Maintenance, Test function, Inspections | Siemens LC 500, Sitrans

Maintenance

Maintenance

Test function

Auto Self-testing

SITRANS LC 500 continuously performs a variety of tests to verify that the device is functioning correctly. These include a test where a known capacitor is applied to the input of the device. The internal results must match the known capacitance value. If a deviation is detected the Fault/Failure can be flagged with a pre-set loop-current (user configurable) and as a status in each HART message.

Manual testing

In order to test the proper processing of signals in PLC/DCS equipment, SITRANS LC 500 allows you to invert the output signal status. In Menu 11, when both buttons are pressed simultaneously, the signal outputs switch to their opposite state. When the buttons are released, the outputs revert to the initial state.

Note: If a Fault or Failure is present, its signal will take precedence over the test function.

If no Fault/Failure is present and no buttons are pressed, the display for menu 11 alternates between two test patterns which together illuminate all the segments of the display. If the loop-current control is in analog mode the loop current will hold the last value, during this test.

Inspections

Under normal circumstances, the SITRANS LC 500 transmitter requires no maintenance. However, we recommend that you schedule periodic inspections of SITRANS LC 500.

The inspection can be subdivided into two parts:

1.Visual Inspection: confirm the following conditions:

a.Inside enclosure is clean and dry.

b.Enclosure sealing is intact and functioning properly (not hardened).

c.All screw connections are tight.

d.Ground connections inside the housing are solid.

e.Ground connections outside the housing are solid.

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SITRANS LC 500 – INSTRUCTION MANUAL

7ML19985GE01

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Siemens LC 500, Sitrans instruction manual Maintenance, Test function, Inspections

