Instruction Manual January 2003 sitrans LC 500
Safety Guidelines Warning notices must be observed to ensure personal safety as well as that of others, and to protect the product and the connected equipment. These warning notices are accompanied by a clarification of the level of caution to be observed. Qualified Personnel This device/system may only be set up and operated in conjunction with this manual. Qualified personnel are only authorized to install and operate this equipment in accordance with established safety practices and standards.
Applications ....................................................................................................................................1 Safety Notes .............................................................................................................................................2 Safety marking symbols ..............................................................................................................2 The Manual ...............................................................
Table of Contents mmmmm Cathodically Protected Metal Tanks ....................................................................................29 Non-Conductive Tanks ............................................................................................................29 Safety Grounding .........................................................................................................................30 Communications ............................................................................
Appendix D: Block Diagram, and Correlation table, mA to % ................................81 Correlation Table: 0% - 100% to 4-20 mA or 20-4 mA ...................................................................82 Appendix E: SITRANS LC 500, alternate versions and application details ...........83 Standard Version ...................................................................................................................................83 Standard Version S-Series, Threaded .........................
Table of Contents mmmmm Appendix F: Approvals .....................................................................................................96 CE Certificate ................................................................................................................................96 CE Certificate ................................................................................................................................97 Instrument label: SITRANS LC 500 ...................................
SITRANS LC 500 SITRANS LC 500 can be used as a level controller, by connecting the mA output and/or the solid-state switch to a relay, and activating a pump via an auxiliary power circuit.
Introduction mmmmm Safety Notes Special attention must be paid to warnings and notes highlighted from the rest of the text by grey boxes. WARNING: relates to a caution symbol on the product, and means that failure to observe the necessary precautions can result in death, serious injury, and/or considerable material damage. WARNING: means that failure to observe the necessary precautions can result in death, serious injury, and/or considerable material damage.
Abbreviations and Identifications Long Form A/D Analog to Digital Description Units Conformitè Europèene / Factory CE / FM / CSA Mutual / Canadian Standards safety approval Association D/A Digital to Analog DAC Digital Analog Converter DCS Distributed Control System ESD Electrostatic Discharge Ex Explosion Proof safety approval Exd Flame Proof safety approval FV Full Vacuum HART Highway Addressable Remote Transducer IS Intrinsically Safe safety approval LRV Lower Range Value valu
Technical Specifications: SITRANS LC 500 Power Supply voltage • maximum: • minimum 33 Vdc, (30 Vdc for IS) 12 Vdc at 3.6 mA (9.5 Vdc at 22 mA) Loop current 3.6 to 22 mA / 22 to 3.6 mA (2-wire current loop) Specifications mmmmm Environmental Location indoor/outdoor Altitude 2000 m max.
• current signalling according to NAMUR NE 43; 3.6 to 22 mA / 22 to 3.
Electrodes Process connections • threaded connection AISI 316 L stainless steel, 3/4”, 1”, 1-1/4”, 1-1/2”, 2”,NPT, BSPT, JIS • flat-faced flanges AISI 316 L stainless steel (optional C 22.8 N, Monel1 400, Hastelloy2 C22, Duplex) ANSI, DIN3 Probe diameter Specifications mmmmm • Cable: • Rod: 9 mm (0.35”) 16 mm (0.63”) or 24 mm (0.95”) Probe length • Rod version: • Cable version: up to 3500 mm (138”) with 16 mm (0.63”) diameter probe up to 5500 mm (216”) with 24 mm (0.
Process Conditions Pressure rating1 • standard • option FV (full vacuum) to 200 bar (2920 psi) up to 525 bar (7665 psi) Temperature rating1 –200 °C to 200 °C (–328 °F to 392 °F) up to 400 °C (752 °F) • standard • option Approvals Dust Ignition Proof (DIP) ATEX II 3GD (EEx nA [ib] IIC T4...T6) FM/CSA: Class I, Div. 2, Gr. A,B,C,D T4 Class II, Div. 1, Gr. E,F,G T4 Class III, Div. 1, Gr. E,F,G T4 Intrinsically Safe (IS) ATEX II 1 G (EEx ia IIC T4...T6) FM/CSA: Class I, Div. 1, Gr.
SITRANS LC 500: Transmitter Operating Principles Capacitance1 measurement operates by forming a variable capacitor resulting from the installation of a vertical measurement electrode in a vessel or silo. The tank wall usually forms the reference electrode of the capacitor. Whatever material is sandwiched between the two electrodes forms the dielectric.
K×ε×L C = -------------------------Log ( D ⁄ d ) where C = capacitance K = constant ε = dielectric constant L = active measurement length D = diameter of tank d = probe diameter. The formula1 is: (For detailed application examples, see page 91.) The transmitter measures the capacitance of the measurement electrode relative to the tank wall (reference electrode) and transforms it to a 4-20 mA signal.
In a non-conductive or irregular tank Where the vessel contents are non-conductive: • a reference electrode parallel to the measurement electrode is required • the reference electrode must be grounded to the instrument • a stilling well can form the reference electrode.
