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Emerson Rosemount 848T FOUNDATION Reference Manual

High density temperature transmitter with foundation fieldbus, device revision 8
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Reference Manual
00809-0100-4697, Rev GA
November 2014
Rosemount 848T High Density Temperature
™
Transmitter with F
fieldbus
OUNDATION
Device Revision 8

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Summary of Contents for Emerson Rosemount 848T FOUNDATION

  • Page 1 Reference Manual 00809-0100-4697, Rev GA November 2014 Rosemount 848T High Density Temperature ™ Transmitter with F fieldbus OUNDATION Device Revision 8...
  • Page 3 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 an Emerson Process Management Sales Representative.]...
  • Page 4 Reference Manual Title Page 00809-0100-4697, Rev GA November 2014...

  • Page 5: Table Of Contents

    Reference Manual Contents 00809-0100-4697, Rev GA November 2014 1Section 1: Introduction Safety messages ............1 1.1.1 Warnings .
  • Page 6 Reference Manual Contents 00809-0100-4697, Rev GA November 2014 Common configurations for high density applications..... .22 3.3.1 Interfacing analog transmitters to Foundation fieldbus ....25 Block configuration .
  • Page 7 Reference Manual Contents 00809-0100-4697, Rev GA November 2014 A.1.11Alarms ............58 A.1.12Backup Link Active Scheduler (LAS) .
  • Page 8 Reference Manual Contents 00809-0100-4697, Rev GA November 2014 C.4.2 Alerts ............91 Network communication .

  • Page 9: 1Section 1: Introduction

    Reference Manual Section 1: Introduction 00809-0100-4697, Rev GA November 2014 Section 1 Introduction Safety messages Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is indicated by a warning symbol ( ).
  • Page 10 Reference Manual Section 1: Introduction 00809-0100-4697, Rev GA November 2014 Section 1: Introduction Overview  Considerations  Return of Materials  Section 2: Installation Mounting  Installation  Wiring  Power Supply  Commissioning  Section 3: Configuration fieldbus Technology ...

  • Page 11: Service Support

    00809-0100-4697, Rev GA November 2014 Service support 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 with any needed information or materials.
  • Page 12 Reference Manual Section 1: Introduction 00809-0100-4697, Rev GA November 2014 Introduction...

  • Page 13: Safety Messages

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Section 2 Installation Safety messages ............page 5 Mounting .

  • Page 14: Mounting To A Din Rail Without An Enclosure

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 2.2.1 Mounting to a DIN rail without an enclosure To mount the 848T to a DIN rail without an enclosure, follow these steps: Pull up the DIN rail mounting clip located on the top back side of the transmitter. Hinge the DIN rail into the slots on the bottom of the transmitter.

  • Page 15: Mounting To A 2-In. Pipe Stand

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 2.2.3 Mounting to a 2-in. pipe stand Use the optional mounting bracket (option code B6) to mount the 848T to a 2-in. pipe stand when using a junction box. Figure 2-3. Mounting the 848T to a 2-in. Pipe Stand Using a Junction Box Aluminum/plastic junction box Stainless steel junction box (styles JA and JP)

  • Page 16: Wiring

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Wiring 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.
  • Page 17 Figure 2-5. Sensor Wiring Diagram A. 2-wire RTD and ohms B. 3-wire RTD and ohms (Emerson provides 4-wire sensors for all single-element RTDs; use these RTDs in 3-wire configurations by clipping the fourth lead or leaving it disconnected and insulated with electrical tape.) C.
  • Page 18 Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Figure 2-6. 848T Analog Input Wiring Diagram A. Analog input connectors B. Analog transmitters C. Power supply Figure 2-7. 848T Analog Connector A. HART Channel A B. 250 ohm resistor in the loop when switched to the left C.

  • Page 19: Power Supply

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 2.3.2 Power supply Connections The transmitter requires between 9 and 32 VDC to operate and provide complete functionality. The DC power supply should provide power with less than 2% ripple. A fieldbus segment requires a power conditioner to isolate the power supply filter and decouple the segment from other segments attached to the same power supply.
  • Page 20 Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Shielded wire 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 (most common). Ungrounded thermocouple, mV, and RTD/ohm inputs Option 1: Connect signal wiring shield to the sensor wiring shield(s).
  • Page 21 Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Grounded thermocouple inputs Ground sensor wiring shield(s) at the sensor. Ensure that the sensor wiring and signal wiring shields are electrically isolated from the transmitter enclosure. Do not connect the signal wiring shield to the sensor wiring shield(s). Ground signal wiring shield at the power supply end.

