Siemens Canada Siemens Milltronics Process Instruments LR250 SITRANS LR 250 TANK LEVEL PROBING RADAR User Manual SITRANS LR250 PROFIBUS PA

Siemens Canada Ltd. - Siemens Milltronics Process Instruments SITRANS LR 250 TANK LEVEL PROBING RADAR SITRANS LR250 PROFIBUS PA

User Manual 6

SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 173 Service and maintenance 9 9.1 Basic safety information WARNING Impermissible repair of the device • Repair must be carried out by Siemens authorized personnel only. CAUTION Releasing key lock Improper modification of parameters could influence process safety. • Make sure that only authorized personnel may cancel the key locking of devices for safety-related applications. 9.2 Cleaning The radar device requires no cleaning under normal operating conditions. Under severe operating conditions, the antenna may require periodic cleaning. If cleaning becomes necessary: ● Note the antenna material and the process medium, and select a cleaning solution that will not react adversely with either. ● Remove the device from service and wipe the antenna clean using a cloth and suitable cleaning solution. NOTICE Penetration of moisture into the device Device damage. • Make sure when carrying out cleaning and maintenance work that no moisture penetrates the inside of the device.
Service and maintenance 9.3 Maintenance and repair work SITRANS LR250 (PROFIBUS PA) 174 Operating Instructions, 08/2014, A5E32221386-AC WARNING Electrostatic charge Danger of explosion in hazardous areas if electrostatic charges develop, for example, when cleaning plastic surfaces with a dry cloth. • Prevent electrostatic charging in hazardous areas. 9.3 Maintenance and repair work The device is maintenance-free. However, a periodic inspection according to pertinent directives and regulations must be carried out. An inspection can include check of: ● Ambient conditions ● Seal integrity of the process connections, cable entries, and cover screws ● Reliability of power supply, lightning protection, and grounds WARNING Maintenance during continued operation in a hazardous area There is a danger of explosion when carrying out repairs and maintenance on the device in a hazardous area. • Isolate the device from power. - or - • Ensure that the atmosphere is explosion-free (hot work permit). WARNING Humid environment Danger of electric shock. • Avoid working on the device when it is energized. • If working on an energized device is necessary, ensure that the environment is dry. • Make sure when carrying out cleaning and maintenance work that no moisture penetrates the inside of the device.
Service and maintenance 9.3 Maintenance and repair work SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 175 9.3.1 Unit repair and excluded liability All changes and repairs must be done by qualified personnel, and applicable safety regulations must be followed. Please note the following: ● The user is responsible for all changes and repairs made to the device. ● All new components must be provided by Siemens. ● Restrict repair to faulty components only. ● Do not re-use faulty components. 9.3.2 Part replacement If the antenna, lens, secondary O-ring, and spring washers require replacement due to damage or failure, they may be replaced without the need for re-calibration if of the same type and size. Replacing the antenna Changing to a different antenna type may be performed by a Siemens authorized repair center or personnel. If the electronics or enclosure require replacement due to damage or failure, please ensure the correct antenna version is used, otherwise a re-calibration will need to be performed by Siemens authorized personnel. 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 Flanged versions (Page 36). Note After installation of the new lens onto the flanged encapsulated antenna version and before mounting on the vessel/tank, some lenses may not appear to lie flush on the device, but this is normal and will not impact performance.
Service and maintenance 9.3 Maintenance and repair work SITRANS LR250 (PROFIBUS PA) 176 Operating Instructions, 08/2014, A5E32221386-AC Raised-Face flange kits Description Process connection size Part number Replacement TFMTM 1600 PTFE Lens and Spring Washer Kit for ASME B16.5 Class 150 raised faced 2" A5E32462817 3" A5E32462819 4" A5E32462820 6" A5E32462821 Replacement TFMTM 1600 PTFE Lens and Spring Washer Kit for JIS B 2220 10K raised Face 50A A5E32462822 80A A5E32462823 100A A5E32462824 150A A5E32462825 Replacement TFMTM 1600 PTFE Lens and Spring Washer Kit for EN 1092-1 PN10/16 type B1 raised face DN50 A5E32462826 DN80 A5E32462827 DN100 A5E32462828 DN150 A5E32462829 Spare part kits Description Process connection size Part number ISO2852, Hygienic encapsulated antenna Lens and silicon O-ring 2" A5E32572731 3" A5E32572745 4" A5E32572747 DIN11851, Hygienic encapsulated antenna Lens and silicon O-ring DN50 A5E32572758 DN80 A5E32572770 DN100 A5E32572772 DIN11864-1, Hygienic encapsulated antenna Lens and silicon O-ring DN50 A5E32572773 DN80 A5E32572779 DN100 A5E32572782 DIN11864-2/3, Hygienic encapsulated antenna Lens and silicon O-ring DN50 A5E32572785 DN80 A5E32572790 DN100 A5E32572791 Tuchenhagen, Hygienic encapsulated antenna Lens and silicon O-ring Type F A5E32572794 Type N A5E32572795 Note For more information about accessories such as clamps, seals and process connections, please see the catalog on the product page (http://www.siemens.com/LR250).
Service and maintenance 9.4 Disposal SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 177 9.4 Disposal Note Special disposal required The device includes components that require special disposal. • Dispose of the device properly and environmentally through a local waste disposal contractor.
Service and maintenance 9.4 Disposal SITRANS LR250 (PROFIBUS PA) 178 Operating Instructions, 08/2014, A5E32221386-AC
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 179 Diagnosing and troubleshooting 10 10.1 Communication 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 286) 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. Symptom Corrective action The device cannot be programmed via the handheld programmer. • Make sure Write Protection (6.2.1.) is set to the unlock value. You try to set a SITRANS LR250 parameter via remote communications but the parameter remains unchanged. • Ensure Remote Lockout (6.1.1.) is disabled. • Ensure Write Protection (6.2.1.) is set to the unlock value. • See Resetting the PROFIBUS address to 126 (Page 97) to disable an address lock. The PLC value equals the display value but does not correspond to actual material level. • Ensure Scaling in AIFB1 is correctly entered. • Ensure High Calibration Point is correctly entered. • View the echo profile to see if the wrong echo is being selected. If so, see Operation Troubleshooting (Page 184) for possible causes and corrective action. The PLC value is not equal to the displayed value (regardless of actual material level). • Confirm you are looking at the right spot in the PLC. • Ensure scaling has not been programmed into the PLC: all scaling should be performed by the LR250. • Check the network to ensure the PLC is communicating with the LR250. If you continue to experience problems go to our website and check the FAQs for SITRANS LR250: Product page (http://www.siemens.com/LR250), or contact your Siemens representative.
Diagnosing and troubleshooting 10.2 Device status icons SITRANS LR250 (PROFIBUS PA) 180 Operating Instructions, 08/2014, A5E32221386-AC 10.2 Device status icons Icon Priority Level Meaning 1 • Maintenance alarm • Measurement values are not valid 2 • Maintenance warning: maintenance demanded immediately • Measured signal still valid 3 • Maintenance required • Measured signal still valid 1 • Process value has reached an alarm limit 2 • Process value has reached a warning limit 3 • Process value has reached a tolerance limit 1 • Configuration error • Device will not work because one or more parameters/components is incorrectly configured 2 • Configuration warning • Device can work but one or more parameters/components is incorrectly configured 3 • Configuration changed • Device parameterization not consistent with parameterization in project. Look for info text. 1 • Manual operation (local override) • Communication is good; device is in manual mode. 2 • Simulation or substitute value • Communication is good; device is in simulation mode or works with substitute values. 3 • Out of operation • Communication is good; device is out of action. • No data exchange • Write access enabled • Write access disabled
Diagnosing and troubleshooting 10.3 General fault codes SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 181 10.3 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 (*). Code/ Icon Meaning Corrective Action S: 0 * The device was unable to get a measurement within the Fail-safe LOE Timer period. Possible causes: faulty installation, antenna material buildup, foaming/other adverse process conditions, invalid configuration range. • Ensure installation details are correct. • Ensure no antenna material buildup. Clean if necessary. • Adjust process conditions to minimize foam or other adverse conditions. • Correct configuration range. • If fault persists, contact your local Siemens representative. S: 2 * Unable to collect profile because of a power condition that is outside the operating range of the device. Repair required: contact your local Siemens representative. S: 3 Device is nearing its lifetime limit according to the value set in Reminder 1 (Required) (4.2.5.). Replacement is recommended. S: 4 Device is nearing its lifetime limit according to the value set in Reminder 2 (Demanded) (4.2.6.). Replacement is recommended. S: 6 Sensor is nearing its lifetime limit according to the value set in Reminder 1 (Required) (4.3.5.). Replacement is recommended. S: 7 Sensor is nearing its lifetime limit according to the value set in Reminder 2 (Demanded) (4.3.6.). Replacement is recommended.
Diagnosing and troubleshooting 10.3 General fault codes SITRANS LR250 (PROFIBUS PA) 182 Operating Instructions, 08/2014, A5E32221386-AC Code/ Icon Meaning Corrective Action S: 8 Service interval as defined in Reminder 1 (Required) (4.4.5.) has expired. Perform service. 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. Repair required: contact your local Siemens representative. S: 12 Internal temperature of 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. • Fault code will persist until a manual reset is performed using SIMATIC PDM or the LCD interface. S: 14 Input Scaling (2.6.5.) Upper and lower values for AIFB1 are the same. • Check configuration for AIFB1. • Ensure that Upper Value and Lower Value (Input Scaling) are not the same. S: 15 Input Scaling (2.6.5.) Upper and lower values for AIFB2 are the same. • Check configuration for AIFB2. • Ensure that Upper Value and Lower Value (Input Scaling) are not the same. S: 17 Calibration interval as defined in Reminder 1 (Required) (4.5.5.) has expired. Perform calibration. S: 18 Calibration interval as defined in Reminder 2 (Demanded) (4.5.6.) has expired. Perform calibration. S: 28 * Internal device failure caused by a RAM memory error. Repair required: contact your local Siemens representative. S: 29 * EEPROM damaged. Repair required: contact your local Siemens representative.
Diagnosing and troubleshooting 10.3 General fault codes SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 183 Code/ Icon Meaning Corrective Action S: 31 * Flash error. Repair required: contact your local Siemens representative. 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. S: 33 * Factory calibration for the internal temperature sensor has been lost. Repair required: contact your local Siemens representative. S: 34 * Factory calibration for the device has been lost. Repair required: contact your local Siemens representative. S: 35 * Factory calibration for the device has been lost. Repair required: contact your local Siemens representative. S: 36 * Unable to start microwave module. Repair required: contact your local Siemens representative. S: 37 * Measurement hardware problem. Repair required: contact your local Siemens representative. S: 38 * Microwave module hardware failure: unable to calculate distance measurement. Repair required: contact your local Siemens representative. S: 43 * Factory calibration for the radar receiver has been lost. Repair required: contact your local Siemens representative.
