Download
Share
Print this page
Emerson Rosemount 2051 Reference Manual
  1. Manuals
  2. Brands
  3. Emerson Manuals
  4. Transmitter
  5. Rosemount 2051
  6. Reference manual
Emerson Rosemount 2051 Reference Manual

Emerson Rosemount 2051 Reference Manual

Pressure transmitter with foundation fieldbus protocol
Hide thumbs Also See for Rosemount 2051:

Advertisement

Quick Links

Download this manual
Reference Manual
00809-0200-4101, Rev CB
December 2024
Rosemount
™
2051 Pressure Transmitter
with F
Fieldbus Protocol
™
OUNDATION

Advertisement

loading
Need help?

Need help?

Do you have a question about the Rosemount 2051 and is the answer not in the manual?

Questions and answers

Related Manuals for Emerson Rosemount 2051

Summary of Contents for Emerson Rosemount 2051

  • Page 1 Reference Manual 00809-0200-4101, Rev CB December 2024 Rosemount ™ 2051 Pressure Transmitter with F Fieldbus Protocol ™ OUNDATION...
  • Page 2  WARNING Replacement equipment or spare parts not approved by Emerson for use as spare parts could reduce the pressure retaining capabilities of the transmitter and may render the instrument dangerous. Use only bolts supplied or sold by Emerson as spare parts.
  • 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 your local Emerson Sales Representative.
  • Page 5 3.5 Hazardous locations certifications..................66 3.6 Rosemount 304, 305, and 306 Manifolds................66 3.7 Liquid level measurement......................74 Chapter 4  Electrical installation......................79 4.1 Overview.............................79 4.2 Install LCD display........................79 4.3 Configuring transmitter security and simulation..............80 4.4 Electrical considerations......................81 4.5 Wiring............................82 Chapter 5  Operation and maintenance....................87 5.1 Overview.............................87 5.2 Calibration overview......................... 87 www.Emerson.com...
  • Page 6 5.3 Trimming the pressure signal....................90 Chapter 6  Troubleshooting........................91 6.1 Overview.............................91 6.2 Disassembling the transmitter....................91 6.3 Reassemble the transmitter.....................93 6.4 Troubleshooting guides......................95 6.5 Troubleshooting and diagnostic messages................98 6.6 Analog input (AI) function block....................101 Chapter 7  Reference data........................105 7.1 Ordering information, specifications, and drawings............105 7.2 Product certifications......................105 www.Emerson.com...
  • Page 7 Introduction 00809-0200-4101 December 2024 1  Introduction 1.1  Overview This manual is for the Rosemount 2051 Pressure Transmitter with F fieldbus ™ OUNDATION communications. This manual only describes the topics required for installation, operation, configuration, and troubleshooting the Foundation fieldbus transmitter. 1.2 ...
  • Page 8 DP and GP measurements. The Rosemount 2051T and 2051CA utilize piezoresistive sensor technology for AP and GP measurements. The major components of the Rosemount 2051 are the sensor module and the electronics housing. The sensor module contains the oil filled sensor system (isolating diaphragms, oil fill system, and sensor) and the sensor electronics.
  • Page 9 ) file revision for this device. The DD can be found on Field ™ Comm Group. The DTM can be found at Software & Drivers. The current release of the Rosemount 2051 with F Fieldbus protocol is Device Revision 2. This manual is ™ OUNDATION for Revision 2. www.Emerson.com...
  • Page 10 Introduction Reference Manual December 2024 00809-0200-4101 1.6  Product recycling/disposal Consider recycling equipment and packaging. Dispose of the product and packaging in accordance with local and national legislation. www.Emerson.com...
  • Page 11 DD and DTM based interfaces ™ The Rosemount 2051 Pressure Transmitter Rev 2 has both DD-based and DTM-based user interfaces available. All device configuration and maintenance tasks can be performed using either technology. The DD capabilities supported will vary based on host supplier and host revision. Check with your host supplier to determine and obtain the appropriate DD for your situation.
  • Page 12 On this PC based configuration screen, alert configuration for all four alert categories is performed on a single screen. Home screen 2.2  The Home screen provides access to the three main branches of the menu tree. • Overview • Configure www.Emerson.com...
