Siemens SITRANS LR250 Operating Instructions Manual
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Siemens SITRANS LR250 Operating Instructions Manual

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Radar Transmitters
SITRANS LR250 (FOUNDATION FIELDBUS)
Operating Instructions 06/2010
SITRANS

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Summary of Contents for Siemens SITRANS LR250

  • Page 1 Radar Transmitters SITRANS LR250 (FOUNDATION FIELDBUS) Operating Instructions 06/2010 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 Inc. • Restrict repair to faulty components only.

  • Page 3: Table Of Contents

    Industry Canada ............................2 The Manual ...............................3 Application Examples ........................3 Technical Support ............................3 Abbreviations and Identifications .....................4 SITRANS LR250 Overview ....................6 Specifications ........................7 Threaded Horn Antenna with extension ................12 Flanged Horn ..........................13 Raised Face Flange per EN 1092-1 ..................14 Flat Faced Flange ........................16...
  • Page 4 Key Features of AMS Device Manager Rev. 9.0 ................41 Adding a new device ..........................42 Electronic Device Description (EDD) ..................42 Master Reset ..........................44 Scan Device ..........................44 Sensor calibration ........................44 Configuring a new device ........................44 Quick Start Wizard via AMS Device Manager ..............45 Changing parameter settings using AMS Device Manager ............49 Configure/Setup (Level Transducer Block-LTB) ................49 Identification (LTB) ........................49...
  • Page 5 Identification........................97 Device ..........................97 Sensor ..........................97 Linearization ........................101 Signal Processing......................104 AIFB 1 ..........................113 AIFB 2 ..........................116 Measured Values ......................116 Diagnostics ..........................117 Echo Profile........................117 Fault Reset ........................117 Electronics Temperature .................... 118 Peak Values ........................
  • Page 6 Echo Processing ..........................145 Process Intelligence .........................145 Echo Selection ...........................146 Measurement Range ........................149 Measurement Response ........................150 Damping ..............................150 Loss of Echo (LOE) ..........................150 LOE Timer ............................151 Maximum Process Temperature Chart ..................151 Process Pressure/Temperature derating curves .................152 Pressure Equipment Directive, PED, 97/23/EC ................152 Horn Antenna or Wave Guide ....................153 Appendix E: Application Examples ................

  • 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

    On the other hand, level probing devices found to interfere with primary licensing operations will be required to be removed at the user’s expense. Page 2 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 9: The Manual

    ™ FOUNDATION Fieldbus is a trademark of Fieldbus Foundation. This manual will help you set up your SITRANS LR250 for optimum performance. The Foundation Fieldbus for Level Instruments manual (7ML19985MP01) provides details on FF communication. We always welcome suggestions and comments about manual content, design, and accessibility.

  • Page 10: Abbreviations And Identifications

    For on-line technical support go to: www.siemens.com/automation/support-request • Enter the device name (SITRANS LR250) or order number, then click on Search, and select the appropriate product type. Click on Next. • You will be prompted to enter a keyword describing your issue. Then either browse the relevant documentation, or click on Next to E-mail a detailed description of your issue to Siemens Technical Support staff.
  • Page 11 Output voltage 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. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 5...

  • Page 12: Sitrans Lr250 Overview

    (H1) Link 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 handheld programmer, via the 375 Field Communicator, or from a remote location via FF host system, or AMS Device Manager.

  • 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: 9-32 V DC Non-Sparking/Energy Limited: Non-incendive: Bus powered 9-32 V DC, per IEC 61158-2 (Foundation Fieldbus)
  • Page 14 1.5" (40 mm), 2" (50 mm), 3" (80 mm), and 4" (100 mm) horn, optional 100 mm (4") horn extension Display quality will be degraded in temperatures below -20 °C (-4 °F) and above +65 °C (+149 °F). Page 8 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 15 −40 to +80 °C (−40 to +176 °F) • ambient temperature • relative humidity suitable for outdoor Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure (see note above) • installation category • pollution degree 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 9...
  • Page 16 151, Process Pressure/Temperature derating curves on page 152. Intrinsically Safe wiring on page 26 Non-Sparking-Energy Limited wiring on page 28. Non-incendive wiring (only for USA/Canada) on page 28. Page 10 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 17 The first six numbers show the production date (mmddyy), for example, device with serial number 032608101V was produced on March 26, 2008. Siemens Milltronics Infrared IS (Intrinsically Safe) Hand Programmer for hazardous and all other locations (battery is non-replaceable) •...

  • Page 18: Threaded Horn Antenna With Extension

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

  • Page 19: Flanged Horn

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

  • Page 20: Raised Face Flange Per En 1092-1

    Raised Face Flange per EN 1092-1 bolt hole angle of adjacent bolt holes bolt hole circle waveguide mounting hole flange O.D. facing bolt hole circle dia. height = 3 mm thickness facing dia. process side Page 14 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 21 The flange markings are located around the outside edge of the flange. Serial number: a unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999. Flange series: the Siemens Milltronics drawing identification. Heat code: a flange material batch code identification.

  • Page 22: Flat Faced Flange

    EN PN16 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 Page 16 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 23 Serial number: a unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999. Flange series: the Siemens Milltronics drawing identification. Nominal size: the flange size followed by the hole pattern for a particular flange class. For example, –...

