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Siemens Sitrans LR250 Operating Instructions Manual
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Siemens Sitrans LR250 Operating Instructions Manual

Siemens Sitrans LR250 Operating Instructions Manual

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Radar Transmitters
SITRANS LR250 (PROFIBUS PA)
Operating Instructions 08/2011
SITRANS

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Summary of Contents for Siemens Sitrans LR250

  • Page 1 Radar Transmitters SITRANS LR250 (PROFIBUS PA) Operating Instructions 08/2011 SITRANS...
  • Page 2 The user is responsible for all changes and repairs made to the device by the user or the user’s agent. • All new components are to be provided by Siemens Milltronics Process Instruments. • Restrict repair to faulty components only.

  • Page 3: Table Of Contents

    FCC Conformity ............................1 CE Electromagnetic Compatibility (EMC) Conformity ..............2 The Manual ...............................2 Application Examples ........................3 Technical Support ............................3 Abbreviations and Identifications .......................3 SITRANS LR250 Overview ....................5 Specifications ........................7 Power............................. 7 Performance..........................7 Interface ............................8 Mechanical........................... 8 Environmental ..........................9 Process............................
  • Page 4 Quick Start Wizard via the handheld programmer ...............35 Auto False Echo Suppression ......................37 Requesting an Echo Profile ........................37 Device Address ............................38 Level application example ........................38 Operating via SIMATIC PDM ..................40 Functions in SIMATIC PDM ........................40 Features of SIMATIC PDM Rev. 6.0, SP4 ................40 Features of SIMATIC PDM Rev.
  • Page 5 Power-on Resets......................106 LCD Fast Mode......................106 LCD Contrast........................106 Communication........................106 Device Address ......................106 PROFIBUS Ident Number ................... 107 Security............................. 107 Remote Access......................107 Local Access ......................... 107 Language..........................108 Appendix A: Alphabetical Parameter List ..............109 Appendix B: Troubleshooting ..................112 Communication Troubleshooting ....................112 Device Status Icons ..........................113 General Fault Codes ...........................115...
  • Page 6 Appendix G: Communications via PROFIBUS PA ............. 145 Device Configuration tool ........................145 SIMATIC PDM ..........................145 Network Configuration ........................145 The GSD file ..........................145 Bus Termination ...........................146 Power Demands ..........................146 PROFIBUS address ..........................146 Operating as a Profile Device ......................147 Configuring a device .........................147 Configuring PROFIBUS PA with an S7-300/ 400 PLC ............147 Cyclic versus Acyclic Data ........................148 Cyclic Data ..........................148...

  • Page 7: Safety Notes

    FCC Conformity US Installations only: Federal Communications Commission (FCC) rules WARNING: Changes or modifications not expressly approved by Siemens Milltronics could void the user’s authority to operate the equipment. Notes: • This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.

  • Page 8: Ce Electromagnetic Compatibility (Emc) Conformity

    SITRANS LR250. • This manual applies to the SITRANS LR250 (PROFIBUS PA) only. This manual will help you set up your SITRANS LR250 for optimum performance. We always welcome suggestions and comments about manual content, design, and accessibility.

  • Page 9: Application Examples

    Technical Support Support is available 24 hours a day. To find your local Siemens Automation Office address, phone number and fax number go www.siemens.com/automation/partner • Click on the tab Contact, select Service, then click Service again to find your product group (+Automation Technology >...
  • Page 10 The output from the Level Transducer Block can be called the Primary Value (or Secondary Value). When it becomes the input to the AIFB, it is called the Process Variable. Page 4 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 11: Sitrans Lr250 Overview

    PROFIBUS Class I and Class II master. Programming SITRANS LR250 is very easy to install and configure via a graphical local user interface (LUI). You can modify the built in parameters either locally via the Siemens infrared hand- held programmer, or from a remote location using one of the following options: •...
  • Page 12 Approvals and Certificates Approvals For further details see on page 10. Note: SITRANS LR250 is available with General Purpose approval, or for hazardous areas. In all cases, check the nameplate on your instrument, and confirm the approval rating. Application LR250 Approval Rating...

  • Page 13: Specifications

    Specifications Notes: • Siemens Milltronics makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. Power General Purpose: Intrinsically Safe: Non-Sparking/Energy Limited: Non-incendive: Bus powered Per IEC 61158-2 (PROFIBUS PA)

  • Page 14: Interface

    For 1.5" (40 mm) antenna and 2" (50 mm) threaded PVDF antenna, the dK is limited to 3 unless a stillpipe is used. Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F). Page 8 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 15: Environmental

    −40 to +80 °C (−40 to +176 °F) • relative humidity suitable for outdoor Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure (see note above) • installation category • pollution degree 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 9...

  • Page 16: Process

    FM/CSA Class I, Div. 2, Groups A, B, C, D T5 Intrinsically Safe wiring on page 26 Non-Sparking/Energy Limited on page 28. Non-incendive wiring (only for USA/Canada) on page 28. Page 10 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 17: Programmer (Infrared Keypad)

    • To estimate the lifetime expectancy, check the nameplate on the back for the serial number. The first six numbers show the production date (mmddyy), for example, serial number 032608101V. Siemens Milltronics Infrared IS (Intrinsically Safe) Handheld Programmer for hazardous and all other locations (battery is non-replaceable) • approvals FM/CSA Class I, II, III, Div.

  • Page 18: Threaded Horn Antenna With Extension

    • Process temperature and pressure capabilities are dependent upon information on the process connection tag. Reference drawing listed on the Tag is available on the product page of our website at www.siemens.com/LR250, under Support / Installation drawings. Additional information on process connections is available on the Installation Drawings page under Process Connection Diagrams.