  • Page 13 Overview section of the Menu Tree Figure 2-4: Navigation selections available Black text Name of selection used on parent menu screen to access this screen (Text) Automated methods Green text Configure 2.4  Guided Setup branch of the Menu Tree Figure 2-5: www.Emerson.com...
  • Page 14 Classic View of the Menu Tree Figure 2-7: Navigation selections available Black text (Text) Name of selection used on parent menu screen to access this screen Automated methods Green text Red text Configuration task numbers from configuration flow chart www.Emerson.com...
  • Page 15 • Function Check Alerts To minimize configuration tasks and time, the Rosemount 2051 ships from the factory with alerts enabled and pre-categorized. The use of factory default categories is recommended if the defaults meet plant standards, and there is no identified benefit to changing categories.
  • Page 16 Name of selection used on parent menu screen to access this screen (Text) Green text Automated methods The Service Tools branch of the menu tree allows users to perform typical device maintenance tasks, simulate alerts and parameters, and perform some configuration resets to return devices to as-manufactured settings. www.Emerson.com...
  • Page 17 Reference Manual Configuration 00809-0200-4101 December 2024 Figure 2-10: Complete Menu Tree Navigation selections available Black text (Text) Name of selection used on parent menu screen to access this screen Automated methods Green text www.Emerson.com...
  • Page 18 Guided setup with automated task procedures (Methods) Guided Setup provides automated task procedures for tasks which require multiple steps to perform. Guided Setup also provides notification of recommended actions, such as suggesting the device user contact control room personnel to have the process loop placed www.Emerson.com...
  • Page 19 Note Classic View is NOT recommended for anyone who is not a device and F ™ OUNDATION Fieldbus expert. Expert users will use Classic View to review all block parameters, and to perform some configuration or service tasks. www.Emerson.com...
  • Page 20 Fieldbus.org. 2. Select Device Driver. 3. Search by product name. 4. Within Table 2-1, use the Device Revision numbers to find the correct Device Driver. Table 2-1: Rosemount 2051 F Fieldbus Device Revisions and Files ™ OUNDATION Device Host...
  • Page 21 2.9.1  Link active scheduler The Rosemount 2051 can be designated to act as the backup Link Active Scheduler (LAS) in the event that the LAS is disconnected from the segment. As the backup LAS, the 2051 will take over the management of communications until the host is restored.
  • Page 22 Arithmetic block The Arithmetic (ARTH) Function Block provides the ability to configure a range extension function for a primary input. It can also be used to compute nine different arithmetic www.Emerson.com...
  • Page 23 Revision 1 Revision 2 Resource Block 1000 1000 Sensor Transducer Block 1100 1100 Display Transducer Block 1200 1200 Analog Input Block 1400, 1500 1400, 1500 PID Block 1600 1600 Input Selector Block 1700 1700 Signal Characterizer Block 1800 1800 www.Emerson.com...
  • Page 24 In this mode, variables that are passed out of the block can be manually set for testing or override purposes. Other types of Other types of modes are Cas, RCas, ROut, IMan and LO. Some of these modes may be supported by different function blocks in the Rosemount 2051. www.Emerson.com...
  • Page 25 2.11.3  Block instantiation The Rosemount 2051 supports the use of Function Block Instantiation. When a device supports block instantiation, the number of blocks and block types can be defined to match specific application needs.The number of blocks that can be instantiated is only limited by the amount of memory within the device and the block types that are supported by the device.
  • Page 26 FEATURES_SEL is used to turn on any of the supported features that are found in the FEATURES parameter. The default setting of the Rosemount 2051 does not select any of these features. Choose one or more of the supported features if any.
  • Page 27 4. Unmasked alert conditions are annunciated by the appropriate status signal to the host. Example PlantWeb Alerts and NE107 alerts are both processed using the steps described above, and annunciate the same consolidated status parameters. Figure 2-12: NE107 Alert Processing Diagram www.Emerson.com...