  • Page 24: Installation

    • Installation shall be performed only by qualified personnel and in accordance with local governing regulations. • SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise protection provided by the device may be impaired.

  • Page 25: 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 Guideline 1/8 and 1/20).

  • Page 26: Orientation In A Vessel With Obstructions

    Bypass vent is required at the upper end of the bypass Dielectric constant of material measured on page 7. To equalize pressure and keep the liquid level in the bypass constant with the liquid level in the vessel. Page 20 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML1998KL01...

  • Page 27: Installation Instructions

    A torque of 40 N m (30 ft.lbs) is recommended. Flanged Version Flanged Horn dimensions Raised Face Flange per EN 1092-1 on page 14, on page 14, Flat Faced Flange on page 16 for dimensions. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 21...

  • Page 28: Wiring

    Strip the cable jacket for approximately 70 mm (2.75") from the end of the Foundation Fieldbus cable, and thread the wires through the gland Connect the wires to the terminals as shown below (SITRANS LR250 is not polarity sensitive). 1) 2) 3) Ground the instrument according to local regulations May be shipped with device.

  • Page 29: Basic Configuration With Foundation Fieldbus (H1)

    LR250 FF LR250 FF configurator Configuration via software Linking Device FF (HSE) PC/laptop controller HSE/H1 Linking Device FF (H1) LR250 FF LR250 FF LR250 FF Basic Configuration cont’ d on next page. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 23...

  • Page 30: Wiring Setups For Hazardous Area Installations

    Gateway FF (HSE) PC/laptop controller EEx ia type HSE/H1 Non-hazardous Area FF (H1) Hazardous Area LR250 FF LR250 FF LR250 FF Configuration for hazardous areas cont’ d on next page. Page 24 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 31 LR250 FF LR250 FF LR250 FF Configuration via configurator PCI/PCMCIA Card software PCI/PCMCIA bus PC/laptop EEx ia type H1 Interface Non-hazardous Area FF (H1) Hazardous Area LR250 FF LR250 FF LR250 FF 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 25...
  • Page 32 The FM/CSA Intrinsically Safe connection drawing number A5E02358161 can be downloaded from the product page of our website at: www.siemens.com/LR250. Go to More Info > Installation Drawings > Level Measurement > SITRANS LR250. • For wiring requirements: follow local regulations.
  • Page 33 FISCO Concept Under the FISCO evaluation concept, SITRANS LR250 has the following characteristics: (input voltage) U = 17.5 V (input current) I = 380 mA (input power) P = 5.32 W (internal capacitance) Ci (internal inductance) Li Note: For complete details and instructions regarding the FISCO Concept The FM/CSA connection drawing number A5E02358161 can be downloaded from the product page of our website at: www.siemens.com/LR250.
  • Page 34 Made in Canada The ATEX certificate listed on the nameplate can be downloaded from the product page of our website at: www.siemens.com/LR250. Go to More Info > Installation Drawings > Level Measurement > SITRANS LR250. • 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. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 29...

  • Page 36: Quick Start

    Activating SITRANS LR250 Out of the box, SITRANS LR250 will not begin measurements, and all blocks will be Out of Service until the device has been configured via the local user interface (LUI), or a remote configuration tool.

  • Page 37: The Lcd Display

    The depth and relative position of the item band on the menu bar indicates the length of the menu list, and approximate position of the current item in the list. • A deeper band indicates fewer items. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 31...

  • Page 38: Handheld Programmer

    RIGHT arrow opens PROGRAM Opens the top level menu. mode. UP or DOWN arrow toggles between Identifies which AIFB is the source of the displayed value. AIFB 1 and AIFB 2. Page 32 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML1998KL01...

  • Page 39: 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 40 Edit mode. The current selection is highlighted. Scroll to a new selection. Press RIGHT arrow to accept it. The LCD returns to parameter view and displays the new selection. Page 34 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML1998KL01...
  • Page 41 - Captures the current path point editing [see Secondary Value (4.11.)] Plus or Numeric minus Changes the sign of the entered value. editing sign Numeric Numeral Enters the corresponding character. editing 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 35...

  • Page 42: Quick Start Wizard Via The Handheld Programmer

    Introduction to Quick Start Wizard showing purpose of wizard: to setup common applications easily. CANCEL, NEXT Options Language Selects the language to be used on the LCD and takes effect immediately. ENGLISH DEUTSCH FRANCAIS Options ESPANOL 简体中文 Page 36 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML1998KL01...
  • Page 43 To view a measurement reading over the network, one of the Analog Input Function Blocks (AIFB) will need to be setup and scheduled using a network configuration software tool. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 37...

  • Page 44: Auto False Echo Suppression

    Suppression to prevent false echo detection. See TVT (Auto False Echo Suppression) Setup (2.5.10.) for instructions. 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.

  • Page 45: Level Application Example

    Resets Fill Rate and Empty Rate to 0.1 m/minute. Units Low Calibration Point 15.5 Process empty level. High Calibration Point Process full level. Wizard Complete FINISH Save new settings and exit Wizard 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 39...