Conventional Capacitance Measurement R = (C1 + C2 + C3) + Ca (C1 + C2 + C3) + Ca + Cm R = Ratio between initial capacitance and total capacitance SITRANS LC 500 with Active Shield R = Ca Ca + Cm MeasuringCircuit MeasuringCircuit Ca = Initial capacitance (air) Cm = Capacitance Increase (product) C1 C1 = Capacitance connection point C2 C2 = Capacitance connection cable C3 C3 = Capacitance Process connection (includes active part) Ca Ca Cm Cm active shield active measurement section probe sea
The entire SITRANS LC 500 transmitter is potted in epoxy resin as part of the intrinsic safety protection. The potting also protects the electronics against mechanical vibration and moisture influences. The transmitter is connected to the electrode by a mini coaxial cable, and grounded to a connection point inside the enclosure. The external ground lug on the enclosure provides a means of connecting the instrument system ground to a grounded tank or stilling well1.
operationLC500.fm Page 13 Monday, January 27, 2003 6:22 PM Indicator - dynamic Primary Variable (units or % of range) 0-100% current loop connection Active Shield section solidstate switch output or 2-state mA output auxiliary power pump power solidstate output P USL URV = 100% Upper Threshold Setting = % (activation hysteresis) (deactivation hysteresis) Lower Threshold Setting = % LRV = 0% LSL 4.
Interface Measurement The capacitance of the electrode system is dependent on the dielectric constant of the product surrounding the probe. By comparing the capacitances resulting from different products with different dielectric constants, it is possible to determine which product is surrounding the probe. For miscible products: Contamination of one product by another can be measured: 100% product A 4 mA 100% product B 20 mA Values in between 4 and 20 mA represent the ratio of the two products.
Fault Signalling The SITRANS LC 500 has three fault signalling options: • via the loop-current • via HART • via the solid-state output or solid-state relay. Via the loop current When using the mA signal, the SITRANS LC 500 operates according to NAMUR standards1 for fault signalling.
SITRANS LC 500: Probe Configuration The probe (electrode) comprises a measurement section and an active shield section. This electrode connects to the capacitance detector portion of the two-wire loop powered electronic transmitter. The transmitter module is mounted in a powder-coated aluminum enclosure which provides reliable operation in environments with dust, moisture, and high-frequency interference.
Electrode Assembly SITRANS LC 500 electrodes come in a variety of formats to provide the necessary characteristics for correct mounting, chemical compatibility, temperature and pressure requirements, and dielectric constant of the medium. The main body of the manual discusses the standard configuration. Other options, with details, are shown in Appendix E: SITRANS LC 500, alternate versions and application details, page 83.
Pressure and Temperature Considerations The maximum temperature and pressure of operation for the standard SITRANS LC 500 level probe is 200°C (392°F) and 200 bar (2900 psi). Please consult the pressure curve on page 18 for qualifications that must be applied to these maximums. Enamel probes are recommended when the process temperature exceeds 200 °C, and/or in combination with very high pressure.
Non-standard applications Applications outside the standard capabilities of the S-Series require a different design configuration. These non-standard applications include: Non-Standard Application SITRANS LC 500 Configuration Non-metallic tanks with both conducting and non-conducting liquids. Use stilling well for second electrode reference. Non-conducting liquids in spherical and horizontal-cylindrical tanks. Use a stilling well as linearizer.
SITRANS LC 500: Installation Notes: • Installation shall only be performed by qualified personnel and in accordance with local governing regulations. • This product is susceptible to electrostatic discharge. Follow proper grounding procedures. WARNINGS: • Disconnect the device before any welding is carried out in the vicinity of the instrument.
Mounting Instructions The SITRANS LC 500 is easily installed: simply mount the instrument on the process connection of the vessel. Notes: • The transmitter is specified for use at temperatures ranging from –40 °C to 85 °C (–40 oF to 185 oF): if your process temperature is outside this range, a standard option is available with a thermal isolator. • Before mounting the SITRANS LC 500, check to ensure the threads are matching to avoid damaging them.
SITRANS LC 500: Standard Level Version Available with the following features: • • • • • • Threaded flanges, welded flanges, and single-piece flanges S series, D series, SD series, DD series, and HP series process seals Selections of standard ANSI and DIN flanges The most common electrode is insulated with PFA. Enamel (HP seal) is also available (rigid design only).
Interconnection: SITRANS LC 500 Supply Notes: • • • The transmitter is powered by the current loop and needs at least 9.5-13 Volt on the terminals: 9.5 V at 22 mA or 12 V at 3.6 mA. The maximum supply is 33 Volt. If the voltage is higher the device will shut down. The loop-circuit will withstand voltages up to 250 Vac/Vdc without any damage. The SITRANS LC 500 uses a switched power supply circuit, which makes the most efficient use of the available power present on the terminals.
Notes: Interconnection mmmmm Cable • • • • 1. 2. To maintain reliable transfer of the HART modem signals, the RC1 time constant of the connections should be less than 65 µSec. Cable capacitance must also be considered when selecting cable for intrinsically safe installations. For output signals (from the SITRANS LC 500), only the cable and barrier resistance are relevant. For input signals the measurement resistance is also relevant. Use twisted pair cable, screened as a pair.
2. 116 × 10 = 1160 m IS applications: maximum cable length In an IS application, the IS side of the barrier allows for only 70 nF. Example: Subtract the capacitance for the device: 70 – 5 = 65 nF 65 × 10 = 650 m This allows for a maximum 650 meters on the IS side. On the other side of the barrier: 121 – 65 = 56 nF which allows for 560 meters on that side. Note: The resistance of this length, 650 + 560 meters, could reach 145 Ohm (at 120 Ohm / km), which is too much.