Diagnosing and troubleshooting 10.4 Operation troubleshooting SITRANS LR250 (PROFIBUS PA) 184 Operating Instructions, 08/2014, A5E32221386-AC 10.4 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.) Display shows material build-up on antenna • clean the antenna • re-locate SITRANS LR250 Display shows location or aiming: • poor installation • flange not level • Auto False Echo Suppression may be incorrectly applied • check to ensure nozzle is vertical • ensure end of antenna protrudes from end of nozzle • review Auto False Echo Suppression (Page 246) • ensure Auto False Echo Suppression Range is set correctly Display shows antenna malfunction: • temperature too high • physical damage • excessive foam • multiple echoes • check temperature in Maximum Value (3.3.2.) • use foam deflector or stillpipe • relocate • use a defoamer • set Algorithm (2.5.7.1.) to tF (trueFirst echo) Reading does not change, but the level does SITRANS LR250 processing wrong echo, for example, vessel wall, or structural member • re-locate SITRANS LR250 • check nozzle for internal burrs or welds • rotate device 90° • use Auto False Echo Suppression (2.5.10.1.) • if necessary: see Auto False Echo Suppression (Page 246) Measurement is consistently off by a constant amount • setting for Low Calibration Point (2.3.7.1.) not correct • setting for Sensor Offset (2.3.7.3.) not correct • check distance from sensor reference point to Low Calibration Point (2.3.7.1.) • check Sensor Offset (2.3.7.3.) Screen blank power error • check nameplate rating against voltage supply • check power wiring or source too much load resistance • change barrier type, or • remove something from the loop, or • increase supply voltage • reduce wire distance or use larger gage wire
Diagnosing and troubleshooting 10.4 Operation troubleshooting SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 185 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 liquid surface vortexed • 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 (2.3.8.2.) setting incorrect • increase measurement response if possible Reads correctly but occasionally reads high when vessel is not full • detecting close range echo • build up near top of vessel or nozzle • nozzle problem • clean the antenna • use Auto False Echo Suppression (2.5.10.1.) and Auto False Echo Suppression Range (2.5.10.2.) Level reading lower than actual material level • material is within Near Range zone • multiple echoes processed • decrease Near Range (2.5.1.) (minimum value depends on antenna type) • raise SITRANS LR250 • ensure Algorithm (2.5.7.1.) is set to tF (First echo) • vessel near empty and low dK material • ensure Material (1.2.) selection is LIQUID LOW DK • set Position Detect (2.5.7.2.) to Hybrid • check the setting for CLEF Range (2.5.7.4.): see the table below Propogation Factor (2.5.3.) for recommended settings
Diagnosing and troubleshooting 10.4 Operation troubleshooting SITRANS LR250 (PROFIBUS PA) 186 Operating Instructions, 08/2014, A5E32221386-AC
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 187 Technical data 11 Note • Siemens makes every attempt to ensure the accuracy of these specifications but reserves the right to change them at any time. 11.1 Power General Purpose: Intrinsically Safe: Non-Sparking: Non-incendive: Bus powered Per IEC 61158-2 (PROFIBUS PA) Current consumed 15 mA 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) Interference reflections minimum 20 dB lower than the main target reflections
Technical data 11.2 Performance SITRANS LR250 (PROFIBUS PA) 188 Operating Instructions, 08/2014, A5E32221386-AC Measurement Accuracy (measured in accordance with IEC 60770-1) Maximum measured error =3 mm (0.12")1) 2) 3) including hysteresis and non-repeatability Frequency K-band Maximum measurement range4) 1.5" antenna 10 m (32.8 ft)5) 2" threaded PVDF antenna 2"/DN50/50A Flanged encapsulated antenna (FEA) 2", ISO 2852, DN50 DIN11864-1/2/3, DN50 DIN11851,Tuchenhagen Types F and N Hygienic encapsulated antenna (HEA) all other versions 20 m (65.6 ft) Minimum detectable distance 50 mm (2") from end of antenna6) Update time7) minimum 1 second, depending on settings for Response Rate (2.3.8.1.) and LCD Fast Mode (4.9.). Influence of ambient temperature < 0.003% / K (average over full temperature range, referenced to maximum range) Dielectric constant of material measured dK > 1.6 [antenna and application dependent8)] Memory non-volatile EEPROM no battery required 1) The statistical accuracy is typically 3 mm (0.12") 90% of the time, when tested in accordance with IEC 60770-1. 2) Under severe EMI/EMC environments per IEC 61326-1 or NAMUR NE21, the device error may increase to a maximum of 10 mm (0.4"). 3) For 2" threaded PVDF antenna, Flanged encapsulated antennas and Hygienic encapsulated antennas, the maximum measured error <500 mm from the sensor reference point =25 mm (1"). 4) From sensor reference point: see Dimension drawings (Page 195) and Flanged Horn with extension (Page 202). 5) 20 m (65.6 ft) possible in a stillpipe/bypass 6) Minimum range is antenna length +50 mm (2"). See Dimension drawings (Page 195). 7) Reference conditions: Response Rate (2.4.1.) set to FAST, LCD Fast Mode (4.9.) set to ON. 8) For 1.5" (40 mm) antenna and 2" (50 mm) threaded PVDF antenna, 2"/DN50/50A flanged encapsulated antenna, and 2" ISO 2852, DN50 DIN 11864-1/2/3, DN50 DIN11851, Tuchenhagen Types F and N hygienic encapsulated antenna the minimum dK is limited to 3 unless a stillpipe is used. See Flanged horn antenna (Page 200). See Flanged encapsulated antenna (3"/DN80/80A sizes and larger) (Page 206). See Hygienic encapsulated antenna (2" ISO 2852 sanitary clamp) (Page 208).
Technical data 11.3 Interface SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 189 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) Display quality will be degraded in temperatures below –25 °C (–13 °F) and above +65 °C (+149 °F). 11.4 Mechanical Process connection: 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 B1.20.1), R (BSPT, EN 10226-1) or G (BSPP, EN ISO 228-1) or 3" NPT (ASME B1.20.1), R (BSPT, EN 10226-1) or G (BSPP, EN ISO 228-1) Flange connection (flat-face) Materials 2, 3, 4" (ASME 150 lb, 300 lb) DN50, DN80, DN100 (PN 10/16, PN 25/40) 50A, 80A, 100A (JIS 10K) 316L /1.4404 or 316L /1.4435 stainless steel Flange connection (raised face) Materials DN50, DN80, DN100, DN150 (PN 10/16, PN 25/40) 1.4404 or 1.4435 stainless steel, optional Alloy N06022/2.4602 (Hastelloy®C-22 or equivalent) Flanged encapsulated antenna (FEA) connection (raised face) Materials 2, 3, 4, 6" (ASME 150 lb); DN50, DN80, DN100, DN150 (PN10/16); 50A, 80A, 100A, 150A (JIS 10K) 316L /1.4404 or 316L /1.4435 stainless steel Hygienic encapsulated antenna (HEA) connection Materials ISO 2852 (2, 3, 4") DIN 11851 (DN50, DN80, DN100) DIN 11864-1/2/3 (DN50, DN80, DN100) Tuchenhagen (Type F [50 mm] and Type N [68 mm]) 316L /1.4404 or 316L /1.4435 stainless steel ISO 2852 (2, 3, 4") DIN 11864-3 (DN50, DN80, DN100) clamp: 304/1.4301 stainless steel
Technical data 11.4 Mechanical SITRANS LR250 (PROFIBUS PA) 190 Operating Instructions, 08/2014, A5E32221386-AC Tuchenhagen (Type F [50 mm] and Type N [68 mm]) 316L /1.4404 or 316L/1.4435 stainless steel clamp: 304/1.4301 stainless steel nut connection: 303/1.4305 stainless steel DIN 11851/11864-1 (DN50, DN80, DN100) captive slotted nut connection: 304L/1.4307 DIN 11864-2 (DN50, DN80, DN100) mounting nuts and bolts: 304/1.4301 stainless steel Antenna: Horn Materials standard 1.5" (40 mm), 2" (50 mm), 3" (80 mm), and 4" (100 mm) horn, optional 100 mm (4") horn extension 316L stainless steel with PTFE emitter optional Alloy N06022/2.4602 (Hastelloy®C-22 or equivalent) with PTFE emitter Threaded PVDF antenna Wetted materials 2" (50 mm) PVDF (Polyvinylidene fluoride) Flanged encapsulated antenna Wetted materials 316L /1.4404 or 316L /1.4435 stainless steel TFMTM 1600 PTFE lens Hygienic encapsulated antenna Wetted material 316L/1.4404 or 316L/1.4435 stainless steel TFMTM 1600 PTFE (plus chosen seal) Enclosure 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 Weight (excluding extensions): 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 (12.1 lb) 3" threaded connection with 3" horn antenna approximately 7.0 kg (15.4 lb) 2" threaded PVDF antenna approximately 3.3 kg (7.27 lb) DN50 PN 10/16 or 2" 150 lb flat-face flange with 2" horn antenna approximately 8 kg (17.6 lb) DN100 PN 25/40 or 4" ASME 300 lb flat-face flange with 4" horn antenna approximately 17.4 kg (38.3 lb) DN50 PN 10/16 raised-face flange with 2" horn antenna approximately 6 kg (13.2 lb) DN100 PN 25/40 raised-face flange with 4" horn antenna approximately 11.3 kg (24.9 lb)
Technical data 11.5 Environmental SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 191 2" ASME 150 lb FEA approximately 7.0 kg (15.4 lb) 3" ASME 150 lb FEA approximately 10.7 kg (23.6 lb) 4" ASME 150 lb FEA approximately 13.1 kg (28.9 lb) 6" ASME 150 lb FEA approximately 17.7 kg (39 lb) DN50 PN 10/16 FEA approximately 7.1 kg (15.7 lb) DN80 PN 10/16 FEA approximately 10.1 kg (22.3 lb) DN100 PN 10/16 FEA approximately 11.1 kg (24.5 lb) DN150 PN 10/16 FEA approximately 15.9 kg (35.1 lb) 50 A JIS 10K FEA approximately 6.5 kg (14.3 lb) 80 A JIS 10K FEA approximately 9 kg (19.8 lb) 100 A JIS 10K FEA approximately 10.1 kg (22.3 lb) 150 A JIS 10K FEA approximately 16.3 kg (35.9 lb) 2" ISO2852 HEA approximately 4.7 kg (10.4 lb) 3" ISO2852 HEA approximately 6.3 kg (13.9 lb) 4" ISO2852 HEA approximately 6.8 kg (15 lb) DN50 DIN 11864-1 HEA approximately 4.8 kg (10.6 lb) DN80 DIN 11864-1 HEA approximately 6.7 kg (14.8 lb) DN100 DIN 11864-1 HEA approximately 7.1 kg (15.7 lb) DN50 DIN 11864-2 HEA approximately 5.0 kg (11 lb) DN80 DIN 11864-2 HEA approximately 7.2 kg (15.9 lb) DN100 DIN 11864-2 HEA approximately 7.9 kg (17.4 lb) DN50 DIN 11864-3 HEA approximately 4.8 kg (10.6 lb) DN80 DIN 11864-3 HEA approximately 6.6 kg (14.6 lb) DN100 DIN 11864-3 HEA approximately 7.2 kg (15.9 lb) DN50 DIN 11851 HEA approximately 4.8 kg (10.6 lb) DN80 DIN 11851 HEA approximately 6.8 kg (15 lb) DN100 DIN 11851 HEA approximately 7.2 kg (15.9 lb) Tuchenhagen Type F HEA approximately 4.8 kg (10.6 lb) Tuchenhagen Type N HEA approximately 4.9 kg (10.8 lb) a) For use with 1.5" (40 mm) horn antennas only.