  • Page 46: Operating Via Ams Device Manager

    In general, process parameters are accessed through the Level Transducer Block, and device parameters are accessed through the Resource Block. Page 40 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 47: Key Features Of Ams Device Manager Rev. 9.0

    Changing parameter settings using for a chart, and AMS Device Manager on page 49 for more details. Key Features of AMS Device Manager Rev. 9.0 The graphic interface in SITRANS LR250 makes monitoring and adjustments easy. CONFIGURE/SETUP function group Block Feature Page Function...

  • Page 48: Adding A New Device

    Check the product page of our website at: www.siemens.com/LR250, under Downloads, for the latest version of EDD: SITRANS LR250 FF - Foundation Fieldbus - AMS V9.0. Check that you have the latest version of the EDD for AMS Device Manager that matches the firmware revision of your device (see Firmware Revision on page 66), and if necessary download it from the product page listed above.
  • Page 49 Double-click the device icon to open the startup screen. The startup screen shows device identification details, and a navigation window on the left-hand side of the screen. (The Block Status will show Out of Service at initial startup.) Next, complete a master reset. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 43...

  • Page 50: Master Reset

    The LR250 FF does not need to be calibrated, only configured using the Quick Start Wizard below. Configuring a new device Configure a new device using the Quick Start Wizard, found in the Resource Block of the function group Configure/Setup. Page 44 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 51: Quick Start Wizard Via Ams Device Manager

    Launch AMS Device Manager and double-click the device icon from the Device Connection View to open the startup screen. Navigate to Configure/Setup > Resource Block > Wizards > Quick Start, and click on Step 1 - Identification. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 45...
  • Page 52 (level or volume), Propagation Factor (if using a stillpipe application), and the Material Click on Apply to save settings then go to Step 3. Application with Stillpipe on For a Low Dialectric Liquid application in a stilling well, see example page 158 Page 46 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 53 Click on Step 4 - Ranges in the navigation window. On the tab Step 4 of 5 Ranges: set the parameters, and click on Apply to save settings. If necessary, click on the Breakpoints tab, set the parameters, and click on Apply to save settings. Go to Step 5. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 47...
  • Page 54 Step 5 – Summary Click on Step 5 - Summary in the navigation window. Check parameter settings. Return to individual steps if further changes are necessary. The Quick Start Wizard is now complete. Page 48 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 55: Changing Parameter Settings Using Ams Device Manager

    Read only. Identifies the type of transducer block. • Strategy Used to identify grouping of blocks. • Plant Unit The identification number of the plant unit. For example, can be used in the host for sorting alarms. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 49...

  • Page 56: Operation (Ltb)

    Communicator, simulation must also be set to Enabled on the device. See 4. 1 2. Simulate Enable on page 128. • Simulation • Simulation Value • RAMP start • RAMP end • RAMP No of steps Page 50 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 57: Setup (Ltb)

    If you select Ramp, enter the ramp start, end, number of steps, and steplength. Click Apply. After simulation is complete, set Simulation to OFF and click Apply. Setup (LTB) Sensor (LTB) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 51...
  • Page 58 100) 2.3.8.2. Fill Rate per Minute • Fill Rate per minute (see on page 101) 2.3.8.3. Empty Rate per Minute • Empty Rate per minute (see on page 101) Page 52 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 59: Linearization (Ltb)

    Vessel Shape above. Level and Volume Breakpoints (see XY Index (2.4.1.5.) on page 103) • Level 1 ..Level 32 • Volume 1 ... Volume 32 • Vessel Shape 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 53...
  • Page 60 Example: Level Breakpoint Break- Level Volume value number point value value 0.5 m 19.5 20 m 3000 19.5 8000 Values are for example purposes only. Note: Page 54 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 61: Signal Processing (Ltb)

    2.5.7.2. Position Detect • Position Detect (see on page 107) 2.5.7.3. Echo Threshold • Echo Threshold (see on page 107) 2.5.7.4. CLEF (Constrained Leading Edge Fit) Range • CLEF Range (see page 108) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 55...
  • Page 62 After determining values as described in steps a) and b) of False Echo Suppression on page 110, Open the menu Configure/Setup > LTB > Setup > Signal Processing > TVT and set Auto False Echo Suppression Range. Page 56 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 63 Open the menu Configure/Setup > LTB > Setup > Signal Processing > TVT and click on the TVT Setup tab Turn Shaper Mode to On to activate Breakpoints 1 to 40 on the TVT Shaper tab 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 57...
  • Page 64 2.8. Measured Values • Distance Measurement (see on page 116) 2.5.9. 1 . Confidence • Confidence (see on page 109) 2.5. 1 . Near Range • Near Range (see on page 105) Page 58 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 65: Maintenance & Diagnostics (Ltb)

    4.3.6. Reminder 2 (Demanded) • Reminder 2 before Lifetime (Demanded) [see on page 123] Open the window Remaining Sensor Lifetime After modifying values/units as required, click on Apply to accept the change. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 59...
  • Page 66 Activation of Reminders (see on page 124) 4.4.5. Reminder 1 (Required) • Reminder 1 before Service (Required) (see page 124) 4.4.6. Reminder 2 (Demanded) • Reminder 2 before Service (Demanded) (see on page 124) Page 60 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 67 • Electronics Temperature Displays the current internal temperature of the device 3.3.1. Minimum Value • Minimum Value (see on page 118) 3.3.2. Maximum Value • Maximum Value (see on page 118) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 61...