Interconnection mmmmm Terminals The SITRANS LC 500 is equipped with two terminal blocks, both insensitive to polarity. One terminal block is intended for connecting the instrument cable (loop power). The other terminal block provides the solid-state switch output. Connecting SITRANS LC 500 The processor integrated circuit is covered by a label which contains product information and which also acts as a protective seal against moisture.
Protection for solid-state switch • Grounding instructions Notes: • • • Since the measurement occurs between the Measurement and Ground connections, it is important to have good, low-resistance, reliable connections in this circuit. Use a ground connection wire with a sufficiently large diameter relative to its length, and not less than 1 mm2.
Interconnection mmmmm Grounding Examples: SITRANS LC 500 Grounding is important for two reasons: 1. 2. To prevent interference to the signal: system grounding For safety purposes: safety grounding Several common applications are illustrated. They are separated into two groups: the first group illustrates System Grounding and the second illustrates Safety Grounding. System Grounding (referencing) For the measuring system to function correctly, the reference electrode must be properly grounded.
Cathodically Protected Metal Tanks ground lug optional stilling well metal The ground lug on the SITRANS LC 500 can be connected to the tank as shown. (See page 27 for further grounding details.) VKP Note: Grounding the SITRANS LC 500 as illustrated above provides only system grounding for referencing purposes: it does not provide safety grounding. ground lug Non-Conductive Tanks Non-metallic tanks always require a stilling well or proper grounded conductive medium.
Interconnection mmmmm Safety Grounding The safety grounding requirements are determined by the application and the connected instruments. The SITRANS LC 500 transmitter does not have any special requirements due to the galvanic separation between the measurement section and the loop section.
Example 3 non-hazardous area Stahl barrier: 9002/13-280110-00 (or equal) Type: Ser.: Date: Rev.: 110 mA 277 3 28V PA PA 4 DCS APPARATUS 1 Rmeas 2 28V Tampering voids warranty 0V Example 4 In Intrinsically Safe applications where the DCS has galvanically separated inputs, you can use either the type of barrier shown below, or the type shown in Example 2. non-hazardous area hazardous area Stahl barrier: 9002/01-280110-00 (or equal) 3 Type: Ser.: Date: Rev.
Interconnection mmmmm Communications The SITRANS LC 500 is equipped with HART communication1protocol2so that settings and values can be obtained and altered locally3or remotely. Typical PLC configuration with HART power supply1 R2= 250 Ω SITRANS LC 500 PC/laptop with Simatic PDM or HART communicator3 Diagnostics The internal diagnostic functions continuously monitor the operation of the transmitter. An error signal is generated if a failure or irregularity occurs.
Current values used as signals from digital transmitters Fault- mA Value (F) F =1 0 Fault- mA Value (F) F=0 F=1 20 22 3.6 4.0 mA 20.5 3.8 Whenever the local situation allows, the zero adjustment and the full scale can be set using the push-button feature and the appropriate menu selection. In most cases it is possible to do a one point calibration1 by using the push-buttons to input the actual level in %.
Interconnection mmmmm Upper and Lower Threshold, (menus 13 and 14) and the accompanied delays (menus 15 and 16). Initially the solid-state output is disabled for both signal output and fault/failure output (menu 17). When the solid-state switch is to be operated as fault/failure output (for example, for a separate shutdown system), we recommend disabling the operation for signal output (select Disabled Mode in menu 17 on page 70). There is no delay in the operation for fault/failure output.
Setting Description "customer input data via HART" SENSOR SERIAL NUMBER "customer input data via HART" FINAL ASSEMBLY NUMBER "customer input data via HART" UNDEFINED TV1 LRV 0 [switch position (0)E, TV1] TV! URV 1.0 [switch position (0)F, TV1] • • The Upper Sensor Limit (USL) and Lower Sensor Limit (LSL) are set to 3300 and 1.
The SITRANS LC 500 User Interface The SITRANS LC 500 user interface consists of the display (LCD), the rotary switch, and two push-buttons. The rotary switch enables you to select a particular item and/or variable for read-out and/or adjustment: the push-buttons allow you to select and/or alter a read-out or a value.
How to access the data: Access data in the transmitter from 28 menu items divided between two menu levels: 00 to 0F and 10 to 1F. Use the rotary switch and push-buttons in combination to select an item and adjust the value. The functions of each menu item are illustrated in application examples on page 93 to 94. Details on using each menu item are given in Appendix A: Menu Groups on page 54.
The rotary switch B CD User Interface 345 mmmmm 0 12 67 EF 89 A The rotary switch gives you access first to the menu level and then to the menu item. The rotary switch has a small slot where the current position can be read. The positions are read clockwise, and in increasing order: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. The position wraps from F to 0. The switch can be turned in either direction.
Transmitter Variables • • Transmitter Variable 0 (TV0) is the capacitance as measured by the device. Transmitter Variable 1 (TV1) is a computed variable: the dynamic value is a computed derivative from the range settings for TV0.
Start-up: SITRANS LC 500 Capacitance measurement systems require the instrument to be calibrated for a particular application. Two methods of calibration are available: • • push-button (for instructions, see page 43). HART (for instructions, see page 46). Quick Start We strongly recommend you read the full manual to use your device to its fullest potential.