Technical data 11.5 Environmental SITRANS LR250 (PROFIBUS PA) 192 Operating Instructions, 08/2014, A5E32221386-AC 11.5 Environmental Note • For the specific configuration you are about to use or install, check transmitter nameplate and see Approvals (Page 193). • Use appropriate conduit seals to maintain IP or NEMA rating. Location indoor/ outdoor Altitude 5000 m (16,404 ft) max. Ambient temperature −40 to +80 °C (−40 to +176 °F) Relative humidity suitable for outdoor Type 4X/NEMA 4X, Type 6/NEMA 6, IP67, IP68 enclosure (see note above) Installation category I Pollution degree 4 11.6 Process Note The maximum temperature is dependent on the process connection, antenna materials, and vessel pressure. For more detailed information see Maximum Process Temperature Chart (Page 251) and Process Pressure/Temperature derating curves (Page 253). Temperature at process connection Standard Horn antenna (Threaded or Flanged): with FKM O-ring −40 to +200 °C (−40 to +392 °F) with FFKM O-ring −20 to +200 °C (−4 to +392 °F) 2" NPT / BSPT / G Threaded PVDF antenna: −40 to +80 °C (−40 to +176 °F) Flanged encapsulated antenna (FEA) -40 to +170 °C (−40 to +338 °F) Hygienic encapsulated antenna (HEA) -40 to +170 °C (−40 to +338 °F) with FKM seals used on process connection: -20 to +170 °C (-4 to +338 °F) with EPDM seals used on process connection: -40 to +120 °C (-40 to +248 °F) Pressure (vessel) Refer to process connection tag and Process Pressure/Temperature derating curves (Page 253).
Technical data 11.7 Approvals SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 193 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, RCM N. America, Europe Radio Europe (R&TTE), FCC, Industry Canada Hazardous Intrinsically safe (Page 46) 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. 1, Groups A, B, C, D Class II, Div. 1, Groups E, F, G Class III T4 US/Canada INMETRO DNV 12.0087 X Ex ia IIC T4 Ga Ex ia ta IIIC T100 °C Da IP65/IP67 -40 °C ≤ Ta ≤ +80 °C DNV #OCP 0017 ABNT NBR IEC 60079-0:2008, ABNT NBR IEC 60079-11:2009, ABNT NBR IEC 60079-26:2008, ABNT NBR IEC 60079-31:2011 Brazil NEPSI Ex ia IIC T4 Ga Ex iaD 20 T90 IP67 DIP A20 TA 90 ºC China Non-Sparking (Page 49) ATEX II 3 G, Ex nA IIC T4 Gc Europe NEPSI Ex nA IIC T4 Gc China Non-incendive (Page 49) FM/CSA Class I, Div. 2, Groups A, B, C, D T5 US/Canada Marine Lloyd's Register of Shipping ABS Type Approval BV Type Approval
Technical data 11.8 Programmer (infrared keypad) SITRANS LR250 (PROFIBUS PA) 194 Operating Instructions, 08/2014, A5E32221386-AC 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. Siemens Milltronics Infrared IS (Intrinsically Safe) Handheld Programmer for hazardous and all other locations (battery is non-replaceable). Approvals CE FM/CSA Class I, II, III, Div. 1, Gr. A to G T6 ATEX II 1GD Ex ia IIC T4 Ga Ex iaD 20 T135 °C IECEx Ex ia IIC T4 Ga Ex iaD 20 T135 °C INMETRO Ex ia IIC T4 Ga Ex ia IIIC T135 °C Da Ambient temperature −20 to +50 °C (−5 to +122 °F) Interface proprietary infrared pulse signal Power 3 V non-replaceable lithium battery Weight 150 g (0.3 lb) Color black Part number 7ML1930-1BK
Dimension drawings 12.1 Threaded horn antenna SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 195 Dimension drawings 12 12.1 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. • Signal amplitude increases with horn diameter, so use the largest practical size. • Optional extensions can be installed below the threads.
Dimension drawings 12.1 Threaded horn antenna SITRANS LR250 (PROFIBUS PA) 196 Operating Instructions, 08/2014, A5E32221386-AC ① ½" NPT cable entry, or M20 cable gland ⑦ enclosure/electronics ② threaded cover ⑧ retaining collar ③ 2" horn ⑨ process connection tag ④ 3" horn ⑩ horn ⑤ 4" horn ⑪ sensor reference point ⑥ horn O.D. Dimensions in mm (inch)
Dimension drawings 12.1 Threaded horn antenna SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 197 Threaded horn dimensions Antenna Type Antenna O.D. in mm (inch) Height to sensor reference point, in mm (inch) a) Beam Angle (°)b) Measurement range, in m (ft) 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 (65.6) a) Height from bottom of horn to sensor reference point as shown: see dimension drawing. b) -3dB in the direction of the polarization axis. For an illustration, see Polarization reference point (Page 31).
Dimension drawings 12.2 Threaded horn antenna with extension SITRANS LR250 (PROFIBUS PA) 198 Operating Instructions, 08/2014, A5E32221386-AC 12.2 Threaded horn antenna with extension ① ½" NPT cable entry, or M20 cable gland ⑦ enclosure/electronics ② threaded cover ⑧ retaining collar ③ 2" horn ⑨ process connection tag ④ 3" horn ⑩ horn ⑤ 4" horn ⑪ sensor reference point ⑥ horn O.D. Dimensions in mm (inch)
Dimension drawings 12.2 Threaded horn antenna with extension SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 199 Threaded horn with extension dimensions Antenna Type Antenna O.D. in mm (inch) Height to sensor reference point, in mm (inch) a) Beam Angle (°) b) Measurement range in m (ft) 1-1/2" threaded connection 2" threaded connection 3" threaded connection 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 (3.73) N/A 354 (13.94) 368 (14.49) 8 20 (65.6) a) Height from bottom of horn to sensor reference point as shown: see dimension drawing. b) -3dB in the direction of the polarization axis. For an illustration, see Polarization reference point (Page 31).
Dimension drawings 12.3 Flanged horn antenna SITRANS LR250 (PROFIBUS PA) 200 Operating Instructions, 08/2014, A5E32221386-AC 12.3 Flanged horn antenna ① ½" NPT cable entry, or M20 cable gland ⑥ flange ② threaded cover ⑦ name-plate ③ horn ⑧ retaining collar ④ horn O.D. ⑨ process connection tag ⑤ enclosure/electronics ⑩ sensor reference point Dimensions in mm (inch)
Dimension drawings 12.3 Flanged horn antenna SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 201 Flanged Horn dimensions Nominal horn size in mm (inch) Horn O.D. in mm (inch) Height to sensor reference point, in mm (inch)a) Beam angle (°)b) Measurement range, in m (ft) Stainless steel flange: raised or flat-face Optional alloy flange c) 50 (2) 47.8 (1.88) 135.3 (5.32) 138.3 (5.44) 15 20 (65.6) 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 a)Height from bottom of horn to sensor reference point as shown: see Flanged horn antenna with extension (Page 202). See also Raised-Face flange per EN 1092-1 for flanged horn antenna (Page 228), or Flat-Face flange (Page 233). b) -3dB in the direction of the polarization axis (see Polarization reference point (Page 31) for an illustration). c) Optional alloy N06022/2.4602 (Hastelloy® C-22 or equivalent). See Raised-Face Flange Dimensions (Page 228). Note Heights to sensor reference point are for stainless steel flanges. For optional alloy N06022/2.4602 (Hastelloy© C-22 or equivalent) see Flanged Horn dimensions above.
Dimension drawings 12.4 Flanged horn antenna with extension SITRANS LR250 (PROFIBUS PA) 202 Operating Instructions, 08/2014, A5E32221386-AC 12.4 Flanged horn antenna with extension ① ½" NPT cable entry, or M20 cable gland ⑥ flange ② threaded cover ⑦ name-plate ③ horn ⑧ retaining collar ④ horn O.D. ⑨ process connection tag ⑤ enclosure/electronics ⑩ sensor reference point Dimensions in mm (inch)
Dimension drawings 12.4 Flanged horn antenna with extension SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 203 Flanged horn with extension dimensions Nominal horn size in mm (inch) Horn O.D. in mm (inch) Height to sensor reference point,, in mm (inch) a) Beam angle (°)b) Measurement range, in m (ft) Stainless steel flange: raised or flat-face Optional alloy flange c) 50 (2) 47.8 (1.88) 235.3 (9.26) 238.3 (9.38) 15 20 (65.6) 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 a)Height from bottom of horn to sensor reference point as shown: See also Raised-Face flange per EN 1092-1 for flanged horn antenna (Page 228) or Flat-Face Flange. (Page 233) b) -3dB in the direction of the polarization axis (see Polarization reference point (Page 31) for an illustration). c) Optional alloy N06022/2.4602 (Hastelloy® C-22 or equivalent). See Raised-Face flange per EN 1092-1 for flanged horn antenna (Page 228). Note Heights to sensor reference point are for stainless steel flanges. For optional alloy N06022/2.4602 (Hastelloy© C-22 or equivalent) see Flanged Horn dimensions above.
Dimension drawings 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only) SITRANS LR250 (PROFIBUS PA) 204 Operating Instructions, 08/2014, A5E32221386-AC 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only) ① ½" NPT cable entry, or M20 cable gland ⑥ flange ② threaded cover ⑦ see table below ③ see table below ⑧ see table below ④ enclosure ⑨ sensor reference point ⑤ retaining collar ⑩ see table below Dimensions in mm (inch)
Dimension drawings 12.5 Flanged encapsulated antenna (2"/DN50/50A sizes only) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 205 Flanged encapsulated antenna (2"/DN50/50A) dimensions Flange size ③ mm (inch) ⑦ mm (inch) ⑧ mm (inch) ⑩ mm (inch)1) 2"/DN50/50A 263 (10.35) 223 (8.78) 274 (10.79) 11 (0.43) 1) 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)] 2" 150 LB 152 (5.98) 50 (1.97) 12.8 10 (32.8)2) DN50 PN10/16 165 (6.50) 50A 10K 155 (6.10) 1) -3 dB in the direction of the polarization axis. 2) 20m if installed in stillpipe See Raised-Face Flange per EN 1092-1, (Page 230)and Polarization reference point (Page 31).
