8 Parameter reference Note • Parameter names and menu structure are almost identical for SIMATIC PDM and the local user interface (LUI). • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. • Mode toggles between PROGRAM and Measurement Modes. • For Quick Access to parameters via the handheld programmer, press Home enter the menu number, for example: 2.2.1. • In Navigation mode, ARROW keys ( , then ) navigate the menu in the direction of the arrow.
Parameter reference Language (1.1.) Material (1.2.) Response Rate (1.3.) Units (1.4.) Operating Mode (1.5.) Low Calibration Point (1.6.) High Calibration Point (1.7.) Apply? (Apply changes) (1.8.
Parameter reference Setup (2.) Note • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. • Values shown in the following tables can be entered via the handheld programmer. Identification (2.1.) Tag (2.1.1.) Note SITRANS PDM limits the TAG field to a maximum of 24 characters. Text that can be used in any way. A recommended use is as a unique label for a field device in a plant. Limited to 32 ASCII characters. Descriptor (2.1.2.
Parameter reference Loader Revision (2.2.3.) Read only. Corresponds to the software used to update the Field Device. Order Option (2.2.4.) Read only. Displays the device type. Sensor (2.3.) Unit (2.3.1) Sensor measurement unit. Values m, cm, mm, ft, in Default: m Level Unit (2.3.2.) Select engineering units for Level.
Parameter reference PV Units (volume/level) (2.3.3.) Note • A greater selection of volume units is available via SIMATIC PDM. • Default unit of AIFB1 or 2 is percent. • You can select a different unit for your application. • PV (Primary Value): the output from the Level Transducer Block. See Transducer Block function groups (Page 222) and How the Transducer Block works (Page 223) for more details. Select units for either volume or level.
Parameter reference LOE Timer (2.3.6.) Note When a Loss of Echo occurs Value (2.6.9.2.) determines the material level to be reported when LOE Timer expires. See Loss of Echo (LOE) (Page 210) for more detail. Sets the time to elapse since the last valid reading, before the Fail-safe material level is reported. Values Range: 0 to 720 seconds Default: 100 s Calibration (2.3.7) Note We recommend using the Quick Start wizard to configure the device.
Parameter reference Low Calibration Pt. (2.3.7.1.) Distance from sensor reference point to Low Calibration Point (corresponding to Low Level Point). Units are defined in Unit (2.3.1.). ① ② ③ ④ ⑤ High level point (default: 100%) Low level point (default: 0%) Sensor value High calibration point ⑥ ⑦ ⑧ ⑨ Level offset (if used) Low calibration point a) Sensor reference point Far range Level Sensor reference point is the point from which level measurement is referenced.
Parameter reference Sensor Offset (2.3.7.3.) A constant offset that can be added to or subtracted from the sensor value to compensate for a shifted sensor reference point. (For example, when adding a thicker gasket or reducing the standoff/nozzle height.) Sensor value is the value produced by the echo processing which represents the distance from sensor reference point to the target. (see Calibration (2.3.7.) for an illustration).The units are defined in Unit (2.3.1.). Values Range: -99.999 to 99.999.
Parameter reference Rate (2.3.8.) Note Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. Response Rate (2.3.8.1.) Note Changing Response Rate resets Fill Rate (2.3.8.2), Empty rate (2.3.8.3), and Filter Time Constant (2.6.8.1.). Sets the reaction speed of the device to measurement changes. Response Rate (2.3.8.1.) Fill Rate (2.3.8.2.) Empty rate (2.3.8.3.) Filter Time Constant (2.6.8.1.) * Slow 0.1 m/min (0.32 ft/min) 10 s Medium 1.0 m/min (3.
Parameter reference Empty Rate (2.3.8.3) Defines the maximum rate at which the reported sensor value is allowed to increase. Adjusts the SITRANS LR250 response to increases in the actual material level. Empty Rate is automatically updated whenever Response Rate (2.3.8.1.) is altered. Options Range: 0 to 999999 m / min. Response Rate (2.3.8.1.) * Empty Rate Slow 0.1 m/min (0.32 ft/min) Medium 1.0 m/min (3.28 ft/min) Fast 10.0 m/min (32.8 ft/min) Altered by: Response Rate (2.3.8.
Parameter reference Vessel Shape (2.4.1.1.) Defines the vessel shape and allows the LR250 to calculate volume instead of level. If None is selected, no volume conversion is performed. Select the vessel shape matching the monitored vessel or reservoir.
Parameter reference Vessel Shape a) LCD DISPLAY/ Description Also required HALF SPHERE BOT/ Half-sphere bottom Maximum volume, dimension A FLAT SLOPED BOT/ Flat sloped bottom Maximum volume, dimension A PARABOLIC ENDS/ Parabolic end horizontal cylinder Maximum volume, dimension A, dimension L LINEAR TABLE a) / Linearization table (level/volume breakpoints) Maximum volume, tables 1-32 level and volume breakpoints Linearization Table must be selected in order for level/volume values [see XY index (
Parameter reference Maximum Volume (2.4.1.2.) The maximum volume of the vessel. Units are defined in PV Units (volume/ level) (2.3.3.). Enter the vessel volume corresponding to High Calibration Point. The volume calculation is based on the maximum volume and scaled according to the vessel shape selected. If no vessel shape is entered, the default is 100, and the reading will be a percentage value. Values Range: 0.0000 to 999999 Default: 100.0 Related Parameters Low Calibration Pt. (2.3.7.1.
Parameter reference XY index (2.4.1.5.) Level/Volume breakpoints allow you to define a complex vessel shape as a series of segments. A value is assigned to each level breakpoint and a corresponding value is assigned to each volume breakpoint. Volume values are defined in volume units and can be percent or volumetric; level values are defined in level units, and can be percent or linear. See Level Unit (2.3.2.) and PV Units (volume/level) (2.3.3.). Level values Range: -999999.00 to 999999.
Parameter reference Entering breakpoints via the hand-held programmer: 1. The default for level values is percent: if you want to select units instead, navigate to Setup (2.) > Sensor (2.3.) > Level Unit (2.3.2.), and select the desired unit. 2. Navigate to Setup (2.) > Sensor (2.3.) > PV Units (volume/level) (2.3.3.), and select the desired volume units. 3. Go to XY index (2.4.1.5.) and enter the number of the breakpoint you wish to adjust: for example, for breakpoint 1 enter 1. 4. Go to X value (2.4.1.6.
Parameter reference Signal Processing (2.5.) Note Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. Near Range (2.5.1.) The range in front of the device (measured from the sensor reference point) within which any echoes will be ignored. (This is sometimes referred to as blanking or a dead zone.) The factory setting is 50 mm (2") past the end of the antenna, and the default is dependent on the antenna type and process connection.
Parameter reference Propogation Factor (2.5.3.) Note • When operating in a stillpipe, values for CLEF Range (2.5.7.4.), and for the propagation factor, should be set according to the pipe size. See the table below. • For reliable results, the antenna size must be close to the pipe size. Compensates for the change in microwave velocity due to propagation within a metal stillpipe instead of in free space. Values Range: 0.3 to 1.0 depending on pipe size. Default: 1.0000 Nominal Pipe Sizea) 40 mm (1.
Parameter reference Minimum Sensor Value (2.5.4.) The minimum recorded Sensor value in units defined in Unit (2.3.1.). 1. Open the menu View – Device Diagnostics, select Device Status, and click on the Device Status tab. 2. Check Sensor Peak Values. Maximum Sensor Value (2.5.5.) The maximum recorded Sensor value in units defined in Unit (2.3.1.). 1. Open the menu View – Device Diagnostics, select Device Status, and click on the Device Status tab. 2. Check Sensor Peak Values. Shots (2.5.6.
Parameter reference Position Detect (2.5.7.2.) Note If a stillpipe is used, the setting for CLEF range is determined by the horn size: see CLEF Range (2.5.7.4.) for a table of values. Defines where on the echo the distance measurement is determined. Options Center * Hybrid (Center and CLEF) CLEF (Constrained Leading Edge Fit) Related parameters CLEF Range (2.5.7.4.