Step TVmax Lowest to TV0 PV Memory Read-out Set Menu Level 10 to 1F ShowMenu Level Down KeyBLUE (–) Both Keys PV Units * Default Both Keys * Show Menu Level * Invert Signalling Status * do it FAC (factory settings) Up KeyRED (+) Set Menu Down Level KeyBLUE (–) 10 to 1F FAC (factory settings) Factory Settings * FAC (factory settings) Fault code Display check Numerical TVO Seconds 4 % 5 % 6 Delay Time Delay Time Delay Time Delay Time 00 00 Toggle Delay Time 00 < - > 100
Menu levels 0 and 1 Menu level 00 to 0F is the default start-up setting after power is applied or after a reset. Menu Level 10 through 1F is flagged in the LCD by an left-arrow indicator in the upper left corner of the LCD. To change from menu 00 to menu 10: 1. Set the rotary switch to 0. 2. Press and hold the BLUE (–) button. 3.
Calibration using push-button adjustment Notes: • • • To toggle between menu level 0 and menu level 1, set rotary switch to 0, and use RED (+) or BLUE (–) push-button to select menu. To reset values to factory settings, select menu 12. Press and hold both buttons: the LCD displays do it, followed by FAC A when the buttons are released. For a complete list of menu items, see Appendix A: Menu Groups, page 54.
Method 2. Set value for 100% (URV): values must be displayed as percent (at menu 01, Pv = P) a. b. c. d. Calculate the percentage value of the current level. Set rotary switch to 1, and press both buttons to adjust the value to P. Set the rotary switch to F (Full). Press the RED (+) or BLUE (–) button to increase or decrease the reading on the LCD until it matches the known (actual) percentage. The push-buttons appear to work in reverse for this function1.
Select capacitance or percent mode for dynamic primary variable (PV): menu 01 a. To see the value displayed as percent, select menu 01 and press both buttons to set Pv = P. b. To see the value displayed as pF, select menu 01 and increase or decrease the value till Pv = 0. The SITRANS LC 500 is now ready to operate. For a table showing the different functions available, and the combinations of switch position and button presses used to carry out these functions, see page 41.
Calibration using HART The SITRANS LC 500 transmitter can be calibrated using HART, with a HART communicator1; a laptop running Simatic PDM, or with the Host system (DCS). The local circumstances determine the manner in which calibration takes place. If the circumstances allow the product to be brought to the 0% and 100% point level, calibration is simple. Notes: • • Use the arrow keys, up, down, forward and back, to navigate within the menus. Use the back arrow to return to previous screens.
Example 2 For situations where the capacitance values are known in advance. 1. Switch on the 275 and establish connection with the SITRANS LC 500. a. b. c. d. e. f. 2. Select: Select: Select: Select: Select: Select: Enter required capacitance value for 0% of the range. a. Select: 3. Online Device setup Diag service Calibration Enter values PV LRV PV URV Enter required capacitance value for 100% of the range. a. Select: Send (the values are now sent) b. Select: Put loop in manual c.
The capacitance value for a 17% change in level is 17 * 2.08 = 35.37 pF. The capacitance value for 0% is 52 – 35.37 = 16.62 pF (initial capacitance value). The capacitance value for 100% is (100 * 2.08) + 16.62 = 208 + 16.62 = 224.6 pF. 3. Enter the calculated values for 0% and 100%, to calibrate the SITRANS LC 500 as described in Example 2. Example 4 For situations involving the re-adjustment of the LRV where the actual value is determined to be one value but the measurement shows a different value. 1.
Number Description Return device configuration info (132) Set Variable Upper Limit (133) Set Variable Lower Limit (134) Write keylock value (135) Read keylock value (138) Write simulation time and value (139) Read simulation time and value (140) Write TV1 Units, URV and LRV (141) Read TV1 Units, URV and LRV (144) Reset Max/Min recorded PV (145) Read Max/Min recorded PV (150) Write analog signalling mode (151) Read analog signalling mode (152) Write digital signalling mode (153)
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.
f. The coaxial connector is free of dirt or deposits. g. No cables or wires are jammed under the cover. 2. Functional Checks a. Check for required minimum terminal voltage (see page 23 for supply voltage requirements). b. Confirm that Menu 08 is set to enable analog fault signalling: display should read F: Hi or F: Lo. (If there is a fault condition, it will read F= Hi or F= Lo, when buttons are released.) c. Check that the current goes to the alarm position (3.
Troubleshooting: SITRANS LC 500 If you are unable to change settings: • • check that keylock level (menu 1F) is set to 0: the display should read PL = 0 check that menu 01 is set appropriately: if Pv = 1, changes can only be made via HART If you can change settings: • reset menu 12 to factory settings: press both buttons, and the display should read FAC A If the LCD displays a negative reading, typically around minus 300 pF, this often indicates a short circuit in the probe assembly: check the enclosure
Error Messages and Error Codes Error Messages (push-button operation) Error Message Description Cause Flta Fault/failure has been detected • Device is faulty • Possible short circuit in the probe or the device wiring • Possible fault in the device, or lack of sufficient energy at the device terminals ooLa Output out-of-limits The product level has risen above the Upper Sensor LImit, or fallen below the Lower Sensor Limit a. Alternates with the primary variable (PV).
Appendix A mmmmm Appendix A: Menu Groups The data in the transmitter is accessible as 281 menu items divided between two menu levels: 00 to 0F and 10 to 1F. You can switch between the two levels at position 00 and 10. The menu items are grouped according to function, with a detailed description of each item. The menu groups are shown below.
Menu Items • • • Check that you are at the correct menu level before selecting a menu item. Hold the RED or BLUE buttons for longer than the preset delay, or debounce time to change a setting: this debounce time is generally around a second, but varies from one menu item to another. Protection is set at keylock level, menu 1F: make sure the setting is appropriate. The transmitter variable, units as pF, units user-defined, or values as percent, is set at menu 01; make sure the setting is appropriate.