  • Page 28 2 = Reserved for alerts that do not require the attention of a plant operator, e.g. diagnostic and system alerts. Block alert, error alert, and update event have a fixed priority of 2. 3-7 = Increasing higher priorities - advisory alerts. www.Emerson.com...
  • Page 29 The device should be checked to determine the type of abnormal condition and recommended actions to resolve it. 4. FD_CHECK_ACTIVE a. Function check A FD_CHECK_ACTIVE alert indicates a transducer block is not in Auto mode. This may be due to configuration or maintenance activities. www.Emerson.com...
  • Page 30 Manual configuration may be required. DeltaV assigns a ™ priority of two or higher. The priority is based on status signal category. The status signal priority determines the behavior of both real and simulated alerts. www.Emerson.com...
  • Page 31 An ADVISE_ALM indicates a transducer block is not in Auto mode. This may be due to configuration or maintenance activities. It can also indicate an abnormal process or device condition exists. The device should be checked to determine the type of abnormal condition and recommended actions to resolve it. www.Emerson.com...
  • Page 32 To disable the Software Write Lock (devices ship from the factory with the software write lock disabled): • Navigation: From the overview screen, select Device Information and then select the Security and Simulation tab. • Perform Write Lock Setup to disable Software Write Lock. www.Emerson.com...
  • Page 33 2. To select the Signal Conditioning L_TYPE from the drop-down menu: a) Select L_TYPE: Direct for pressure measurements using the device default units. b) Select L_TYPE: Indirect for other pressure or level units. www.Emerson.com...
  • Page 34 The LCD display will continuously scroll through the selected parameters. 7. Review transmitter configuration and place in service: a) To review the transmitter configuration, navigate using the Manual setup navigation sequences for AI Block Unit Setup, Change Damping, and Set up LCD Display. www.Emerson.com...
  • Page 35 A minimum of four parameters are required to configure the AI Block. The parameters are described below with example configurations shown at the end of this section. CHANNEL Select the channel that corresponds to the desired sensor measurement. The 2051 measures both pressure (channel 1) and sensor temperature (channel 2). www.Emerson.com...
  • Page 36 XD_SCALE to represent the operating range that the sensor will see in the process. Determine the inferred measurement values that correspond to the XD_SCALE 0 and 100% points and set these for the OUT_SCALE. Parameters Enter data Channel 1=Pressure, 2=Sensor Temp L-Type Direct, Indirect, or Square Root www.Emerson.com...
  • Page 37 The level of an open tank is to be measured using a pressure tap at the bottom of the tank. The maximum level at the tank is 16 ft. The liquid in the tank has a density that makes the maximum level correspond to a pressure of 7.0 psi at the pressure tap (see Figure 2-14). www.Emerson.com...
  • Page 38 In this example, when PV is 5 psi, then the OUT parameter will be calculated as follows: Situation #3 The transmitter in Situation #3 is installed below the tank in a position where the liquid column in the impulse line, with an empty tank, is equivalent to 2.0 psi (see Figure 2-15). www.Emerson.com...
  • Page 39 Based on the orifice specification sheet, the differential pressure transmitter was calibrated for 0 to 20 inH 0 for a flow of 0 to 800 gal/min. Solution The table below lists the appropriate configuration settings. Parameter Configured values L_TYPE Indirect Square Root XD_SCALE 0 to 20 in.H www.Emerson.com...
  • Page 40 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). This option is useful to eliminate false readings when the www.Emerson.com...
  • Page 41 OUT without generating an alarm. The use of these sub-status in OUT is determined by this option. Through this option, the user may determine whether alarming (sending of an alert) will be done by the block or propagated downstream for alarming. www.Emerson.com...
  • Page 42 Before performing any configuration or service task, contact the control room and have the loop placed in Manual mode. When configuration or service tasks are complete, contact the control room so appropriate return to Automatic control can take place. www.Emerson.com...
  • Page 43 Method which allows damping to be changed. Procedure 1. The device will be placed Out of service. 2. Enter the new damping value in seconds. 3. The device will be returned to Auto mode. 2.15.3  Gauge scaling Menu Navigation: Overview www.Emerson.com...