Parameter reference CLEF Range (2.5.7.4.) Note CLEF Range is referenced from Low Calibration Point (process empty level). The CLEF algorithm is used mainly to allow correct level reporting for low dK materials which may otherwise cause an incorrect reading in an empty or almost empty vessel. It is used from Low Calibration Point (process empty level ) up to the level defined by CLEF Range (see illustration below). Above that point the Center algorithm is used. For more detail see CLEF Range (Page 206).
Parameter reference Echo Lock (2.5.8.1.) Note Ensure the agitator is always running while SITRANS LR250 is monitoring the vessel, to avoid stationary blade detection. Selects the measurement verification process. See Echo Lock (2.5.8.1.) for more details. Options Lock Off (no verification) Maximum Verification (not recommended for radar) * Material Agitator Total Lock (not recommended for radar) Related parameters Fill Rate (2.3.8.2.) Empty rate (2.3.8.3.) Sampling up (2.5.8.2.) Sampling down (2.5.8.3.
Parameter reference Echo Quality (2.5.9.) Confidence (2.5.9.1.) Indicates echo reliability: higher values represent better echo quality. The display shows the echo confidence of the last measurement. Echo Threshold (2.5.7.3.) defines the minimum criterion for echo confidence. Values (view only) 0 to 99 ---- Related Parameters Shot not used Echo Threshold (2.5.7.3.) Open the menu Device – Echo Profile Utilities and click on the tab Echo Profile. Echo Strength (2.5.9.2.
Parameter reference Auto False Echo Suppression (2.5.10.1.) Used together with Auto False Echo Suppression Range (2.5.10.2.) to screen out false echoes in a vessel with known obstructions. A ’learned TVT’ (time varying threshold) replaces the default TVT over a specified range. See Auto False Echo Suppression (Page 202) for a more detailed explanation. Note • Make sure material level is below all known obstructions when Auto False Echo Suppression is used to learn the echo profile.
Parameter reference After Auto False Echo Suppression ① false echo ④ ② learned TVT ⑤ ③ Auto False Echo Suppression ⑥ Range material level default TVT echo marker To set Auto False Echo Suppression via SIMATIC PDM: Open the menu Device – Echo Profile Utilities and click on the tab Auto False Echo Suppression. For more detailed instructions see Auto False Echo Suppression via SIMATIC PDM (Page 207).
Parameter reference To set Auto False Echo Suppression via the handheld programmer: Options * OFF Default TVT will be used. ON ’Learned’ TVT will be used. LEARN ’Learn’ the TVT. 1. Determine Auto False Echo Suppression Range. Measure the actual distance from the sensor reference point to the material surface using a rope or tape measure. 2. Subtract 0.5 m (20") from this distance, and use the resulting value. 3. Go to Auto False Echo Suppression Range (2.5.10.2.
Parameter reference Shaper Mode (2.5.10.4.) Enables/disables TVT shaper (2.5.11.) Options ON * OFF TVT shaper (2.5.11.) Note • The range is –50 to 50 dB. • Shaper Mode (2.5.10.4.) must be turned ON in order for TVT shaper points to be transferred. Adjusts the TVT (Time Varying Threshold) at a specified range (breakpoint on the TVT). This allows you to reshape the TVT to avoid unwanted echoes. There are 40 breakpoints arranged in 5 groups. (We recommend using SIMATIC PDM to access this feature.
Parameter reference Breakpoint 10-18 (2.5.11.2.) Values Range: –50 to 50 dB Default: 0 dB Breakpoint 19-27 (2.5.11.3.) Values Range: –50 to 50 dB Default: 0 dB Breakpoint 28-36 (2.5.11.4.) Values Range: –50 to 50 dB Default: 0 dB Breakpoint 37-40 (2.5.11.5.) Values Range: –50 to 50 dB Default: 0 dB AIFB1 (2.6.) Note Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. Static Revision No. (2.6.1.
Parameter reference Actual mode (2.6.2.) Used to request an operating mode from the Analog Input Function Block. Options * Auto Mode (AUTO) Manual Mode (MAN) Out of Service (O/S) Allows you to put the SITRANS LR250 into Out of Service Mode and then reset it to Auto Mode. Manual Mode is used in conjunction with Simulation. See Simulation (Page 79). It should be used only with SIMATIC PDM in order to benefit from all the features available. Channel (2.6.3.
Parameter reference Input Scaling (2.6.5.) Upper Value (2.6.5.1.) Defines the operational upper range value of the input value (Process Value Scale) in PV (volume/level) Units. Process Value Scale normalizes the input value to a customer-defined range. Values Range: -999999 to 999999 Default: 100% Provides Output values (Out) to AIFB1 or AIFB2 Lower Value (2.6.5.2.) Defines the operational lower range value of the input value (Process Value Scale) in PV (volume/level) Units.
Parameter reference Upper Value (2.6.6.1.) Defines the operational upper range value of the output value in AIFB1 units. Values Range: -999999 to 999999 Default: 100% Lower Value (2.6.6.2.) Defines the operational lower range value of the output value in AIFB1 units. Values Range: -999999 to 999999 Default: 0% Alarms and Warnings (2.6.7.) Upper Limit Alarm (2.6.7.1.) The setting for the upper alarm limit in AIFB1 units. Values Range: -999999 to 999999 Default: 999999 Upper Limit Warning (2.6.7.2.
Parameter reference Lower Limit Alarm (2.6.7.4.) The setting for the lower alarm limit in AIFB1 units. Values Range: -999999 to 999999 Default: -999999 Limit Hysteresis (2.6.7.5.) Hysteresis is used to adjust the sensitivity of the trigger for alarm messages. It is used to compensate when a process variable fluctuates around the same value as a limit. A high level alarm occurs when a value exceeds an upper limit.
Parameter reference Unit (2.6.8.2.) Note Additional units are available in SIMATIC PDM. Engineering unit to be displayed with the output value. Values m, cm, mm, ft, in, cu m, L, HL, cu in, cu ft, cu yd, gal, imp gal, bushels, Bbl, Bbl liquid, percent, PA, Follow out unit * percent Out Unit Text (2.6.8.3.) If the desired unit is not listed in Unit (2.6.8.2.) you can define it in Out Unit Text (2.6.8.3.). Decimal point (2.6.8.4.) The number of digits to display after the decimal point.
Parameter reference Value (2.6.9.2.) Note Fail-safe Mode (2.6.9.) must be set to Substitute Value before Value (2.6.9.2.) can be defined. User-defined default for the Output Value, if sensor or sensor electronic fault is detected. Units are defined in Unit (2.6.8.2.). Values Range: -999999 to 999999 Default: 0 AIFB2 (2.7.) See AIFB1 (2.6.): the parameters for AIFB2 are identical. Measured Values (2.8.) Read only. Allows you to view measured values for diagnostic purposes.
Parameter reference Diagnostics (3.) Echo Profile (3.1.) To request a profile via SIMATIC PDM: Open the menu Device – Echo Profile Utilities. [See Echo Profile Utilities via SIMATIC PDM (Page 69) for more detail.] To request a profile via the handheld programmer: ① ② ③ ④ ⑤ Echo confidence value Algorithm selection (tFirst echo) Distance value TVT curve ⑥ ⑦ ⑧ ⑨ Measure icon, deselected Exit icon, selected Measure icon, selected Exit icon, deselected Material level 1.
Parameter reference Fault Reset (3.2.
Parameter reference Condensed Status (3.4.) When Enable (3.4.1.) is enabled, you can select the level of severity of errors, and tailor a device response appropriate for your particular process. ● In Event Index (3.5.1.) you can select a particular event or error by means of its index number. ● In Event Status (3.5.2.) you can assign a status to the selected event. ● In Event Diagnosis (3.5.3.) you can assign a diagnosis to the selected event. Enable (3.4.1.
Parameter reference Event Index (3.5.1.) The numeric component of the Event Code for a Condensed Status event. Use the index number to identify a particular event in the list below.
Parameter reference Event Status (3.5.2.) Event Status allows you to assign one of the status options listed below, to any of the events listed in Event Index (3.5.1.). This allows you to tailor a device response appropriate for your particular process. (Event status affects Condensed status). See Condensed Status (Page 235) for more details.