Appendix A mmmmm Damping Damping slows the measurement response to a change in level, and is used to stabilize the reading1. The Damping Value is not in seconds but is a factor that controls the rate of change for the dynamic value of the TV currently selected. The increment/decrement step size is subject to the setting on Menu 09. Rotary Menu Affected Left Switch Item by: Arrow Position 0A 01, 09 A Off Description Values Damping Range: 1 to 10,000 Factory setting 1.00 1.
Upper Sensor Limit The increment/decrement step size is subject to the setting from Menu 09. Rotary Menu Affected Switch Item by: Position Left Arrow Description 0C Off 01, 09 C Values Upper Sensor Limit 3300 to 0 Factory setting 3300 1. Set the rotary switch to C. 2. Press the RED (+) or BLUE (–) button to increase or decrease this value. or: Press and hold a button to start a repeat function. or: Press and hold both buttons simultaneously to take the current PV reading as the new setting.
Appendix A mmmmm The transmitter variable on which this selection is based is chosen in Menu 01. The increment/decrement step size is set at Menu 09. Menu Affected Item by: 0D 01, 07, 09 Rotary Left Switch Arrow Position D Mode Description Values 2-state Delta Range Setting Span (enabled) setting Off Analog Display shows ---- * Lower Range Value Lower Range Value (LRV) is the setting for 0% of the operating range, in most cases an empty vessel/tank.
Upper Range Value Menu Affected Item by: 0F 01, 09, 0B, 0C Rotary Left Switch Arrow Position F Off Mode Description Analog Values Upper Range Value Range: 3300 to 0 Factory setting Probe capacitance in water Display percent Display shows ---- 1. Set the rotary switch to F. 2. Press and hold both buttons simultaneously to take the current PV reading as the new setting. or: Press the RED (+) or BLUE(–) button to step this value up or down.
Appendix A mmmmm (SIM) function has been selected via HART, the LCD alternately displays the text SIM or the applied simulation value for the duration of the simulation. Rotary Menu Affected Left Switch Description Item by: Arrow Position 00 10 01 0 Off On Values Dynamic Value (PV) Units or % of range, selected in menu 01 To change from menu 10 to menu 00: 1. Set the rotary switch to 0. 2. Press the RED (+) button for about a second.
1. Set the rotary switch to 1. The LCD displays Pv = 0, 1, or P. 2. Press the RED (+) or BLUE (–) button to select a higher or lower value. 3. Press both buttons to select Pv = P. When PV is set to 1, settings cannot be changed using push-button adjustment. Many settings cannot be changed using push-button calibration when PV = P. If PV = 0, TV0 is selected for PV, URV, LRV, USL, LSL, Damping, and Highest/Lowest recorded value. The units are implicitly1 pF.
Appendix A mmmmm Analog Output Signalling (proportional or 2-state): menu level 0 Analog mode (the loop-current) can provide either: • a 4 to 20 / 20 to 4 mA output proportional to the percent of the range or • a 4 or 20 / 20 or 4 mA output, when 2-state mode is selected Note: To set values for Upper and Lower Threshold Delay, and Upper and Lower Threshold Setting (2-state mode), the loop-current menu (07) must be in 2-state mode.
Rotary Menu Affected Left Switch Mode Item by: Arrow Position Added Description Values Indicator 07 4 Off Analog Display shows ---- * 1. Set the loop-current control (Menu 07) to 2-state mode. 2. Set the rotary switch to 4. 3. Press the RED (+) or BLUE(–) buttons to increase or decrease the value. or: Press and hold a button to start a repeat function. or: Press and hold both buttons simultaneously to toggle the value between minimum (0) and maximum (100).
Appendix A mmmmm Lower Threshold Setting (2-state mode) The Lower Threshold Setting is the % of range below which the probe is considered uncovered. In order to switch the output signal, the corresponding delay time has to be met (Menu 04). The loop-current control (Menu 07) must be in 2-state mode for this menu to display the Upper Threshold Setting in percent. As an extra identifier, a downward ramp is displayed to the right of the value.
Menu selections 03, 04, 05, and 06 set the criteria for delay and threshold that have to be met for a change in output signal. Description Action 07 a. b. 03, 04, 05, 06, 08 7 Off 2state Display Press both buttons simul- shows C: An taneously 2-state High Display Press RED (+) shows C: Hia 2-state Low Display Press BLUE (–) shows C: Lob While button is pressed, display reads C: Hi. When button is released, display shows 20.00 if the probe is covered, or 4.00 if it is uncovered.
Analog Fault Signalling (2-state) Appendix A mmmmm Note: • • 2-state mode must be selected at menu 07. This menu selection controls the current-loop fault/failure signal output. This signal has precedence over the settings on Menu 07. When 2-state fault signalling is enabled, in the case of a fault the mA output is 3.6 mA or 22 mA1, depending on the setting. The mA output is viewed at menu 07.
Digital Output Signalling (solid-state output): menu level 1 The Upper Threshold Delay controls the Activation delay: the amount of time that has to pass uninterrupted with the probe covered to a level above the Upper Threshold Setting before the timer expires. After the timer expires, the output signal will comply to the setting from Menu 18 for a covered probe. Whenever the level drops below the Upper Threshold Setting before the timer expires, the timer is restarted.
