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Siemens SITRANS LR250 Compact Operating Instructions
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Siemens SITRANS LR250 Compact Operating Instructions

Radar level transmitters
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SITRANS LR250 with FOUNDATION FIELDBUS
SITRANS
Radar level transmitters
SITRANS LR250 with FOUNDATION
FIELDBUS
Compact Operating Instructions
7ML5431 (LR250)
7ML5432 (LR250 flanged encapsulated antenna)
7ML5433 (LR250 hygienic encapsulated antenna)
09/2021
A5E48453221-AB
Introduction
Safety information
Description
Installing/mounting
Connecting
Commissioning
Remote operation
Service and maintenance
Technical specifications
Product documentation and
support
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Summary of Contents for Siemens SITRANS LR250

  • Page 1 SITRANS LR250 with FOUNDATION FIELDBUS Introduction Safety information SITRANS Description Installing/mounting Radar level transmitters SITRANS LR250 with FOUNDATION FIELDBUS Connecting Commissioning Compact Operating Instructions Remote operation Service and maintenance Technical specifications Product documentation and support 7ML5431 (LR250) 7ML5432 (LR250 flanged encapsulated antenna)
  • Page 2 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 3: Table Of Contents

    Improper device modifications ................... 13 Requirements for special applications ................. 14 Use in hazardous areas ...................... 14 Description ............................15 SITRANS LR250 overview ....................15 Installing/mounting ..........................16 Basic safety information ..................... 16 4.1.1 Unsuitable cables, cable glands and/or plugs ..............17 4.1.2...
  • Page 4 4.4.3 Hygienic versions ....................... 27 Disassembly ........................28 Connecting ............................29 Basic safety information ..................... 29 Connecting SITRANS LR250 ....................30 Wiring setups for hazardous area installations ..............34 5.3.1 Configuration with Foundation Fieldbus for hazardous areas ..........35 5.3.2 Intrinsically safe wiring ......................

  • Page 5: Introduction

    Introduction LR250 FF manual usage Note This manual applies to the SITRANS LR250 (FOUNDATION™ Fieldbus) only. FOUNDATION™ Fieldbus is a trademark of Fieldbus Foundation. Technical publications Follow these operating instructions for quick, trouble-free installation, and maximum accuracy and reliability of your device.

  • Page 6: Industrial Use Note

    4. Check the scope of delivery by comparing your order to the shipping documents for correctness and completeness. WARNING Using a damaged or incomplete device Risk of explosion in hazardous areas. • Do not use damaged or incomplete devices. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 7: Security Information

    Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to...

  • Page 8: Notes On Warranty

    The sales contract contains all obligations on the part of Siemens as well as the complete and solely applicable warranty conditions. Any statements regarding device versions described in the manual do not create new warranties or modify the existing warranty.

  • Page 9: Safety Information

    • National Electrical Code (NEC - NFPA 70) (USA) • Canadian Electrical Code (CEC Part I) (Canada) Further provisions for hazardous area applications are for example: • IEC 60079-14 (International) • EN 60079-14 (EU and UK) SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 10: Fcc Conformity

    However, devices found to interfere with primary licensing operations will be required to be removed at the user's expense. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 11: Industry Canada Conformity Note

    Directive 1999/5/EC The applicable directives can be found in the EC conformity declaration of the specific device. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 12: Conformity With Uk Regulations

    ETSI TS 103 361 [6]: • Performance criterion: measurement value variation Δd over time during a distance measurement • Level of performance: Δd ≤ ±50 mm SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 13: Ce And Ukca Electromagnetic Compatibility (Emc) Conformity

    • Only carry out modifications that are described in the instructions for the device. Failure to observe this requirement cancels the manufacturer's warranty and the product approvals. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 14: Requirements For Special Applications

    If you need additional information not covered by these instructions, contact your local Siemens office or company representative. Note Operation under special ambient conditions...

  • Page 15: Description

    Loss of protection Danger to personnel, system and environment can result from improper use of the device. • SITRANS LR250 is to be used only in the manner outlined in this manual, otherwise protection provided by the device may be impaired.

  • Page 16: Installing/Mounting

    Note Material compatibility Siemens can provide you with support concerning selection of parts wetted by process media. However, you are responsible for the selection of parts. Siemens accepts no liability for faults or failures resulting from incompatible materials. WARNING Unsuitable connecting parts Risk of injury or poisoning.

  • Page 17: Unsuitable Cables, Cable Glands And/Or Plugs

    • In the case of a conduit system, mount a spark barrier at a defined distance from the device input. Observe national regulations and the requirements stated in the relevant approvals. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 18: Pressure Applications

    4.1.2.1 Pressure Equipment Directive, PED, 2014/68/EU 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 A-08 and A-20).