Parameter reference Event Diagnosis (3.5.3.) Allows you to assign one of the diagnostic options listed below to any of the events listed in Event Index (3.5.1.). This allows you to tailor a device response appropriate for your particular process.(Event Diagnosis affects Condensed Acyclic Diagnostics and Cyclic Extended Diagnostics). See Condensed Mode Diagnosis (Page 239) for more detail.
Parameter reference Minimum Output Value - AIFB1 (3.6.3.) The minimum recorded Output Value from the Analog Input Function Block 1. Maximum Output Value - AIFB1 (3.6.4.) The maximum recorded Output Value from the Analog Input Function Block 1. Minimum Output Value - AIFB2 (3.6.5.) The minimum recorded Output Value from the Analog Input Function Block 2. Maximum Output Value - AIFB2 (3.6.6.) The maximum recorded Output Value from the Analog Input Function Block 2. Service (4.
Parameter reference Master Reset (4.1.) Note Following a Factory Reset, some degree of reprogramming may be required, depending on the option chosen below. Reset options Result Factory Defaults Resets all user parameters to the manufacturer’s default settings, with certain exceptions.
Parameter reference Remaining Device Lifetime (4.2.) Note • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. • Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Service/Calibration schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Sensor Lifetime (4.3.), Service Schedule (4.4.), and Calibration Schedule (4.5.).
Parameter reference To access these parameters via SIMATIC PDM: ● Open the menu Device – Maintenance and select the Remaining Device Lifetime tab. ● After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change. ● Click on Snooze to add a year to the Total Expected Device Life. Time Units Options a) Hours; days; years Default: years a) Selectable only via SIMATIC PDM. Lifetime Expected (4.2.1.) Note Note: The device always operates in years.
Parameter reference Reminder Activation (4.2.4.) Note To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Allows you to enable a maintenance reminder. Values Reminder 1 (Maintenance Required) Reminder 2 (Maintenance Demanded) Reminders 1 and 2 * OFF 1. First set the values in Reminder 1 (Required) (4.2.5.)/Reminder 2 (Demanded) (4.2.6.). 2. Select the desired Reminder Activation option. Reminder 1 (Required) (4.2.5.) If Remaining Lifetime (4.2.3.
Parameter reference Maintenance Status (4.2.7.) Indicates which level of maintenance reminder is active. In SIMATIC PDM, open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab, and check the Device Lifetime Status window. Acknowledge Status (4.2.8.) Indicates which level of maintenance reminder has been acknowledged. In SIMATIC PDM, open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab, and check the Device Lifetime Status window.
Parameter reference Remaining Sensor Lifetime (4.3.) Note • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. • Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Maintenance/Service schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Service Schedule (4.4.), and Calibration Schedule (4.5.).
Parameter reference To access these parameters via SIMATIC PDM: ● Open the menu Device – Maintenance and select the Remaining Sensor Lifetime tab. ● After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change. ● Click on Snooze to add a year to the Total Expected Sensor Life. ● Click on Sensor Replaced to restart the timer and clear any fault messages. Time Units Options a) Hours; days; years Default: years a) Selectable only via SIMATIC PDM.
Parameter reference Remaining Lifetime (4.3.3.) Read only. Lifetime Expected (4.3.1.) less Time in Operation (4.3.2.). Reminder Activation (4.3.4.) Note To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Allows you to enable a maintenance reminder. Options Reminder 1 (Maintenance Required) Reminder 2 (Maintenance Demanded) Reminders 1 and 2 * OFF 1. First set the values in Reminder 1 (Required) (4.3.5.)/Reminder 2 (Demanded) (4.3.6.). 2.
Parameter reference Maintenance Status (4.3.7.) Indicates which level of maintenance reminder is active. In SIMATIC PDM, open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab, and check the Sensor Lifetime Status window. Acknowledge Status (4.3.8.) Indicates which level of maintenance reminder has been acknowledged. In SIMATIC PDM, open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab, and check the Sensor Lifetime Status window.
Parameter reference Service Schedule (4.4.) Note • Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Service/Calibration schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Remaining Sensor Lifetime (4.3.), and Calibration Schedule (4.5.). • Performing a reset to Factory Defaults will reset all the Maintenance Schedule parameters to their factory defaults. • The device operates in years.
Parameter reference To access these parameters via SIMATIC PDM: ● Open the menu Device – Maintenance and select the Service Schedule tab. ● After modifying values/units as required, click on Write to accept the change, and Read to view the effect of the change. ● Click on Service Performed to restart the timer and clear any fault messages. Time Units Options a) Hours; days; years Default: years a) Selectable only via SIMATIC PDM.
Parameter reference Service Interval (4.4.1.) Note The device always operates in years. Changing the units affects only the parameter view of the Service Interval parameters in SIMATIC PDM. User-configurable recommended time between product inspections. Values Units a): hours, days, years Range: 0 to 20 years Default: 1.0 year a) Units are selectable only via SIMATIC PDM. Time since Last Service (4.4.2.) Time elapsed since last service. Can be reset to zero after performing a service.
Parameter reference Reminder Activation (4.4.4.) Note To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Allows you to enable a maintenance reminder. Options * Timer OFF ON - no reminders checked ON - Reminder 1 (Maintenance Required) checked ON - Reminders 1 and 2 checked ON - Reminder 2 (Maintenance Demanded) checked 1. First set the values in Reminder 1 (Required) (4.4.5.)/Reminder 2 (Demanded) (4.4.6.). 2.
Parameter reference Maintenance Status (4.4.7.) Indicates which level of maintenance reminder is active. Open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab and check the Service Schedule Status window. Acknowledge Status (4.4.8.) Indicates which level of maintenance reminder has been acknowledged. Open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab and check the Service Schedule Status window. Acknowledge (4.4.9.
Parameter reference Calibration Schedule (4.5.) Note • Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. • Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up Service/Calibration schedules, based on operating hours instead of a calendar-based schedule. See also Remaining Device Lifetime (4.2.), Remaining Sensor Lifetime (4.3.), and Service Schedule (4.4.).
Parameter reference Time Units Options a) Hours; days; years Default: years a) Selectable only via SIMATIC PDM. Calibration Interval (4.5.1.) Note The device always operates in years. Changing the units affects only the parameter view of the Calibration Interval parameters in SIMATIC PDM. User-configurable recommended time between product calibrations. Values Units a): hours, days, years Range: 0 to 20 years Default: 1.0 year a) Units are selectable only via SIMATIC PDM.
Parameter reference Reminder Activation (4.5.4.) Note To modify this parameter via SIMATIC PDM it must be accessed via the pull-down menu Device – Maintenance. Allows you to enable a maintenance reminder. Options * Timer OFF ON - no reminders checked ON - Reminder 1 (Maintenance Required) checked ON - Reminders 1 and 2 checked ON—Reminder 2 (Maintenance Demanded) checked 1. First set the values in Reminder 1 (Required) (4.5.5.)/Reminder 2 (Demanded) (4.5.6.). 2.
Parameter reference Maintenance Status (4.5.7.) Indicates which level of maintenance reminder is active. In SIMATIC PDM, open the menu View – Device Diagnostics, select Device Status, click on the Maintenance tab and check the Calibration Schedule Status window. Acknowledge Status (4.5.8.) Indicates which level of maintenance reminder has been acknowledged.
Parameter reference LCD Fast Mode (4.9.) Note • LCD Fast Mode takes effect only after 30 minutes of inactivity. (Each time the device is powered up, a further 30 minutes of inactivity is required.) • LCD Fast Mode affects Measurement mode only; it has no effect on Navigation mode. Enables a faster rate of measurement from the device by disabling most of the display area. Only the bar graph will be refreshed when LCD Fast Mode is set to ON. Values ON * OFF LCD Contrast (4.10.