  • Page 44 Basic Display Setup provides a check-the-box way for the user to configure up to four parameters to display on the LCD display. These parameters are displayed on a rotating basis. Procedure 1. Check the box next to each parameter the LCD display should display. www.Emerson.com...
  • Page 45 Figure 2-20: LCD Display Advanced Configuration Screen The screen shown in Figure 2-20 above provides the capability to define parameters for display beyond those defined in Basic Configuration. Configuration fields for Parameters 2, 3, and 4 are provided but not shown in the image. www.Emerson.com...
  • Page 46 ™ The objective of alerts is to inform users of conditions of interest, and guide the user to effective corrective actions. The Rosemount 2051 Revision 2 Pressure Transmitter with Fieldbus communications provides alerts in both NE107 format and PlantWeb ™...
  • Page 47 Alerts can be assigned to more than a single category by checking the same alert check box in multiple categories. Note Emerson does not recommend this as alarms can proliferate increasing the complexity of alarm management and delaying corrective action. Use of the factory default alert categories is recommended.
  • Page 48 This suppresses the alert in that category. Alerts can be suppressed by category if the alert is configured to multiple categories. This allows alerts to be selectively suppressed. To stop suppressing an alert, click on the checked box suppressing the alert. www.Emerson.com...
  • Page 49 There are two methods to suppress PlantWeb Alerts. The first is to assign an alert category, Failed, Maintenance, or Advisory, a priority of 0 or 1. This will suppress all alerts in that category. The second is to suppress individual alerts using NE 107 Alert suppression. www.Emerson.com...
  • Page 50 The simulated status will be displayed everywhere device status is displayed. Alert Simulation is Enabled and Disabled using an automated procedure called a ‘Method’. www.Emerson.com...
  • Page 51 When the write lock procedure is initiated, it first informs the user if write lock is currently enabled, and if it is configured as hardware or software write lock. www.Emerson.com...
  • Page 52 Figure 2-26: Security and Simulation Display Screen The screen shown in Figure 2-26 above allows users to see if the device has simulation active, to see if any form of write lock is active, and to configure hardware and software write lock. www.Emerson.com...
  • Page 53 00825-0200-4101) is shipped with every transmitter to describe recommended pipe-fitting and wiring procedures for initial installation. For dimensional drawing information, refer to the Dimensional Drawings section of the Rosemount 2051 Product Data Sheet. Note For transmitter disassembly and reassembly, refer to...
  • Page 54 0011512051010001440 -12169809172 001151AC00010001440-12169809172 Device Barcode Device Barcode DEVICE REVISION: 1.1 DEVICE REVISION: 2.1 S / N : S / N : PHYSICAL DEVICE TAG PHYSICAL DEVICE TAG A. Device revision 3.3.2  Transmitter tag If a permanent tag is ordered: www.Emerson.com...
  • Page 55 Installation procedures 3.4.1  Mounting options For dimensional drawing information, refer to the Dimensional Drawings section of the Rosemount 2051 Product Data Sheet. Process flange orientation Mount the process flanges with sufficient clearance for process connections. For safety reasons, place the drain/vent valves so the process fluid is directed away from possible human contact when the vents are used.
  • Page 56 ✓ Figure 3-2: Mounting bracket option code B4 A. ⅜ - 16 x 1¼ bolts for mounting to transmitter B. 5/16 x 3½ bolts for panel mounting (not supplied) Figure 3-3: Mounting bracket option codes B1, B7, and BA www.Emerson.com...
  • Page 57 Bolts are identified by their head markings: A. Carbon steel (CS) head markings B. Stainless steel (SST) head markings Note The last digit in the head marking may be any letter between F593_ www.Emerson.com...
  • Page 58 00809-0200-4101 Bolt installation Only use bolts supplied with the 2051 or provided by Emerson as spare parts. When installing the transmitter to one of the optional mounting brackets, torque the bolts to 125 in-lb. (0,9 N-m). Use the following bolt installation procedure: Procedure 1.
