Outputs, User Interface, Communications | Siemens Sitrans, LC 500

Safety	•	current signalling according to NAMUR NE 43;
		3.6 to 22 mA / 22 to 3.6 mA
	•	probe input ESD protected to 55 kV
	•	inputs/outputs fully galvanically isolated
	•	polarity-insensitive current loop
	•	fully potted
	•	integrated safety barrier
Diagnostics (Includes	•	primary variable (PV) out of limits
fault alarm)	•	system failure measurement circuit
	•	deviation between A/D and D/A converter
		values
	•	check sum
	•	watch dog
	• self-checking facility

Outputs

•	galvanically isolated
•	damping	range 1 to 10,000
Current loop
•	continuous signal	4 to 20 mA / 20 to 4 mA
•	2-state functionality	4 or 20 mA / 20 or 4 mA, on or off
•	time delay	1 to 100 sec. activating / de-activating
• adjustable hysteresis (on / off)		0 to 100%, min. 1% of range
Solid-state switch		40 Vdc / 28 Vac / 100 mA at 2 VA max.
•	time delay	1 to 100 sec. activating / de-activating
• adjustable hysteresis (on / off)		0 to 100%, min. 1% of range

User Interface

Local digital display	4 1/2 digit LCD
Rotary function switch	for selecting programmable menu items
• 16 Positions	0 to 9, A to F
Push-buttons: RED (+), BLUE (–)	used in conjunction with rotary switch, for
	programming menu items

Communications

HART 1 Communication protocol

Specifications

1.HART® is a registered trademark of the HART Communications Foundation.

7ML19985GE01

SITRANS LC 500 – INSTRUCTION MANUAL

Page 5

Image 11

Siemens Sitrans, LC 500 instruction manual Outputs, User Interface, Communications