  • Page 19: Threaded Pvdf Antenna

    Serial number: a unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999. The color of the antenna may vary. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 13...

  • Page 20: Flanged Horn

    • Process temperature and pressure capabilities are dependent upon information on the process connection tag. Reference drawing listed on the Tag is available on the product page of our website at www.siemens.com/LR250, under Support / Installation drawings. Additional information on process connections is available on the Installation Drawings page under Process Connection Diagrams.

  • Page 21: Raised Face Flange Per En 1092-1

    O.D. Facing bolt hole circle dia. height = 3 mm thickness sensor reference Facing dia. point process side 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 15...
  • Page 22 (MMDDYY) followed by a number from 001 to 999, (indicating the sequential unit produced). Flange series: the Siemens Milltronics drawing identification. Heat code: a flange material batch code identification. Page 16 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 23: Flat Faced Flange

    165 mm 125 mm 18 mm 24.4 mm DN80 EN PN16 200 mm 160 mm 18 mm 31.8 mm DN100 EN PN16 220 mm 180 mm 18 mm 31.8 mm 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 17...
  • Page 24 (AISI or EU material designation). North American material codes are followed by European ones. For example, material designation 316L/1.4404. Heat code: a flange material batch code identification. Page 18 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 25: Installation

    . In the event the instrument package is replaced, the process connection tag shall be transferred to the replacement unit. • SITRANS LR250 units are hydrostatically tested, meeting or exceeding the require- ments of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment Directive.

  • Page 26: Pressure Equipment Directive, Ped, 97/23/Ec

    Pressure Equipment Directive, PED, 97/23/EC Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts have no pressure-bearing housing of their own and, therefore, do not come under the Pressure Equipment Directive as pressure or safety accessories, (see EU Commission Guidelines 1/8 and 1/20).

  • Page 27: Orientation In A Vessel With Obstructions

    Device toward the obstructions (see orientation on page 22 for an illustration.) display 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 21...

  • Page 28: Mounting On A Stillpipe Or Bypass Pipe

    80 mm (3”) Dielectric constant of material measured on page 8. To equalize pressure and keep the liquid level in the bypass constant with the liquid level in the vessel. Page 22 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 29: Installation Instructions

    For pressure applications see Warning note above. Flanged Versions Flanged Horn Raised Face Flange per EN 1092-1 Flat on page 14, on page 15, and Faced Flange on page 17 for dimensions. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 23...

  • Page 30: Wiring

    Strip the cable jacket for approximately 70 mm (2.75") from the end of the PROFIBUS PA cable, and thread the wires through the gland Connect the wires to the terminals as shown below. (SITRANS LR250 is not polarity sensitive.) Ground the instrument according to local regulations.

  • Page 31: Basic Plc Configuration With Profibus Pa

    26 Non-Sparking/Energy Limited • on page 28 Non-incendive wiring (only for USA/Canada) • on page 28 In all cases, check the nameplate on your instrument, and confirm the approval rating. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 25...

  • Page 32: Plc Configuration With Profibus Pa For Hazardous Areas

    Approved dust-tight and water-tight conduit seals are required for outdoor NEMA 4X / type 4X / NEMA 6, IP67, IP68 locations. Instructions specific to hazardous area installations • Refer to on page 29. Page 26 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 33 Under the entity evaluation concept, SITRANS LR250 has the following characteristics: (input voltage) U = 24 V (input current) I = 250 mA (input power) P = 1.2 W (internal capacitance) Ci (internal inductance) Li Entity Concept: The Entity Concept allows interconnection of intrinsically safe apparatus to associated apparatus not specifically examined in such combination.

  • Page 34: Non-Sparking/Energy Limited

    2. Non-Sparking/Energy Limited The ATEX certificate listed on the nameplate can be downloaded from the product page of our website at: www.siemens.com/LR250. Go to: Support > Approvals / Certificates. • For wiring requirements: follow local regulations.

  • Page 35: Instructions Specific To Hazardous Area Installations

    Aggressive substances:e.g. acidic liquids or gases that may attack metals, or solvents that may affect polymeric materials. Suitable precautions: e.g. establishing from the material’s data sheet that it is resistant to specific chemicals. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 29...

  • Page 36: Operating Via The Handheld Programmer

    Operating via the handheld programmer SITRANS LR250 carries out its level measurement tasks according to settings made via parameters. The settings can be modified locally via the Local User Interface (LUI) which consists of an LCD display and a handheld programmer.

  • Page 37: Handheld Programmer

    The programmer is ordered separately. Key functions in Measurement mode Function Result Updates internal enclosure tem- perature reading. New value is displayed in LCD secondary region. Updates echo confidence value. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 31...

  • Page 38: Programming Sitrans Lr250

    • While the device is in PROGRAM mode the output remains active and continues to respond to changes in the device. • SITRANS LR250 automatically returns to Measurement mode after a period of inactivity in PROGRAM mode (between 15 seconds and 10 minutes, depending on the menu level).
  • Page 39 Open Edit mode. LEFT menu or Open parent menu. arrow parameter menu or Mode Change to MEASUREMENT mode. parameter menu or Home Open top level menu: menu 1. parameter 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 33...
  • Page 40 - Changes from Edit to Navigation mode RIGHT - Moves cursor one space to the right arrow Numeric - or with cursor on Enter sign, accepts the data and editing changes from Edit to Navigation mode Page 34 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 41: Quick Start Wizard Via The Handheld Programmer

    Quick Start settings take effect only after you select Yes to Apply changes in step 1.8. 1.1. Language Selects the language to be used on the LCD and takes effect immediately. English, Deutsch, Français, Español Options 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 35...
  • Page 42 See Mode (2.6.9.1.) on page 86 for more detail. Threaded The point from which High and Low Calibration points are referenced: see Horn Antenna with extension Flanged Horn on page 12 and on page 14. Page 36 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 43: Auto False Echo Suppression

    Suppression to prevent false echo detection. See for instructions. (2.5.10.) TVT setup This feature can also be used if SITRANS LR250 displays a false high level, or the reading is fluctuating between the correct level and a false high level. Requesting an Echo Profile •...