  • Page 59 Reference Manual Hardware installation 00809-0200-4101 December 2024 Figure 3-6: Traditional Flange Bolt Configurations - Differential transmitter A. Drain/vent Figure 3-7: Traditional Flange Bolt Configurations - Gauge transmitter Note Dimensions are in inches (millimeters). A. Drain/vent B. Plug www.Emerson.com...
  • Page 60 Density variations between the legs The best location for the transmitter in relation to the process pipe is dependent on the process. Use the following guidelines to determine transmitter location and placement of impulse piping: • Keep impulse piping as short as possible. www.Emerson.com...
  • Page 61 NOTICE For steam or other elevated temperature services, it is important that temperatures at the process connection do not exceed the transmitter’s process temperature limits. See Temperature Limits in the 2051 Product Data Sheet for details. www.Emerson.com...
  • Page 62 Hardware installation Reference Manual December 2024 00809-0200-4101 Figure 3-9: Liquid applications installation example Figure 3-10: Gas installation example A. Flow www.Emerson.com...
  • Page 63  WARNING Process leaks Process leaks could result in death or serious injury. Install and tighten all four flange bolts before applying pressure. Do not attempt to loosen or remove flange bolts while the transmitter is in service. www.Emerson.com...
  • Page 64 PTFE O-rings tend to cold flow, which aids in their sealing capabilities. Figure 3-12: O-rings for Rosemount 3051S, 3051, 2051, 3001, 3095, and 2024 A. Flange adapter B. O-ring C. PFTE based D. Elastomer NOTICE If the flange adapter is removed, then the PTFE O-rings must be replaced. www.Emerson.com...
  • Page 65 3. If the desired location cannot be achieved due to thread limitation, rotate the housing counterclockwise to the desired location (up to 360° from thread limit). 4. Retighten the housing rotation set screw to no more than 7 in-lb when desired location is reached. www.Emerson.com...
  • Page 66 You can mount the traditional 305 Integral Manifold to most primary elements with mounting adapters in the market today. The 306 Integral Manifold is used with the 2051T In-Line Transmitters to provide block-and-bleed valve capabilities of up to 10,000 psi (690 bar). www.Emerson.com...
  • Page 67 O-rings designed for Rosemount transmitters. NOTICE If replacing the O-rings, take care not to scratch or deface the O-ring grooves or the surface of the isolating diaphragm while you remove the damaged O-rings. www.Emerson.com...
  • Page 68 3. Leak-check assembly to maximum pressure range of transmitter. 3.6.4  Integral manifold operation Operate three-valve manifold Prerequisites In normal operation, the two block valves between the process and instrument ports will be open, and the equalizing valve(s) will be closed. www.Emerson.com...
  • Page 69 F. Process Procedure 1. To zero the transmitter, close the isolate valve to the low pressure (downstream) side of the transmitter first. A. High B. Low C. Drain/vent valve D. Equalize (closed) E. Isolate (open) F. Isolate (closed) G. Process www.Emerson.com...
  • Page 70 3. After zeroing the transmitter, close the equalizing valve. A. High B. Low C. Drain/vent valve D. Equalize (closed) E. Isolate (open) F. Isolate (closed) G. Process 4. Open the isolate valve on the low pressure side of the transmitter to return the transmitter to service. www.Emerson.com...
  • Page 71 In normal operation, the two block valves between the process and instrument ports will be open, and the equalizing valves will be closed. A. High B. Low C. Test (plugged) D. Equalize (closed) E. Isolate (open) F. Process G. Drain vent (closed) www.Emerson.com...
  • Page 72 F. Isolate (closed) G. Process H. Drain vent NOTICE Opening the low side equalize valve before the high side equalize valve will overpressure the transmitter. Do not open the low side equalize valve before the high side equalize valve. www.Emerson.com...
  • Page 73 3. Open the equalize valve on the low pressure (downstream) side of the transmitter. The manifold is now in the proper configuration for zeroing the transmitter. A. High B. Low C. Test (plugged) D. Equalize (open) E. Isolate (open) F. Isolate (closed) G. Process H. Drain vent (closed) www.Emerson.com...
  • Page 74 This is a dry leg condition. Range determination calculations are the same as those described for bottom-mounted transmitters in open vessels, as shown in Figure 3-15. Figure 3-15: Liquid Level Measurement Example A. H B. Zero C. Suppression D. Range E. L F. inH www.Emerson.com...