Dimension drawings 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) SITRANS LR250 (PROFIBUS PA) 206 Operating Instructions, 08/2014, A5E32221386-AC 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) ① ½" NPT cable entry, or M20 cable gland ⑥ retaining collar ② threaded cover ⑦ see table below ③ see table below ⑧ see table below ④ enclosure ⑨ sensor reference point ⑤ flange ⑩ see table below Dimensions in mm (inch)
Dimension drawings 12.6 Flanged encapsulated antenna (3"/DN80/80A sizes and larger) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 207 Flanged encapsulated antenna (3"/DN80/80A and larger) dimensions Flange size 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. Flange size Flange class Flange O.D. [mm (inch)] Antenna aperture size [mm (inch)] Beam angle (°)1) Measurement range [m (ft)] 3" 150 LB 190 (7.48) 75 (2.95) 9.6 20 (65.6) DN80 PN10/16 200 (7.87) 80A 10K 185 (7.28) 4" 150 LB 230 (9.06) 75 (2.95) 9.6 20 (65.6) DN100 PN10/16 220 (8.66) 100A 10K 210 (8.27) 6" 150 LB 280 (11.02) 75 (2.95) 9.6 20 (65.6) DN150 PN10/16 285 (11.22) 150A 10K 280 (11.02) 1) -3 dB in the direction of the polarization axis. See Raised-Face Flange per EN 1092-1 (Page 230), and Polarization reference point (Page 31).
Dimension drawings 12.7 Hygienic encapsulated antenna (2" ISO 2852 sanitary clamp) SITRANS LR250 (PROFIBUS PA) 208 Operating Instructions, 08/2014, A5E32221386-AC 12.7 Hygienic encapsulated antenna (2" ISO 2852 sanitary clamp) Dimensions in mm (inch)
Dimension drawings 12.8 Hygienic encapsulated antenna (3" ISO 2852 sanitary clamp) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 209 12.8 Hygienic encapsulated antenna (3" ISO 2852 sanitary clamp) Dimensions in mm (inch)
Dimension drawings 12.9 Hygienic encapsulated antenna (4" ISO 2852 sanitary clamp) SITRANS LR250 (PROFIBUS PA) 210 Operating Instructions, 08/2014, A5E32221386-AC 12.9 Hygienic encapsulated antenna (4" ISO 2852 sanitary clamp) Dimensions in mm (inch)
Dimension drawings 12.10 Hygienic encapsulated antenna (DN 50 nozzle/slotted nut to DIN 11851) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 211 12.10 Hygienic encapsulated antenna (DN 50 nozzle/slotted nut to DIN 11851) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.11 Hygienic encapsulated antenna (DN 80 nozzle/slotted nut to DIN 11851) SITRANS LR250 (PROFIBUS PA) 212 Operating Instructions, 08/2014, A5E32221386-AC 12.11 Hygienic encapsulated antenna (DN 80 nozzle/slotted nut to DIN 11851) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.12 Hygienic encapsulated antenna (DN 100 nozzle/slotted nut to DIN 11851) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 213 12.12 Hygienic encapsulated antenna (DN 100 nozzle/slotted nut to DIN 11851) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.13 Hygienic encapsulated antenna (DN 50 aseptic slotted nut to DIN 11864-1) SITRANS LR250 (PROFIBUS PA) 214 Operating Instructions, 08/2014, A5E32221386-AC 12.13 Hygienic encapsulated antenna (DN 50 aseptic slotted nut to DIN 11864-1) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.14 Hygienic encapsulated antenna (DN 80 aseptic slotted nut to DIN 11864-1) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 215 12.14 Hygienic encapsulated antenna (DN 80 aseptic slotted nut to DIN 11864-1) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.15 Hygienic encapsulated antenna (DN 100 aseptic slotted nut to DIN 11864- 1) SITRANS LR250 (PROFIBUS PA) 216 Operating Instructions, 08/2014, A5E32221386-AC 12.15 Hygienic encapsulated antenna (DN 100 aseptic slotted nut to DIN 11864- 1) Dimensions in mm (inch) Note Cut out of process connection and placement of threaded nut are shown for illustration purposes only.
Dimension drawings 12.16 Hygienic encapsulated antenna (DN 50 aseptic flange to DIN 11864-2) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 217 12.16 Hygienic encapsulated antenna (DN 50 aseptic flange to DIN 11864-2) Dimensions in mm (inch) Note Cut out of process connection and flange are shown for illustration purposes only.
Dimension drawings 12.17 Hygienic encapsulated antenna (DN 80 aseptic flange to DIN 11864-2) SITRANS LR250 (PROFIBUS PA) 218 Operating Instructions, 08/2014, A5E32221386-AC 12.17 Hygienic encapsulated antenna (DN 80 aseptic flange to DIN 11864-2) Dimensions in mm (inch) Note Cut out of process connection and flange are shown for illustration purposes only.
Dimension drawings 12.18 Hygienic encapsulated antenna (DN 100 aseptic flange to DIN 11864-2) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 219 12.18 Hygienic encapsulated antenna (DN 100 aseptic flange to DIN 11864-2) Dimensions in mm (inch) Note The cut out of the process connection and the flange are shown for illustration purposes only.
Dimension drawings 12.19 Hygienic encapsulated antenna (DN 50 aseptic clamp to DIN 11864-3) SITRANS LR250 (PROFIBUS PA) 220 Operating Instructions, 08/2014, A5E32221386-AC 12.19 Hygienic encapsulated antenna (DN 50 aseptic clamp to DIN 11864-3)
Dimension drawings 12.20 Hygienic encapsulated antenna (DN 80 aseptic clamp to DIN 11864-3) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 221 Dimensions in mm (inch) Note Cut out of process connection is shown for illustration purposes only.
Dimension drawings 12.20 Hygienic encapsulated antenna (DN 80 aseptic clamp to DIN 11864-3) SITRANS LR250 (PROFIBUS PA) 222 Operating Instructions, 08/2014, A5E32221386-AC 12.20 Hygienic encapsulated antenna (DN 80 aseptic clamp to DIN 11864-3) Dimensions in mm (inch) Note Cut out of process connection is shown for illustration purposes only.
Dimension drawings 12.21 Hygienic encapsulated antenna (DN 100 aseptic clamp to DIN 11864-3) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 223 12.21 Hygienic encapsulated antenna (DN 100 aseptic clamp to DIN 11864-3) Dimensions in mm (inch) Note Cut out of process connection is shown for illustration purposes only.
Dimension drawings 12.22 Hygienic encapsulated antenna (Tuchenhagen Type N) SITRANS LR250 (PROFIBUS PA) 224 Operating Instructions, 08/2014, A5E32221386-AC 12.22 Hygienic encapsulated antenna (Tuchenhagen Type N) Dimensions in mm (inch)
Dimension drawings 12.23 Hygienic encapsulated antenna (Tuchenhagen Type F) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 225 12.23 Hygienic encapsulated antenna (Tuchenhagen Type F) Dimensions in mm (inch)
Dimension drawings 12.24 Threaded PVDF antenna SITRANS LR250 (PROFIBUS PA) 226 Operating Instructions, 08/2014, A5E32221386-AC 12.24 Threaded PVDF antenna
Dimension drawings 12.25 Threaded connection markings SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 227 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 31) for an illustration. c) 20m when installed in stillpipe. 12.25 Threaded connection markings With the exception of the threaded PVDF antenna, threaded connection markings are found on the flat face/faces of the process connection. Serial number: a unique number allotted to each process connection, including the date of manufacture (MMDDYY) followed by a number from 001 to 999, (indicating the sequential unit produced).
Dimension drawings 12.26 Raised-Face flange per EN 1092-1 for flanged horn antenna SITRANS LR250 (PROFIBUS PA) 228 Operating Instructions, 08/2014, A5E32221386-AC 12.26 Raised-Face flange per EN 1092-1 for flanged horn antenna Stainless steel or optional alloy N06022/2.4602 (Hastelloy® C-22) ① angle of adjacent bolt holes ⑥ bolt hole circle diameter ② bolt hole diameter ⑦ facing height ③ bolt hole circle diameter ⑧ facing diameter ④ waveguide mounting hole ⑨ sensor reference point ⑤ Flange O.D. ⑩ thickness
Dimension drawings 12.26 Raised-Face flange per EN 1092-1 for flanged horn antenna SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 229 Raised-Face flange dimensions Pipe size Flange bolt hole pattern ⑤ Flange O.D. (mm) ③ Bolt hole circle Ø (mm) ② Bolt hole Ø (mm) No. of bolts ① Angle of adjacent bolt holes ⑧ Facing Ø (mm) ⑩ Thickness (mm) DN50 PN10/PN16 165 125 18 4 90 102 18 DN80 PN10/PN16 200 160 18 8 45 138 20 DN100 PN10/PN16 220 180 18 8 45 158 20 DN150 PN10/PN16 285 240 22 8 45 212 22 DN50 PN25/PN40 165 160 18 4 90 138 20 DN80 PN25/PN40 200 160 18 8 45 138 24 DN100 PN25/PN40 235 190 22 8 45 162 24 DN150 PN25/PN40 300 250 26 8 45 218 28 Raised-Face flange markings Blind Flange Markings (Optional Manufacturer’s Logo [optional]; Flange Standard; Nominal Size; Material; Heat Code) Machining Identification Welded Assembly Identification a) Serial no. Logo Flange series Flange series Heat Code no. Facing Manufacturer’s logo; EN 1092-1 05 ‘B1’; ‘DN50’ ‘PN16’ ‘1.4404 or 1.4435’ A1B2C3 mmddyyxxx xxxxx xxxxx A1B2C3 RF a) When flange material is alloy N06022/2.4602, additional material and heat code identification is provided. The flange markings are located around the outside edge of the flange. 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). Flange series: the Siemens Milltronics drawing identification. Heat code: a flange material batch code identification.