  • Page 19: Installation Location Requirements

    The device can overheat or materials become brittle due to UV exposure. • Protect the device from direct sunlight. • Make sure that the maximum permissible ambient temperature is not exceeded. Refer to the information in Technical specifications (Page 59). SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 20: Proper Mounting

    • When mounting, orient the front or back of the device towards the closest vessel wall or obstruction. • Do not rotate the enclosure after programming and vessel calibration, otherwise an error may occur, caused by a polarity shift of the transmit pulse. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 21: Nozzle Design

    • An antenna extension (100 mm/3.93") is available for the horn antenna only. • When installing the SITRANS LR250 with hygienic process connection, it is good hygienic practice to install the antenna in a nozzle that has a maximum length/diameter ratio of 1:1.

  • Page 22: Nozzle Location

    • The peak energy density is directly in front of and in line with the antenna. • There is a signal transmitted outside the beam angle, therefore false targets may be detected. ① Emission cone ② Beam angle SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 23 Access for programming • Provide easy access for viewing the display and programming via the handheld programmer. Mounting on a Stillpipe or Bypass Pipe See full operating instructions for further details. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 24: Installation Instructions

    The outer part of the lens on the PTFE flanged encapsulated antenna version may not appear to lie flush before installation and this is normal. This will flatten after installation and will not impact the performance of the device. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 25: Threaded Versions

    Special Instructions for PTFE flanged encapsulated antenna only Note • Use spring washers • Lens assembly acts as integral gasket, no other required • Use recommended torque values for tightening bolts SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 26 2. Check uniformity of the flange gap. 3. Apply adjustments by selective tightening if required. 4. Torque incrementally until desired value is reached. 5. Check/re-torque after 4 to 6 hours. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 27: Hygienic Versions

    • For Hygienic encapsulated antenna, the lens acts as a gasket/seal and should be used in conjunction with a cleanable seal as required by the specific process connections (for example, DIN 11864-3). SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 28: Disassembly

    • If the device contains hazardous media, it must be emptied prior to disassembly. Make sure that no environmentally hazardous media are released. • Secure the remaining connections so that no damage can result if the process is started unintentionally. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 29: Connecting

    PE/ground conductor connection of the socket and power plug match each other. • Connecting terminals: Connect the terminals according to the terminal connection diagram. First connect the PE/ground conductor. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 30: Connecting Sitrans Lr250

    • See Wiring setups for hazardous area installations (Page 34). NOTICE Improper cables and conduit • Separate cables and conduits may be required to conform to standard instrumentation wiring practices or electrical codes. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 31 May be shipped with the device. If cable is routed through conduit, use only approved suitable-size hubs for waterproof ap- plications. Not applicable to 3-A Sanitary approved device. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 32 3. Strip/remove conductor jacket to 8 mm from end. 4. Connect the wires to the terminals as shown: SITRANS LR250 (FF) is not polarity sensitive. 5. Terminal block suggested screw torque: 7.0 lb-inch. 6. Ground the device according to local regulations.
  • Page 33 Configurator software ⑦ LR250 FF ④ PC/laptop Configuration via Linking Device ① Controller ⑤ HSE/H1 Linking Device ② FF (HSE) ⑥ FF (H1) ③ Configurator software ⑦ LR250 FF ④ PC/laptop SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 34: Wiring Setups For Hazardous Area Installations

    In all cases, check the device nameplate, full operating instructions, and process connection tag to confirm the approval rating, and perform installation and wiring according to your local safety codes. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 35: Configuration With Foundation Fieldbus For Hazardous Areas

    LR250 FF ④ PC/laptop Configuration via Linking Device ① Controller ⑤ Ex ia type HSE/H1 Linking Device ② FF (HSE) ⑥ FF (H1) ③ Configurator software ⑦ LR250 (FF) ④ PC/laptop SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 36: Intrinsically Safe Wiring

    The IECEx certificate listed on the nameplate can be viewed on the IECEx website. Go to: IECEx (http://iecex.iec.ch/) Click on Certified Equipment and enter the certificate number IECEx SIR 09.0148X. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 37: Non-Sparking Wiring

    5.3 Wiring setups for hazardous area installations 5.3.3 Non-sparking wiring The ATEX and UKEX certificates listed on the nameplate can be downloaded from our website: Product page (http://www.siemens.com/LR250) Go to: Support > Approvals/Certificates. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 38: 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. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 39 In the event of rare incidents, ignition sources due to impact and friction sparks could occur. This shall be considered when the SITRANS LR250 FF is being installed in locations that specifically require Equipment Protection level Ga or Da.