  • Page 75 Let Y equal the vertical distance between the transmitter datum line and the minimum measurable level (50 in. [1270 mm]). Let z equal the vertical distance between the top of the liquid in the wet leg and the transmitter datum line (600 in. [15240 mm]). www.Emerson.com...
  • Page 76 Bubble air through the tube at a constant flow rate. The pressure required to maintain flow equals the liquid’s specific gravity multiplied by the vertical height of the liquid above the tube opening. Figure 3-17 shows a bubbler liquid level measurement example. www.Emerson.com...
  • Page 77 Let h equal the maximum head pressure to be measured in inches of water. Let Range equal zero to h. Then h = (X)(SG) = 100 x 1.1 = 110 inH Range = 0 to 110 inH A. mA DC B. inH www.Emerson.com...
  • Page 78 Hardware installation Reference Manual December 2024 00809-0200-4101 www.Emerson.com...
  • Page 79 3. Remove screws from the display and rotate it to the desired orientation. a) Insert 10-pin connector into the display board for the correct orientation. Carefully align pins for insertion into the output board. 4. Re-insert screws. 5. Reattach transmitter housing cover. www.Emerson.com...
  • Page 80 — The Security switch can be enabled or disabled in software. To change the switch configuration: Procedure 1. If the transmitter is installed, secure the loop and remove power. 2. Remove the housing cover opposite the field terminal side. www.Emerson.com...
  • Page 81 3. Slide the Security and Simulate switches into the preferred position. 4. Reattach transmitter housing cover.  CAUTION Emerson recommends tightening the cover until there is no gap between the cover and housing to comply with explosion-proof requirements. 4.3.2  Setting Simulate switch The Simulate switch is located on the electronics.
  • Page 82 Note The terminals are not polarity sensitive. The transmitter requires 9–32 Vdc to operate. Emerson recommends Type A F Fieldbus wiring 18 awg twisted shielded pair. Do OUNDATION not exceed 5000 ft. (1500 m) total segment length.
  • Page 83 Do not remove the cover in explosive atmospheres when the circuit is live. Signal wiring supplies all power to the transmitter. 2. Plug and seal the unused conduit connection on the transmitter housing to avoid moisture accumulation in the terminal side. www.Emerson.com...
  • Page 84 Improper grounding is the most frequent cause of poor segment communications. 3. Replace the housing cover. Note Emerson recommends tightening the cover until there is no gap between the cover and the housing. 4. Plug and seal unused conduit connections. Transmitter case grounding  WARNING...
  • Page 85 V5 and T1. Figure 4-4: Internal Ground Connection A. Internal ground location Figure 4-5: External Ground Connection (Option V5 or T1) A. External ground location Note Grounding the transmitter case via threaded conduit connection may not provide sufficient ground continuity. www.Emerson.com...
  • Page 86 The transient protection terminal block can be ordered as an installed option (Option Code T1) or as a spare part to retrofit existing transmitters in the field. See Spare Parts Rosemount 2051 Pressure Transmitter PDS for part numbers. The lightning bolt symbol...
  • Page 87 Trimming adjusts the position of the factory characterization curve. 5.2  Calibration overview Note Emerson fully calibrates the transmitter at the factory. Emerson provides a field calibration option to meet plant requirements or industry standards. Note Sensor calibration allows you to adjust the pressure (digital value) reported by the transmitter to be equal to a pressure standard.
  • Page 88 3. Calculate Total Probable Error (TPE). TPE = = 0.105% of span Where: ±0.04% of span Reference Accuracy Ambient Temperature Effect Span Static Pressure Effect 4. Calculate the stability per month. Zero static pressure effect removed by zero trimming at line pressure. www.Emerson.com...
  • Page 89 5.2.3  Compensating for span line pressure effects (Range 4 and Rosemount 2051 Range 4 and 5 Pressure Transmitters require a special calibration procedure when used in differential pressure applications. The purpose of this procedure is to optimize transmitter performance by reducing the effect of static line pressure in these applications.
  • Page 90 The trim values help optimize performance over a specific measurement range. Figure 5-1: Sensor trim example A. Before trim B. After trim C. Zero/lower sensor trim D. Pressure reading E. Pressure input F. Upper sensor trim www.Emerson.com...