  • Page 22: Switches

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Switches Figure 2-9. Switch Location on the Rosemount 848T NOT USED SECURITY SIMULATE ENABLE Security After configuring the transmitter, the data can be protected from unwarranted changes. Each 848T is equipped with a security switch that can be positioned “ON” to prevent the accidental or deliberate change of configuration data.
  • Page 23 Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Figure 2-10. Commissioning Tag A. Device ID B. Device Tag to denote physical location Transmitter tag Hardware Tagged in accordance with customer requirements  Permanently attached to the transmitter  Software The transmitter can store up to 32 characters.

  • Page 24: Installation

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Installation 2.7.1 Using cable glands Use the following steps to install the 848T with cable glands: Remove the junction box cover by unscrewing the four cover screws. Run the sensor and power/signal wires through the appropriate cable glands using the pre-installed cable glands (see Figure 2-11).

  • Page 25: Using Conduit Entries

    Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 2.7.2 Using conduit entries Use the following steps to install the 848T with conduit entries. Remove the junction box cover by unscrewing the four cover screws. Remove the five conduit plugs and install five conduit fittings (supplied by the installer). Run pairs of sensor wires through each conduit fitting.
  • Page 26 Reference Manual Section 2: Installation 00809-0100-4697, Rev GA November 2014 Installation...

  • Page 27: 3Section 3: Configuration

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Section 3 Configuration Safety messages ............page 19 Configuration .

  • Page 28: Standard

    MODE_BLK.TARGET to OOS, or set the SENSOR_MODE to Configuration. 3.2.2 Transmitter configuration The transmitter is available with the standard configuration setting. The configuration settings and block configuration may be changed in the field with the Emerson Process Management ™ ® Systems DeltaV...

  • Page 29: Alarms

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.2.5 Alarms Use the following steps to configure the alarms, which are located in the Resource Function Block: Set the resource block to OOS. Set WRITE_PRI to the appropriate alarm level (WRITE_PRI has a selectable range of priorities from 0 to 15, see “Alarm Priority Levels”...

  • Page 30: Configure Measurement Validation

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.2.8 Configure measurement validation Use the following steps to configure measurement validation: Set mode to Disabled for specific sensor. Select sample rate. 1-10 sec/sample is available. 1 second/sample is preferred for sensor degradation.
  • Page 31 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Typical profiling application Example: Distillation column temperature profile where all channels have the same sensor units (°C, °F, etc.). Out_1 Out_2 Out_3 Out_4 Out_5 Out_6 Function Out_7 Block Out_8 Place the Multiple Analog Input (MAI) function block in OOS mode (set MODE_BLK.TARGET to OOS).
  • Page 32 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Set OUT_SCALE (MAI output scaling) to the appropriate upper and lower range values, the appropriate sensor units, and display decimal point. Place the MAI function block in auto mode. Place the Input Selector (ISEL) function block in OOS mode by setting MODE_BLK.TARGET to OOS.

  • Page 33: Interfacing Analog Transmitters To Foundation Fieldbus

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.3.1 Interfacing analog transmitters to F fieldbus OUNDATION Transducer block configuration Use the sensor configuration method to set the sensor type to mV – 2-wire for the applicable transducer block or follow these steps. Set the MODE_BLK.TARGET to OOS mode, or set the SENSOR_MODE to configuration.
  • Page 34 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-2. Resource Block Parameters Number Parameter Description RS_STATE State of the function block application state machine. For a list of enumeration values, see FF-890. TEST_RW Read/write test parameter - used only for conformance testing. DD_RESOURCE String identifying the tag of the resource which contains the Device Description for the resource.
  • Page 35 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-2. Resource Block Parameters Number Parameter Description LIM_NOTIFY Maximum number of unconfirmed alert notify messages allowed. CONFIRM_TIME The time the resource will wait for confirmation of receipt of a report before trying again.
  • Page 36 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-2. Resource Block Parameters Number Parameter Description FD_FAIL_ALM Used primarily to broadcast a change in the associated active conditions, which are not masked, for this alarm category to a Host System. FD_OFFSPEC_ALM Used primarily to broadcast a change in the associated active conditions, which are not masked, for this alarm category to a Host System.
  • Page 37 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-2. Resource Block Parameters Number Parameter Description FAILED_ENABLE Enabled FAILED_ALM alarm conditions. Corresponds bit for bit to the FAILED_ACTIVE. A bit on means that the corresponding alarm condition is enabled and will be detected.
  • Page 38 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Block errors The table below lists conditions reported in the BLOCK_ERR parameter. Table 3-3. BLOCK_ERR Conditions Number Name and description Other Block Configuration Error: A feature in CYCLE_SEL is set that is not supported by CYCLE_TYPE.