Dimension drawings 12.27 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna SITRANS LR250 (PROFIBUS PA) 230 Operating Instructions, 08/2014, A5E32221386-AC 12.27 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna Stainless steel ① angle of adjacent bolt holes ⑤ flange O.D. ② bolt hole diameter ⑥ facing height ③ bolt hole circle diameter ⑦ facing diameter ④ antenna ⑧ flange thickness
Dimension drawings 12.27 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 231 Raised-Face flange dimensions Pipe size Flange class ⑤ Flange O.D. [mm (inch)] ③ Bolt hole circle Ø [mm (inch)] ② Bolt hole Ø [mm (inch)] No. of bolt holes ① Angle of adjacent bolt holes ⑦ Facing Ø [mm (inch)] ⑨ Flange thickness [mm (inch)] ⑥ Flange facing thickness [mm (inch)] 2" 150 LB 152 (5.98) 120.7 (4.75) 19 (0.75) 4 90 92.1 (3.63) 20.6 (0.81) 1.5 (0.06) 3" 190 (7.48) 152.4 (6.00) 127 (5.00) 25.9 (1.02) 2 (0.08) 4" 230 (9.06) 190.5 (7.50) 8 45 157.2 (6.19) 2 (0.08) 6" 280 (11.02) 241.3 (9.50) 22.2 (0.87) 215.9 (8.50) 26.9 (1.06) 1.5 (0.06) DN50 PN10/16 155 (6.10) 125 (4.92) 18 (0.71) 4 90 102 (4.02) 18 (0.71) 2 (0.08) DN80 200 (7.87) 160 (6.30) 8 45 138 (5.43) 20 (0.79) 2 (0.08) DN100 220 (8.66) 180 (7.09) 158 (6.22) 2 (0.08) DN150 285 (11.22) 240 (9.45) 22 (0.87) 212 (8.35) 22 (0.87) 2 (0.08) 50A 10K 155 (6.10) 120 (4.72) 19 (0.75) 4 90 96 (3.78) 16 (0.63) 2 (0.08) 80A 185 (7.28) 150 (5.91) 8 45 126 (4.96) 18 (0.71) 2 (0.08) 100A 210 (8.27) 175 (6.89) 151 (5.94) 2 (0.08) 150A 280 (11.02) 240 (9.45) 23 (0.91) 212 (8.35) 22 (0.87) 2 (0.08)
Dimension drawings 12.27 Raised-Face flange per EN 1092-1 for flanged encapsulated antenna SITRANS LR250 (PROFIBUS PA) 232 Operating Instructions, 08/2014, A5E32221386-AC Raised-Face flange markings Blind Flange Markings (Optional Manufacturer’s Logo [optional]; Flange Standard; Nominal Size; Material; Heat Code) Machining Identification Welded Assembly Identification Serial no. Logo Flange series Flange series Heat Code no. Facing Manufacturer’s logo; EN 1092-1 05 ‘B1’; ‘DN50’ ‘PN16’ ‘1.4404 or 1.4435’ A1B2C3 mmddyyxxx xxxxx xxxxx A1B2C3 RF The flange markings are located around the outside edge of the flange. 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). Flange series: the Siemens Milltronics drawing identification. Heat code: a flange material batch code identification.
Dimension drawings 12.28 Flat-Face flange SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 233 12.28 Flat-Face flange
Dimension drawings 12.28 Flat-Face flange SITRANS LR250 (PROFIBUS PA) 234 Operating Instructions, 08/2014, A5E32221386-AC 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" DN50 EN PN16 165 mm 125 mm 18 mm 4 24.4 mm DN80 EN PN16 200 mm 160 mm 18 mm 8 31.8 mm DN100 EN PN16 220 mm 180 mm 18 mm 8 31.8 mm DN50 EN PN40 165 mm 125 mm 18 mm 4 25.4 mm DN80 EN PN40 200 mm 160 mm 18 mm 8 31.8 mm DN100 EN PN40 235 mm 190 mm 22 mm 8 38.1 mm 50A JIS 10K 155 mm 120 mm 19 mm 4 23.8 mm 80A JIS 10K 185 mm 150 mm 19 mm 8 24.4 mm 100A JIS 10K 210 mm 175 mm 19 mm 8 28.5 mm a) A 2" flange is designed to fit a 2" pipe: for actual flange dimensions see Flange O.D. Flange markings located around the outside edge of the flat faced flange identify the flange assembly on which the device is mounted.
Dimension drawings 12.28 Flat-Face flange SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 235 Flat-Face flange markings Flat Face Flange Identification Welded Assembly Identification Serial No. Logo Flange series Material Heat code Flange series Heat code no. Series Nominal size MMDDYYXXX 25556 2 150 316L/ 1.4404 or 316L/ 1.4435 A1B2C3 25546 A1B2C3 DN80 PN16 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). Flange series: The Siemens Milltronics drawing identification. Nominal size: The flange size followed by the hole pattern for a particular flange class. For example: • A 2 inch ASME B16.5 150 lb class flange (North America) • A DN80 EN 1092-1 PN16 class flange (Europe) Material: The basic flange material (AISI or EU material designation). North American material codes are followed by European ones. For example, material designation 316L/1.4404. Heat code: A flange material batch code identification.
Dimension drawings 12.29 Aseptic/hygienic flange DN50, DN80, DN100 for DIN 11864-2 SITRANS LR250 (PROFIBUS PA) 236 Operating Instructions, 08/2014, A5E32221386-AC 12.29 Aseptic/hygienic flange DN50, DN80, DN100 for DIN 11864-2 Aseptic/hygienic flange DN50 Dimensions in mm (inch)
Dimension drawings 12.29 Aseptic/hygienic flange DN50, DN80, DN100 for DIN 11864-2 SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 237 Aseptic/hygienic flange DN80 Dimensions in mm (inch)
Dimension drawings 12.29 Aseptic/hygienic flange DN50, DN80, DN100 for DIN 11864-2 SITRANS LR250 (PROFIBUS PA) 238 Operating Instructions, 08/2014, A5E32221386-AC Aseptic/hygienic flange DN100 Dimensions in mm (inch)
Dimension drawings 12.30 Process connection tag (pressure rated versions) SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 239 12.30 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) 11.0 BAR Maximum Allowable Working Pressure at Design Temperature for the device DESIGN TEMP. (TS) 200 ºC Maximum Allowable Working Temperature MINIMUM PROCESS 15.9 BAR AT 40 ºC Minimum Wetted Process Conditions TEST PRESSURE (PT) 22.7 BAR Production Test Pressure TEST DATE 10/11/11 Date of Pressure Test (Year/Month/Day) CONNECTION SERIES ASME B16.5 Flange Series: dimensional pattern based on ASME B16.5 flange standards PROCESS SERIES 25546 Pressure Tag Family Series WETTED NON-METALLICS TFM Antenna Emitter WETTED METALLICS 316L Process Connection Material(s) WETTED SEALS FKM Seal Material(s) ● Minimum Wetted Process Conditions: the minimum pressure and temperature to which the device assembly may be exposed in the process, and continue to provide a pressure-retaining function. ● Pressure Tag Family Series: the identification number used to indicate specific process connection information relating to operating conditions. ● For Flanged encapsulated antenna: this information is laser-etched on antenna body BACK FACE Sample Text Comments/Explanation CRN 0Fxxxxx.5 Canadian Registration Number (CRN)
Dimension drawings 12.30 Process connection tag (pressure rated versions) SITRANS LR250 (PROFIBUS PA) 240 Operating Instructions, 08/2014, A5E32221386-AC
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 241 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 107) 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.) Radar level measurement uses the time of flight principle to determine distance to a material surface. The device transmits a signal and waits for the return echo. The transit time is directly proportional to the distance from the material. Pulse radar uses polarized electromagnetic waves. Microwave pulses are emitted from the antenna at a fixed repetition rate, and reflect off the interface between two materials with different dielectric constants (the atmosphere and the material being monitored). Electromagnetic wave propagation is virtually unaffected by temperature or pressure changes, or by changes in the vapor levels inside a vessel. Electromagnetic waves are not attenuated by dust. SITRANS LR250 consists of an enclosed electronic circuit coupled to an antenna and process connection. The electronic circuit generates a radar signal (25 GHz) that is directed to the antenna. The signal is emitted from the antenna, and the reflected echoes are digitally converted to an echo profile. The profile is analyzed to determine the distance from the material surface to the sensor reference point. See Dimension drawings (Page 195). This distance is used as a basis for the display of material level and mA output.
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) 242 Operating Instructions, 08/2014, A5E32221386-AC 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. Process Intelligence is able to differentiate between the true microwave reflections from the surface of the material and unwanted reflections being returned from obstructions such as seam welds or supports within a vessel. The result is repeatable, fast and reliable measurement. This technology was developed as result of field data gained over some twenty years from more than 1,000,000 installations in many industries around the world. Higher order mathematical techniques and algorithms are used to provide intelligent processing of microwave reflection profiles. This "knowledge based" technique produces superior performance and reliability. 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 246) for more details.
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 243 ① default TVT ② echo profile ③ material level ④ echo marker The device characterizes all echoes that rise above the TVT as potential good echoes. Each peak is assigned a rating based on its strength, area, height above the TVT, and reliability, amongst other characteristics. 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). There are three options: ● Center ● Hybrid ● CLEF (Constrained Leading Edge Fit)
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) 244 Operating Instructions, 08/2014, A5E32221386-AC Center Uses center of the echo. Hybrid Uses the Center algorithm for the top part of the vessel, and the CLEF algorithm for the part nearest the vessel bottom, according to the setting for CLEF range. CLEF (Constrained Leading Edge Fit) ● Uses the leading edge of the echo. ● Is used mainly to process the echo from materials with a low dK value. In an almost empty flat-bottomed vessel, a low dK material may reflect an echo weaker than the echo from the vessel bottom. The echo profile shows these echoes merging. The device may then report a material level equal to or lower than empty. The CLEF algorithm enables the device to report the level correctly. Example: CLEF off: Position set to Hybrid Vessel height: 1.5 m; CLEF range set to 0 (Center algorithm gives the same result.) ① default TVT ② material echo ③ vessel bottom echo selected ④ echo marker
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 245 Example: CLEF enabled Vessel height: 1.5 m; CLEF range set to 0.5 m ① default TVT ② material echo selected ③ vessel bottom echo ④ echo marker 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 CLEF range ④ Low calibration point ② (Center algorithm applied) ⑤ Sensor reference point ③ High calibration point ⑥ Low Calibration Point (process empty level)
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) 246 Operating Instructions, 08/2014, A5E32221386-AC A.2.4 Echo Threshold Confidence (2.5.9.1.) describes the quality of an echo. Higher values represent higher quality. Echo Threshold defines the minimum confidence value required for an echo to be accepted as valid and evaluated. A.2.5 Echo Lock If the echo selected by Algorithm is within the Echo Lock window, the window is centered about the echo, which is used to derive the measurement. In radar applications, two measurement verification options are used: Lock Off SITRANS LR250 responds immediately to a new selected echo (within the restrictions set by the Maximum Fill / Empty Rate), but measurement reliability is affected. Material Agitator A new measurement outside the Echo Lock Window must meet the sampling criteria before the window will move to include it. The other available options, Maximum Verification and Total Lock are not recommended for radar. A.2.6 Auto False Echo Suppression Note • For detailed instructions on using this feature via PDM see Auto False Echo Suppression (Page 88). • For detailed instructions on using this feature via the handheld programmer see Auto False Echo Suppression (2.5.10.1.). Auto False Echo Suppression is designed to learn a specific environment (for example, a particular vessel with known obstructions), and in conjunction with Auto False Echo Suppression Range to remove false echoes appearing in front of the material echo. The material level should be below all known obstructions at the moment when Auto False Echo Suppression learns the echo profile. Ideally the vessel should be empty or almost empty, and if an agitator is present, it should be running. The device learns the echo profile over the whole measurement range and the TVT is shaped around all echoes present at that moment.