  • Page 91 Do not scratch, puncture, or depress the isolating diaphragms. 6. For the Rosemount 2051C, whenever you remove the process flange or flange adapters, visually inspect the PTFE O-rings. Replace the O-rings if they show any signs of damage, such as nicks or cuts. www.Emerson.com...
  • Page 92 3. Using a 5/64-in. hex wrench, loosen the housing rotation set screw one full turn. 4. Unscrew the module from the housing, making sure the black cap on the sensor module and sensor cable do not catch on the housing. www.Emerson.com...
  • Page 93 3. Tighten the captive mounting screws. 6.3.2  Install terminal block Procedure 1. Gently slide the terminal block into place, making sure the two power posts from the electronics housing properly engage the receptacles on the terminal block. 2. Tighten the captive screws. www.Emerson.com...
  • Page 94 4. Using the same cross pattern, tighten bolts to final torque values seen in Table 6-1. Note If you replaced the PTFE sensor module O-rings, re-torque the flange bolts after installation to compensate for cold flow of the O-ring material. www.Emerson.com...
  • Page 95 3. If you can identify the problem, perform the Recommended Action in Device does not appear on segment. 4. If the problem persists, contact your local Emerson representative. Device does not stay on segment Wiring and installation 31.25 kbit/s, voltage mode, wire medium application guide AG-140 available from the FieldComm Group ™...
  • Page 96 Recommended actions 1. Check for two terminators. 2. Check for excess cable length. 3. Verify power supply or conditioner is good. 4. If the problem persists, contact your local Emerson representative. Potential cause Excess noise on segment Note Reference host documentation for procedure.
  • Page 97 2. Refer to host documentation for procedure. 3. See Device capabilities for device network parameter values. 4. If the problem persists, contact your local Emerson representative. Device does not stay on segment Note Wiring and installation 31.25 kbit/s, voltage mode, and wire medium application guide AG-140 available from F Fieldbus.
  • Page 98 0x08000000 6.5.2  Sensor failure NE107 and Plantweb alert: Failure ™ An error has been detected in the pressure sensor. Recommended actions • Check the interface cable between the sensor module and the electronics board. • Replace the sensor module. www.Emerson.com...
  • Page 99 Verify the manifold valves are in the proper position. • Check the transmitter pressure connection to verify it is not plugged and the isolating diaphragms are not damaged. • Replace the sensor module. Default configuration Enabled LCD display message PRES^OUT LIMITS Associated status bits 0x00200000 www.Emerson.com...
  • Page 100 ™ The statistical process monitor has detected either a mean variation or high or low dynamics in the process. Recommended actions • Check the statistical process monitor status in the diagnostics transducer block. • Check for plugged impulse lines. www.Emerson.com...
  • Page 101 Actual Mode to Auto. Default configuration Enabled LCD display message Associated status bits 0x00000001 6.6  Analog input (AI) function block This section describes error conditions that are supported by the AI Block. Reference the sections below to determine the appropriate corrective action. www.Emerson.com...
  • Page 102 2. Replace the sensor module. No BLOCK_ERR but readings are not correct If using Indirect mode, scaling could be wrong. Recommended actions 1. Check XD_SCALE parameter. 2. Check OUT_SCALE parameter. No BLOCK_ERR Sensor needs to be calibrated or zero trimmed. www.Emerson.com...
  • Page 103 6.6.2  OUT parameter status reads UNCERTAIN, and substatus reads EngUnitRangViolation Out_ScaleEU_0 and EU_100 settings are incorrect Recommended action See the Analog Input (AI) function block section in the Rosemount 2051 Product Data Sheet. www.Emerson.com...
  • Page 104 Troubleshooting Reference Manual December 2024 00809-0200-4101 www.Emerson.com...
  • Page 105 Reference data 00809-0200-4101 December 2024 7  Reference data 7.1  Ordering information, specifications, and drawings To view current Rosemount 2051 Pressure Transmitter ordering information, specifications, and drawings: Procedure 1. Go to the Rosemount 2051 Coplanar Pressure Transmitter Product Detail Page. ™ 2. Scroll as needed to the green menu bar and click Documents & Drawings.
  • Page 106 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 of their respective owners.