  • Page 44: Device Address

    LEVEL Material level referenced from Low Cal. Point. Low Calibration Point (1.6.) 15.5 Process empty level. High Calibration Point (1.7.) Process full level. Apply? (Apply changes) (1.8.) Save new settings. Page 38 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 45 Notes 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 39...

  • Page 46: Operating Via Simatic Pdm

    Operating via SIMATIC PDM SIMATIC PDM is a software package used to commission and maintain SITRANS LR250 and other process devices. Please consult the operating instructions or online help for details on using SIMATIC PDM. (You can find more information at www.siemens.com/simatic-pdm.)

  • Page 47: Features Of Simatic Pdm Rev. 5.2, Sp1

    WW&objid=10806857&treeLang=en Electronic Device Description (EDD) You can locate the EDD in Device Catalog, under Sensors/Level/Echo/Siemens AG/ SITRANS LR250. The EDD revision must match the Firmware revision in the device. To check it in PDM, go to Level Meter > Identification matching >...

  • Page 48: Quick Start Wizard Via Simatic Pdm

    Launch SIMATIC Manager and create a new project for LR250. Application Guides for setting up PROFIBUS PA devices with SIMATIC PDM can be downloaded from the product page of our website at: www.siemens.com/LR250. Open the menu Device – Master Reset and click on Factory Defaults.
  • Page 49 Step 2 – Application Type Select the application type (level or volume) and the material , then click on NEXT. Configuring a stillpipe application on page 48 for a Low Dielectric Liquid application. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 43...
  • Page 50 For a vessel with obstructions, see False Echo Suppression on page 52. Select the vessel shape, and click on NEXT. Step 4 – Range Set the parameters, and click on NEXT. Page 44 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 51: Linearization

    100% and 0% levels must be entered. The breakpoints can be ordered from top to bottom, or the reverse. Example (values for example purposes only) Level Breakpoint Break- Level Volume value number 0.5 m point value value 19.5 20 m 3000 19.5 8000 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 45...
  • Page 52 In Step 3 – Vessel Shape, choose the vessel shape option Linearization Table. In Step 4 – Range Setup: Linearization a) Enter parameter values and select units. b) Click on Linearization. Page 46 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 53 The message Quick Setup was successful will appear. Click on OK. For display purposes we recommend entering values in ascending order (that is, the low- est values in level 1 and volume 1). 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 47...

  • Page 54: Configuring A Stillpipe Application

    Many parameters are accessed via the 5-level menu in PDM. See pull-down menus on page 49 for the others. Launch SIMATIC PDM, connect to SITRANS LR250, and upload data from the device. Adjust parameter values in the parameter value field then press Enter. The status fields read Changed.

  • Page 55: Parameters Accessed Via Pull-Down Menus

    Download to device Device Diagnostics Upload to PC/PG Toolbar Update Diagnostic Status Status bar 42 Update Wizard - Quick Start Echo Profile Utilities Maintenance Acknowledge Faults Wear Simulation Write Locking Master Reset 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 49...
  • Page 56 Click on the Save button and in the new window enter a name and click on OK. • Click on OK to exit. View Saved Echo Profiles To view a saved profile, click on the tab View Saved Echo Profiles. Page 50 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 57 Change the position of the cursor on the TVT using the Point+ and Point– buttons: raise and lower the TVT using Offset+ and Offset–. • Alternatively, enter values for Point and Offset directly into the dialog boxes. • Click on Transfer to Device. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 51...
  • Page 58 Determine Auto False Echo Suppression Range. Measure the actual distance from the sensor reference point to the material surface using a rope or tape measure. Subtract 0.5 m (20") from this distance, and use the resulting value. Page 52 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 59 Before Auto False Echo Suppression false echo default TVT material level Hover Level echo marker After Auto False Echo Suppression Auto False Echo Suppression Range material level learned default echo marker false echo 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 53...
  • Page 60 Maintenance You can set schedules for: • maintenance of the device based on its projected lifetime • maintenance of the sensor based on its projected lifetime • service • calibration Page 54 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 61 Allows you to input a simulated measured value, status, and quality, in order to test the functioning of an Analog Input Function Block. Open the menu Device – Simulation, and select the desired function block. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 55...
  • Page 62 Enter simulated value and click on Transfer. After simulation is complete, return to Simulate Output, reselect AUTO mode, and click on Transfer. Status Byte on page 149 for more information on status and quality. Page 56 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 63 Factory Defaults Defaults certain exceptions: see on page 58. Standard Resets all resettable parameters excluding device addresses to the Defaults PROFIBUS default settings. Informational Resets parameters such as Tag and Descriptor. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 57...

  • Page 64: Diagnostics

    Note: To view peak sensor values, peak FB1 and FB2 values, or peak electronics Device Diagnostics temperatures, see on page 60. • Sensor Value and simulation setting • Electronics temperature • Measured Value (level, volume, and distance) together with quality and status. Page 58 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 65 Open the menu View – Process Variables and click on Function Blocks to view the channel (level, volume, space, or distance), operating mode (Auto, Manual, or Out of Service), quality, status, simulation setting, and summary of alarms. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 59...
  • Page 66 Device Status, Extended Diagnostics, and Maintenance Diagnostics In the Device Status window, click on the Diagnostics tab, then on the Update diagnostics button, to update diagnostic information and refresh linked icons. Update diagnostics Page 60 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 67 Open the menu View – Device Diagnostics and go to Analog Input 1/Analog Input 2. Click on the tab Overview to see the status of all warnings and alarms. Click on the tab Alarms and Warnings for details. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 61...