Appendix A mmmmm Lower Threshold Delay (solid-state output) The Lower Threshold Delay controls the Deactivation delay: the amount of time that has to pass uninterrupted with the probe covered to a level below the Lower Threshold Setting before the timer expires. After the timer expires, the output signal will comply to the setting from Menu 18 for an uncovered probe. Whenever the level rises above the Lower Threshold Setting before the timer expires, the timer is restarted.
17 5 On DesValues cription Upper Upward % of ramp at right Threshold range Setting of value Solid-state switch con- * trol disabled Display shows ---- First select the solid-state switch output at menu 17 (contact open or contact closed). 1. Set the rotary switch to 5. 2. Press the RED (+) or BLUE (–) button to increase or decrease the value. or: Press and hold a button for a prolonged time start a repeat function.
Digital Signalling Mode (solid-state output) Appendix A mmmmm Note: Menu 18 has precedence over menu 17. Controls the solid-state switch output and allows you to set the switch to contact open or contact closed. The settings are relative to a covered probe, and the criteria are set in menu 15 and 16. With contact closed, the switch is on: with contact open the switch is off. While a button is pressed, the LCD displays S: cc1 (contact closed) or S: co (contact open).
Digital Fault Signalling Note: This signal has precedence over the settings on Menu 17. Example: F = cc is selected (contact closed when fault is detected) • If a fault condition exists when the button is released, the display changes from F: cc to F = cc. • If no fault condition exists when the button is released, the display shows F: cc. • If you press either button briefly, the LCD displays the current setting, in this case, F: cc.
Miscellaneous Appendix A mmmmm Output Signal Processing Test Displays the Fault/Failure information. If operation is normal, two test displays alternate, which light up all the LCD segments in a cycle. If there is a fault or failure, an error code is displayed. See the detailed list of error codes and their meanings, page 53. Rotary Menu Switch Left Arrow Item Position Description 11 Output Signal Processing Test 1 On Set the rotary switch to 1.
Range Inversion Description 19 Range Inversion 9 On Mode Values normal * inverted Display shows nor Display shows inv 1. Set the rotary switch to 9. 2. Press both buttons simultaneously for more than one second to toggle between the two modes, effectively switching the values for LRV and URV. Keylock Level Controls the access protection level for the device. The factory setting is a local protection level of 0, which places no restriction on modifying settings locally.
Appendix B: LCD display examples LCD: alphanumeric display examples Current-loop, output in Analog (proportional) mode: Menu Item Indicator: M 00 Menu Level Indicator: An Indicator for range operation, normal (URV > LRV): SEL 1 Appendix B mmmmm Internal diagnostics detects anomaly: FLt Solid-state switch output closed when probe is covered (displayed while button pressed): nor Indicator for range operation, inverted (URV < LRV): inv Output out of limits, PV outside Variable Limits: ooL S: oc Soli
Appendix C: HART Documentation HART1 Communications for the SITRANS LC 500 Highway Addressable Remote Transducer (HART) is an industrial protocol that rides on top of a 4-20 mA signal. It is an open standard, and full details about HART can be obtained from the HART Communication Foundation at www.hartcomm.org The SITRANS LC 500 can be configured over the HART network using either the HART Communicator 275 by Fisher-Rosemount, or a software package.
SITRANS LC 500 DD Menu/Variable Organization Root Menu Device setup menu PV digital value PV upper range value PV lower range value SV digital value SV upper range value SV lower range value Device Setup Menu Process variables menu Diagnostics/service Basic setup menu Detailed setup menu Autocal Review menu Process Variables Sensor digital value Input percent range A0 analog value PV maximum recorded PV minimum recorded Reset max/min records Diagnostics/service Self test Loop test Calibration Dac trim Ap
HART Response Code Information Additional response code information, Second Byte. Bit #7: Field Device Malfunction When the transmitter detects a malfunction, the Analog Output will be set in a fault state. Bit #6: Configuration Changed When any of the settings in EEROM is changed either by a write command or by manual ZERO or SPAN adjust, this bit is set. Use command 38 to reset.
HART Conformance and Command Class SITRANS LC 500 transmitter Conformance and Command Class summary.
Command Number Description 128 Set Alarm Select 129 Adjust for Product Build-up on Sensor 130 Read Failsafe Mode selection 131 Return Device Config. Info. 132 Write Variable Upper/Lower Limit Values 133 Read Variable Upper/Lower Limit Values 134 Write Keylock Value 135 Read Keylock Value 138 Write Simulation Timer and Value 139 Read Simulation Timer and Value 140 Write S.V. Units and Range Values 141 Read S.V. Unites and Range Values 144 Reset recorded PV min./max.
MultiDrop operation The SITRANS LC 500 transmitter supports MultiDrop Operation. Burst mode The SITRANS LC 500 transmitter does not support Burst Mode. Units conversions The Transmitter Variable #0 Units are in pF and cannot be changed. The Transmitter Variable #1 Values may be set to any Units and Value with Command #140. The Transmitter Variable Range Values may be read at any time with Command #141. The value returned as Secondary Variable (S.V.