  • Page 39: Field Diagnostics & Plantweb Alerts

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-4. Alarm Priority Levels Number Description The priority of an alarm condition changes to 0 after the condition that caused the alarm is corrected. An alarm condition with a priority of 1 is recognized by the system, but is not reported to the operator.

  • Page 40: Plantweb Alerts

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.4.3 PlantWeb alerts The alerts and recommended actions should be used in conjunction with “Operation and Maintenance” on page 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.
  • Page 41 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 FAILED_PRI Designates the alerting priority of the FAILED_ALM, see Table 3-4 on page 31. 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.
  • Page 42 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 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.

  • Page 43: Recommended Actions For Plantweb Alerts

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.4.4 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.

  • Page 44: Field Diagnostics Alerts

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-7. RB.RECOMMENDED_ACTION Alarm type Active event Recommended action Failed Sensor 8 Failure Verify the Sensor 8 Instrument process is within the Sensor range and/or confirm sensor configuration and wiring. Failed Body Temperature Verify the ambient temperature is within the operating limits...
  • Page 45 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-8. FD Failure Alarms Alarm Priority Sensor 1 Failure Sensor 2 Failure Sensor 3 Failure Sensor 4 Failure Sensor 5 Failure Sensor 6 Failure Sensor 7 Failure Sensor 8 Failure FD_FAILED_MASK FD_FAIL_MASK parameter will mask any of the failed conditions listed in FD_FAILED_MAP.
  • Page 46 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-9. FD Offspec Alarms Alarm Priority Sensor 3 Degraded Sensor 4 Degraded Sensor 5 Degraded Sensor 6 Degraded Sensor 7 Degraded Sensor 8 Degraded FD_ OFFSPEC _MASK The FD_OFFSPEC_MASK parameter will mask any of the failed conditions listed in FD_OFFSPEC_MAP.
  • Page 47 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 FD_MAINT_PRI FD_MAINT_PRI designates the alarming priority of the MAINT_ALM, Table 3-4 on page 31. The default is 0 and the recommended value is greater than 2. FD_MAINT_ACTIVE FD_ MAINT_ACTIVE parameter displays the active alarms is active that are being selected for this category.

  • Page 48: Recommended Actions For Field Diagnostics Alerts

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.4.6 Recommended actions for field diagnostics 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 Field Diagnostics alerts are active.

  • Page 49: Transducer Blocks

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-12. RB.RECOMMENDED_ACTION Alarm type Active event Recommended action Off Spec Sensor 4 Degraded Confirm the operating range of Sensor 4 and/or verify the sensor connection and device environment. Off Spec Sensor 5 Degraded Confirm the operating range of Sensor 5 and/or verify the sensor connection and device environment.
  • Page 50 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-13. Channel Definitions for the 848T Channel Description Channel Description Differential Sensor 2 Sensor 4 Rate Change Differential Sensor 3 Sensor 5 Rate Change Differential Sensor 4 Sensor 6 Rate Change Body Temperature Sensor 7 Rate Change Sensor 1 Deviation...
  • Page 51 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Automatic (Auto) The block outputs reflect the analog input measurement. Out of Service (OOS) The block is not processed. Channel outputs are not updated and the status is set to Bad: Out of Service for each channel.
  • Page 52 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-15. Transducer Block Parameters Number Parameter Description XD_ERROR Provides additional error codes related to transducer blocks. For a list of enumeration values, see FF-902. See tables below for a list of sub-parameters that pertain to XD_ERROR messages.
  • Page 53 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-15. Transducer Block Parameters Number Parameter Description SENSOR_CAL Parameter structure to allow for calibration of each sensor. See tables below for a list of sub-parameters that pertain to Sensor Calibration functions. CAL_STATUS Status of the calibration that was previously performed.
  • Page 54 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-15. Transducer Block Parameters Number Parameter Description VALIDATION_SNSR3_CONFIG Validation configuration parameters. See tables below for a list of sub-parameters that pertain to Validation Configuration functions. VALIDATION_SNSR3_VALUES Validation value parameters. See tables below for a list of sub-parameters that pertain to Validation values.