  • Page 68: Security

    Open a project, double-click on the device icon, and in the User window select Specialist. Open the menu Options – Settings and click on the Password tab. Enter a new password and re-enter it in the Confirmation window. Click on OK. Page 62 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 69: Operating Via Fdt (Field Device Tool)

    Product Information/Automation Technology/Sensor systems/Process Instrumentation/Software & Communications. The instrument EDD The SITRANS LR250 PROFIBUS PA EDD for SITRANS DTM can be downloaded from the product page of our website at: www.siemens.com/LR250 . Go to Support > Software Downloads. Configuring a new device via FDT The full process to configure a field device via FDT is outlined in an application guide which can be downloaded from the product page of our website at: www.siemens.com/LR250 under...

  • Page 70: Parameter Reference

    Quick Start Wizard via SIMATIC PDM • For access via remote operation see on page Quick Start Wizard via the handheld programmer • For detailed instructions see page 35. 1.1. Language 1.2. Material Page 64 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 71: Setup

    Read only. Corresponds to the software used to update the Field Device. 2.2.4. Order Option Read only. Displays the device type. 2.3. Sensor 2.3.1. Unit Sensor measurement unit. m, cm, mm, ft, in Values Default: m 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 65...
  • Page 72 – CLEF algorithm enabled Propagation Factor (2.5.3.) Related Position Detect (2.5.7.2.) parameters CLEF Range (2.5.7.4.) dK < 3.0 You can configure each of the related parameters, to suit your particular application. Page 66 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 73 Unit (2.3.1.) Related Far Range (2.5.2.) parameters Threaded Horn Antenna The point from which level measurement is referenced (see with extension Flanged Horn on page 12 and on page 14). 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 67...
  • Page 74 The value produced by the echo processing which represents the distance from sen- sor reference point to the target. (see Calibration (2.3.7.) on page 67 for an illustration). Page 68 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 75 Fill Rate Defines the maximum rate at which the reported sensor value is allowed to increase. Allows you to further adjust the SITRANS LR250 response to increases in the actual material level. Fill Rate is automatically updated whenever Response Rate (2.3.8.1.) is altered.

  • Page 76: Linearization

    2.3.8.3. Empty rate Defines the maximum rate at which the reported sensor value is allowed to decrease. Adjusts the SITRANS LR250 response to decreases in the actual material level. Empty Rate is automatically updated whenever Response Rate (2.3.8.1.) is altered Range: 0 to 999999 m / min.
  • Page 77 L maximum volume, level LINEAR TABLE breakpoints, Linearization table volume (level/volume breakpoints) breakpoints Linearization Table must be selected in order for level/volume values [see XY index (2.4.1.5.)] to be transferred. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 71...
  • Page 78 Length of the cylindrical section of a horizontal parabolic end vessel, in Level Units. See Vessel Shape (2.4.1.1.) for an illustration. Range: 0.0000 to 999999 in Level Units Values Default: 0.0 Vessel Shape (2.4.1.1.) Related Parameters Page 72 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 79 Go to Y value (2.4.1.7.) and enter the volume value for the breakpoint just identified. Repeat steps (c) to (e) until values have been entered for all required breakpoints. Level Unit 2.3.2. on page 66. PV Units (volume/level) 2.3.3. on page 66. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 73...

  • Page 80: Signal Processing

    Use this feature if the measured surface can drop below the Low Cal. Point in normal operation. Threaded Horn Antenna with extension Flanged Horn on page 12 and on page Page 74 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 81 Device Status tab. • Check Sensor Peak Values. 2.5.6. Shots The number of echo profile samples averaged to produce a measurement. Range: 1 to 25 Values Default: 25 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 75...
  • Page 82 Range: 0 to 99 Values Default: 5 Related LOE Timer (2.3.6.) Parameters Use this feature when an incorrect material level is reported. Page 76 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 83 Low Calibration CLEF Range Point Range In applications with low dK materials we recommend setting CLEF Range to 0.5 m (1.64 ft) and Position Detect (2.5.7.2.) to Hybrid. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 77...
  • Page 84 2.5.8.1. Echo Lock Ensure the agitator is always running while SITRANS LR250 is Note: monitoring the vessel, to avoid stationary blade detection. Selects the measurement verification process. See Echo Lock (2.5.8.1.) on page 125 for more details.
  • Page 85 Displays the absolute strength (in dB above 1 μV rms) of the echo selected as the measurement echo. –20 to 99 Values (view only) Open the menu Device – Echo Profile Utilities and click on the tab Echo Profile. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 79...
  • Page 86 Determine Auto Suppression Range. Measure the actual distance from the sensor reference point to the material surface using a rope or tape measure. Subtract 0.5 m (20") from this distance, and use the resulting value. Page 80 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 87 Range: 0.00 to 20.00 m Values Default: 1.00 m Press RIGHT ARROW to open Edit mode. Enter the new value and press RIGHT ARROW to accept it. Set Auto False Echo Suppression (2.5.10.1.) 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 81...
  • Page 88 Go to the next Breakpoint and repeat step (c) till all desired breakpoint values have been entered. Before Auto False Echo Suppression After Auto False For an illustration, see Echo Suppression on page 81. Page 82 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 89: Aifb1