TV0 range block TV1 range block damping block TV1 Fault damping block TV0 Fault max/min recorded value TV select (menu 01) max/min recorded value SITRANS LC 500 Block Diagram sensor pF Fault sensor circuit cal low Lower Threshold (menu 16) Upper Threshold (menu15) Lower Threshold (menu 06) Upper Threshold (menu 05) reset reset reset reset status 2-state status 2-state Digital Signalling Mode (menu 17) Digital Fault/Failure (menu 18) Delay (menu 14) Delay (menu 13) Delay (menu 04
Correlation Table: 0% - 100% to 4-20 mA or 20-4 mA Current in mA Range 100 - 0 % 0 4.0 100 5 4.8 95 10 5.6 90 15 6.4 85 20 7.2 80 25 8.0 75 30 8.8 70 35 9.6 65 40 10.4 60 45 11.2 55 50 12.0 50 55 12.8 45 60 13.6 40 65 14.4 35 70 15.2 30 75 16.0 25 80 16.8 20 85 17.6 15 90 18.4 10 95 19.2 5 100 20.
Appendix E: SITRANS LC 500, alternate versions and application details Standard Version Standard Version S-Series, Threaded Note: All measurements are given in millimeters/inches. S-Series: Threaded ø160 (6.3”) Insertion Length +175 (6.9”) Active Shield Insertion Length Active Length Probe Seal (inactive) 40 (1.57”) ø16 (0.63”) or ø24 (0.
Standard Version S-Series, Threaded Note: All measurements are given in millimeters/inches. S-Series Cable Version (with weight) S-Series Cable Version (with anchor) ø160 (6.3”) Transmitter Enclosure 120 (4.72”) Seal Gland 55 (2.17”) Threaded Process Connector Insertion Length +175 (6.9”) See Order Instructions PFA Insulation Insertion Length Insertion Length ø9 (0.35”) 125 (4.
Standard Version S-Series, Welded and Machined Flanged Versions Note: All measurements are given in millimeters/inches. S-Series, Welded Flange S-Series, Machined Flange Insertion Length +185 (7.28”) TIG Weld Insertion Length +185 (7.28”) Active Shield Active Shield Insertion Length Insertion Length Active Length Active Length Probe Seal (inactive) Probe Seal (inactive) 40 (1.57”) 40 (1.57”) ø16 (0.63”) ø16 (0.63”) or ø24 (0.94”) or ø24 (0.
Standard Version D-Series, Machined Flange Note: All measurements are given in millimeters/inches. D-Series DD-Series ø160 (6.3”) ø160 (6.3”) Transmitter Enclosure Transmitter Enclosure 120 (4.72”) 120 (4.72”) 65 (2.56”) Seal Gland Seal Gland n holes Flange Process 120 (4.72”) Connection n holes Flange Process Connection øk øD Active Shield PTFE Lining Active Shield øk øD PTFE Lining Insertion Length Probe Active Length 40 (1.
Note: All measurements are given in millimeters/inches. SD-Series Probe/Thermal Isolator ø160 (6.3”) ø160 (6.3”) Transmitter Enclosure 120 (4.72”) 120 (4.72”) Seal Gland n holes 120 (4.72”) Active Shield Insertion Length Transmitter Enclosure Insertion Length Probe Active Length Probe Seal Probe Seal 40 (1.57”) 40 (1.57”) ø16 (0.63”) or ø24 (0.94”) ø16 (0.63”) or ø24 (0.
Interface Version Designed specifically for interface level where a long distance active shield portion of the electrode is required (up to 35 meters) before the measurement portion of the electrode begins. Common in large storage tanks for oil where the bottom of the tank invariably has a layer of water below the oil. Often, when measurement spans as much as 5.5 meters (for the water), up to 35 meters of flexible bellows cable are used.
Sanitary Version The hygienic design includes threaded and tri-clamp versions for use in the food and pharmaceutical industry. Sanitary Versions, threaded and tri-clamp Note: All measurements are given in millimeters/inches. Sanitary Thread Coupling Sanitary Tri-Clamp ø160 (6.3”) Transmitter Enclosure 118 (4.65”) Seal Gland Seal Gland Tri-clamp Connection IDF Nut Active Shield Active Shield Insertion Length Insertion Length + 175 (6.9”) Insertion Length Probe Active Length 40 (1.
Flanges øL b øK (n holes) øD Flange Standards All measurements are given in mm One (1) inch = 25.4 mm For details, see drawings, technical data, and measuring probe details on pages 83 to 89.
Applications Examples Generic Application Calculations The capacitance expected in a cylindrical tank with a probe centrally mounted is estimated using the following formula: 7.
After calibration: 12.7 pF ≅ 0% ≅ 4 mA or 20 mA 25.4 pF ≅ 100% ≅ 20 mA or 4 mA Larger tank, dimensions in feet: C air = ε C oil = ε 7.32 × 4.5 ----------------------------------pF = 16.6pF air Log ( 60 ⁄ 0.63 ) SITRANS LC 500 6” (0.5ft) 7.32 × 4.5 ----------------------------------pF = 33.2pF oil Log ( 60 ⁄ 0.63 ) For this slightly larger tank, the capacitance ranges from 16.6 pF for 0% (probe in air) to 33.2 pF for 100% (tank filled with oil). L = 54” (4.5ft) d = 0.63” After calibration: 60” (5.
Application: level indicator and solid-state switch output The loop current provides: • a reading proportional to level, within the 0 - 100% range, at menu 00 or 10 on the device, or at a remote indicator • an out-of-range signal ooL alternating with PV if the level is above URV or below LRV The solid-state switch is activated at Upper Threshold Setting and deactivated at Lower Threshold Setting. In the diagram below, it is used to activate a pump via an auxiliary power circuit.
Application: Analog fault signalling (2-state output) In 2-state mode, the loop current signals whether the probe is covered or uncovered, and the continuous level measurement is unavailable. 2-state mode provides: • a 4 mA or 20 mA output to menu 07, when the level reaches one of the threshold settings • a 3.6 or 22 mA output to menu 07 (if 2-state fault signalling is enabled at menu 08) when the process level exceeds one of the limit settings (menu 0B and 0C).