Contents

Sitrans Technical Publications Safety Guidelines Qualified PersonnelTechnical data subject to change Table of Contents Maintenance Iii Appendix C Hart Documentation 113 Applications Introduction Manual Safety NotesSafety marking symbols Abbreviations and Identifications Short formLong Form Description Power SpecificationsEnvironmental Performance Communications OutputsUser Interface Weight ElectrodesWetted Parts Enclosure electronic Process Conditions Approvals Sitrans LC 500 Transmitter Operating PrinciplesOperation & Application Capacitance measurement in a cylindrical metal tank Non-conductive or conductive contents Stilling well Sitrans LC 500 electrodeA non-conductive or irregular tank Active shield ActiveMeasurement Section Probe seal Inactive Application Sitrans LC Level Measurement USL Switch action Interface Measurement Fault Signalling Via the loop currentVia Hart Via the solid-state output Sitrans LC 500 Probe Configuration Probe Configuration Seal Types Electrode AssemblyProcess Connections Pressure and Temperature Considerations Non-Standard Application Sitrans LC 500 Configuration Non-standard applications Handling Electrodes Sitrans LC 500 InstallationInstallation Process Cautions Protection for solid-state switchMounting Instructions Sitrans LC 500 Standard Level Version Wiring Interconnection Sitrans LCSupply Interconnection Cable Selecting the correct instrumentation cable Is applications maximum cable length Multi-drop applications maximum cable lengthSubtract the capacitance for the device Which allows for 560 meters on that side Terminals Connecting Sitrans LCConnection Diagram Where the stilling well is welded to the tank 7ML19985GE01 Grounding instructions Metal Tanks Grounding Examples Sitrans LCSystem Grounding referencing Cathodically Protected Metal Tanks Non-Conductive Tanks Safety Grounding Example Hazardous area Non-hazardous area Communications DiagnosticsTypical PLC configuration with Hart Current values used as signals from digital transmitters Applications for Solid-state Output Factory Settings Switch Protection DiodeSettings Setting Description Setting Interconnection User Interface Sitrans LC 500 User InterfaceLCD display Description Menu Group Details How to access the dataMenu Levels 00 to 0F and 10 to 1F Rotary switch Access to a menu itemAdjusting the value Push-buttons Transmitter Variables Transmitter Variable User-defined Functions Units Start-up Sitrans LC Quick StartStart Up Quick Start Sequence Rotary Switch Positions Quick Reference Num To change from menu 10 to menu Menu levels 0To change from menu 00 to menu Calibration using push-button adjustment Current percent of span = 14/20 = 70% Changing stepsize value menu100% value is set Start Up Calibration using Hart Start Up Number Description Number Maintenance MaintenanceTest function Inspections Maintenance If you are unable to change settings Troubleshooting Sitrans LCTroubleshooting Error Messages and Error Codes Error Messages push-button operationError Codes Hart Error Description Cause Message Appendix a Menu Groups Transmitter Variable Settings menu level Stepsize Update ValueRotary Left Switch Description Values Position Arrow Menu Items Lower Sensor Limit Set the rotary switch to BDamping Rotary Switch Delta Range SettingUpper Sensor Limit Description Values Position Lower Range Value Affected Rotary Left Switch Mode DescriptionAffected Rotary Left Switch Mode Dynamic Value, Primary Variable PV menu 00 and menu Transmitter Variable Values menu levelUpper Range Value Rotary Left Description Values Switch Rotary Switch Left Arrow Description PositionTo change from menu 10 to menu Set the rotary switch to Display the Highest / Lowest Recorded Value Rotary Left Switch Mode Description Action Values Transmitter Variables Dynamic Value menu level Analog Output Signalling proportional or 2-state menu level Upper Threshold Delay 2-state modeRotary Left Added Switch Arrow Indicator Rotary Left Added Switch Arrow IndicatorUpper Threshold Setting 2-state mode Mode Description Values Position Analog Signalling Mode 2-state menu level Lower Threshold Setting 2-state mode State State Low Rotary Left ModeState High Analog Fault Signalling 2-state State mode must be selected at menuFor detailed information, see Fault Signalling on 22.0 mA Digital Output Signalling solid-state output menu level Upper Threshold Delay solid-state outputRotary Left Des Switch Identifier Cription Value Lower Threshold Delay solid-state outputUpper Threshold Setting solid-state output Rotary Left Des Switch Mode Lower Threshold Setting solid-state outputRotary Left Added Des Switch Mode Indicator Cription = cc Digital Signalling Mode solid-state outputRotary Left Des Switch Arrow Mode Cription Action Action Values Digital Fault SignallingRotary Left Switch Mode Output Signal Processing Test Factory SettingsSwitch Left Arrow Description Display Meaning Position Miscellaneous Rotary Switch Left Arrow Description Mode Values Position Protection Display Switch LocalSettings Range Inversion Appendix B Appendix B LCD display examplesLCD alphanumeric display examples Appendix C Hart Documentation Hart informationHart Device Descriptor DD Simatic Process Device Manager PDM Sitrans LC 500 DD Menu/Variable Organization Hart Response Code Information Hart Conformance and Command Class Command Description Usage Number Command Description Usage General Transmitter InformationDamping information Non-volatile Memory Data Storage Additional Universal Command Specifications Burst modeMultiDrop operation Units conversions Appendix D Block Diagram, and Correlation table, mA to % Sitrans LC 500 Block Diagram Appendix D Correlation % 100% to 4-20 mA or 20-4 mARange 0 100 % Current in mA Standard Version Standard Version S-Series, ThreadedSeries Threaded Appendix E Features Standard Version S-Series, Threaded Series Cable Version With weight With anchor Features Standard Version S-Series, Flanged Series, Welded Flange Features Standard Version D-Series Features Standard Version DD-SeriesStandard Version D-Series, Machined Flange Series Features Standard Version, Probe/ Thermal Isolator SD-Series Probe/Thermal IsolatorAll wetted parts made of PFA Thermal isolator to prevent Interface Version Interface Version, threaded optional sanitary and flanged Features Sanitary Version, Tri-Clamp Sanitary Version Flanges Flange Standards Examples using dimensions above Capacitance in air Applications ExamplesGeneric Application Calculations Capacitance in oil Larger tank, dimensions in feet PF = 33.2 pF Device settings CAn90.0 08.0 Application Analog fault signalling 2-state output Current loop is in 2-state mode C Hi selectedState fault signalling enabled F Hi selected CHi USL is set to 83.50 pF LSL is set to 7.3 pF Appendix F Approvals CE CertificateSitrans LC 500 / Pointek CLS Appendix F Hinweis CE BescheinigungWir erklären hiermit auf eigene Verantwortung, dass der Instrument label Sitrans LC Kema certificate and schedules Appendix F Appendix F Appendix F Appendix F Appendix F Appendix F Appendix F Namur recommendation NE Application SpecificationsCertificates and Approvals Approval Glossary Glossary 7ML19985GE01 Index IndexNumerics Wiring Index Quick Reference Sitrans LC Quick Reference Rotary Switch Positions Quick Reference Page 7ml19985GE01