TVT Hover Level, Manual TVT Shaper Mode | Siemens LR 460 manual

3.5.6.3. TVT Hover Level

Defines in percent how high the TVT (Time Varying Threshold) curve is placed above the echo profile, with respect to largest echo.

Values

Range: 0 to 100%

Default: 40%

3.5.6.4. Manual TVT Shaper Mode

Enables the TVT curve to be manually adjusted at a specified range.

	Options		ON

		*	OFF
		*	OFF

3.5.7. Manual TVT shaper

You can manually adjust the TVT curve by entering values for up to 120 breakpoints on the curve.

	Values	Range: -50 to 50

		Preset: 0
		Preset: 0

	Related	•	3.5.6.4. Manual TVT Shaper Mode

Use this feature to bias the shape of the TVT curve to avoid selecting false echoes from fixed objects.

Each breakpoint is normalized to a value of 0. Change the value of the breakpoints to adjust the curve. In the case of multiple false echoes, shaping can be applied along different points of the curve. Shaping should be applied sparingly in order to avoid missing the true echo.

The Manual TVT shaper feature allows you to adjust the TVT curve while viewing the echo profile.

To change a breakpoint via PDM:

a.Confirm that Shaper Mode is selected.

b.Open the menu Device – TVT Shaper then either adjust the curve manually, or enter values for the desired breakpoints. (See Manual TVT Shaper on page 38.)

To change a breakpoint via the handheld programmer:

a.Confirm that Shaper Mode is selected.

b.Access the submenu for the breakpoint number in question and enter values for all desired breakpoints.

3.5.7.1.Shaper A (1 - 9).

3.5.7.2.Shaper B (10 - 18)

3.5.7.3.Shaper C (19 - 27)

Parameters

7ML19985JM01

SITRANS LR 460 – INSTRUCTION MANUAL

Page 59

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Siemens LR 460 TVT Hover Level, Manual TVT Shaper Mode, Manual TVT shaper, To change a breakpoint via PDM