Contents

Sitrans Technical Publications Safety Guidelines Qualified PersonnelTechnical data subject to change Table of Contents Maintenance Appendix C Hart Documentation Iii 113 Introduction Applications Manual Safety NotesSafety marking symbols Description Abbreviations and IdentificationsShort form Long Form Performance PowerSpecifications Environmental Communications OutputsUser Interface Enclosure electronic WeightElectrodes Wetted Parts Approvals Process Conditions Capacitance measurement in a cylindrical metal tank Sitrans LC 500 TransmitterOperating Principles Operation & Application Non-conductive or conductive contents Stilling well Sitrans LC 500 electrodeA non-conductive or irregular tank Inactive Active shieldActive Measurement Section Probe seal Application Sitrans LC USL Level Measurement Interface Measurement Switch action Via the solid-state output Fault SignallingVia the loop current Via Hart Probe Configuration Sitrans LC 500 Probe Configuration Seal Types Electrode AssemblyProcess Connections Pressure and Temperature Considerations Non-standard applications Non-Standard Application Sitrans LC 500 Configuration Handling Electrodes Sitrans LC 500 InstallationInstallation Process Cautions Protection for solid-state switchMounting Instructions Sitrans LC 500 Standard Level Version Interconnection WiringInterconnection Sitrans LC Supply Selecting the correct instrumentation cable Cable Which allows for 560 meters on that side Is applications maximum cable lengthMulti-drop applications maximum cable length Subtract the capacitance for the device Terminals Connecting Sitrans LCConnection Diagram Grounding instructions Where the stilling well is welded to the tank 7ML19985GE01 Metal Tanks Grounding Examples Sitrans LCSystem Grounding referencing Non-Conductive Tanks Cathodically Protected Metal Tanks Example Safety Grounding Hazardous area Non-hazardous area Communications DiagnosticsTypical PLC configuration with Hart Applications for Solid-state Output Current values used as signals from digital transmitters Setting Description Factory SettingsSwitch Protection Diode Settings Interconnection Setting 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 Push-buttons Rotary switchAccess to a menu item Adjusting the value Transmitter Variable User-defined Functions Units Transmitter Variables Quick Start Sequence Start-up Sitrans LCQuick Start Start Up Num Rotary Switch Positions Quick Reference 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 Inspections MaintenanceMaintenance Test function Maintenance If you are unable to change settings Troubleshooting Sitrans LCTroubleshooting Error Description Cause Message Error Messages and Error CodesError Messages push-button operation Error Codes Hart Appendix a Menu Groups Menu Items Transmitter Variable Settings menu levelStepsize Update Value Rotary Left Switch Description Values Position Arrow Lower Sensor Limit Set the rotary switch to BDamping Description Values Position Rotary SwitchDelta Range Setting Upper Sensor Limit 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 Display the Highest / Lowest Recorded Value Rotary Left Description Values SwitchRotary Switch Left Arrow Description Position To change from menu 10 to menu Set the rotary switch to Transmitter Variables Dynamic Value menu level Rotary Left Switch Mode Description Action Values Indicator Analog Output Signalling proportional or 2-state menu levelUpper Threshold Delay 2-state mode Rotary Left Added Switch Arrow Mode Description Values Position Rotary Left Added SwitchArrow Indicator Upper Threshold Setting 2-state mode Lower Threshold Setting 2-state mode Analog Signalling Mode 2-state menu level State State Low Rotary Left ModeState High 22.0 mA Analog Fault Signalling 2-stateState mode must be selected at menu For detailed information, see Fault Signalling on Identifier Cription Digital Output Signalling solid-state output menu levelUpper Threshold Delay solid-state output Rotary Left Des Switch Value Lower Threshold Delay solid-state outputUpper Threshold Setting solid-state output Indicator Cription Rotary Left Des Switch ModeLower Threshold Setting solid-state output Rotary Left Added Des Switch Mode = cc Digital Signalling Mode solid-state outputRotary Left Des Switch Arrow Mode Cription Action Action Values Digital Fault SignallingRotary Left Switch Mode Miscellaneous Output Signal Processing TestFactory Settings Switch Left Arrow Description Display Meaning Position Range Inversion Rotary Switch Left Arrow Description Mode Values PositionProtection Display Switch Local Settings Appendix B Appendix B LCD display examplesLCD alphanumeric display examples Simatic Process Device Manager PDM Appendix C Hart DocumentationHart information Hart Device Descriptor DD Sitrans LC 500 DD Menu/Variable Organization Hart Response Code Information Command Description Usage Number Hart Conformance and Command Class Non-volatile Memory Data Storage Command Description UsageGeneral Transmitter Information Damping information Units conversions Additional Universal Command SpecificationsBurst mode MultiDrop operation Sitrans LC 500 Block Diagram Appendix D Block Diagram, and Correlation table, mA to % Appendix D Correlation % 100% to 4-20 mA or 20-4 mARange 0 100 % Current in mA Appendix E Standard VersionStandard Version S-Series, Threaded Series Threaded Series Cable Version With weight With anchor Features Standard Version S-Series, Threaded Series, Welded Flange Features Standard Version S-Series, Flanged Series Features Standard Version D-SeriesFeatures Standard Version DD-Series Standard Version D-Series, Machined Flange Thermal isolator to prevent Features Standard Version, Probe/ Thermal IsolatorSD-Series Probe/Thermal Isolator All wetted parts made of PFA Interface Version, threaded optional sanitary and flanged Interface Version Sanitary Version Features Sanitary Version, Tri-Clamp Flange Standards Flanges Capacitance in oil Examples using dimensions above Capacitance in airApplications Examples Generic Application Calculations PF = 33.2 pF Larger tank, dimensions in feet 08.0 Device settingsCAn 90.0 CHi Application Analog fault signalling 2-state outputCurrent loop is in 2-state mode C Hi selected State fault signalling enabled F Hi selected LSL is set to 7.3 pF USL is set to 83.50 pF Appendix F Appendix F ApprovalsCE Certificate Sitrans LC 500 / Pointek CLS 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 Index Wiring Quick Reference Quick Reference Sitrans LC Rotary Switch Positions Quick Reference Page 7ml19985GE01