 1. Go to Emerson.com/Rosemount/Rosemount-644. 2. Scroll as needed to the green menu bar and click Documents & Drawings. -
Page 26: Dimensional Drawings
Reference Data Reference Manual December 2021 00809-0500-4728 Dimensional drawings Single Sensor Input Figure A-1: Single Sensor Input Dimensions are in inches (millimeters). Dual Sensor Input Figure A-2: Dual Sensor Input Rosemount 644R... - Page 27 Reference Manual Reference Data 00809-0500-4728 December 2021 Dimensions are in inches (millimeters). Emerson.com/Rosemount...
- Page 28 2022 Emerson. All rights reserved. Emerson Terms and Conditions of Sale are available upon request. The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark of one of the Emerson family of companies. All other marks are the property...