Contents

Sitrans Contact Smpi Technical Publications at the following address Table of Contents Quick Start Wizard via the handheld programmer Table of Cotents AIFB1 AIFB2 Iii Appendix F Hart Information Structure Safety marking symbols Safety NotesDirect Current 7ML19985JM01 FCC and IC Conformity Canadian Installations only Industry Canada IC rules Support ManualApplication Examples Abbreviations and Identifications Short Long Form Description Units Cont’d System Implementation ProgrammingApprovals and Certificates Power SpecificationsSpecifications Performance Interface Mechanical Programmer infrared keypad1 Communication EnvironmentalProcess Approvals Standard configuration Dimensions Mounting Location InstallationInstallation Nozzle design Key considerationsNozzle location Device orientation Polarization Reference Point Installation in vessel with obstructionsPolarization Reference Point Holding the electronics enclosure firmly Easy Aimer Installation Flow rate versus applied pressure Air Purging System OptionalAir Consumption Pipe Flange Thick Bolt Hole No. Slotted Flange Dimensions see above Optional Dust Cap Installation Connecting Sitrans LR Wiring AC version DC version Hart wiringConnecting Hart Typical PLC/mA configuration with Hart Bus Termination AC version DC version Profibus wiringPower Demands From Connecting Sitrans LR 460 on page 19, step For use and assembly, refer to the main instructions Hazardous area installationsProduct Nameplate Reference European Atex Directive 94/9/EC, Annex II, 1/0/6 Thermal Data for 7ML5426 Series Device Permitted ambientDirective 94/9/EC Annex II, clause 61241 -17 in Europe 7ML19985JM01 Quick Start RUN mode displayActivating Sitrans LR Quick Start Programming Sitrans LR Press Mode to return to RUN mode Quick Start Quick Start Wizard via the handheld programmerLanguage Application Type Options Units Operation typesHigh Calibration Point Values Device Description DD Configuring a new deviceQuick Start Wizard via Simatic PDM Identification Quick Start Wizard steps Application type Range Setup Summary Level application example Quick Start Setting Description Auto False Echo Suppression Functions in Simatic PDM Simatic PDM Rev .0, SP2 FeaturesOperating Sitrans LR 460 via Open the menu View Trend to see the level trend over tme Trend Diagram Level Trend over TimeEcho profile saving and viewing Open the menu Device TVT Shaper Manual TVT Shaper Display Accessing Functions in PDMOnline Display Device Description DD Changing parameter settings via Simatic PDMConfiguring a new device Reset Parameters accessed via pull-down menusConfiguration Flag Reset Hart only Calibrating LR 460 via PDM Simulate AO Analog Output Digital/Analog TrimSimulation Simulate Analog Input to AIFB1 or AIFB2 Parameter menus Parameter ReferencePull-down menus via Simatic PDM Device menus View menus Operation Quick Start WizardLanguage Options Slow Identification ConfigurationOperation Unit Open the menu Device Set Address Description To perform a Reset via the handheld programmerProgram Mer Programmer HandheldDevice Statistics Input Sensor Calibration Low Calibration Pt. default 30.000 mCalibration Sensor Units Low Level Point default High Calibration Pt. default 0.350 mHigh Level Point default Level Offset default Measuring Limits Detailed SetupValues Options Ters RelatedParameters Parame Echo Sampling Window ParameEcho detection position Range Window UsedNear Range Far Range To use Auto False Echo Suppression via Simatic PDM TVT Auto False Echo Suppression setupOpen the menu Device Auto False Echo Suppression Auto TVT Auto False Echo Suppression Example after Auto False Echo Suppression Display before Auto False Echo Suppression TVT Hover Level Manual TVT Shaper ModeManual TVT shaper To change a breakpoint via PDM Values Range 0.0000 to 99999 m / min Altered byAltered by Related AIFB1 OutputEcho Information Batch Phase Target Mode Profibus PA onlyUnit Filter Time Constant Process Value Scale Upper Limit AlarmUpper Value Output Scale Limit Hysteresis Fail-safe Mode Profibus PA onlyMin Out Max Out MA Output AIFB2See AIFB1 the parameters for AIFB2 are identical MA OUT value = x x 16 mA + 4 y Man Value Related parame Certificates and Approvals Relay ConfigurationDevice Certification Related parame Remaining Sensor Lifetime Maintenance settingsRemaining Device Lifetime Calibration Interval Service Interval Parameters Appendix a Technical Reference Related Response LOE Timer Fill RatePrinciples of Operation Measurement Response Profile monitoring via Simatic PDM Echo ProcessingEcho selection Time Varying Threshold TVT Auto False-Echo Suppression False EchoesBeam angle at -3dB reference Technical LOE Timer Fail-safe ModeEcho confidence Near Range Blanking Fail-safe value Temperature on the LCD secondary display Maximum Process Temperature Chart Troubleshooting Appendix B TroubleshootingTroubleshooting LR Symptom Possible cause Remedy Set Far Range to a lower value Reads empty Reads vessel bottom RegionFluctuates Is normal Troubleshooting LR 460 cont’d Symptom Possible cause Remedy General Fault Codes/PROFIBUS PA Extended Diagnostics Outside its temperature Perform serviceSame Check configuration for Has expired Eeprom damaged Local Siemens Representative Local Siemens By a memory error RepresentativeEeprom corrupt For the network Module Representative Local Siemens Device has been lost RepresentativeUnable to collect profile Local Siemens Representative Local Siemens Distance measurement Representative Unit Repair and Excluded Liability Appendix C MaintenanceMaintenance Program Mode Display RUN mode startup displayLCD Display Local Interface Handheld programmer Hand-held programmer key functions in RUN modeProgramming via the handheld programmer Key Function Hand-held programmer key functions in Edit mode Hand-held programmer key functions in Navigation modeIndividual Parameter Reset Key Name When Navigation Mode Simatic Process Device Manager PDM Hart Device Description DDHart modem interface for Simatic PDM Hart Communications Sitrans LR 460 does not support Burst Mode Burst ModeHart Version Hart Communication Parameter Profile structure Hart Block Model for recording and processing measured valuesLevel Transducer Block LTB F-90 Analog Input Function Blocks AIFB1 and AIFB2 Description of the blocks Appendix G Remote operation via Configuration toolDevice Description Remote Operation PA Configuring a new device procedure ConfigurationGSD file Setting the Profibus address Calibration via Simatic PDM Configuring Profibus PA with an S7-300/ 400 PLC Cyclic versus Acyclic Data Appendix H Communication viaCyclic Data Communication PA Status Codes for Good Quality Status ByteCodes for Bad Quality H-96 Acyclic Diagnostics DiagnosticsDiagnosis reply applies only to cyclic masters Status Codes for Uncertain Quality Byte Bit Description Indication Class Acyclic Data Transmission= set H-98 Profile structure PA Appendix J Profibus PA Profile StructureProfibus Level Device Design Level Transducer Block function groups See parameter diagram onProfie structure PA How the Level Transducer Block works Sensor Reference Point How the AIFBs work Electronics temperatureAnalog Input Function Blocks 1 Setting Description Output value J-104 Initial release Software DD Rev Date ChangesSoftware rev K-106 Sorftware rev Glossary Glossary Glossary Stilling-well see stillpipe Glossary Index Index Quick Start Wizard Reform Echo Reliable echo indicator 85 repairView Status byte LCD menu structure Echo SEL LCD menus LCD menu charts LCD menu charts 7ml19985JM01