  • Page 40: Commissioning

    Ensure device is properly closed before returning to operation. Programming 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 41: The Lcd Display

    In response to a key press request. For details, see Handheld programmer (Part No. 7ML1930-1BK) (Page 43) for key functions in Measurement mode. Fault present ① service required icon appears ② Device status indicator, see Device status icons (Page 42) SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 42: Device Status Icons

    For a complete list of the device status icons that appear on the LCD display, as well as what they mean, please refer to the Diagnosing and Troubleshooting section of the full operating instructions. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 43: Handheld Programmer (Part No. 7Ml1930-1Bk)

    • Do not incinerate. • Do not crush, puncture or open cells or disassemble. • Do not weld or solder to the battery’s body. • Do not expose contents to water. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 44 RIGHT arrow opens PROGRAM mode. Opens the top level menu. UP or DOWN arrow toggles between Identifies which AIFB is the source of the AIFB 1 and AIFB 2. displayed value. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 45: Programming Via The Handheld Programmer

    PROGRAM mode within the last 10 minutes, or menu level 1 if power has been cycled since then. ① Handheld programmer ② Display ③ Maximum distance: 300 mm ( 1 ft) SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 46 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. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 47 • Press RIGHT arrow to accept it. Press RIGHT arrow to accept it.The LCD returns to parameter view and displays the new selection. ① Parameter name ② Parameter number ③ Current selection SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 48 • Captures the current path [see Secondary Value (4.11.)] Plus or minus Numeric Changes the sign of the entered value. sign editing Numeral Numeric Enters the corresponding character. editing SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 49: Quick Start Wizard Via The Handheld Programmer

    Selects the appropriate echo processing algorithms for the material [see Position Detect (2.5.7.2.) for more detail]. Options LIQUID LIQUID LOW DK (low dielectric liquid – CLEF algorithm enabled) dK < 3.0 SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 50 Distance to material surface referenced from Low calibration point SPACE Distance to material surface referenced from High calibration point DISTANCE Distance to material surface referenced from Sensor reference point See Material Level (2.3.5.) for more detail. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 51 Range: 0.00 to 20.00 m High calibration point Distance from Sensor Reference Point to High Calibration Point: usually process full level. (See Operation for an illustration.) Values Range: 0.00 to 20.00 m SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 52 BACK, CANCEL, FINISH (Display returns to 1.1 Quick Start Wiz menu when Quick Start is successfully completed.) Press DOWN arrow (Finish). Then press LEFT arrow to return to Measurement mode. SITRANS LR250 is now ready to operate. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 53: Remote Operation

    • AMS Device Manager is a software package that monitors the process values, alarms and status signals of the device. Details on using AMS Device Manager to program your device can be found in the full operating instructions. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 54: Service And Maintenance

    Service and maintenance Basic safety information WARNING Impermissible repair of the device • Repair must be carried out by Siemens authorized personnel only. CAUTION Releasing button lock Improper modification of parameters could influence process safety. • Make sure that only authorized personnel may cancel the button locking of devices for safety-related applications.

  • Page 55: Cleaning

    WARNING Electrostatic charge Danger of explosion in hazardous areas if electrostatic charges develop, for example, when cleaning plastic surfaces with a dry cloth. • Prevent electrostatic charging in hazardous areas. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 56: Maintenance And Repair Work

    Please note the following: • The user is responsible for all changes and repairs made to the device. • All new components must be provided by Siemens. • Restrict repair to faulty components only. • Do not re-use faulty components.

  • Page 57: Part Replacement

    Replacing the antenna 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, please ensure the correct antenna version is used, otherwise a re-calibration will need to be performed by Siemens authorized personnel.

  • Page 58: Return Procedure

    Any devices/replacement parts which are returned without a decontamination declaration will be cleaned at your expense before further processing. For further details, refer to the operating instructions. SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 59: Technical Specifications

    Technical specifications Note Device specifications Siemens makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. For a complete listing, including Approvals, see the full operating instructions. Note • The maximum temperature is dependent on the process connection, antenna materials, and vessel pressure.

  • Page 60: Power

    Technical specifications 9.1 Power Power Bus powered 9-32 V DC, per IEC 61158-2 (Foundation Fieldbus) Current consumed 20 mA SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

  • Page 61: Product Documentation And Support

    Entering a serial number 1. Open the PIA Life Cycle Portal (https://www.pia-portal.automation.siemens.com). 2. Select the desired language. 3. Enter the serial number of your device. The product documentation relevant for your device is displayed and can be downloaded.

  • Page 62: Technical Support

    In addition to our technical support, Siemens offers comprehensive online services at Service & Support (http://www.siemens.com/automation/service&support). Contact If you have further questions about the device, contact your local Siemens representative at Personal Contact (http://www.automation.siemens.com/partner). To find the contact for your product, go to "all products and branches" and select "Products &...

  • Page 63: Index

    Local User Interface (LUI), 41 handheld programmer, 45 loop voltage vs. loop resistance key functions, 48 power supply requirements, 36 enclosure LUI (Local User Interface) opening, 31 contrast adjustment, 41 flange bolting instructions, 26 SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...
  • Page 64 36 pressure applications, 18 Pressure Equipment Directive, 18 programmer handheld, 43 programming via the handheld programmer, 45 Qualified personnel, 14 repair cautions, 56 excluded liability, 57 Return procedure, 58 SITRANS LR250 with FOUNDATION FIELDBUS Compact Operating Instructions, 09/2021, A5E48453221-AB...

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