Parameter reference Device Address (5.1.) Note The address can be changed and locked from a remote master. See PROFIBUS address (Page 231) for details on disabling the address lock and Master Reset (4.1.) to reset Device Address to 126. Sets the unique address of the device on the network (also called PROFIBUS address). Values 0 - 126. Default: 126 To set Device Address via SIMATIC PDM: ● Open the project in Process Device Network View then right-click on the device.
Parameter reference Security (6.) Note Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated. Remote Access (6.1.) Remote Lockout (6.1.1.) Note If access control is changed to limit remote access, it can be reset only via the handheld programmer. Enables or disables programming via the network and PDM. Options * OFF (Remote operation enabled) ON (Remote operation disabled) Local Access (6.2.) Write Protection (6.2.1.) Note Do not lose this number value.
Parameter reference Local Operation (6.2.2.) Enables or disables programming via the hand-held programmer. Options * ENABLED DISABLED In SIMATIC PDM, open the menu Device – Write Locking, select On or Off, and click on Transfer. Language (7.) Selects the language to be used on the LCD.
Parameter reference 8.1 Alphabetical parameter list 8.1 Alphabetical parameter list Note For a detailed list of parameters see Parameter Reference (Page 93). Actual Mode (2.6.2.) AIFB1 (2.6.) AIFB2 (2.7.) Alarms and Warnings (2.6.7.) Algorithm (2.5.7.1.) Allocation (3.5.) Auto False Echo Suppression (2.5.10.1.) Auto False Echo Suppression Range (2.5.10.2.) Calibration (2.3.7.) Calibration Schedule (4.5.) Channel (2.6.3.) CLEF Range (2.5.7.4.) Condensed Status (3.4.) Confidence (2.5.9.1.) Descriptor (2.1.
Parameter reference 8.1 Alphabetical parameter list Event Status (3.5.2.) Event Diagnosis (3.5.3.) Fail-safe Mode (2.6.9.) Far Range (2.5.2.) Fault Reset (3.2.) Fill Rate (2.3.8.2.) Filter Time Constant (2.6.8.1.) Firmware Revision (2.2.2.) Hardware Revision (2.2.1.) High Calibration Pt. (2.3.7.2.) High Level Point (2.3.7.5.) Hover Level (2.5.10.3.) Identification (2.1.) Input Scaling (2.6.5.) Label (2.6.4.) Language (7.) LCD Contrast (4.10.) LCD Fast Mode (4.9.) Level Offset (2.3.7.6.) Level Unit (2.3.2.
Parameter reference 8.1 Alphabetical parameter list Master Reset (4.1.) Max. Measured Value (3.6.2.) Maximum Output Value - AIFB1 (3.6.4.) Maximum Output Value - AIFB2 (3.6.6.) Maximum Sensor Value (2.5.5.) Maximum Value (3.3.2.) Maximum Volume (2.4.1.2.) Measured Values (2.8.) Message (2.1.3.) Min. Measured Value (3.6.1.) Minimum Output Value - AIFB1 (3.6.3.) Minimum Output Value - AIFB2 (3.6.5.) Minimum Sensor Value (2.5.4.) Minimum Value (3.3.1.) Mode (2.6.9.1.) Near Range (2.5.1.) Order Option (2.2.4.
Parameter reference 8.1 Alphabetical parameter list Remote Lockout (6.1.1.) Response Rate (2.3.8.1.) Sampling (2.5.8.) Sampling down (2.5.8.3.) Sampling up (2.5.8.2.) Sensor (2.3.) Sensor Offset (2.3.7.3.) Service Schedule (4.4.) Shaper Mode (2.5.10.4.) Shots (2.5.6.) Signal Processing (2.5.) Static Revision No. (2.6.1.) Tag (2.1.1.) Temperature Units (2.3.4.) TVT setup (2.5.10.) TVT shaper (2.5.11.) Upper Limit Warning (2.6.7.2.) Upper Limit Alarm (2.6.7.1.) Unit (2.3.1.) Value (2.6.9.2.) Vessel Shape (2.
Service and maintenance 9.1 9 Maintenance The radar device requires no maintenance or cleaning under normal operating conditions, although periodic inspection and retightening of the attachment hardware may be required as the gasket material will relax over time (dependant upon process conditions). Under severe operating conditions, the antenna may require periodic cleaning.
Service and maintenance 9.3 Part replacement Replacing the lens 1. Remove existing lens by turning it counter-clockwise until it separates from the unit. 2. Replace the O-ring between the lens and process connection with a new one. 3. Carefully thread the replacement lens, and turn it clockwise until resistance is encountered. Do not over-tighten the lens, as this will permanently damage it. 4. For flange installation instructions, see Flange bolting, Flanged encapsulated antenna only (Page 22).
10 Diagnosing and troubleshooting 1. Check the following: – There is power at the device. – The LCD shows the relevant data. – The device can be programmed using the handheld programmer. – If any fault codes are being displayed see Acyclic Extended Diagnostics (General Fault Codes) (Page 240) for a detailed list. 2. Verify that the wiring connections are correct. 3. Check the PROFIBUS address and make sure all devices are at unique PROFIBUS addresses. 4. See the table below for specific symptoms.
Diagnosing and troubleshooting 10.1 Device status icons 10.
Diagnosing and troubleshooting 10.2 General fault codes 10.2 General fault codes Note • The status icon shown associated with each fault is the default icon in Condensed Mode. • If more than one fault is present, the device status indicator and text for each fault alternate at 2 second intervals. • Some faults cause the device to go to Fail-safe mode (Fault 52). These are indicated with an asterisk (*).
Diagnosing and troubleshooting 10.2 General fault codes Code/ Icon Meaning Corrective Action S: 9 Service interval as defined in Reminder 2 (Demanded) (4.4.6.) has expired. Perform service. S: 10 Input parameters Low Calibration Point (1.6.) and High Calibration Point (1.7.) are the same. • Check calibration settings of device. • Ensure settings for High Calibration Point and Low Calibration Point are different. S: 11 Internal temperature sensor failure.
Diagnosing and troubleshooting 10.2 General fault codes Code/ Icon Meaning Corrective Action S: 32 IDENT number conflict. Ensure value of the Ident number selector is correct for the network configuration. If it is correct, the device needs to be re parameterized by the PLC. Repair required: contact your local Siemens representative. S: 33 * Factory calibration for the internal temperature sensor has been lost. S: 34 * Factory calibration for the device has been lost.
Diagnosing and troubleshooting 10.3 Operation troubleshooting 10.3 Operation troubleshooting Operating symptoms, probable causes, and resolutions. Symptom Cause Action Display shows level or target is out of range • check specifications • check Low Calibration Pt. (1.6.) • increase Confidence (2.5.9.1.
Diagnosing and troubleshooting 10.3 Operation troubleshooting Symptom Cause Action Reading erratic echo confidence weak • refer to Confidence (2.5.9.1.) • use Auto False Echo Suppression (2.5.10.1.) and Auto False Echo Suppression Range (2.5.10.2.) • use foam deflector or stillpipe • decrease Fill Rate (2.3.8.2..) • relocate device to side pipe • increase confidence threshold in Echo Threshold (2.5.7.3.) material filling • Re-locate SITRANS LR250 Reading response slow Fill Rate (2.3.8.
Diagnosing and troubleshooting 10.
11 Technical data Note • Siemens Milltronics makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. 11.
Technical data 11.2 Performance 11.2 Performance Reference operating conditions according to IEC 60770-1 Ambient temperature 15 to 25 °C (59 to 77 °F) Humidity 45 to 75% relative humidity Ambient pressure 860 to 1060 mbar a (86000 to 106000 N/m2 a) Measurement Accuracy (measured in accordance with IEC 60770-1) Maximum measured error =3 mm (0.12")1) 2) 3) including hysteresis and nonrepeatability Frequency K-band Maximum measurement range4) 1.5" antenna, and 2" threaded PVDF 10 m (32.
Technical data 11.3 Interface 11.3 Interface Communication PROFIBUS PA Configuration Remote Siemens SIMATIC PDM Local Siemens infrared handheld programmer Display (local)1) graphic LCD, with bar graph representing level 1) 11.4 Process connection: Antenna: Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F). Mechanical Threaded connection 1.5" NPT (ASME B1.20.1), R (BSPT, EN 10226-1) a) or G (BSPP, EN ISO 228-1) or 2" NPT (ASME B1.20.