  • Page 55: Transducer Block Sub-Parameter Tables

    Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 3.4.8 Transducer block sub-parameter tables Table 3-16. XD_ERROR Sub-parameter Structure XD ERROR Description No Error An error has occurred that could not be classified as one of the General Error errors listed below.
  • Page 56 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-18. SENSOR_STATUS Sub-parameter Structure Sensor status table 0x00 Active 0x01 Out of Service 0x02 Inactive 0x04 Open 0x08 Short 0x10 Out of Range 0x20 Beyond Limits 0x40 Excess EMF Detected 0x80 Other Table 3-19.
  • Page 57 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-21. Transducer Status Sub-parameter Structure Transducer status table 0x01 A/D Failure 0x02 Sensor Failure 0x04 Dual Sensor Failure 0x08 CJC Degraded 0x10 CJC Failure 0x20 Body Temp Failure 0x40 Sensor Degraded 0x80 Body Temperature Degraded...
  • Page 58 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Table 3-24. Validation Value Sub-parameter Structure Validation value sub-parameter structure Parameter Description VALIDATION_STATUS State of the channel specific measurement validation measurement DEVIATION_VALUE Deviation output value DEVIATION_STATUS Status of the deviation output RATE_OF_CHANGE_VALUE Rate of change value output RATE_OF_CHANGE_STATUS...
  • Page 59 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Sensor calibration in the sensor transducer block If the F fieldbus configuration tool or host system does not support the use of DD OUNDATION methods for device configuration, the following steps illustrate how to calibrate the sensor from the sensor transducer block.
  • Page 60 Reference Manual Section 3: Configuration 00809-0100-4697, Rev GA November 2014 Configuration...

  • Page 61: 4Section 4: Operation And Maintenance

    It is a local area network (LAN) for instruments that enable basic control and I/O to be moved to the field devices. The Model 848T uses F fieldbus technology developed and supported by Emerson Process OUNDATION Management and the other members of the independent Fieldbus Foundation.

  • Page 62: Commissioning (Addressing)

    4.3.1 Sensor check To determine whether the sensor is causing the malfunction, connect a sensor calibrator or simulator locally at the transmitter. Consult an Emerson Process Management representative for additional temperature sensor and accessory assistance. 4.3.2 Communication/power check If the transmitter does not communicate or provides an erratic output, check for adequate voltage to the transmitter.

  • Page 63: Resetting The Configuration (Restart)

    Reference Manual Section 4: Operation and Maintenance 00809-0100-4697, Rev GA November 2014 4.3.3 Resetting the configuration (RESTART) There are two types of restarts available in the Resource Block. The following section outlines the usage for each of these. For further information, see RESTART in Table 3-2 on page 3-25.

  • Page 64: Resource Block

    Reference Manual Section 4: Operation and Maintenance 00809-0100-4697, Rev GA November 2014 4.4.2 Resource block Symptom Possible causes Corrective action Mode will not leave Target mode not set Set target mode to something other than OOS. BLOCK_ERR will show the lost NV Data or Lost Static Data bit set. Memory Failure Restart the device by setting RESTART to Processor.

  • Page 65: Aappendix A: Reference Data

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Appendix A Reference Data Functional specifications ........... . . page 57 Physical specifications .

  • Page 66: Update Time

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 A.1.8 Update time Approximately 1.5 seconds to read all 8 inputs. A.1.9 Humidity limits 0–99% non-condensing relative humidity A.1.10 Turn-on time Performance within specifications is achieved in less than 30 seconds after power is applied to the transmitter.

  • Page 67: Environmental Ratings

    Appendix A: Reference Data Reference Manual November 2014 00809-0100-4697, Rev GA Materials of construction for optional junction box Junction box type Paint Aluminum Epoxy Resin Plastic Stainless Steel Aluminum Explosion-proof Weight Weight Assembly Rosemount 848T only .208 Aluminum 78.2 4.89 2.22 Plastic 78.2...

  • Page 68: Performance Specifications

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Performance specifications A.4.1 Stability ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for 2 years for RTDs  ±0.1% of reading or 0.1 °C (0.18 °F), whichever is greater, for 1 year for thermocouples. ...

  • Page 69: Differential Configuration Notes

    (2) Multi-point (up to 8 points) thermocouples and RTDs are available for purchase with the Rosemount 848T. Input ranges and accuracy for these sensors will depend on the specific multi-point sensor chosen. For more information, contact your local Emerson representative.