    Automatic Mode (AUTO) Manual Mode (MAN) Options Out of Service (O/S) Allows you to put the SITRANS LR250 into Out of Service Mode and then reset it to Automatic Mode. Simulation Manual Mode is used in conjunction with Simulation. See on page 55.
  • Page 90 AIFB1 units. 2.6.6.1. Upper Value Defines the operational upper range value of the output value in AIFB1 units. Range: -999999 to 999999 Values Default: 100% Page 84 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 91 Values Default: 0.50 Enter a value for the hysteresis here, to be used for all warnings and alarms. The units are the same as the Output scale, i.e. AIFB1 units. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 85...
  • Page 92 Substitute value. Value (2.6.9.2.) used as SUB VALUE output value. LAST VALUE Last value. (Store last valid output value). Options Use bad value. (Calculated output value is USE BAD VALUE incorrect). Page 86 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 93: Aifb2

    Navigate to Level Meter > Diagnostics (3.) > Echo Profile (3.1.). Requesting an Echo Profile b) Press RIGHT arrow to request a profile. (See page 37 for more details.) 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 87...

  • Page 94: Fault Reset

    • Click on Transfer to clear the fault. 3.4. Electronics Temperature 3.4.1. Minimum Value The minimum recorded internal electronics temperature of the SITRANS LR250. 3.4.2. Maximum Value The maximum recorded internal electronics temperature of the SITRANS LR250. 3.5. Condensed Status When Enable (3.5.1.) is enabled, you can select the level of severity of errors, and...
  • Page 95 3.5.2. Features supported Read only. Features supported are: • Condensed Diagnostics • Extended Diagnostics • Application Relationships 3.5.3. Features enabled (View only) Read only. Lists those features that have been enabled. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 89...

  • Page 96: Allocation

    To select a particular event via the handheld programmer: a) Go to Enable (3.5.1.) and select Yes to enable Condensed Mode. b) Go to Event Index (3.6.1.) and enter the event index number corresponding to the event. Page 90 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 97 Go to Level Meter > Diagnostics > Condensed Status. c) Select the Status line for the selected Event, then choose a Status option from the associated pull-down menu. Condensed Status on page 150 for more detail. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 91...

  • Page 98: Peak Values

    The maximum recorded Sensor value, reported in units defined in Unit (2.3.1.). 3.7.3. Minimum Output Value - AIFB1 The minimum recorded Output Value from the Analog Input Function Block 1. Condensed Mode Diagnosis on page 154 for more detail. Page 92 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 99: Service

    If the address lock was on, will disable the lock. To access via SIMATIC PDM: Master Reset Open the menu Device – Master Reset. For more detail see on page 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 93...

  • Page 100: Remaining Device Lifetime

    The maintenance warnings and alarms are communicated via the Status byte. This information can be integrated into any Asset Management system. For optimal use, we recommend that you use SIMATIC PCS7 Asset Management Software in conjunction with SIMATIC PDM. Page 94 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 101 Reminder 2 (Maintenance Demanded) Values Reminders 1 and 2 * OFF a) First set the values in Reminder 1 (Required) (4.2.5.)/Reminder 2 (Demanded) (4.2.6.). b) Select the desired Reminder Activation option. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 95...
  • Page 102 In the Device Lifetime section, click on Acknowledge Warnings. To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode. b) Press RIGHT arrow to acknowledge the reminder. Page 96 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 103: Remaining Sensor Lifetime

    Read to view the effect of the change. • Click on Snooze to add a year to the Total Expected Sensor Life. • Click on Sensor Replaced to restart the timer and clear any fault messages. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 97...
  • Page 104 Reminder 2 (Maintenance Demanded) Options Reminders 1 and 2 * OFF a) First set the values in Reminder 1 (Required) (4.3.5.)/Reminder 2 (Demanded) (4.3.6.). b) Select the desired Reminder Activation option. Page 98 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 105 In the Sensor Lifetime section click on Acknowledge Warnings. To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode. b) Press RIGHT arrow to acknowledge the reminder 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 99...

  • Page 106: Service Schedule

    After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change. • Click on Service Performed to restart the timer and clear any fault messages. Page 100 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 107 ON - Reminders 1 and 2 checked ON - Reminder 2 (Maintenance Demanded) checked a) First set the values in Reminder 1 (Required) (4.4.5.)/Reminder 2 (Demanded) (4.4.6.). b) Select the desired Reminder Activation option. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 101...
  • Page 108 In the Service Schedule Status section click on Acknowledge Warnings. To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode. b) Press RIGHT arrow to acknowledge the reminder. Page 102 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 109: Calibration Schedule

    After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change. • Click on Calibration Performed to restart the timer and clear any fault messages. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 103...
  • Page 110 ON - Reminders 1 and 2 checked ON - Reminder 2 (Maintenance Demanded) checked a) First set the values in Reminder 1 (Required) (4.5.5.)/Reminder 2 (Demanded) (4.5.6.). b) Select the desired Reminder Activation option. Page 104 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 111 Warnings. To acknowledge a reminder via the handheld programmer: a) Press RIGHT arrow twice to open parameter view and activate Edit Mode. b) Press RIGHT arrow to acknowledge the reminder. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 105...

  • Page 112: Manufacture Date

    4.6. Manufacture Date The date of manufacture of the SITRANS LR250 (yy mm dd). 4.7. Powered Hours Displays the number of hours the unit has been powered up since manufacture. To view via SIMATIC PDM, open the menu Device – Wear.

  • Page 113: Profibus Ident Number

    Note: Do not lose this number value. Prevents any changes to parameters via PDM or the hand-held programmer. Range: 0 to 99999 Hand-held 2457 (unlock value) Off (enables programming) programmer Values any other value (disables programming) 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 107...