Technical data 11.4 Mechanical Enclosure Weight (excluding extensions): Flanged encapsulated antenna 316L /1.4404 or 316L /1.4435 stainless steel Wetted materials TFMTM 1600 PTFE lens Construction aluminum, polyester powder-coated Conduit entry 2 x M20x1.5, or 2 x ½" NPT Ingress protection Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 1.5" threaded connection with 1.5" horn antenna approximately 5.1kg (11.2 lb) 2" threaded connection with 2" horn antenna approximately 5.5 kg (12.
Technical data 11.5 Environmental 11.5 Environmental Note • For the specific configuration you are about to use or install, check transmitter nameplate and see Approvals (Page 174). • Use appropriate conduit seals to maintain IP or NEMA rating. Location indoor/ outdoor Altitude 5000 m (16,404 ft) max.
Technical data 11.7 Approvals 11.7 Approvals Note The device nameplate lists the approvals that apply to your device. Application type LR250 version Approval rating Valid for: Non-hazardous General purpose CSAUS/C, FM, CE, C-TICK N. America, Europe Radio Europe (R&TTE), FCC, Industry Canada Intrinsically safe (Page 30) ATEX II 1G, Ex ia IIC T4 Ga ATEX II 1D, Ex ia ta IIIC T100 °C Da Europe IECEx SIR 05.0031X, Ex ia IIC T4 Ga Ex ia ta IIIC T100 °C Da International FM/CSA Class I, Div.
Technical data 11.8 Programmer (infrared keypad) 11.8 Programmer (infrared keypad) Note Battery is non-replaceable with a lifetime expectancy of 10 years in normal use. To estimate the lifetime expectancy, check the nameplate on the back for the serial number. The first six numbers show the production date (mmddyy), for example, serial number 032608101V was produced on March 26, 2008.
Technical data 11.
Dimension drawings 12.1 12 Threaded horn antenna Note • Process temperature and pressure capabilities are dependent upon information on the process connection tag. Reference drawing listed on the tag is available for download from our website under Support/Installation drawings/Level Measurement/Continuous Radar/LR250: Product page (http://www.siemens.com/LR250) • Process connection drawings are also available for download from the Installation Drawings page.
Dimension drawings 12.1 Threaded horn antenna ① ② ③ ④ ⑤ ⑥ ½" NPT cable entry, or M20 cable gland threaded cover 2" horn 3" horn 4" horn ⑦ ⑧ ⑨ ⑩ ⑪ enclosure/electronics retaining collar process connection tag horn sensor reference point horn O.D.
Dimension drawings 12.1 Threaded horn antenna Threaded horn dimensions Antenna Type Antenna O.D. in mm (inch) Height to sensor reference point, in mm (inch) a) 1-1/2" threaded connection 2" threaded connection 3" threaded connection 1.5" 39.8 (1.57) 135 (5.3) N/A N/A 19 10 (32.8) 2" 47.8 (1.88) N/A 166 (6.55) 180 (7.09) 15 20 (65.6) 3" 74.8 (2.94) N/A 199 (7.85) 213 (8.39) 10 20 (65.6) 4" 94.8 (3.73) N/A 254 (10) 268 (10.55) 8 20 (65.
Dimension drawings 12.2 Threaded horn antenna with extension 12.2 Threaded horn antenna with extension ① ② ③ ④ ⑤ ⑥ ½" NPT cable entry, or M20 cable gland threaded cover 2" horn 3" horn 4" horn ⑦ ⑧ ⑨ ⑩ ⑪ enclosure/electronics retaining collar process connection tag horn sensor reference point horn O.D.
Dimension drawings 12.2 Threaded horn antenna with extension Threaded horn with extension dimensions Antenna Type Antenna O.D. in mm (inch) Height to sensor reference point, in mm (inch) a) 1-1/2" threaded connection 2" threaded connection 3" threaded connection Beam Angle Measurement (°) b) range in m (ft) 1.5" 39.8 (1.57) 235 (9.25) N/A N/A 19 10 (32.8) 2" 47.8 (1.88) N/A 266 (10.47) 280 (11.02) 15 20 (65.6) 3" 74.8 (2.94) N/A 299 (11.77) 313 (12.32) 10 20 (65.6) 4" 94.8 (3.
Dimension drawings 12.3 Flanged horn antenna 12.3 Flanged horn antenna ① ② ③ ④ ⑤ ½" NPT cable entry, or M20 cable gland threaded cover horn horn O.D.
Dimension drawings 12.3 Flanged horn antenna Flanged Horn dimensions Nominal horn size in mm (inch) Horn O.D. in mm (inch) 50 (2) Height to sensor reference point, in mm (inch)a) Beam angle (°)b) Stainless steel flange: raised or flat-face Optional alloy flange c) 47.8 (1.88) 135.3 (5.32) 138.3 (5.44) 15 80 (3) 74.8 (2.94) 168.3 (6.62) 171.3 (6. 74) 10 100 (4) 94.8 (3.73) 223.3 (8.79) 226.3 (8.90) 8 Measurement range, in m (ft) 20 (65.
Dimension drawings 12.4 Flanged horn antenna with extension 12.4 Flanged horn antenna with extension ① ② ③ ④ ⑤ ½" NPT cable entry, or M20 cable gland threaded cover horn horn O.D.
Dimension drawings 12.4 Flanged horn antenna with extension Flanged horn with extension dimensions Nominal horn size in mm (inch) Horn O.D. in mm Height to sensor reference point,, in mm (inch) (inch) a) 50 (2) Beam angle (°)b) Stainless steel flange: raised or flat-face Optional alloy flange c) 47.8 (1.88) 235.3 (9.26) 238.3 (9.38) 15 80 (3) 74.8 (2.94) 268.3 (10.56) 271.3 (10.68) 10 100 (4) 94.8 (3.73) 323.3 (12.73) 326.3 (12.85) 8 Measurement range, in m (ft) 20 (65.
Dimension drawings 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only) 12.
Dimension drawings 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only) Flanged encapsulated antenna (2"/DN50/50A) dimensions 2"/DN50/50A 1) ③ mm (inch) ⑦ mm (inch) ⑧ mm (inch) ⑩ mm (inch)1) 263 (10.35) 223 (8.78) 274 (10.79) 11 (0.43) Height from tip of lens to sensor reference point as shown. Flange size Flange class Flange O.D. [mm (inch)] Antenna aperture size [mm (inch)] Beam angle (°)1) Measurement range [m (ft)] 50 (1.97) 12.8 10 (32.8)2) 2" 150 LB 152 (5.
Dimension drawings 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) 12.
Dimension drawings 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) Flanged encapsulated antenna (3"/DN80/80A and larger) dimensions ③ mm (inch) ⑦ mm (inch) ⑧ mm (inch) ⑩ mm (inch)1) 3"/DN80/80A 328 (12.91) 288 (11.34) 343 (13.50) 15 (0.59) 4"/DN100/100A 328 (12.91) 288 (11.34) 343 (13.50) 13 (0.51) 6"/DN150/150A 333 (13.11) 293 (11.54) 348 (13.70) 15 (0.59) 1) Height from tip of lens to sensor reference point as shown. See also Raised-Face Flange per EN 1092-1.
Dimension drawings 12.7 Threaded PVDF antenna 12.
Dimension drawings 12.8 Threaded connection markings Threaded PVDF antenna dimensions Nominal antenna size Antenna O.D. Height to sensor reference point a) Beam angle b) Measurement range 50 mm (2") 49.5 mm (1.94") 121 mm (4.76") 19 degrees 10 m (32.8 ft)c) a) Height from bottom of antenna to sensor reference point as shown: see dimension drawing. b) -3dB in the direction of the polarization axis. See Polarization reference point (Page 20) for an illustration. c) 12.
Dimension drawings 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna Stainless steel or optional alloy N06022/2.4602 (Hastelloy® C-22) ① ② ③ ④ ⑤ angle of adjacent bolt holes bolt hole diameter bolt hole circle diameter waveguide mounting hole Flange O.D.