USL is set to 83.50 pF Menu 0C reads 83.50 LSL is set to 7.3 pF Menu 0B reads 7.30 When the process level reaches 90%, the probe is considered covered and the output will be 20 mA. If the level exceeds USL, the output will be 22 mA. When the process level drops to 8%, the probe is considered uncovered, and the output will switch to 4 mA. If the level drops below LSL, the fault signal will be 22 mA.
Appendix F mmmmm Appendix F: Approvals CE Certificate WRITTEN We, DECLARATION OF CONFORMITY Siemens Milltronics Process Instruments B.V.
Appendix F approvals.fm Page 97 Tuesday, January 28, 2003 10:48 AM CE Bescheinigung Siemens Milltronics Process Instruments B.V. Nikkelstraat 10 - 4823 AB BREDA - Niederlande Wir erklären hiermit auf eigene Verantwortung, dass der Kapazitive Füllstand- Durchfluss- und Grenzstandschalter SITRANS LC 500 / Pointek CLS 500 welcher Gegenstand dieser Erklärung ist, mit den folgenden Normen und/oder Regelwerken übereinstimmt: Anforderung Bemerkungen Zertifizierungs-Nr.
Appendix F mmmmm Instrument label: SITRANS LC 500 Page 98 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
KEMA certificate and schedules SITRANS LC 500 – INSTRUCTION MANUAL Page 99 mmmmm Appendix F 7ML19985GE01
mmmmm Appendix F Page 100 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
SITRANS LC 500 – INSTRUCTION MANUAL Page 101 mmmmm Appendix F 7ML19985GE01
mmmmm Appendix F Page 102 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
SITRANS LC 500 – INSTRUCTION MANUAL Page 103 mmmmm Appendix F 7ML19985GE01
mmmmm Appendix F Page 104 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
SITRANS LC 500 – INSTRUCTION MANUAL Page 105 mmmmm Appendix F 7ML19985GE01
mmmmm Appendix F Page 106 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
Certificates and Approvals Specifications current loop insulated from the measuring circuit 3.6-22 mA internal capacitance can be ignored internal inductance 10 µH maximum supply voltage 30 Vdc maximum current 200 mA maximum power consumption 1.5 W The SITRANS LC 500 can be directly connected to an intrinsically safe supply for intrinsically safe applications. For non-intrinsically safe operations, such as explosion proof, a safety barrier must be used.
Hazardous (Classified) Location Page 108 SITRANS LC 500 – INSTRUCTION MANUAL MERCAP/FTF MERCAP/N External earth terminal CPU Installation must be in accordance with the National Electrical Code (R) (NFPA 70, Article 504) and ANSI/ISA-RP12.6 MERCAP/FTS MERCAP 500 / POINTEK CLS500 UNIT MERCAP/F MERCAP/2 Temperature class T4 for class I, Div. 1 applications -40°C < ambient temperature < +85°C Merflame enclosure Current loop output solid state output Class I, Div.
Glossary capacitance: the property of a system of conductors and dielectrics that permits the storage of electricity when potential differences exist between the conductors. Its value is expressed as the ratio of a quantity of electricity to a potential difference, and the unit is a Farad. capacitor: a device in a circuit that has the potential to store an electric charge. Typically a capacitor has 2 conductors or electrodes separated by a layer of a nonconducting material called a dielectric.
Glossary mmmmm Notes Page 110 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01
Index factory settings restoring 72 values 34 Flange Standards 90 flanges sizes 90 A Abbreviations and Identifications list 3 analog fault signalling application example 94 application example 2-state output 94 analog fault signalling 94 level indicator 93 Approvals and Certificates details 107 C cable requirements 24 calibration instructions 40 capacitance generic calculation examples 91 oil-filled vessel 91 cathodically protected metal tanks system grounding example 29 Certificates and Approvals detai
Index mmmmm non-conductive tanks system grounding example 29 non-volatile memory data storage 79 voltage requirements 23 system grounding referencing 28 O T one point calibration 33 operating principles 8 test function details 50 transmitter damping 79 operating principles 8 specifications 4 transmitter variable selection 43 P PDM Simatic Process Device Manager 75 power supply requirements 23 pressure and temperature considerations 18 probe electrode characteristics 16 electrode specifications 6 pr
Quick Reference: SITRANS LC 500 Notes: • • • Change over from Menu LEVEL 0 to Menu LEVEL 1 is only possible at position 0, from menu item 00 to 10 or vice-versa. (See page 42 for detailed instructions.) For a table showing all the combinations of rotary switch positions and button presses used to carry out different functions, see next page. For a detailed description of each menu item, see Appendix A: Menu Groups, page 54.
Step TVmax Lowest to TV0 PV Memory Read-out Set Menu Level 10 to 1F ShowMenu Level Down KeyBLUE (–) Both Keys PV Units * Default Both Keys * Show Menu Level * Invert Signalling Status * do it FAC (factory settings) Up KeyRED (+) Set Menu Down Level KeyBLUE (–) 10 to 1F FAC (factory settings) Factory Settings * FAC (factory settings) Fault code Display check Numerical TVO Seconds 4 % 5 % 6 Delay Time Delay Time Delay Time Delay Time 00 00 Toggle Delay Time 00 < - > 100
IQ300IX.
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