  • Page 70: Ambient Temperature Effect

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Table A-2. Analog Sensors Sensor option Alarm levels Accuracy 4–20mA (Rosemount Standard) 3.9 to 20.8 mA ± 0.01mA 4–20mA (NAMUR) 3.8 to 20.5 mA ± 0.01mA A.4.9 Ambient temperature effect Transmitter may be installed in locations where the ambient temperature is between -40 and 85 °C (-40 and 185 °F).

  • Page 71: A.4.11Ambient Temperature Notes

    Appendix A: Reference Data Reference Manual November 2014 00809-0100-4697, Rev GA NIST type Accuracy per 1.0 °C (1.8 °F) change in ambient temperature °C Temperature range (°C) Type R, Type S • R ≥ 200 • 0.016 °C • R < 200 •...

  • Page 72: Dimensional Drawings

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Dimensional drawings Junction boxes with no entries (option codes JP1, JA1, and JS1)– external dimensions are the same as those outlined for the other junction box materials in this section. Rosemount 848T Side View Top View...
  • Page 73 Appendix A: Reference Data Reference Manual November 2014 00809-0100-4697, Rev GA Stainless-Steel Junction Box—Cable Gland (Option Code JS2) Top View 3-D View 9.91 (231) 7.7 (196) Ground Screw Side View Front View 1.8 (46) 9.14 (232.2) 1.1 (28) 7.72 (196) 1.73 (44) 6.61 (168) 4.0 (102)

  • Page 74: Mounting Options

    Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Stainless-Steel Junction Box—Conduit Entry (Option Code JS3) Top view 3-D view 9.1 (231) 7.7 (196) Ground Screw Front view Side view 1.4 (35) 1.1 (27) 2.8 (70) 1.2 (30) 4.0 (102) 2.4 (62) 1.8 (4.7)

  • Page 75: Ordering Information

    Appendix A: Reference Data Reference Manual November 2014 00809-0100-4697, Rev GA Ordering information Table A-3. Rosemount 848T F fieldbus Ordering Information OUNDATION ★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery. __The Expanded offering is subject to additional delivery lead time.
  • Page 76 Reference Manual Appendix A: Reference Data 00809-0100-4697, Rev GA November 2014 Table A-3. Rosemount 848T F fieldbus Ordering Information OUNDATION ★ The Standard offering represents the most common options. The starred options (★) should be selected for best delivery. __The Expanded offering is subject to additional delivery lead time. ★...
  • Page 77 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Appendix B Product Certificates European Directive Information ..........page 69 Intrinsically Safe and Non-Incendive installations .
  • Page 78 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 FM FISCO Certificate: 3011568 Standards: FM Class 3600:1998, FM Class 3610:2010, FM Class 3611:2004, FM Class 3810:2005, ANSI/ISA 60079-0:2009, ANSI/ISA 60079-11:2009, NEMA 250:1991, IEC 60529:2011 Markings: IS CL I, DIV 1, GP A, B, C, D; T4 (-50 °C ≤ Ta ≤ +60 °C); NI CL I, DIV 2, GP A, B, C, D; T4A (-50 °C ≤...
  • Page 79 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 CSA Intrinsically Safe and Division 2 Certificate: 1261865 Standards: CAN/CSA C22.2 No. 0-M91 (R2001), CAN/CSA C22.2 No. 94-M91, CSA Std. C22.2 No. 142-M1987, CSA Std. C22.2 No. 157-92, CSA Std. C22.2 No. 213-M1987, CSA Std.
  • Page 80 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Table B-2. ATEX Entity Parameters Sensor Field Terminal Fieldbus (Input) (Output) = 30 V = 12.5 V = 300 mA = 4.8 mA = 1.3 W = 15 mW = 1.2 μF = 2.1 nF = 1 H...
  • Page 81 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Special Conditions for Safe Use (X): The component must be installed in a suitable component certified enclosure that provides a degree of protection of at least IP54 and meets the relevant material and environmental requirements of EN 60079-0:2006 and EN 60079-15:2005.
  • Page 82 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Special Conditions of Safe Use (X): The equipment must be installed in an enclosure that provides a degree of protection of at least IP20. Non-metallic enclosures must be suitable to prevent electrostatic hazards and light allow or zirconium enclosures must be protected from impact and friction when installed.
  • Page 83 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Special Conditions of Safe Use: The component must be installed in a suitable component certified enclosure that provides a degree of protection of at least IP54 and meets the relevant material and environmental requirements of EN 60079-0:2006 and EN 60079-15:2005.
  • Page 84 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Special Conditions of Safe Use: The equipment must be installed in an enclosure that provides a degree of protection of at least IP20 and which is appropriate to the application specified in ABNT NBR IEC60079-0.
  • Page 85 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 This apparatus is not capable of withstanding the 500 V rms insulation test required by Clause 6.4.12 of GB3836.4-2000. The ambient temperature range of the equipments is T4 (– 50 °C ≤ T ≤...
  • Page 86 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres Part 16: Inspection and maintenance of electrical installation (other than mines).” GB50257-1996 “Code for construction and acceptance of electric device for explosion atmospheres and fire hazard electrical equipment installation” NEPSI Type n Certificate: GYJ12.1035U Standards: GB3836.1-2010, GB3836.8-2003...
  • Page 87 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Combinations Combination of I1/IA, I5/IE, I6/IF, and I7/IG Conduit Plugs and Adapters ATEX Flameproof and Increased Safety Certificate: FM13ATEX0076X Standards: EN 60079-0:2012, EN 60079-1:2007, IEC 60079-7:2007 Marking 2 G Ex de IIC Gb Special Conditions for Safe Use (X): When the thread adapter or blanking plug is used with an enclosure in type of protection increased safety “e”...
  • Page 88 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Thread adapter thread sizes: Male Thread Identification Mark M20 x 1.5 – 6H ½ - 14 NPT ½ - 14 NPT ¾ - 14 NPT ¾ - 14 NPT Female Thread Identification Mark M20 x 1.5 –...