Dimension drawings 12.9 Raised-Face flange per EN 1092-1 for flanged horn antenna Raised-Face flange dimensions Flange bolt hole pattern ⑤ ③ ② Flange O.D.
Dimension drawings 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna Stainless steel ① ② ③ ④ angle of adjacent bolt holes bolt hole diameter bolt hole circle diameter antenna ⑤ ⑥ ⑦ ⑧ flange O.D.
Dimension drawings 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna Raised-Face flange dimensions Pipe size Flange class ⑤ ③ ② Flange O.D. [mm (inch)] Bolt hole circle Ø [mm (inch)] 152 (5.98) 120.7 (4.75) 3" 190 (7.48) 152.4 (6.00) 4" 230 (9.06) 190.5 (7.50) 6" 280 (11.02) 241.3 (9.50) 22.2 (0.87) 155 (6.10) 125 (4.92) 18 (0.71) DN80 200 (7.87) 160 (6.30) DN100 220 (8.66) 180 (7.09) DN150 285 (11.22) 240 (9.45) 22 (0.87) 155 (6.10) 120 (4.72) 19 (0.
Dimension drawings 12.10 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna Raised-Face flange markings Blind Flange Markings (Optional Manufacturer’s Logo [optional]; Flange Standard; Nominal Size; Material; Heat Code) Manufacturer’s logo; EN 1092-1 05 ‘B1’; ‘DN50’ ‘PN16’ ‘1.4404 or 1.4435’ A1B2C3 Machining Identification Serial no. mmddyyx xx Logo Welded Assembly Identification Flange series Flange series Heat Code no.
Dimension drawings 12.11 Flat-Face flange 12.
Dimension drawings 12.11 Flat-Face flange Flat-Face flange dimensions Flange size a) Flange class Flange O.D. Bolt hole circle Ø Bolt hole Ø No. of bolt holes Thickness 2" ASME 150 lb 6.0" 4.75" 0.75" 4 0.88" 3" ASME 150 lb 7.5" 6.0" 0.75" 4 0.96" 4" ASME 150 lb 9.0" 7.50" 0.75" 8 1.25" 2" ASME 300 lb 6.50" 5.00" 0.75" 8 1.12" 3" ASME 300 lb 8.25" 6.62" 0.88" 8 1.38" 4" ASME 300 lb 10.00" 7.88" 0.88" 8 1.50" DN 50 EN PN 16 165 mm 125 mm 18 mm 4 24.
Dimension drawings 12.11 Flat-Face flange Flat-Face flange markings Flat Face Flange Identification Serial No. Logo MMDDYYXXX Welded Assembly Identification Flange series Series Nominal size 25556 2 150 DN80 PN16 Material Heat code Flange series Heat code no. 316L/ 1.4404 or 316L/ 1.4435 A1B2C3 25546 A1B2C3 Serial number: A unique number allotted to each flange, including the date of manufacture (MMDDYY) followed by a number from 001 to 999 (indicating the sequential unit produced).
Dimension drawings 12.12 Process connection tag (pressure rated versions) 12.12 Process connection tag (pressure rated versions) For pressure-rated versions only, the process connection label lists the following information: Process connection tag (pressure rated versions) Item Sample Text Comments/Explanation SERIAL # GYZ / 00000000 Pressure Boundary Assembly NOMINAL PIPE SIZE (DN) 4 INCH / 100mm Nominal Pipe Size INSTRUMENT MAWP (PS) 11.
Appendix A: Technical reference A Note Where a number follows the parameter name [for example, Master Reset (4.1.)] this is the parameter access number via the handheld programmer. See Parameter Reference (Page 93) for a complete list of parameters. A.1 Principles of operation SITRANS LR250 is a 2-wire 25 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries. (The microwave output level is significantly less than that emitted from cellular phones.
Appendix A: Technical reference A.2 Echo processing A.2 Echo processing A.2.1 Process Intelligence The signal processing technology embedded in Siemens radar level devices is known as Process Intelligence. Process intelligence provides high measurement reliability regardless of the dynamically changing conditions within the vessel being monitored. The embedded Process Intelligence dynamically adjusts to the constantly changing material surfaces within these vessels.
Appendix A: Technical reference A.2 Echo processing A.2.2 Echo Selection Time Varying Threshold (TVT) A Time Varying Threshold (TVT) hovers above the echo profile to screen out unwanted reflections (false echoes). In most cases the material echo is the only one which rises above the default TVT. In a vessel with obstructions, a false echo may occur. See Auto False Echo Suppression (Page 207) for more details.
Appendix A: Technical reference A.2 Echo processing Algorithm (2.5.7.1.) The true echo is selected based on the setting for the Echo selection algorithm. Options are true First Echo, Largest Echo, or best of First and Largest. Position Detect (2.5.7.2.) The echo position detection algorithm determines which point on the echo will be used to calculate the precise time of flight, and calculates the range using the calibrated propagation velocity (see Propagation Factor (2.5.3.) for values).
Appendix A: Technical reference A.2 Echo processing Example: CLEF off: Position set to Hybrid Vessel height: 1.5 m; CLEF range set to 0 (Center algorithm gives the same result.) ① ② ③ ④ default TVT material echo vessel bottom echo selected echo marker Example: CLEF enabled Vessel height: 1.5 m; CLEF range set to 0.
Appendix A: Technical reference A.2 Echo processing A.2.3 CLEF Range Determines the level below which the CLEF algorithm will be used. Above this level the Center algorithm is used when Hybrid is selected in Position Detect (2.5.7.2.). CLEF Range is referenced from Low Calibration Point (process empty level). ① ② ③ A.2.
Appendix A: Technical reference A.2 Echo processing A.2.6 Auto False Echo Suppression Note • For detailed instructions on using this feature via PDM see Auto False Echo Suppression (Page 73). • For detailed instructions on using this feature via the handheld programmer see Auto False Echo Suppression (2.5.10.1.).
Appendix A: Technical reference A.2 Echo processing Example before Auto False Echo Suppression ① ② ③ ④ default TVT false echo material echo ⑤ ⑥ ⑦ high calibration point = 0 obstruction at 1.3. m material level at 3.
Appendix A: Technical reference A.2 Echo processing A.2.7 Measurement Range Near Range (2.5.1.) Near Range programs SITRANS LR250 to ignore the zone in front of the antenna. The default blanking distance is 50 mm (1.97") from the end of the antenna. Near Range allows you to increase the blanking value from its factory default. But Auto False Echo Suppression (2.5.10.1.) is generally recommended in preference to extending the blanking distance from factory values. Far Range (2.5.2.
Appendix A: Technical reference A.2 Echo processing A.2.9 Damping Filter Time Constant (2.6.8.1) smooths out the response to a sudden change in level. This is an exponential filter and the engineering unit is always in seconds. In 5 time constants the output rises exponentially: from 63.2% of the change in the first time constant, to almost 100% of the change by the end of the 5th time constant. Damping example time constant = 2 seconds input (level) change = 2 m A.2.
Appendix A: Technical reference A.2 Echo processing A.2.10.2 Fail-safe Behavior The purpose of the Fail-safe setting is to put the process into a safe mode of operation in the event of a fault or failure. The value to be reported in the event of a fault is selected so that a loss of power or loss of signal triggers the same response as an unsafe level. Fail-safe mode may be triggered by a loss of echo, a bad configuration, or certain device faults.
Appendix A: Technical reference A.3 Maximum Process Temperature Chart A.3 Maximum Process Temperature Chart WARNING Internal temperature must not exceed +80 ° C (+176 °F). Note • The chart below is for guidance only. • The chart does not represent every possible process connection arrangement. For example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic vessel surface. • The chart does not take into consideration heating from direct sunshine exposure.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves A.4 Process Pressure/Temperature Derating Curves WARNING • Never attempt to loosen, remove or disassemble process connection or device housing while vessel contents are under pressure. • Materials of construction are chosen based on their chemical compatibility (or inertness) for general purposes. For exposure to specific environments, check with chemical compatibility charts before installing.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves A.4.1 Horn antenna WARNING Never attempt to loosen, remove or disassemble process connection or device housing while vessel contents are under pressure. Note Customer to provide adequate bolting and gasketing to retain vessel pressure and provide sufficient sealing. 1.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves A.4.