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 247 Auto False Echo Suppression Range (2.5.10.2.) Auto False Echo Suppression Range specifies the range within which the learned TVT is applied. Default TVT is applied over the remainder of the range. The learned TVT screens out the false echoes caused by obstructions. The default TVT allows the material echo to rise above it. Auto False Echo Suppression Range must be set to a distance shorter than the distance to the material level when the environment was learned, to avoid the material echo being screened out. Example before Auto False Echo Suppression ① default TVT ⑤ high calibration point = 0 ② false echo ⑥ obstruction at 1.3. m ③ material echo ⑦ material level at 3.2 m ④ sensor reference point
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) 248 Operating Instructions, 08/2014, A5E32221386-AC Example after Auto False Echo Suppression Auto False Echo Suppression Range set to 2 m ① Learned TVT ④ Default TVT ② False echo ⑤ Material echo ③ Auto False Echo Suppression Range ⑥ Echo marker 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.) Far Range can be used in applications where the base of the vessel is conical or parabolic. A reliable echo may be available below the vessel empty distance, due to an indirect reflection path. Increasing Far Range to 30% or 40% can provide stable empty vessel readings.
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 249 A.2.8 Measurement Response Note Units are defined in Units (2.3.1.) and are in meters by default. Response Rate (2.3.8.1.) limits the maximum rate at which the display and output respond to changes in the measurement. There are three preset options: slow, medium, and fast. Once the real process fill/empty rate (m/s by default) is established, a response rate can be selected that is slightly higher than the application rate. Response Rate automatically adjusts the filters that affect the output response rate. Response Rate (2.3.8.1) Fill Rate (2.3.8.2)/Empty Rate (2.3.8.3) * Slow 0.1 m/min (0.32 ft/min) 10 s Medium 1.0 m/min (3.28 ft.min) 10 s Fast 10.0 m/min (32.8 ft/min) 0 s 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
Appendix A: Technical reference A.2 Echo processing SITRANS LR250 (PROFIBUS PA) 250 Operating Instructions, 08/2014, A5E32221386-AC A.2.10 Loss of Echo (LOE) A loss of echo (LOE) occurs when the calculated measurement is judged to be unreliable because the echo confidence value has dropped below the echo confidence threshold. Confidence (2.5.9.1.) describes the quality of an echo. Higher values represent higher quality. Echo Threshold (2.5.7.3.) defines the minimum confidence value required for an echo to be accepted as valid and evaluated. If the LOE condition persists beyond the time limit set in LOE Timer (2.3.6.) the LCD displays the Service Required icon, and the text region displays the fault code S: 0 and the text LOE. If two faults are present at the same time, the fault code, error text, and error icon for each fault are displayed alternately. For example, Loss of Echo and faulty power supply: Upon receiving a reliable echo, the loss of echo condition is aborted, the Service Required icon and error message are cleared, and the reading returns to the current level. A.2.10.1 LOE Timer LOE Timer (2.3.6.) determines the length of time a Loss of Echo (LOE) condition will persist before a Fail-safe state is activated. The default is 100 seconds. Fail-safe Mode determines the level to be reported when the Fail-safe timer expires. 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. You can select one of three possible values to be reported when a Fail-safe mode is activated. Mode Mode (2.6.9.1.) determines the material level to be reported when LOE Timer (2.3.6.) expires. Mode (2.6.9.1.) SUB VALUE Use substitute value. Value (2.6.9.2.) used as output value. LAST VALUE * Last value (Store last valid output value). USE BAD VALUE Use bad value (Calculated output value is incorrect).
Appendix A: Technical reference A.3 Maximum Process Temperature Chart SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 251 Value Value (2.6.9.2.) defines the material level to be reported if the option Use substitute value is selected in Mode (2.6.9.1.). The two Analog Input Function blocks are set separately. To set a user-defined value ● Navigate to the Level Meter > Setup > desired Analog Input (1 or 2). ● Set Mode (2.6.9.1.) to Use substitute value. ● Go to Value (2.6.9.2.) and enter the desired value. A.3 Maximum Process Temperature Chart WARNING Exceeded maximum internal and process temperatures Danger of device malfunction • Internal temperature must not exceed +80 ° C (+176 °F). • Process temperature must not exceed limits specified by the antenna type. 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 sunlight exposure.
Appendix A: Technical reference A.3 Maximum Process Temperature Chart SITRANS LR250 (PROFIBUS PA) 252 Operating Instructions, 08/2014, A5E32221386-AC Maximum Process Temperatures versus allowable ambient ① Internal enclosure temperature ② Ambient temperature ③ Process temperature (at process connection) Where the chart does not apply, please use your own judgement regarding the use of SITRANS LR250. If the internal temperature exceeds the maximum allowable limit, a sun shield or a longer nozzle may be required. See Minimum Value (3.3.1.) and Maximum Value (3.3.2.) to monitor the Internal Temperature.
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 253 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. • The user is responsible for the selection of bolting and gasket materials which will fall within the limits of the flange and its intended use and which are suitable for the service conditions. • Improper installation may result in loss of process pressure and/or release of process fluids and/or gases. Note • The process connection tag shall remain with the process pressure boundary assembly. (The process pressure boundary assembly comprises the components that act as a barrier against pressure loss from the process vessel: that is, the combination of process connection body and emitter, but normally excluding the electrical enclosure). In the event the device package is replaced, the process connection tag shall be transferred to the replacement unit. • SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirements of the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment Directive. • The serial numbers stamped in each process connection body, (flange, threaded, or sanitary), provide a unique identification number indicating date of manufacture. Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX= sequential unit produced) • Further markings (space permitting) indicate flange configuration, size, pressure class, material, and material heat code. Pressure Equipment Directive, PED, 97/23/EC Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts have no pressure-bearing housing of their own and, therefore, do not come under the Pressure Equipment Directive as pressure or safety accessories (see EU Commission Guideline 1/8 and 1/20).
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 254 Operating Instructions, 08/2014, A5E32221386-AC A.4.1 Horn antenna 1.5", 2" and 3" [NPT, G (BSPP), R (BSPT)] Threaded Versions ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 255 A.4.2 Flanged horn antenna JIS B 2220, 10K: 50A, 80A, and 100A ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 256 Operating Instructions, 08/2014, A5E32221386-AC EN1092-1, PN16: DN50, DN80, DN100, and DN150 ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 257 EN1092-1, PN40: DN50, DN80, DN100, and DN150 ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 258 Operating Instructions, 08/2014, A5E32221386-AC ASME B16.5, Class 150: 2", 3", and 4" NPS ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 259 ASME B16.5, Class 300: 2", 3", and 4" NPS ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 260 Operating Instructions, 08/2014, A5E32221386-AC A.4.3 Flanged encapsulated antenna ASME B16.5, Class 150: 2", 3", 4", and 6" NPS ① Atmospheric P Allowable operating pressures T Allowable operating temperatures JIS B 2220, 10K: 50A, 80A, 100A, and 150A ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 261 EN1092-1, PN10/16: DN50, DN80, DN100, and DN150 ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 262 Operating Instructions, 08/2014, A5E32221386-AC A.4.4 PVDF antenna ASME B1.20.1 2" NPT, EN ISO 228-1 2" G (BSPP), EN 10226-1 2" R (BSPT) ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 263 A.4.5 Hygienic encapsulated antenna DIN 11851 Sanitary/Hygienic nozzle/slotted nut: DN50, DN80, and DN100 DIN 11864-1 Aseptic/Hygienic nozzle/slotted nut: DN50, DN80, and DN100 ① Atmospheric P Allowable operating pressures T Allowable operating temperatures
Appendix A: Technical reference A.4 Process Pressure/Temperature Derating Curves SITRANS LR250 (PROFIBUS PA) 264 Operating Instructions, 08/2014, A5E32221386-AC DIN 11864-2 Aseptic/Hygienic flanged: DN50, DN80, and DN100 ① Atmospheric P Allowable operating pressures T Allowable operating temperatures Note For pressure applications, all attachment hardware must be suitably rated.
Appendix B: PROFIBUS PA profile structure B.1 PROFIBUS Level Device Design SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 265 DIN 11864-3 Aseptic/Hygienic clamp: DN50, DN80, and DN100 IS0 2852 Sanitary/Hygienic clamp: 2", 3", and 4" Tuchenhagen Varivent face seal clamp: Type N (68 mm) and Type F (50 mm) ① Atmospheric P Allowable operating pressures T Allowable operating temperatures Note For pressure applications, all clamps must be rated accordingly.
Appendix B: PROFIBUS PA profile structure B.1 PROFIBUS Level Device Design SITRANS LR250 (PROFIBUS PA) 266 Operating Instructions, 08/2014, A5E32221386-AC Appendix B: PROFIBUS PA profile structure B B.1 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. The functions of the device are divided into blocks with different areas of responsibility. The blocks are configured by parameters. The device is implemented with one Physical Block, one Transducer Block (TB), and two Analog Input Function Blocks (AIFB1 and AIFB2). Physical Block The Physical Block handles functionality and descriptions relating to the device as a whole: for example, LCD Contrast (functionality) and Firmware Revision and Tag (descriptions).
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 267 Transducer Block (TB) The Transducer Block carries out adjustments to the sensor, such as level calibration and volume calibration. It supplies the measurement value [Primary Value (PV), Secondary Value 1 (SV1), or Secondary Value 2 (SV2)] utilized by either or both of the AIFBs. 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. The Analog Input Function Block output supplies the measured value and associated status information to the PROFIBUS PA network via cyclic data transfer. B.2.1 Description of the blocks B.2.1.1 Transducer Block function groups The figure below shows the signal flow of measured values from the sensor through the Transducer Block into the output value: ● Primary Value (PV): Level or Volume ● Secondary Value 1 (SV1): Level ● Secondary Value 2 (SV2): Distance The Transducer Block implements all of the basic parameters (see diagram below), including level to volume calculation, if that option has been selected.
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) 268 Operating Instructions, 08/2014, A5E32221386-AC Transducer Block 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 241). 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. The analog signal from the sensor is transformed into a digital representation. A Sensor Offset (default 0) compensates for changes to the sensor reference point, if necessary. 2. Level Calibration is a linear transfer function that converts a sensor value to a level value.