  • Page 68: Communication (Ltb)

    Communication (LTB) Navigate to Configure/Setup > LTB > Communication for access to: Communication: 2.6.1. Static Revision Number • Static Revision No. (see on page 113) Page 62 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 69: Configure/Setup (Liquid Crystal Display Block-Lcd)

    Click on Block Modes to open the dialog window for access to: Block Modes: • Actual Mode • Target Mode • Permitted Mode • Normal Mode Block Modes: on page 50 Note: For descriptions of Block Modes see 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 63...

  • Page 70: Setup (Lcd)

    30 seconds, the parameter is made visible again locally. Communication (LCD) Navigate to Configure/Setup > LCD > Communication for access to: Communication: 2.6.1. Static Revision Number • Static Revision No. (see on page 113) Page 64 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 71: Configure/Setup (Diagnostic Transducer Block-Diag)

    Block Modes: on page 50 Note: For descriptions of Block Modes see Communication (DIAG) Navigate to Configure/Setup > DIAG > Communication. Communication: 2.6.1. Static Revision Number • Static Revision No. (see on page 113) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 65...

  • Page 72: Configure/Setup (Resource Block - Resource)

    97) 2.2.3. Loader Revision • Loader Revision (see on page 97) • EDD Version The version of the EDD currently installed. Manufacture Date on page 127 • Date of Manufacturing (see Page 66 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 73: Wizards (Resource)

    • If the RESOURCE block is set to Out of Service, the LTB, and AIFB blocks are forced to Out of Service also, but the LCD and DIAG blocks remain in Automatic mode. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 67...
  • Page 74 General: • Master Reset 4.1. Master Reset (see on page 119) Ensure the Block Status is Out of Service. Click the Master Reset button, then click Next to perform a reset. Page 68 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 75: Maintenance & Diagnostics (Resource)

    4.2.6. Reminder 2 (Demanded) • Reminder 2 before Lifetime (Demanded) (see on page 121) Open the window Remaining Device Lifetime After modifying values/units as required, click on Apply to accept the change. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 69...
  • Page 76 126) 4.5.5. Reminder 1 (Required) • Reminder 1 before Calibration (Required) (see on page 126) 4.5.6. Reminder 2 • Reminder 2 before Calibration (Demanded) (see (Demanded) on page 126) Page 70 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 77 Click on Calibration Performed to reset Time Since Last Calibration to 0 hours Wear (read only) 4.7. Powered Hours • Powered Days (see on page 127) (read only) 4.8. Power-on Resets • Poweron Resets (see on page 127) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 71...

  • Page 78: Communication (Resource)

    Navigate to Configure/Setup > RESOURCE > Security to access: Local Access 6.2.1. Write Protection • Local Write Protected (see on page 129) 6.2.2. PIN to Unlock • PIN to Unlock (see on page 130) Page 72 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 79: Device Diagnostics (Level Transducer Block - Ltb)

    Memory Failure • Lost Static Data • Lost Non-Volatile Data • Readback Check • Device Fault State • Block Configuration • Link Configuration • Other Maintenance • Maintenance Required • Maintenance Demanded 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 73...
  • Page 80 From the Block Error tab, check the Maintenance window to display the level of maintenance alarm that is active. From the Block Alarm tab, check the Alarm State window to display the level of maintenance alarm that has been acknowledged. Page 74 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 81 AMS. The maintenance alarm will cause an FF block alert, and the block alert can only be acknowledged via a remote host such as NI-FBUS Configurator or AMS Device Manager (as in step c above). 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 75...

  • Page 82: Extended Diagnostics (Ltb)

    [Errors displayed are the same for each block (LTB, LCD, DIAG, RESOURCE). See Errors (LTB) on page 73 for full listing. See AMS Device Manager instruction manual to work with alarms and errors.] Page 76 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 83: Device Diagnostics (Resource Block - Resource)

    Subcode Value • Value Values available on Block Alarm tab are also available for Write Alarm with one exception: the Value parameter on the Write Alarm tab is a Discrete Value. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 77...

  • Page 84: Extended Diagnostics (Resource)

    • Device Lifetime Limit2 • Calibration Schedule Limit1 • Calibration Schedule Limit2 • Memory RAM • Memory EEPROM • Memory EEPROM Flags • Memory Flash • Corrupt Stack • High Stack Page 78 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 85: Process Variables (Level Transducer Block-Ltb)

    The primary variable and the channel 1 output from the transducer block. For level applications, chart range is affected by High and Low Level Point values set in Configure/Setup > LTB > Setup > Sensor. For volume 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 79...

  • Page 86: Password Protection

    A standard user can change their password in AMS Device Manager. A Local or Domain Windows user cannot change their password using AMS Device Manager and must request their network administrator to do so. Page 80 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 87: User Manager Utility

    The Add User Wizard dialog allows you to: • select a user type, Standard User (AMS Device Manager) or Window User • enter the username and password, and set permissions • edit existing users. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 81...