Appendix A: Technical reference A.
Appendix A: Technical reference A.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves A.4.3 Flanged encapsulated antenna ASME B16.
Appendix A: Technical reference A.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves A.4.
Appendix B: PROFIBUS PA profile structure B.1 B PROFIBUS Level Device Design The device follows the profile block model and is implemented as a Profile 3.0, Class B, PA device. Standard profile parameters are used to program the level transducer block. B.2 Block Model The Block Model represents how measured values are recorded and processed. All data is viewed from the perspective of the DCS or PLC, so information from the sensor is an input.
Appendix B: PROFIBUS PA profile structure B.2 Block Model Analog Input Function Blocks AIFB1 and AIFB2 The two AIFBs are completely independent of each other. They utilize the measurement value output from the Transducer Block [Primary Value (PV), Secondary Value 1 (SV1), or Secondary Value 2 (SV2)] and apply any required quality checks, scaling, and Fail-safe operation selections.
Appendix B: PROFIBUS PA profile structure B.2 Block Model B.2.1.2 How the transducer block works: 1. The sensor technology block selects the proper echo. For an explanation of sensor technology, see Appendix A: Technical Reference (Page 201). The sensor value (in sensor units) is checked to see if it is within its measuring limits. If the limit is exceeded, this results in a Bad status and the error message Failure in measurement. The sensor value is stored in Sensor Value.
Appendix B: PROFIBUS PA profile structure B.2 Block Model ① Distance/SV2 ⑥ Level ② High level point (default: 100%) ⑦ Low level point (default: 0%) ③ Sensor value a) ⑧ Level offset c) ④ High calibration point ⑨ Secondary value 1 ⑤ Sensor reference point b) ⑩ Low calibration point a) Referenced from Sensor Reference Point. Sensor Offset (2.3.7.3.) is a constant offset that can be added to or subtracted from sensor reference point to compensate if the sensor has been changed.
Appendix B: PROFIBUS PA profile structure B.2 Block Model Electronics temperature The Transducer Block monitors the internal temperature of the device electronics. A change in temperature can provide advance warning of a possible device failure, and allow for preventive maintenance. If a temperature limit is exceeded, the output value is unchanged but the output status changes. (The permitted limits correspond to those of the permitted ambient temperature.
Appendix B: PROFIBUS PA profile structure B.2 Block Model AIFB function groups Analog Input Function Block function groups (simulation, mode and status) Measured values are processed within an Analog Input Function Block to produce the device output. See AIFB function groups (Page 226). The output is communicated via cyclic transfer to PROFIBUS PA and displayed on the LCD.
Appendix B: PROFIBUS PA profile structure B.2 Block Model How an Analog Input Function Block works The AIFB provides a linear conversion to any desired units. 1. The AIFB Input value is the processed output value of the Transducer Block, in Transducer Block units. 2. The user selects the desired AIFB output units and scaling is applied. 3. Damping may be applied based on a time constant provided by the user. See Damping (Page 210) for details. 4.
Appendix B: PROFIBUS PA profile structure B.
Appendix C: Communications via PROFIBUS C SITRANS LR250 (PROFIBUS PA) is a Profile Version 3.01, Class B, PA device. It supports Class 1 Master for cyclic and acyclic data exchange, and Class 2 for acyclic services. The full range of SITRANS LR250 functions is available only over a PROFIBUS PA network. PROFIBUS PA is an open industrial protocol. Full details about PROFIBUS PA can be obtained from PROFIBUS International at: PROFIBUS PA (http://www.profibus.com/) C.
Appendix C: Communications via PROFIBUS C.2 Network configuration C.2 Network configuration To configure a PROFIBUS PA Class 1 Master (for example, a PLC), you will need a GSD file. C.2.1 The GSD file The GSD file SIEM8150.gsd is available from the SITRANS LR250 product page on our web site. Go to the product page of our website and click on Support > Software Downloads: Product page (http://www.siemens.com/LR250) C.
Appendix C: Communications via PROFIBUS C.5 PROFIBUS address C.5 PROFIBUS address A unique PROFIBUS address identifies each device on the network. To set the PROFIBUS address see Device Address (5.1.). Note • It is possible to change the device address via a Class 1 master (for example, a PLC) and lock the device address to prevent further changes. • If this Address Lock is on, the PA address cannot be changed. This lock can be disabled only by performing an Address Reset.
Appendix C: Communications via PROFIBUS C.6 Operating as a profile device C.6 Operating as a profile device Every manufactured PROFIBUS product has a unique PROFIBUS identification number which identifies it to the system. PROFIBUS Profile Standard version 3.01 also defines a Profile Model which can identify a product as a generic profile device on the network.
Appendix C: Communications via PROFIBUS C.7 Cyclic versus acyclic data C.7 Cyclic versus acyclic data When you request data from a device via PROFIBUS PA, you have two choices. Cyclic data is provided at every bus scan: acyclic data is requested and provided as needed. Input information is always requested at every bus scan and is set up as cyclic data. Configuration information is only needed periodically and is set up as acyclic data. C.7.
Appendix C: Communications via PROFIBUS C.8 Status byte C.8 Status byte In PROFIBUS PA there are two possible types of status byte: ● status byte: originally defined in Profile Standard V3.0 ● condensed status: an alternative status byte defined in Profile Standard V3.01 You can choose which type of status byte will be returned, by enabling or disabling Condensed Status (3.4.): see Enable (3.4.1.) for details.
Appendix C: Communications via PROFIBUS C.9 Condensed status C.9 Condensed status These codes are available when Condensed Status is enabled. See Condensed Status (3.4.) for more details. Condensed Status (GOOD) Hex value Status - GOOD Description 0x80 GOOD – ok No error or special condition is associated with this value. 0x84 GOOD – update event Set if the value is good and the block has an active Update event. (This status remains active for 20 seconds.
Appendix C: Communications via PROFIBUS C.9 Condensed status Condensed Status (UNCERTAIN) Hex value Status - UNCERTAIN Description 0x73 UNCERTAIN – simulated value, start Indicates the start of a simulation. 0x74 ...0x77 UNCERTAIN – simulated value, end Simulation of a measured value or Input FB mode changes from AUTO to MAN. • This status remains active for at least 10 seconds: – after enabling simulation – after setting the FB to MAN mode – after a restart (e.g.
Appendix C: Communications via PROFIBUS C.10 Diagnostics C.10 Diagnostics All diagnostic information shown below is viewable via PDM. C.10.1 Diagnosis reply (available cyclically) During DPV0 data exchange, the PROFIBUS PA slave will notify the Master when a serious error occurs. The Master will then send a Diagnosis request. The reply to this request is normally logged in the PLC and is referred to as the "Hex values." The reply may contain two parts.
Appendix C: Communications via PROFIBUS C.10 Diagnostics C.10.
Appendix C: Communications via PROFIBUS C.10 Diagnostics C.10.
Appendix C: Communications via PROFIBUS C.10 Diagnostics C.10.5 Acyclic extended diagnostics (general fault codes) In addition to the extended diagnostics available by cyclic data exchange (shown above), further extended diagnostics are available via acyclic communications. This consists of six bytes. See Diagnosis reply (available cyclically) (Page 237) for information on the location of the Extended Diagnostics.
Appendix C: Communications via PROFIBUS C.10 Diagnostics Acyclic Extended Diagnostics /General Fault Codes LCD display S:0 Meaning Corrective Action The device was unable to get a measurement within the Failsafe LOE Timer period. Possible causes: faulty installation, antenna material buildup, foaming/other adverse process conditions, invalid calibration range. • Ensure installation details are correct. • Ensure no antenna material buildup. Clean if necessary.
