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Siemens Sitrans LR250 User Manual

Siemens Sitrans LR250
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Safety information
2.1 Preconditions for safe use
SITRANS LR250 (PROFIBUS PA)
14 Operating Instructions, 08/2014, A5E32221386-AC
2.1.3
FCC Conformity
US Installations only: Federal Communications Commission (FCC) rules
WARNING
Improper device modifications
Danger to personnel, system and environment can result from improper modifications to the
device.
Changes or modifications not expressly approved by Siemens could void the user’s
authority to operate the equipment.
Note
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. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the operating instructions, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference to radio communications, in which case the user will
be required to correct the interference at his own expense.

Table of Contents

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Siemens Sitrans LR250 Specifications

General IconGeneral
Accuracy± 2 mm
Power Supply10.5 to 42 V DC
Measurement PrincipleRadar
Process Temperature-40 to +80 °C
Process PressureUp to 40 bar
Output Signal4 to 20 mA HART
CommunicationHART
Enclosure RatingIP68
Housing MaterialAluminum, stainless steel

Summary

Safety Information

Safety Information

Preconditions for Safe Use

Stresses observing instructions and device symbols for safe operation.

Use in Hazardous Areas

Details qualifications required for personnel working in hazardous areas.

Installing/Mounting

Proper Mounting

Gives general notes and notices for correct mounting procedures.

Nozzle Design

Details nozzle design requirements and recommendations for various antenna types.

Disassembly

Connecting

Connecting SITRANS LR250

Gives warnings about power source and loss of protection due to installation.

Wiring Setups for Hazardous Area Installations

Outlines the three wiring options for hazardous areas.

Intrinsically Safe Wiring

Details intrinsically safe wiring and ATEX certificate information.

Instructions Specific to Hazardous Area Installations

Lists ATEX directive instructions for equipment safety in hazardous areas.

Commissioning

Quick Start Wizard via the Handheld Programmer

Provides notes and instructions for using the Quick Start Wizard.

Remote Operation

Operating via SIMATIC PDM

Introduces SIMATIC PDM as a software for device commissioning and maintenance.

Configuring a New Device via SIMATIC PDM

Explains how to configure a new device using SIMATIC PDM.

Quick Start Wizard via SIMATIC PDM

Guides through the Quick Start wizard using SIMATIC PDM.

Changing Parameter Settings using SIMATIC PDM

Explains how to change parameter settings using SIMATIC PDM.

Parameter Reference

Parameter Reference

Provides notes on parameter names, menu structure, and quick access.

Language (1.1.)

Lists parameters related to Quick Start, Language, Material, Response Rate, Units, and Operating Mode.

Material (2.3.5.)

Details Material, LOE Timer, and Calibration parameters.

Low Calibration Pt. (2.3.7.1.)

Explains Low Calibration Pt. and High Calibration Pt. parameters.

Response Rate (2.3.8.1.)

Details Response Rate, Fill Rate, and Empty Rate parameters.

Vessel Shape (2.4.1.1.)

Explains Linearization and Vessel Shape parameters.

Near Range (2.5.1.)

Covers Near Range and Far Range parameters for signal processing.

Auto False Echo Suppression (2.5.10.1.)

Details TVT Setup and Auto False Echo Suppression parameters.

Device Address (5.1.)

Explains how to set the PROFIBUS address and notes on address lock.

Service and Maintenance

Basic Safety Information

Provides safety warnings regarding impermissible repair and releasing key locks.

Maintenance and Repair Work

Outlines periodic inspection points and safety warnings for maintenance in hazardous areas.

Diagnosing and Troubleshooting

Communication Troubleshooting

Provides steps to troubleshoot communication issues, including wiring and addresses.

General Fault Codes

Lists general fault codes, their meanings, and corrective actions.

Operation Troubleshooting

Details common operating symptoms, causes, and resolutions.

Technical Data

Dimension Drawings

Appendix A: Technical Reference

Echo Processing

Explains the signal processing technology known as Process Intelligence.

Echo Lock (2.5.8.1.)

Explains Echo Threshold and Echo Lock parameters.

Auto False Echo Suppression

Introduces Auto False Echo Suppression and its purpose.

Measurement Range

Details Near Range and Far Range parameters for measurement.

Damping

Explains Measurement Response and Damping parameters.

Loss of Echo (LOE)

Explains Loss of Echo (LOE) and its conditions.

Appendix C: Communications via PROFIBUS

PROFIBUS Address

Explains PROFIBUS address identification and setting.

LCD Menu Structure

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