  • Page 88: Ams Menu Structure

    Out of Service Simulation Simulation(Input) (tab) Sensor Value Simulation Simulation Simulation Value RAMP start RAMP end RAMP No of steps RAMP steplength ETUP Sensor Sensor (tab) General Unit Level Unit Temperature Unit Page 82 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 89 Level 32 Volume 1 Volume 2 Volume 32 Vessel Shape Signal Processing General General (tab) Range Near Range Far Range Propagation Factor Minimum Sensor Value Maximum Sensor Value Echo Select Algorithm 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 83...
  • Page 90 Lifetime (expected) Time in Operation Remaining Lifetime Activation of Reminders Reminder 1 before Lifetime (Required) Reminder 2 before Lifetime (Demanded) Service Schedule Service Schedule (tab) Service Interval Time Since Last Service Page 84 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 91 Target Mode Automatic Out of Service Permitted Mode Automatic Out of Service Normal Mode Automatic Out of Service ETUP Local Display Local Display (tab) Language LCD Fast Mode LCD Contrast Local Operation 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 85...
  • Page 92 Out of Service Permitted Mode Automatic Out of Service Normal Mode Automatic Out of Service OMMUNICATION Communication Communication (tab) Static Revision No. RESOURCE BLOCK DENTIFICATION Identification Identification (tab) Identification Descriptor Message Date Strategy Page 86 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 93 High Calibration Point (Y) Response Rate Maximum Volume Vessel Dimension A Vessel Dimension L Breakpoints (tab) Levels and Volume Units Level Unit PV (Volume/Level) Unit Levels and Volume Breakpoints Level 1 Level 2 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 87...
  • Page 94 Vessel Dimension L PERATION Block Modes Block Modes (tab) Actual Mode Automatic Out of Service Target Mode Automatic Out of Service Permitted Mode Automatic Out of Service Normal Mode Automatic Out of Service Page 88 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 95 Powered Days Poweron Resets OMMUNICATION Communication Communication (tab) Manufacturer Product Name Device Revision DD Revision ITK Version Static Revision No. ECURITY Security Security (tab) Local Access Local Write Protected PIN to Unlock 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 89...
  • Page 96 Block Alarm (tab) Unacknowledged Unacknowledged Alarm State Alarm State Time Stamp Time Stamp Subcode Subcode Value Value XTENDED IAGNOSTICS Extended Diagnostics Extended Diagnostics (tab) Detailed Error Info Loss of Echo No Tech Power Page 90 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 97 Output Failure Memory Failure Lost Static Data Lost Non-Volatile Data Readback Check Device Fault State Block Configuration Link Configuration Other Maintenance Maintenance Required Maintenance Demanded Information Simulation Active Local Override Power Up 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 91...
  • Page 98 Block Configuration Link Configuration Other Maintenance Maintenance Required Maintenance Demanded Information Simulation Active Local Override Power Up Out Of Service XD Error Transducer Error Block Alarm Block Alarm (tab) Unacknowledged Unacknowledged Page 92 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 99 Maintenance Demanded Information Simulation Active Local Override Power Up Out Of Service Block Alarm Block Alarm (tab) Unacknowledged Unacknowledged Alarm State Alarm State Time Stamp Time Stamp Subcode Subcode Value Value 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 93...
  • Page 100 Calibration Schedule Limit1 Calibration Schedule Limit2 Memory RAM Memory EEPROM Memory EEPROM Flags Memory Flash Corrupt Stack High Stack Data Safe Read Data Safe Write Board Voltage ADC Failed Seq. Corrupt Seq. CP Page 94 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 101 ARIABLES Process Variables Values (tab) Primary Variable Level/Volume (PV) Trend View (tab) Trend Values Level/Volume (PV) Echo Profile Echo Profile (tab) Echo Profile Parameters Level Measurement Distance Measurement Confidence Near Range 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 95...

  • Page 102: Parameter Reference (Lui)

    Service mode before any configuration changes (changes to parameters affecting block output) can be written. The blocks do not need to be set to Out of Service when the Quick Start Wizard is initiated via the handheld programmer. Page 96 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 103: Quick Start

    Read only. Corresponds to the software or firmware that is embedded in the Field Device. 2.2.3. Loader Revision Read only. Corresponds to the software used to update the Field Device. 2.3. Sensor 2.3.1. Unit Sensor measurement unit. m, cm, mm, ft, in Values 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 97...
  • Page 104 PV (Primary Value): the output from the Level Transducer Block. See Level Transducer Foundation Fieldbus for Level Instru- Block (LTB) and How the LTB works: in manual ments (7ML19985MP01) for more details. Page 98 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 105 The point from which level measurement is referenced (see Flat Faced Flange on page 16 and Threaded Horn Antenna with extension on page 12). See Low Calibration Point (2.3.7.1.) for an illustration. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 99...
  • Page 106 Empty Rate per Minute (2.3.8.3.) Slow 0.1 m/min (0.32 ft/min) Medium 1.0 m/min (3.28 ft/min) Fast 10.0 m/min (32.8 ft/min) Use a setting just faster than the maximum filling or emptying rate (whichever is faster). Page 100 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 107: Linearization

    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 108 L maximum volume, LINEAR TABLE level breakpoints, Linearization table volume breakpoints (level/volume breakpoints) Linearization Table must be selected in order for level/volume values [see XY Index (2.4.1.5.)] to be transferred. Page 102 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 109 Range: 0.0000 to 999999 (m, cm, mm, ft, in, %) Level Values Default: 0.0 Range: 0.0000 to 999999 (% or volumetric units) Volume Values Default: 0.0 See Level Unit on page 98. See PV (volume/level) Units on page 98. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 103...