  • Page 89: Intrinsically Safe And Non-Incendive Installations

    Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Intrinsically Safe and Non-Incendive installations Zone 2 Zone 1 Zone 0 (category 3) (category 2) (category 1) Approval Safe area Division 2 Division 1 GAS INSTALLATIONS I5, I6, I1, Approved I.S.

  • Page 90: Installation Drawings

    Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 B.10 Installation drawings The installation guidelines presented by the drawings must be followed in order to maintain certified ratings for installed transmitters. Rosemount Drawing 00848-4404, 3 Sheets Factory Mutual Intrinsic Safety/ FISCO Installation Drawing Rosemount Drawing 00848-4405, 2 Sheets Canadian Standards Association Intrinsic Safety/FISCO Installation Drawing Product Certificates...
  • Page 91 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Figure B-1. FM Intrinsic Safety/ FISCO Product Certificates...
  • Page 92 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...
  • Page 93 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...
  • Page 94 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Figure B-2. CSA Intrinsic Safety/ FISCO Product Certificates...
  • Page 95 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...
  • Page 96 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...
  • Page 97 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...
  • Page 98 Reference Manual Appendix B: Product Certifications 00809-0100-4697, Rev GA November 2014 Product Certificates...

  • Page 99: Cappendix C: Foundation™ Fieldbus Technology

    Reference Manual Appendix C: F Fieldbus Technology OUNDATION 00809-0100-4697, Rev GA November 2014 ™ Appendix C fieldbus OUNDATION Technology Overview ..............page 89 Function blocks .

  • Page 100: Device Descriptions

    Reference Manual Appendix C: F Fieldbus Technology OUNDATION 00809-0100-4697, Rev GA November 2014 The Fieldbus Foundation specifications and definitions allow vendors to add their own parameters by importing and subclassing specified classes. This approach permits extending function block definitions as new requirements are discovered and as technology advances. Figure C-1 illustrates the internal structure of a function block.

  • Page 101: Block Operation

    Appendix C: F Fieldbus Technology Reference Manual OUNDATION November 2014 00809-0100-4697, Rev GA within devices from various vendors. Additionally, human interface devices, such as operator consoles and computers, do not have to be programmed specifically for each type of device on the bus.

  • Page 102: Las

    Reference Manual Appendix C: F Fieldbus Technology OUNDATION 00809-0100-4697, Rev GA November 2014 Figure C-2. Simple, Single-Link Fieldbus Network A. Link Active Scheduler (LAS) B. Fieldbus Link C. Link Master D. Basic Device and/or Link Master Devices C.5.1 All links have one LAS that operates as the bus arbiter for the link. The LAS does the following: recognizes and adds new devices to the link ...

  • Page 103: Addressing

    Appendix C: F Fieldbus Technology Reference Manual OUNDATION November 2014 00809-0100-4697, Rev GA LAS parameters There are many bus communication parameters but only a few are used. For standard RS-232 communications, the configuration parameters are baud rate, start / stop bits, and parity. The key parameters for H1 F fieldbus are as follows.