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 269 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. b) 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. c) Level Offset (default O) can compensate for specific vessel configurations. 3. Linearization can be carried out to accommodate complex vessel shapes, or to provide level to volume conversion. 4. The Transducer Block provides three possible outputs: – Primary Value (PV) / Level or Volume – Secondary Value 1 (SV1) / Level – Secondary Value 2 (SV2) / Distance (sensor units)
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) 270 Operating Instructions, 08/2014, A5E32221386-AC 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.) Peak indicators allow you to check the maximum and minimum temperatures that have occurred. To see peak temperature values, Open the menu View – Device Diagnostics, select Device Status, and click on the tab Device Status. B.2.1.3 Analog Input Function Blocks 1 and 2 The input to the AIFB is a value with a status. See Transducer Block function groups (Page 267) for a graphic representation. Output conversion The Analog Input Function Blocks can modify the output value. Scaling Output Scaling (2.6.6.) allows you to scale the output to any desired units. Fail-safe If the status of the input (TB output value or Simulation Value) is bad, the fault logic can output either the last usable measured value, or a given substitute value. Set Fail-safe Mode (2.6.9.) and, if desired, define a value in Value (2.6.9.2.). Device/input simulation You can define a simulated value to be input to the AIFB instead of the output value from the Transducer Block. The simulated value allows the AIFB to be tested independently of the characteristics of the environment. Actual Mode: Device / Output Simulation Actual Mode allows you to select one of three possible outputs. Actual Mode (2.6.2.) Description Output value AUTO automatic the automatically-recorded measured value MAN manual a manually-set fixed simulation value O/S function block disabled the preset safety value.
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 271 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 271). 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 SITRANS LR250 (PROFIBUS PA) 272 Operating Instructions, 08/2014, A5E32221386-AC 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 249) for details. 4. The status of the input value from the Transducer Block is checked. If the status is Bad, a Fail-safe condition occurs. The output is determined by the setting for Failsafe Mode. 5. Actual Mode (2.6.2.) allows the entire AI block to be overridden by a Manual Output value. See Actual Mode (2.6.2.) for details. 6. The value is checked against the user-defined warning and alarm limits. The upper and lower limits are defined in units corresponding to the Output range, and a limit hysteresis can be used to adjust the sensitivity. See Alarms and Warnings (2.6.7.) for details. 7. The output value (OUT) is communicated via cyclic data transfer.
Appendix B: PROFIBUS PA profile structure B.2 Block Model SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 273
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 275 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.1 Device configuration To use PROFIBUS PA, you will need a PC configuration tool: we recommend SIMATIC PDM. Please consult the operating instructions or online help for details on using SIMATIC PDM. You can find more information at: SIMATIC PDM (www.siemens.com/simatic-pdm) C.1.1 SIMATIC PDM SIMATIC PDM is a software package used to commission and maintain SITRANS LR250 and other process devices. For more detail see Functions in SIMATIC PDM (Page 75). C.1.1.1 Electronic Device Description In order to use Process Device Manager (PDM) with PROFIBUS PA, you will need the Electronic Device Description for SITRANS LR250. For details see Electronic Device Description (EDD) (Page 76). 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)
Appendix C: Communications via PROFIBUS C.3 Bus termination SITRANS LR250 (PROFIBUS PA) 276 Operating Instructions, 08/2014, A5E32221386-AC C.3 Bus termination Note PROFIBUS PA cable shield MUST be terminated at both ends of the cable for it to work properly. Please refer to the PROFIBUS PA User and Installation Guidelines (order number 2.092), available from: PROFIBUS PA (http://www.profibus.com/) C.4 Power demands To determine how many devices can be connected to a bus line, calculate the combined maximum current consumption of all the connected devices: 15 mA for SITRANS LR250. Allow a current reserve for safety. 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. Resetting the PROFIBUS address to 126 ● Via SIMATIC PDM: 1. Open the menu Device – Master Reset and click on Reset Address to 126. 2. Click on OK: the address will be reset to 126, and if the address lock was on, it will be disabled. ● Via the handheld programmer:
Appendix C: Communications via PROFIBUS C.6 Operating as a profile device SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 277 1. Navigate to Service (4.) > Master Reset (4.1.). (You can enter the numeric value instead of navigating via the Arrow keys.) 2. Press RIGHT Arrow to open Edit Mode then scroll down to DEV ADDRESS and press RIGHT Arrow to select it. The address will be reset to 126, and if the address lock was on, it will be disabled. 3. Press LEFT Arrow to exit. 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. SITRANS LR250 can be identified in one of three ways: Device Identification Profile Model STD PROFILE Standard Profile (uses generic GSD for 2 AIFB [ident # = 0x9701] * MANUFACTURER Manufacturer-specific (uses Siemens EDD and GSD file, which identifies the LR250 [PROFIBUS PA]) [ident # = 0x8150] STD – AIFB 1 ONLY Standard Profile AIFB 1 only (uses generic GSD for 1 AIFB) [ident # = 0x9700] Defining the device as Profile-specific as opposed to Manufacturer-specific makes it possible to exchange the device for any other device of the same profile type without changing the GSD file. To set up SITRANS LR250 as a profile device see PROFIBUS Ident Number (5.2.). C.6.1 Configuring a new device See Configuring a new device (Page 77).
Appendix C: Communications via PROFIBUS C.7 Cyclic versus acyclic data SITRANS LR250 (PROFIBUS PA) 278 Operating Instructions, 08/2014, A5E32221386-AC C.6.2 Configuring PROFIBUS PA with an S7-300/ 400 PLC 1. If SITRANS LR250 is not listed in the STEP 7 device catalog, you can download the EDD files from the Siemens Web site and add them to your computer using the device integration procedure specific to your host software (eg. Step 7, or PDM, etc.) version. Go to the product page of our website and click on Support > Software Downloads: Product page (http://www.siemens.com/LR250) 2. Add the SITRANS LR250 "rack": click and drag the SITRANS LR250 folder from the hardware catalog. 3. Fill the rack with desired modules, by dragging and dropping them from the hardware catalog. 4. After configuring PROFIBUS PA in steps 2 and 3, download it to the PLC. 5. Add code to the PLC program to read data consistently using the SFC14. 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.
Appendix C: Communications via PROFIBUS C.7 Cyclic versus acyclic data SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 279 C.7.1 Cyclic data When you configure SITRANS LR250 on the PROFIBUS PA bus, there are two slots available for modules. Note Each of the slots has to have a module defined in it. Slot 0 always transmits AIFB1 information; slot 1 defaults to Free Place, but can be changed to AIFB2 information. If you do not wish to have data transmitted, then you must use a Free Place module in that slot. Each of the two Analog Input Function Blocks can be set up to return Level, Distance, or Volume. Within the function blocks, the values are scaled according to the user requirements [see Analog Input Function Blocks 1 and 2 (Page 270) for details]. AIFB1 and AIFB2 return 5 bytes of data each: Floating Point Status AIFB1 byte 1 byte 2 byte 3 byte 4 byte 5 AIFB2 byte 6 byte 7 byte 8 byte 9 byte 10 The first 4 bytes are the floating point representation (IEEE) of the variable. The variables are the outputs of the function block. The 5th byte is the status word and the list of possible values is given in the chart below. The 5 bytes must be read consistently, in a contiguous chunk: they cannot be read byte by byte, and cannot suffer an interrupt. If you are using an S7-300 / 400, you will need to use SFC14 DPRD_DAT: Read Consistent Data of a Standard PD Slave.
Appendix C: Communications via PROFIBUS C.8 Status byte SITRANS LR250 (PROFIBUS PA) 280 Operating Instructions, 08/2014, A5E32221386-AC 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. When Condensed Status is disabled, Status Byte will be returned, and the following codes will be used. Status Codes for good quality Values in hex notation Description 0x80 Data is GOOD. 0x84 A parameter in the function block has been changed: status active for 10 s 0x89 Active low warning. 0x8A Active high warning. 0x8D Active low alarm. 0x8E Active high alarm. Status Codes for Uncertain Quality Values in hex notation Description 0x4B Value is a substituted value (normally used in Failsafe). 0x4C/0x4F Initial value. 0x47 Last usable value. Status Codes for Bad Quality Values in hex notation Description 0x10 The LOE timer has expired: this could be caused by LOE or by a sensor malfunction: value is BAD. 0x01 There is an error in the configuration of the function blocks in PROFIBUS PA a). 0X1F The function block, or the transducer block, has been placed out of service. a) This could happen when a firmware download has been done, but a system reset has not been done. This could also happen if the function blocks are not configured properly using the handheld programmer, PDM or acyclic services.
Appendix C: Communications via PROFIBUS C.9 Condensed status SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 281 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.) 0x86 GOOD – active advisory alarm Set if the value is good and the block has an active Alarm. 0x80 ...0x8E GOOD – limit check/ update event See Status Codes for Good Quality (Page 280). 0xA0 ...0xA3 GOOD – initiate fail safe This fault is not generated by the product, but can be simulated. 0xA4 ...0xA7 GOOD – maintenance required Value is valid. Maintenance is recommended within a medium-term period. 0xA8 ...0xAB GOOD – maintenance demanded Value is valid. Maintenance is demanded within a short- term period. 0xBC ...0xBF GOOD – function check Device performs internal function check without influencing the process. Value is valid.
Appendix C: Communications via PROFIBUS C.9 Condensed status SITRANS LR250 (PROFIBUS PA) 282 Operating Instructions, 08/2014, A5E32221386-AC Condensed Status (UNCERTAIN) Hex value Status - UNCERTAIN Description 0x45 UNCERTAIN – substitute set Output of Failsafe logic only. 0x4F UNCERTAIN – initial value Default value as long as no measured value is available or until a diagnosis is made that affects the value and the status accorded to it. 0x68 ...0x6B UNCERTAIN – maintenance demanded Usability of the process value depends on the application. Value is potentially invalid. Cause can be determined by reading the extended diagnostics a). Maintenance is demanded within a short-term period. 0x73 UNCERTAIN – simulated value, start Indicates the start of a simulation. 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. power down cycle) if the simulation is enabled or the FB is in MAN mode – after passivation is cleared if simulation is enabled or the FB is in MAN mode • In MAN mode the status remains until a subsequent write command overwrites the OUT value after the 10 seconds have expired. • In simulation mode the written status is buffered and appears in the value flow after 10 seconds. However the new written SIMULATE parameter with its status can be read before the 10 seconds have expired. 0x74 ...0x77 UNCERTAIN – simulated value, end Indicates the end of a simulation. Simulation of a measured value is disabled or Input FB mode changes from MAN to AUTO. This Status remains active for 10 seconds after simulation ends. While this status is active there is no reliable process value. Measured values and their status are updated afterwards. See Acyclic Extended Diagnostics (General Fault Codes) (Page 286).
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 283 Condensed Status (BAD) Hex value Status - BAD Description 0x00 BAD – non specific Proxy determines that a device does not communicate. 0x23 BAD – passivated (diagnostics alerts disabled) Configured failsafe value is used, accompanied by this status. 0x24 ...0x27 BAD – maintenance alarm, more diagnosis available No measurement available because of a failure. 0x25 BAD – process related, no maintenance No measurement available because of invalid process conditions. 0x3C ...0x3F BAD – function check / local override, value not usable Occurs during cleaning or calibration process. 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. The first part is 6 bytes long and is defined by the PROFIBUS standard. If there is a second part, it is called the ’extended cyclic diagnosis’ and it is 8 bytes long. The last 4 bytes of the extended diagnostic message give the error diagnosis [see Extended Mode Diagnosis (Page 284) and Condensed Mode Diagnosis (Page 285)]. The same information is also available acyclically via the Diagnosis Object.