  • Page 110: Signal Processing

    After completing the above steps you will need to configure AIFB 1 and/or AIFB 2. (See AIFB 1 (2.6.) and AIFB 2 (2.7.) for details.) 2.5. Signal Processing In AMS Device Manager, see the General tab under Signal Processing (LTB) on page Page 104 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 111 Range: 0.3 to 1.5 depending on pipe size. Values Default: 1.000 See Flat Faced Flange on page 16 and Threaded Horn Antenna with extension on page 12. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 105...
  • Page 112 2.5.7.1. Algorithm Selects the algorithm to be applied to the echo profile to extract the true echo. True First echo Options First echo Largest echo Best of Largest and First echo Page 106 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 113 Range: 0 to 99 Values Default: 5 Related Loss of Echo (LOE) Timer (2.3.6.) Confidence (2.5.9.1.) Parameters Use this feature when an incorrect material level is reported. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 107...
  • Page 114 2.5.8. Sampling Provides a method of checking the reliability of a new echo before accepting it as the valid reading, based on numbers of samples above or below the currently selected echo. Page 108 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 115 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 148 for more details. Lock Off (no verification)
  • Page 116 Hover false echo Level echo marker 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. Page 110 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 117 Range: 0.00 to 30.00 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.) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 111...
  • Page 118 Default: 0 dB 2.5.11.2. Breakpoints 10-18 Range: –50 to +50 dB Values Default: 0 dB Before Auto False Echo Suppression For an illustration, see and After Auto False Echo Suppression on page 111. Page 112 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 119: Aifb 1

    Manual Mode (MAN) Options Out of Service (OOS) Allows you to put the SITRANS LR250 into Out of Service Mode and then reset it to Automatic Mode. Manual Mode can be used when simulating output. See Foundation Fieldbus for Level Instruments Simulation in manual (7ML19985MP01) for more details.
  • Page 120 (Out) to AIFB 1 or AIFB 2 Output Scale The point from which High and Low Calibration points are referenced: see Dimensions on page 11 and Threaded Horn Antenna with extension on page 12. Page 114 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 121 The setting for the upper alarm limit in AIFB 1 units. Range: -Infinity to Infinity Options Default: Inf 2.6.6.2. High Limit Warning The setting for the upper warning limit in AIFB 1 units. Range: -Infinity to Infinity Options Default: Inf 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 115...

  • Page 122: Aifb 2

    Read only. Allows you to view measured values for diagnostic purposes. 2.8.1. Main Output (PV– Primary Value) The value for level, or volume (if volume conversion is selected). In AMS Device Manager, see Process Variables (Level Transducer Block-LTB) on page 79. Page 116 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 123: Diagnostics

    375 Field Communicator. Fault Code Description Device Lifetime Reminder 1 (Maintenance Required) Device Lifetime Reminder 2 (Maintenance Demanded) Sensor Lifetime Reminder 1 (Maintenance Required) Sensor Lifetime Reminder 2 (Maintenance Demanded) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 117...

  • Page 124: Electronics Temperature

    3.4.1. Minimum Measured Value The minimum recorded Sensor value, reported in units defined in Unit (2.3.1.). 3.4.2. Maximum Measured Value The maximum recorded Sensor value, reported in units defined in Unit (2.3.1.). Page 118 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 125: Service

    After performing a master reset, the device will stop measuring, the Resource and Level Transducer Blocks will go to Out of Service, and the LUI will show the Quick Start Wizard until the device is configured. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 119...

  • Page 126: Remaining Device Lifetime

    REMinders 1 AND 2 (Maintenance Required and Maintenance Demanded) * OFF a) First set the reminder values in Reminder 1 (Required) (4.2.5.)/Reminder 2 (Demanded) (4.2.6.). b) Select the desired Reminder Activation option. Page 120 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 127: Remaining Sensor Lifetime

    • Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults. • The device operates in years. To view Remaining Sensor Lifetime parameters in hours (via AMS Device Manager only) see Remaining Sensor Lifetime on page 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 121...
  • Page 128 If Remaining Lifetime (4.3.3.) is equal to or less than this value, the device generates a Maintenance Required reminder. Range: 0 to 20 years Values Default: 0.164 years a) Modify limit values as required. b) Set Reminder Activation (4.3.4.) to the desired option. Page 122 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 129: Service Schedule

    This information can be integrated into any Asset Management system. To access these parameters via AMS Device Manager see Service Schedule under Maintenance & Diagnostics (LTB) on page 59. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 123...
  • Page 130 If Time Next Serviced (4.4.3.) is equal to or less than this value, the device generates a Maintenance Demanded reminder. Range: 0 to 20 years Values Default: 0.019 years a) Modify limit values as required. b) Set Reminder Activation (4.4.4.) to the desired option. Page 124 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 131: Calibration Schedule

    Time elapsed since last calibration. Can be reset to zero after performing a calibration. To reset to zero: • Via the handheld programmer, manually reset Time Last Calibrated (4.5.2.) to zero. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 125...
  • Page 132 To display the level of maintenance reminder that is active in AMS Device Manager see Extended Diagnostics under Device Diagnostics (Resource Block - RESOURCE) on page 77. 4.5.8. Acknowledge Status Indicates which level of maintenance reminder has been acknowledged. Page 126 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 133: Manufacture Date

    Mode. b) Press RIGHT arrow to acknowledge the alert. 4.6. Manufacture Date The date of manufacture of the SITRANS LR250 (mm/dd/yyyyhh.mm). 4.7. Powered Hours Displays the number of hours the unit has been powered up since manufacture. Maintenance & Diagnostics...