  • Page 104: Scheduled Transfers

    Reference Manual Appendix C: F Fieldbus Technology OUNDATION 00809-0100-4697, Rev GA November 2014 fieldbus uses addresses between 0 and 255. Addresses 0 through 15 are reserved for OUNDATION group addressing and for use by the data link layer. If there are two or more devices on a segment with the same address, the first device to start up will use the assigned address.

  • Page 105: Unscheduled Transfers

    Appendix C: F Fieldbus Technology Reference Manual OUNDATION November 2014 00809-0100-4697, Rev GA Figure C-4. Scheduled Data Transfer Schedule X, Y, Z DT(A) CD(X,A) Device X Device Y Device Z LAS = Link Active Scheduler P = Publisher S = Subscriber CD = Compel Data DT = Data Transfer Packet C.5.4...

  • Page 106: Function Block Scheduling

    Reference Manual Appendix C: F Fieldbus Technology OUNDATION 00809-0100-4697, Rev GA November 2014 C.5.5 Function block scheduling Figure C-6 shows an example of a link schedule. A single iteration of the link-wide schedule is called the macrocycle. When the system is configured and the function blocks are linked, a master link-wide schedule is created for the LAS.

  • Page 107: Analog Input (Ai) Function Block

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Appendix D Function Blocks Analog Input (AI) function block ..........page 97 Multiple analog input (MAI) function block .
  • Page 108 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Table D-1. Analog Input Function Block Parameters Number Parameter Units Description The actual, target, permitted, and normal modes of the block. Actual: The mode the “block is currently in” MODE_BLK None Target: The mode to “go to”...
  • Page 109 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Table D-1. Analog Input Function Block Parameters Number Parameter Units Description The time constant of the first-order PV filter. It is the PV_FTIME Seconds time required for a 63% change in the PV or OUT value.

  • Page 110: Functionality

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Table D-1. Analog Input Function Block Parameters Number Parameter Units Description Discrete output to indicate a selected alarm OUT_D None condition. Used to select the process alarm conditions that will ALM_SEL None cause the OUT_D parameter to be set.
  • Page 111 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Figure D-2. Analog Input Function Block Schematic Analog Measurement ALM_SEL Access Analog HI_HI_LIM Meas. Alarm HI_LIM OUT_D Detection LO_LO_LIM LO_LIM CHANNEL ALARM_HYS LOW_CUT Status Cutoff Filter Convert Calc. SIMULATE L_TYPE PV_FTIME MODE...
  • Page 112 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Indirect square root Indirect Square Root signal conversion takes the square root of the value computed with the indirect signal conversion and scales it to the range and units of the PV and OUT parameters. ...
  • Page 113 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Modes The AI Function Block supports three modes of operation as defined by the MODE_BLK parameter. Manual (Man) The value of the block output (OUT) may be set manually Automatic (Auto) OUT reflects the analog input measurement or the simulated value when simulation is enabled.
  • Page 114 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Status handling Normally, the status of the PV reflects the status of the measurement value, the operating condition of the I/O card, and any active alarm condition. In Auto mode, OUT reflects the value and status quality of the PV.

  • Page 115: Ai Block Troubleshooting

    Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA L_TYPE Select Direct when the measurement is in the desired engineering units for the block output. Select Indirect when converting the measured variable into another, for example, pressure into level or flow into energy. SCALING XD_SCALE provides the range and units of the measurement and OUT_SCALE provides the range and engineering units of the output.

  • Page 116: Multiple Analog Input (Mai) Function Block

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Multiple analog input (MAI) function block OUT_1 OUT_2 OUT_3 OUT_4 OUT_5 OUT_6 OUT_7 OUT_8 Out1 = The block output value and status for the first channel. The MAI function block has the ability to process up to eight field device measurements and make them available to other function blocks.
  • Page 117 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Table D-4. Multiple Analog Input Function Block Parameters Number Parameter Units Description CHANNEL None Allows for custom channel setting. Valid values include: 0: Unitialized 1: Channels 1 to 8 (index values 27 to 34 can only be set to their corresponding channel number, i.e.