  • Page 114: Language

    In SIMATIC PDM, open the menu Device – Write Locking, select On or Off, and click on Transfer. 7. Language Selects the language to be used on the LCD. ENGLISH DEUTSCH Options FRANÇAIS ESPAÑOL Page 108 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 115: Appendix A: Alphabetical Parameter List

    Event Index (3.6.1.) Event Status (3.6.2.) Event Diagnosis (3.6.3.) Fail-safe Mode (2.6.9.) Far Range (2.5.2.) Fault Reset (3.3.) Fill Rate (2.3.8.2.) Filter Time Constant (2.6.8.1.) Firmware Revision (2.2.2.) Hardware Revision (2.2. 1 .) 7ML19985JF04 SITRANS LR250(PROFIBUS PA) – OPERATING INSTRUCTIONS Page 109...
  • Page 116 Message (2.1.3.) Min. Measured Value (3.7.1.) Minimum Output Value - AIFB1 (3.7.3.) Minimum Output Value - AIFB2 (3.7.5.) Minimum Sensor Value (2.5.4.) Minimum Value (3.4.1.) Mode (2.6.2.) Mode (2.6.9. 1 .) Page 110 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 117 Temperature Units (2.3.4.) TVT setup (2.5.10.) TVT shaper (2.5.11.) Unit (2.3. 1 .) Value (2.6.9.2.) Vessel Shape (2.4.1.1.) Volume (2.4.1.) Write Protection (6.2.1.) XY index (2.4.1.5.) X value (2.4.1.6.) Y value (2.4.1.7.) 7ML19985JF04 SITRANS LR250(PROFIBUS PA) – OPERATING INSTRUCTIONS Page 111...

  • Page 118: Appendix B: Troubleshooting

    • View the echo profile to see if the wrong echo is correspond to actual material Operation Troubleshooting level. being selected. If so, see on page 119 for possible causes and corrective action. Page 112 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 119: Device Status Icons

    • Check the network to ensure the PCL is communicat- ing with the LR250. If you continue to experience problems, go to our website at: www.siemens.com/LR250, and check the FAQs for SITRANS LR250, or contact your Siemens Milltronics representative. Device Status Icons...
  • Page 120 • Communication is good; device is in simulation mode or works with substitute values. • Out of operation • Communication is good; device is out of action. • No data exchange • Write access enabled • Write access disabled Page 114 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 121: General Fault Codes

    Reminder 2 (Demanded) (4.2.6.). S: 6 Sensor is nearing its lifetime limit Replacement is recommended. according to the value set in Reminder 1 (Required) (4.3.5.). 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 115...
  • Page 122 Input Scaling (2.6.5.) Upper and • Check configuration for AIFB1. S:14 lower values for AIFB1 are the • Ensure that Upper Value and same. Lower Value (Input Scaling) are not the same. Page 116 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 123 If it is correct, the device needs to be re-parameterized by the PLC. S: 33 Factory calibration for the internal Repair required: contact your local temperature sensor has been lost. Siemens representative. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 117...
  • Page 124 Siemens representative: measurement. repair required. S: 43 Factory calibration for the radar Repair required: contact your local receiver has been lost. Siemens representative. Page 118 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 125: Operation Troubleshooting

    • setting for Sensor Offset (1.6.) not correct • check Sensor Offset (2.3.7.3.) power error • check nameplate rating against volt- Screen blank age supply • check power wiring or source 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 119...
  • Page 126 LIQUID LOW DK • set Position Detect (2.5.7.2.) to Hybrid • check the setting for CLEF Range (2.5.7.4.): see the table below Propa- gation Factor (2.5.3.) for recom- mended settings Page 120 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 127: Appendix C: Maintenance

    If the antenna requires replacement due to damage or failure, it may be replaced without the need for re-calibration. • Changing to a different antenna type may be performed by a Siemens authorized repair center or personnel. • If the electronics or enclosure require replacement due to damage or failure, plesase ensure the correct antenna version is used, otherwise a re-calibration will need to be performed by Siemens authorized personnel.

  • Page 128: Appendix D: Technical Reference

    64 for a complete list of parameters. Principles of Operation SITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries . Radar level measurement uses the time of flight principle to determine distance to a material surface.

  • Page 129: Echo Selection

    (see Propagation Factor (2.5.3.) for values). There are three options: • Center • Hybrid • CLEF (Constrained Leading Edge Fit) 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 123...
  • Page 130 Example: CLEF enabled Vessel height: 1.5 m; CLEF range set to 0.5 m default TVT vessel bottom echo material echo selected echo marker Page 124 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 131 A new measurement outside the Echo Lock Window must meet the sampling criteria before the window will move to include it. The other available options, Maximum Verification and Total Lock are not recommended for radar. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 125...
  • Page 132 Example before Auto False Echo Suppression sensor reference point High Cal. Pt. obstruction at 1.3 m default material material level at false echo 3.2 m echo Page 126 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 133: Measurement Range

    Measurement Range Near Range (2.5.1.) Near Range programs SITRANS LR250 to ignore the zone in front of the antenna. The default blanking distance is 50 mm (1.97") from end of antenna. Near Range allows you to increase the blanking value from its factory default. But Auto False Echo Suppression (2.5.10.1.) is generally recommended in preference to extending...

  • Page 134: Damping

    LOE Timer (2.3.6.) determines the length of time a Loss of Echo (LOE) condition will persist before a Fail-safe state is activated. The default is 100 seconds. Fail-safe Mode determines the level to be reported when the Fail-safe timer expires. Page 128 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 135: Fail-Safe Behavior

    Navigate to the Level Meter > Setup > desired Analog Input (1 or 2). • Set Mode (2.6.9.1.) to Use substitute value. • Go to Value (2.6.9.2.) and enter the desired value. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 129...