  • Page 134: Secondary Value

    Temporary range during initial commissioning: 248 - 251. Permanent range after commissioning complete (written to non-volatile Values memory in the device): 16-247 5.3. Manufacturer Name of manufacturer associated with this device. Page 128 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 135: Device Type Identification

    5.4. Device Type Identification Hexadecimal integer defined by Siemens to uniquely identify each product with manufacturer’s Id. (LR250 FF device=0x1954.) 5.5. Device Revision Manufacturer’s revision number associated with this device. 5.6. ITK Version Major revision number of the interoperability test case used to register this device.

  • Page 136: Language

    Selects the language to be used on the LCD. ENGLISH DEUTSCH FRANCAIS Options ESPANOL 简体中文 To access this parameter via AMS Device Manager see Local Display under Setup (LCD) on page 64. Page 130 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 137: Appendix A: Alphabetical Parameter List

    Communication (5.) Confidence (2.5.9.1.) Decimal Point (2.6.4.4.) Decimal Point (2.6.5.4.) Descriptor (2.1.2.) Device (2.2.) Device Address (5.2.) Device Revision (5.5.) Device Type Identification (5.4.) Diagnostics (3.) Dimension A (2.4.1.3.) Dimension L (2.4.1.4.) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 131...
  • Page 138 Local Access (6.2.) Local Operation (6.2.3.) Loss of Echo (LOE) Timer (2.3.6.) Low Calibration Point (2.3.7. 1 .) Low Level Point (2.3.7.4.) Low Limit Alarm (2.6.6.4.) Low Limit Warning (2.6.6.3.) Lower Value (2.6.4.1.) Page 132 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 139 Rate (2.3.8.) Remaining Device Lifetime (4.2.) Remaining Lifetime (4.2.3.) Remaining Sensor Lifetime (4.3.) Remaining Lifetime (4.3.3.) Reminder 1 (Required) (4.2.5.) Reminder 1 (Required) (4.3.5.) Reminder 1 (Required) (4.4.5.) Reminder 1 (Required) (4.5.5.) 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 133...
  • Page 140 Unit (2.3. 1 .) Unit (2.6.4.3.) Unit (2.6.5.3.) Up Sampling (2.5.8.2.) Upper Value (2.6.4.2.) Upper Value (2.6.5.2.) Vessel Shape (2.4.1.1.) Volume (2.4.1.) Write Protection (6.2.1.) X Value (2.4.1.6.) XY Index (2.4.1.5.) Y Value (2.4.1.7.) Page 134 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 141: Appendix B: Troubleshooting

    • Ensure block is in Out of Service mode ters, such as low calibration point. 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. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS...

  • Page 142: Device Status Icons

    • Manual operation (local override) • Communication is good; device is in manual mode. • Simulation or substitute value • Communication is good; device is in simulation mode or works with substitute values. Page 136 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 143 Icon Meaning (cont’ d ) Level • Out of operation • Communication is good; device is out of action. • No data exchange • Write access enabled • Write access disabled 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 137...

  • Page 144: General Fault Codes

    • Ensure settings for High Calibration (2.3.7.1.) and High Calibration Point (2.3.7.2.) Point and Low Calibration Point are are the same. different. S: 11 Internal temperature sensor failure. Repair required: contact your local Sie- mens representative. Page 138 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 145 Cycle power. If fault persists, contact your local Siemens representative. S: 38 Microwave module hardware failure: Cycle power. If fault persists, contact unable to calculate distance measure- your local Siemens representative: ment. Repair required. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 139...
  • Page 146 S: 103 Meas. Corrupt Contact your local Siemens representa- tive and provide configuration file and FB schedule. S: 104 DMA Error Hardware problem. If fault persists con- tact your local Siemens representative. Page 140 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 147 Verify TB not in simulation mode. If fault persists contact your local Siemens rep- resentative. S: 118 SV Low Verify TB not in simulation mode. If fault persists contact your local Siemens rep- resentative. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 141...

  • Page 148: Operation Troubleshooting

    Point (2.3.7.1.) • setting for Sensor Offset • check Sensor Offset (2.3.7.3.) (2.3.7.3.) not correct Power error • check nameplate rating against Screen blank voltage supply • check power wiring or source Page 142 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 149 LIQUID LOW DK • set Position Detect (2.5.7.2.) to Hybrid • check the setting for CLEF (Constrained Leading Edge Fit) Range (2.5.7.4.): see the table below Propagation Factor (2.5.3.) for recommended settings 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 143...