  • Page 118: Functionality

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Table D-4. Multiple Analog Input Function Block Parameters Number Parameter Units Description 27, 28, CHANNEL_(1, None The CHANNEL (1, 2, 3, 4, 5, 6, 7, 8) value is used to select Table D-4 on page 106 2, 3,4 5, 6, 7, the measurement value.
  • Page 119 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Figure D-4. Multiple Analog Input Function Block Schematic OUT_1 XD_SCALE OUT_SCALE OUT_2 Ch 1 Ch 2 Mode Logic OUT_3 Ch 3 OUT_4 Ch 4 Ch 5 OUT_5 L_TYPE & Ch 6 Filter OUT_6...

  • Page 120: The Ai Function Block Supports Three Modes Of Operation As Defined By The Mode_Blk

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 When the converted input value is below the limit specified by the LOW_CUT parameter, and the Low Cutoff I/O option (IO_OPTS) is enabled (True), a value of zero is used for the converted value (PV).

  • Page 121: Automatic (Auto)

    Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Automatic (Auto) OUT_1 to OUT_8 reflects the analog input measurement or the simulated value when simulation is enabled. Out of Service (OOS) The block is not processed. PV is not updated and the OUT status is set to Bad: Out of Service.

  • Page 122: Mai Block Troubleshooting

    Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 CHANNEL If the device supports more than one measurement, verify that the selected channel contains the appropriate measurement or derived value. Refer to Table D-4 on page 106 a listing of available channels on the 848T. L_TYPE Select Direct when the measurement is already in the desired engineering units for the block output.

  • Page 123: Input Selector Function Block

    Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Input selector function block IN_1 IN_2 IN_3 IN_4 IN_5 IN_6 OUT_D IN_7 IN_8 DISABLE_1 SELECTED DISABLE_2 DISABLE_3 DISABLE_4 DISABLE_5 DISABLE_6 ISEL DISABLE_7 DISABLE_8 OP_SELECT IN (1-8) = Input DISABLE (1-8) = Discrete input used to disable the associated input channel SELECTED = The selected channel number OUT = The block output and status OUT_D = Discrete output that signals a selected alarm condition...
  • Page 124 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Table D-6. Input Selector Function Block Parameters Number Parameter Units Description BLOCK_ERR None This parameter reflects the error status associated with the hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

  • Page 125: Functionality

    Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Table D-6. Input Selector Function Block Parameters Number Parameter Units Description ALARM_HYS Percent The amount the alarm value must return within the alarm limit before the associated active alarm condition clears HI_HI-PRI None...
  • Page 126 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Block errors Table D-7 lists conditions reported in the BLOCK_ERR parameter. Conditions in bold are inactive for the ISEL block and are given for reference. Table D-7. BLOCK_ERR Conditions Number Name and description Other: The output has a quality of uncertain.
  • Page 127 Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Alarm detection A block alarm will be generated whenever the BLOCK_ERR has an error bit set. The type of block errors for the ISEL block are defined above. Process Alarm detection is based on the OUT value. The alarm limits of the following standard alarms can be configured.
  • Page 128 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 If the OP_SELECT is set to a value between 1 and 8, the selection type logic is overridden and the output value and status is set to the value and status of the input selected by OP_SELECT. SELECTED will have the number of selected input unless the SELECT_TYPE is mid, in which case it will take the average of the two middle values.

  • Page 129: Isel Block Troubleshooting

    Appendix D: Function Blocks Reference Manual November 2014 00809-0100-4697, Rev GA Figure D-7. Input Selector Function Block Application Example (SEL_TYPE = average) AVG_USE = 6 Input Selector IN1 = 126 °F (ISEL) Function IN2 = 118 °F Block IN3 = 104 °F To Another OUT = 118 °F IN4 = 107 °F...
  • Page 130 Reference Manual Appendix D: Function Blocks 00809-0100-4697, Rev GA November 2014 Function Blocks...
  • Page 131 Reference Manual Index 00809-0100-4697, Rev GA November 2014 Index ....... . . 20 Numerics Configuration .
  • Page 132 Reference Manual Index 00809-0100-4697, Rev GA November 2014 ........17 Installation .
  • Page 133 Reference Manual Index 00809-0100-4697, Rev GA November 2014 ......15 Simulate Enable Switch Specifications ......87 Network Communication .
  • Page 134 Reference Manual Index 00809-0100-4697, Rev GA November 2014 Index-4 Index...
  • Page 136 November 2014 Standard Terms and Conditions of Sale can be found at www.rosemount.com/terms_of_sale The Emerson logo and DeltaV are trademarks of Emerson Electric Co. Rosemount. PlantWeb, and the Rosemount logotype are registered trademarks of Rosemount Inc. HART is a registered trademark of the HART Communication Foundation.

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