  • Page 136: Maximum Process Temperature Chart

    • The chart below is for guidance only: • The chart does not represent every possible process connection arrangement. For example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic vessel surface. • The chart does not take into consideration heating from direct sunshine exposure.

  • Page 137: Process Pressure/Temperature Derating Curves

    . In the event the instrument package is replaced, the process connection tag shall be transferred to the replacement unit. • SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirements of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment Directive.

  • Page 138: Horn Antenna Or Wave Guide

    1.5" and 2" Threaded Versions OPERATING AREA process temperature (°C) 1.5”and 2" NPT / BSPT / G 2" Threaded PVDF Antenna Versions OPERATING AREA process temperature (°C) 2" NPT / BSPT / G Page 132 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 139: 80A And 100A Flanged Versions: Jis 10K

    JIS 10K DN50, DN80, DN100, and DN150 Flanged Versions: PN16 OPERATING AREA process temperature (°C) PN16 DN50, DN80, DN100, and DN150 Flanged Versions: PN40 OPERATING AREA process temperature (°C) PN40 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 133...

  • Page 140: 2", 3", And 4" Flanged Versions: 150 Lb

    2", 3", and 4" Flanged Versions: 300 lb OPERATING AREA process temperature (°C) 300 lb Customer to provide adequate bolting and flat faced gasket to retain vessel pressure and pro- vide sufficient sealing. Page 134 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 141: Appendix E: Application Examples

    High Calibration Pt.= 0.5 m (1.64 ft) from sensor reference point. Max.fill/empty rate = 0.2 m/min. (0.65 ft/min) In the event of a loss of echo: SITRANS LR250 is to report a user-defined value of Low Cal 0% Level Point 4.5 m (14.76 ft) after 2 minutes.

  • Page 142: Horizontal Vessel With Volume Measurement

    Select vessel shape, Parabolic Ends, and enter values for A and L, to obtain a volume reading instead of level. In the event of a loss of echo: SITRANS LR250 is to report a user-defined value of 4.5 m (14.76 ft) after 2 minutes.

  • Page 143: Application With Stillpipe

    • The stillpipe inside diameter is 50 mm I.D. 50 mm (1.96"). • The maximum rate of filling or emptying is about 0.1 m (4")/min. Low Cal. See table on next page. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 137...
  • Page 144 700 mm (2.29 ft) 700 mm (2.29 ft) 1000 mm (3.28 ft) 1000 mm (3.28 ft) (2.5.7.4.) settings Since pipe dimensions may vary slightly, the propagation factor may also vary. Page 138 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 145: Appendix F: Profibus Pa Profile Structure

    The Analog Input Function Block output supplies the measured value and associated status information to the PROFIBUS PA network via cyclic data transfer. Primary Value (PV), Secondary Value 1 (SV1), or Secondary Value 2 (SV2) 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 139...

  • Page 146: Description Of The Blocks

    The sensor value is stored in Sensor Value. The analog signal from the sensor is transformed into a digital representation. A Sensor Offset (default 0) compensates for changes to the sensor reference point, if necessary. Page 140 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 147 Sensor Offset (2.3.7.3.) is a constant offset that can be added to or subtracted from sensor reference point to compensate if the sensor has been changed. Level Offset (default O) can compensate for specific vessel configurations. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 141...
  • Page 148 Open the menu View – Device Diagnostics, select Device Status, and click on the tab Device Status to see peak temperature values. TB output value or Simulation Value Page 142 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 149 Bad, a Fail-safe condition occurs. The output is determined by the setting for Fail- safe Mode. Mode (2.6.2.) allows the entire AI block to be overridden by a Manual Output value. See Mode (2.6.2.) on page 83 for details. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 143...
  • Page 150 Output range, and a limit hysteresis can be used to adjust the sensitivity. See Alarms and Warnings (2.6.7.) on page 85 for details. The output value (OUT) is communicated via cyclic data transfer. Page 144 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 151: Appendix G: Communications Via Profibus Pa

    Appendix G: Communications via PROFIBUS PA SITRANS LR250 (PROFIBUS PA) is a Profile Version 3.01, Class B, PA device. It supports Class 1 Master for cyclic and acyclic data exchange, and Class 2 for acyclic services. The full range of SITRANS LR250 functions is available only over a PROFIBUS PA network.

  • Page 152: Bus Termination

    2.092), available from www.profibus.com. Power Demands To determine how many devices can be connected to a bus line, calculate the combined maximum current consumption of all the connected devices: 15 mA for SITRANS LR250. Allow a current reserve for safety. PROFIBUS address A unique PROFIBUS address identifies each device on the network.

  • Page 153: Operating As A Profile Device

    41. Configuring PROFIBUS PA with an S7-300/ 400 PLC If SITRANS LR250 is not listed in the STEP 7 device catalog, you can download the DeviceInstall file from the Siemens Web site and run it from your computer. Go to www.siemens.com/lr250 and click Downloads.

  • Page 154: Cyclic Versus Acyclic Data

    Input information is always requested at every bus scan and is set up as cyclic data. Configuration information is only needed periodically and is set up as acyclic data. Cyclic Data When you configure SITRANS LR250 on the PROFIBUS PA bus, there are two slots available for modules. Note: Each of the slots has to have a module defined in it.

  • Page 155: Status Byte

    This could happen when a firmware download has been done, but a system reset has not been done. This could also happen if the function blocks are not configured properly using the handheld programmer, PDM or acyclic services. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 149...