  • Page 150: Appendix C: Maintenance

    If the antenna requires replacement due to damage, it may be replaced without need for re-calibration. • Changing to a different antenna type may be performed by a Siemens authorized repair center. Page 144 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS...

  • Page 151: Appendix D: Technical Reference

    Reference (LUI) on page 96 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 152: Echo Selection

    Uses center of the echo. Hybrid Uses the Center algorithm for the top part of the vessel, and the CLEF algorithm for the part nearest the vessel bottom, according to the setting for CLEF range. Page 146 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 153 CLEF (Constrained Leading Edge Fit) Range (2.5.7.4.) Determines the level below which the CLEF algorithm will be used. Above this level the Center algorithm is used. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 147...
  • Page 154 Default TVT is applied over the remainder of the range. The learned TVT screens out the false echoes caused by obstructions. The default TVT allows the material echo to rise above it. Page 148 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 155: 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 horn antenna. Near Range allows you to increase the blanking value from its factory default. But Auto False Echo Suppression (2.5.

  • Page 156: Measurement Response

    If the LOE condition persists beyond the time limit set in Loss of Echo (LOE) Timer (2.3.6.) the LCD displays the Service Required icon, and the text region displays the fault code S: 0 and the text LOE. Page 150 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 157: Loe Timer

    • 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 158: Process Pressure/Temperature Derating Curves

    In the event the instrument package is replaced, the Process Device 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 159: Horn Antenna Or Wave Guide

    • 25546 or 25547 will be stamped on a flat faced flange. • 25580 or 25581 will be stamped on a raised face process temperature (°C) JIS 10K flange. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 153...
  • Page 160 • 25547 will be stamped on a flat faced flange. • 25581, 25656 or 25657 will be stamped on a raised face flange. process temperature (°C) PN40 Page 154 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 161 • 25546 will be stamped on a flat faced flange. • 25580 will be stamped on a raised face flange. process temperature (°C) 300 lb 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 155...

  • Page 162: Appendix E: Application Examples

    Max.fill/empty rate = 0.2 m/min. (0.65 ft/min) In the event of a loss of echo: Low Cal 0% Level SITRANS LR250 is to report a status of BAD or Point UNCERTAIN after 120 seconds (2 minutes). Parameter Options/...

  • Page 163: 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 status of BAD or UNCERTAIN after 120 seconds (2 minutes).

  • Page 164: Application With Stillpipe

    5.5 m (18.04 ft) Edge Fit) Range (2.5.7.4.) The recommended values for the propagation factor and for CLEF range are dependent on the stillpipe diameter. Refer to the next table for values. Page 158 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 165 1000 mm minus 1000 mm Edge Fit) Range (2.5.7.4.) (2.29 ft) (2.29 ft) (3.28 ft) (3.28 ft) settings Since pipe dimensions may vary slightly, the propagation factor may also vary. 7ML19985JKL1 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 159...

  • Page 166: Appendix F: Communications Via Foundation Fieldbus (Ff)

    Appendix F: Communications via Foundation Fieldbus (FF) SITRANS LR250 (Foundation Fieldbus) is an FF (H1) device of Class 31PS, and 32L. It supports publish and subscribe functionality as well as Backup LAS functionality. The full range of SITRANS LR250 functions is available only over an FF network.

  • Page 167: Appendix G: Firmware Revision History

    Appendix G: Firmware Revision History Firmware DD Rev. Date Changes Rev. 1.01.00-00 1.01.00-00 February 25, 2010 • Initial release. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 161...

  • Page 168: Index

    119 Filter Time Constant standard defaults 119 explanation 150 device status flat faced flange 16 icons 136 flat faced flange markings 17 diagnostics function keys maintenance settings 117 edit mode 35 Page 162 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 169 117 repair Master Reset cautions 144 factory defaults via AMS 44 excluded liability 144 factory defaults via LUI 119 resets mounting Device Reset 44 handheld programmer access 20 Response Rate 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 163...
  • Page 170 114 troubleshooting operation 142 TVT (time varying threshold) explanation 146 TVT Shaper manual adjustment via AMS 57 vessel shape selection 102 Wear Powered Hours, Power-on Resets 127 wiring basic 22 Page 164 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...

  • Page 171: Glossary

    The value is usually given relative to a vacuum /dry air: the dielectric constant of air is 1 1) Many conductive liquids/electrolytes exhibit dielectric properties; the relative dielectric constant of water is 80. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 165...
  • Page 172 Distance is determined by the return transit time. Page 166 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 173 TVT (time varying threshold): a time-varying curve that determines the threshold level above which echoes are determined to be valid. 7ML19985KL01 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS Page 167...
  • Page 174 Page 168 SITRANS LR250 (FF) – OPERATING INSTRUCTIONS 7ML19985KL01...
  • Page 180 Siemens Milltronics Process Instruments Inc. Subject to change without prior notice Industry Automation (IA) 7ML19985KL01 Rev. 1.0 1954 Technology Drive P.O. Box 4225 *7ml19985KL01* © Siemens Milltronics Process Instruments Inc. 2010 Peterborough, ON Canada K9J 7B1 Printed in Canada email: techpubs.smpi@siemens.com www.siemens.com/processautomation...

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