Appendix C: Communications via PROFIBUS C.10 Diagnostics Acyclic Extended Diagnostics /General Fault Codes LCD display S:12 S:14 S:15 * Meaning Corrective Action Internal temperature of the device has exceeded specifications: it is operating outside its temperature range. • Relocate device and/or lower process temperature enough to cool device. • Inspect for heat-related damage and contact your local Siemens representative if repair is required.
Appendix C: Communications via PROFIBUS C.10 Diagnostics Acyclic Extended Diagnostics /General Fault Codes LCD display Meaning Corrective Action S:32 IDENT number conflict. Ensure value of the Ident number selector is correct for the network configuration. If it is correct, the device needs to be reparameterized by the PLC. Byte 0 S:33 Factory calibration for the internal temperature sensor has been lost. Repair required: contact your local Siemens representative.
Appendix C: Communications via PROFIBUS C.10 Diagnostics C.10.6 Acyclic data SITRANS LR250 supports up to four simultaneous connections by a Class 2 Master (C2 connection). It supports one connection by a Class 1 Master (C1 connection). In order for a Class 1 Master to read parameters from a device, it needs to know the slot and absolute index of the parameter. The parameters are all listed in SIMATIC PDM under Help.
Appendix D: Certificates and Support D.1 D Certificates Certificates can be downloaded from our website at: Product page (http://www.siemens.com/LR250). D.2 Technical support If you have any technical questions about the device described in these Operating Instructions and do not find the right answers, you can contact Customer Support: ● Via the Internet using the Support Request: Support request (http://www.siemens.
Appendix D: Certificates and Support D.2 Technical support Additional Support Please contact your local Siemens representative and offices if you have additional questions about the device Find your contact partner at: Local contact person (http://www.siemens.
13 List of abbreviations Short form Long form AIFB Analog Input Function Block CE / FM / CSA Conformité Européene / Factory Mutual / Canadian Standards Association Ci Internal capacitance D/A Dialog to analog DCS Distributed Control System dK dielectric constant EDD Electronic Device Description FEA Flanged encapsulated antenna Description Units safety approval F control room apparatus Ii Input current mA Io Output current mA IS Intrinsically Safe Li Internal inductance mH
List of abbreviations SITRANS LR250 (PROFIBUS PA) 248 Operating Instructions, 01/2014, A5E32221386-AB
LCD menu structure 14 Note • In Navigation mode, ARROW keys ( ) navigate the menu in the direction of the arrow. See Parameter Reference (Page 93) for detailed information and instructions.
LCD menu structure SITRANS LR250 (PROFIBUS PA) 250 Operating Instructions, 01/2014, A5E32221386-AB
LCD menu structure SITRANS LR250 (PROFIBUS PA) Operating Instructions, 01/2014, A5E32221386-AB 251
LCD menu structure SITRANS LR250 (PROFIBUS PA) 252 Operating Instructions, 01/2014, A5E32221386-AB
LCD menu structure SITRANS LR250 (PROFIBUS PA) Operating Instructions, 01/2014, A5E32221386-AB 253
LCD menu structure SITRANS LR250 (PROFIBUS PA) 254 Operating Instructions, 01/2014, A5E32221386-AB
Glossary accuracy degree of conformity of a measure to a standard or a true value. agitator mechanical apparatus for mixing or aerating. A device for creating turbulence. algorithm a prescribed set of well-defined rules or processes for the solution of a problem in a finite number of steps. ambient temperature the temperature of the surrounding air that comes in contact with the enclosure of the device. antenna an aerial which sends out and receives a signal in a specific direction.
Glossary beam angle the angle diametrically subtended by the one-half power limits (-3 dB) of the microwave beam. beam spreading the divergence of a beam as it travels through a medium. blanking a blind zone extending away from the reference point plus any additional shield length.The device is programmed to ignore this zone. capacitance the property of a system of conductors and dielectrics that permits the storage of electricity when potential differences exist between the conductors.
Glossary dielectric constant (dK) the ability of a dielectric to store electrical potential energy under the influence of an electric field. Also known as Relative Permittivity. An increase in the dielectric constant is directly proportional to an increase in signal amplitude. The value is usually given relative to a vacuum /dry air: the dielectric constant of air is 1.
Glossary frequency the number of periods occurring per unit time. Frequency may be stated in cycles per second. hertz (Hz): unit of frequency, one cycle per second. 1 Gigahertz (GHz) is equal to 109 Hz. horn antenna a conical, horn-shaped antenna which focuses microwave signals. The larger the horn diameter, the more focused the radar beam. inductance the property of an electric circuit by virtue of which a varying current induces an electromotive force in that circuit or in a neighboring circuit.
Glossary polarization error the error arising from the transmission or reception of an electromagnetic wave having a polarization other than that intended for the system. PROFIBUS PA one of the PROFIBUS family of protocols, specifically tailored for the needs of process industries (PA = Process Automation). propagation factor (pf) where the maximum velocity is 1.0, pf is a value that represents a reduction in propagation velocity as a result of the wave travelling through a pipe or medium.
Glossary shot one transmit pulse or measurement. speed of light the speed of electromagnetic waves (including microwave and light) in free space. Light speed is a constant 299, 792, 458 meters per second. stilling-well see stillpipe. stillpipe a pipe that is mounted inside a vessel parallel to the vessel wall, and is open to the vessel at the bottom. TVT (Time Varying Threshold) a time-varying curve that determines the threshold level above which echoes are determined to be valid.
Index A C Abbreviations and identifications list, 247 access control local access, 153 remote access, 153 Acknowledge Faults via PDM, 78 activating SITRANS LR250, 35 acyclic diagnostics fault codes, 237 agitator blade detection avoiding, 113 antenna replacement, 159 antenna types flanged encapsulated antenna, 187, 189 flanged horn antenna, 183 flanged horn antenna with extension, 185 threaded horn, 177 threaded PVDF antenna, 191 Auto False Echo Suppression explanation, 207 setup, 115 setup via LUI, 117 TV
Index Device Reset see Master Reset, 133 Device Status icons, 162 view via PDM, 86 diagnosis reply, 237 Diagnostics maintenance settings, 126 via PDM, 83 dimensions flanged encapsulated antenna, 187, 189 flanged horn, 183, 185 flat face flange, 198 raised face flange, 193, 195 threaded horn with extension, 179 threaded PVDF antenna, 191 E echo confidence parameter setup, 114 echo processing Process Intelligence, 202 Echo Profile data logging, 71 view via LUI, 48 view via PDM, 70 Echo Profile Utilities Aut
Index Function keys measurement mode, 38 G GSD file, 230 H handheld programmer edit mode, 44 measurement mode, 38 navigation, 41 programming, 39 hazardous area installations instructions, 34 wiring requirements, 28 hysteresis setup, 123 I Identifications and abbreviations list, 247 installation hazardous area requirements, 28 requirements, 15 warnings and notes, 15 internal temperature monitoring, 212 L Language, 154 LCD display contrast adjustment, 151 echo profile viewing, 48 fast mode, 151 lens repl
Index O operating principles cleaning, 201 Operation level, distance, space, 94 Output limits setup, 122 Output Scale setup, 121 overview, 13 P parameters reset via PDM, 69 password protection via PDM, 89 PDM see SIMATIC PDM, 59 peak values electronics temperature, 87 sensor peak values FB1 and FB2, 88 PED (Pressure Equipment Directive), 16, 213 performance specifications, 170 pipe sizes flange mounting, 193, 195 polarization reference point, 20 power consumption, 230 power source requirements, 25 power s
Index settings adjust parameters via LUI, 44 adjust parameters via PDM, 39, 68 sidepipe see bypass pipe, 20 SIMATIC PDM functions and features, 59 overview, 229 Rev 5.2, SP1 features, 60 Rev 6.
Index SITRANS LR250 (PROFIBUS PA) 266 Operating Instructions, 01/2014, A5E32221386-AB
www.siemens.com/processautomation For more information www.siemens.com/level www.siemens.com/weighing Siemens AG Subject to change without prior notice Industry Sector A5E32221386 Rev. AB 1954 Technology Drive © Siemens AG 2013 P.O. Box 4225 Peterborough, ON Canada K9J 7B1 email: techpubs.smpi@siemens.com www.siemens.