  • Page 156: Condensed Status

    Usability of the process value depends on the applica- tion. 0x68 UNCERTAIN – main- Value is potentially invalid. Cause can be determined by ...0x6B tenance demanded . Maintenance is reading the extended diagnostics demanded within a short-term period. Page 150 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 157 While this status is active there is no reliable process value. Measured values and their status are updated afterwards. Acyclic Extended Diagnostics (General Fault Codes) on page 155. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 151...

  • Page 158: Diagnostics

    The same information is also available acyclically via the Diagnosis Object. Cyclic Diagnosis (6 bytes) Extended Cyclic Diagnosis (8 bytes) Diagnosis Object (last 4 bytes) Extended Mode Condensed Mode Diagnosis Diagnosis Page 152 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 159: Diagnosis Object (Available Cyclically Or Acyclically)

    R indicates the message remains active as long as the reason for the message exists. A indicates the message will automatically reset after 10 seconds Values of the DIAGNOSIS bit: 0 = not set; 1 = set 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 153...

  • Page 160: Condensed Mode Diagnosis

    1: More diagnosis information is available in DIAGNOSIS_EXTENSION R indicates the message remains active as long as the reason for the message exists. A indicates the message will automatically reset after 10 seconds Page 154 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 161: Acyclic Extended Diagnostics (General Fault Codes)

    Replacement is recommended. limit according to the value set in Maintenance Demanded Limit. Sensor is nearing its lifetime Replacement is recommended. limit according to the value set in Maintenance Required Limit. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 155...
  • Page 162 • Check configuration for AIFB2. Upper and lower input values • Ensure that Upper Value and (Process Value Scale) for AIFB2 S:15 Lower Value (Process Value are the same. Scale) are not the same. Page 156 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 163 Cycle power. If fault persists, Measurement hardware contact your local Siemens S:37 problem. representative. Microwave module hardware Cycle power. If fault persists, failure: unable to calculate contact your local Siemens S:38 distance measurement. representative. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 157...

  • Page 164: Acyclic Data

    Siemens representative. Acyclic Data SITRANS LR250 supports up to four simultaneous connections by a Class 2 Master (C2 connection). It supports one connection by a Class 1 Master (C1 connection). In order for a Class 1 Master to read parameters from an instrument, it needs to know the slot and absolute index of the parameter.

  • Page 165: Appendix H: Firmware Revision History

    • Display contrast improvement. 1.02.01 1.02.00 7 June 2010 • Antenna type parameter cannot be modified. 1.02.02 1.02.00 24 May 2011 • Threaded PVDF antenna supported. Electronic Device Description 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 159...
  • Page 166 Notes Page 160 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 167: Glossary

    Many conductive liquids/electrolytes exhibit dielectric properties; the relative dielectric constant of water is 80. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 161...
  • Page 168 Page 162 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 169 TVT (time varying threshold): a time-varying curve that determines the threshold level above which echoes are determined to be valid. waveguide antenna: a hollow, metallic tube that transmits a microwave signal to the product target. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 163...
  • Page 170 Notes Page 164 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 171: Index

    Echo Profile, TVT Shaper, Auto False Condensed Status Echo Suppression 50 explanation 150 echo selection configuration Algorithm 123 network 145 CLEF (Constrained Leading Edge Fit) new device via PDM 41 PLC with PROFIBUS PA 25 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 165...
  • Page 172 34 see Diagnostics 87 measurement mode 31 Master Reset 93 navigation mode 33 factory defaults 93 reset PROFIBUS address (to 126) 93 standard defaults 93 Page 166 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 173 126 via PDM 58 via PDM 55 PROFIBUS Ident Number 107 SITRANS LR250 programmer operating principles 122 handheld 31 overview 5 programming LR250 startup enter program mode 33 transition screen 30 7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 167...
  • Page 174 PDM 51 via PDM 50 vessel shape selection 70 Wear powered hours, poweron resets 55 wiring hazardous areas 25 Write Locking via PDM 57 Write Protection 107 Page 168 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...

  • Page 175: Lcd Menu Structure

    LCD menu structure SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 169 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 176 2.6.8.4 DECIMAL POINT 2.4.1.3 DIMENS. A 2.6.9 FAIL-SAFE MODE 2.4.1.4 DIMENS. L 2.6.9.1 MODE 2.4.1.5 XY INDEX 2.6.9.2 VALUE 2.4.1.6 X VALUE 2.4.1.7 Y VALUE Page 170 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 177 3.6.4 MAX. OUTPUT FB1 3.6.5 MIN OUTPUT FB2 3.6.6 MAX. OUTPUT FB2 4. SERVICE 4.1 MASTER RESET 4.2 REMAIN. DEV. LIFE 4.2.1 LIFETIME EXPECT.. 4.2.2 TIME IN OPER. 4.2.3 REMAIN. LIFETIM.. 4.2.4 REMINDER ACTIV.. 7ML19985JF04 SITRANS LR250 (PROFIBUS PA)– OPERATING INSTRUCTIONS Page 171...
  • Page 178 4.10 LCD CONTRAST 5. COMMUNICATION 5.1 DEVICE ADDRESS 5.2 PROFIBUS IDENT 6. SECURITY 6.1 REMOTE ADDRESS 6.1.1 REMOTE LOCKOUT 6.2 LOCAL ACCESS 6.2.1 WRITE PROTECTION 6.2.2 LOCAL OPERATION 7. LANGUAGE Page 172 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS 7ML19985JF04...
  • Page 179 Siemens Milltronics Process Instruments Inc. Subject to change without prior notice Industry Automation (IA) 7ML19985JF04 Rev. 4.0 1954 Technology Drive P.O. Box 4225 *7ml19985JF04* © Siemens Milltronics Process Instruments Inc. 2011 Peterborough, ON Canada K9J 7B1 Printed in Canada email: techpubs.smpi@siemens.com www.siemens.com/processautomation...

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