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) 284 Operating Instructions, 08/2014, A5E32221386-AC C.10.2 Diagnosis object (available cyclically or acyclically) This consists of four bytes. In PROFIBUS PA there are two options for the Diagnosis Object: ● Extended Mode Diagnosis (Page 284) ● Condensed Mode Diagnosis (Page 285) You can choose which of these will be returned, by enabling or disabling Condensed Status. See Enable (3.4.1.). When Condensed Status is disabled Extended Mode Diagnosis will be returned, and the following codes will be used. C.10.3 Extended mode diagnosis Extended Mode Diagnosis Hex values Byte Bit Description Indication class a) 0x01000000 0 0 Electronics failure R 0x02000000 1 Mechanical failure R 0x04000000 2 Motor Temperature too high R 0x08000000 3 Electronics temperature too high R 0x10000000 4 Memory error R 0x20000000 5 Measurement failure R 0x40000000 6 Device not initialized (no calibration) R 0x80000000 7 Self calibration failed R 0x00010000 1 0 Zero point error (limit position) R 0x00020000 1 Power supply failure (electrical, pneumatic) R 0x00040000 2 Configuration invalid R 0x00080000 3 New startup carried out (Warm Start) A 0x00100000 4 Restart carried out (Cold Start) A 0x00200000 5 Maintenance required R 0x00400000 6 Characterization invalid R 0x00800000 7 Set to 1 (one), if the Ident_Number of the running cyclic data transfer and the value of Physical Block IDENT__NUMBER_SELECTOR parameter are different. R 2 0 to 7 Reserved for use within the PNO 3 0 to 6 Reserved for use within the PNO 0x00000080 7 More diagnosis information is available a) R indicates the message remains active as long as the reason for the message exists. A indicates the message will automatically reset after 10 seconds. Values of the DIAGNOSIS bit: 0 = not set; 1 = set
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 285 C.10.4 Condensed mode diagnosis Condensed Mode Diagnosis Hex values Byte Bit Description Indication class a) 0x01000000 0 0 Electronics failure R 0x02000000 1 Mechanical failure R 0x04000000 2 Motor Temperature too high R 0x08000000 3 Electronics temperature too high R 0x10000000 4 Memory error R 0x20000000 5 Measurement failure R 0x40000000 6 Device not initialized (no calibration) R 0x80000000 7 Self calibration failed R 0x00080000 2 3 New startup carried out (Warm Start) R 0x00100000 4 Restart carried out (Cold Start) R 0x00200000 5 Maintenance required R 0x00400000 6 Reserved for use within the PNO A 0x00800000 7 Set to 1 (one), if the Ident_Number of the running cyclic data transfer and the value of Physical Block IDENT__NUMBER_SELECTOR parameter are different. A 0x00010000 3 0 Failure of the device or armature R 0x00020000 1 Maintenance demanded R 0x00040000 2 Device is in function check mode, or simulation, or under local control e.g. maintenance R 0x00080000 3 The process conditions do not allow the return of valid values. (Set if a value has the quality Uncertain - Process related, no maintenance or Bad - Process related, no maintenance.) R 4 to 7 Reserved for use within the PNO 4 0 to 6 Reserved for use within the PNO 0x80000000 7 0: There is no more information available 1: More diagnosis information is available in DIAGNOSIS_EXTENSION a) R indicates the message remains active as long as the reason for the message exists. A indicates the message will automatically reset after 10 seconds.
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) 286 Operating Instructions, 08/2014, A5E32221386-AC 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 283) for information on the location of the Extended Diagnostics. Note Certain fault codes (identified by an asterisk [*] in the table below) will persist until a manual reset has been performed [see Fault Reset (3.2.)].
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 287 Acyclic Extended Diagnostics /General Fault Codes LCD display Meaning Corrective Action Byte Bit S:0 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. • Adjust process conditions to minimize foam or other adverse conditions. • Correct range calibration. • If fault persists, contact your local Siemens representative. 0 0 S:2 Unable to collect profile because of a power condition that is outside the operating range of the device. Repair required. Contact your local Siemens representative. 2 S:3 Device is nearing its lifetime limit according to the value set in Maintenance Required Limit. Replacement is recommended. 3 S:4 Device is nearing its lifetime limit according to the value set in Maintenance Demanded Limit. Replacement is recommended. 4 S:6 Sensor is nearing its lifetime limit according to the value set in Maintenance Required Limit. Replacement is recommended. 6 S:7 Sensor is nearing its lifetime limit according to the value set in Maintenance Demanded Limit. Replacement is recommended. 7 S:8 Service interval as defined in Maintenance Required Limit has expired. Perform service 0 S:9 Service interval as defined in Maintenance Demanded Limit has expired. Perform service. 1 S:10 Input parameters High Calibration Point and Low Calibration Point are the same. • Check calibration settings of device. • Ensure settings for High Calibration Point and Low Calibration Point are different. 3 S:11 Internal temperature sensor failure. Repair required. Contact your local Siemens representative. 4
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) 288 Operating Instructions, 08/2014, A5E32221386-AC Acyclic Extended Diagnostics /General Fault Codes LCD display Meaning Corrective Action Byte Bit S:12 * 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. • Fault code will persist until a manual reset is performed using PDM or the LCD interface. 1 5 S:14 Upper and lower input values (Process Value Scale) for AIFB1 are the same. • Check configuration for AIFB1. • Ensure that Upper Value and Lower Value (Process Value Scale) are not the same. 6 S:15 Upper and lower input values (Process Value Scale) for AIFB2 are the same. • Check configuration for AIFB2. • Ensure that Upper Value and Lower Value (Process Value Scale) are not the same. 7 S:17 Calibration interval as defined in Maintenance Required Limit has expired. Perform calibration. 2 1 S:18 Calibration interval as defined in Maintenance Demanded Limit has expired. Perform calibration. 2 S:28 Internal device failure caused by a RAM memory error. Repair required: contact your local Siemens representative. 3 4 S:29 EEPROM damaged. Repair required: contact your local Siemens representative. 5 S:31 Flash error. Repair required: contact your local Siemens representative. 7
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 289 Acyclic Extended Diagnostics /General Fault Codes LCD display Meaning Corrective Action Byte Bit 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. 4 0 S:33 Factory calibration for the internal temperature sensor has been lost. Repair required: contact your local Siemens representative. 1 S:34 Factory calibration for the device has been lost. Repair required: contact your local Siemens representative. 2 S:35 Factory calibration for the device has been lost. Repair required: contact your local Siemens representative. 3 S:36 Unable to start microwave module. Cycle power. If fault persists, contact your local Siemens representative. 4 S:37 Measurement hardware problem. Cycle power. If fault persists, contact your local Siemens representative. 5 S:38 Microwave module hardware failure: unable to calculate distance measurement. Cycle power. If fault persists, contact your local Siemens representative. 6 S:43 Factory calibration for the radar receiver has been lost. Repair required: contact your local Siemens representative. 5 3 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. If you do not have SIMATIC PDM you can download the EDD (Electronic Device Description) and reference the HTML help file directly. To find the slot and index numbers via SIMATIC PDM, go to Help > Communications, and select the appropriate block from the list. For each parameter, the slot and the relative index is listed. For example.
Appendix C: Communications via PROFIBUS C.10 Diagnostics SITRANS LR250 (PROFIBUS PA) 290 Operating Instructions, 08/2014, A5E32221386-AC AIFB 1 Index Parameter Datatype 1 Static Revision No. UNSIGNED_INTEGER (2) Each block has a slot number and an Index Offset value. Block Name Slot Index Offset Physical block 0 16 Transducer block 0 77 AIFB 1 1 16 AIFB 2 2 16 To get the absolute index for any parameter, add the Index Offset for the appropriate block to the relative index for that parameter. The parameter takes the slot number of the block in which it is located. For example: ● Parameter Static Revision Number has relative index = 1 and is located on AIFB1. ● It has Absolute Index = 17 (relative index 1 + index offset 16). ● It is located at Slot 1 (the slot number for AIFB 1).
Appendix D: Certificates and Support D.1 Certificates SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 291 Appendix D: Certificates and Support D D.1 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.com/automation/support-request) ● Via Phone: – Europe: +49 (0)911 895 7222 – America: +1 423 262 5710 – Asia-Pacific: +86 10 6475 7575 Further information about our technical support is available on the Internet at Technical support (http://support.automation.siemens.com/WW/view/en/16604318) Service & Support on the Internet In addition to our documentation, we offer a comprehensive knowledge base online on the Internet at: Service & Support (http://www.siemens.com/automation/service&support) There you will find: ● The latest product information, FAQs, downloads, tips and tricks. ● Our newsletter, providing you with the latest information about your products. ● Our bulletin board, where users and specialists share their knowledge worldwide. ● You can find your local contact partner for Industry Automation and Drives Technologies in our partner database. ● Information about field service, repairs, spare parts and lots more under "Services." 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.com/automation/partner)
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 293 List of abbreviations 13 Short form Long form Description Units 3-A 3-A Sanitary Standards, Inc. AIFB Analog Input Function Block CE / FM / CSA Conformité Européene / Factory Mutual / Canadian Standards Association safety approval Ci Internal capacitance F D/A Dialog to analog DCS Distributed Control System control room apparatus dK dielectric constant EDD Electronic Device Description EHEDG European Hygienic Engineering Design Group FEA Flanged Encapsulated Antenna FDA Food and Drug Administration HEA Hygienic Encapsulated Antenna Ii Input current mA Io Output current mA IS Intrinsically Safe safety approval Li Internal inductance mH mH milliHenry 10-3 H μF microFarad 10-6 F μs microsecond 10-6 s PED Pressure Equipment Directive safety approval pF pico Farads 10-12 F ppm parts per million PV Primary Variable measured value PVDF Polyvinylidene fluoride SELV Safety extra low voltage SV Secondary Variable equivalent value TB Transducer Block TFM1600 PTFE Modified PTFE polytetrafluoroethylene with perfluoropropyl vinyl ether (PPVE) modifier TVT Time Varying Threshold sensitivity threshold Ui Input voltage V Uo Output voltage V
List of abbreviations SITRANS LR250 (PROFIBUS PA) 294 Operating Instructions, 08/2014, A5E32221386-AC
LCD menu structure SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 295 LCD menu structure 14 Note • In Navigation mode, ARROW keys ( ) navigate the menu in the direction of the arrow. See Parameter Reference (Page 107) for detailed information and instructions.
LCD menu structure SITRANS LR250 (PROFIBUS PA) 296 Operating Instructions, 08/2014, A5E32221386-AC
LCD menu structure SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 297
LCD menu structure SITRANS LR250 (PROFIBUS PA) 298 Operating Instructions, 08/2014, A5E32221386-AC
LCD menu structure SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 299
LCD menu structure SITRANS LR250 (PROFIBUS PA) 300 Operating Instructions, 08/2014, A5E32221386-AC
SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 301 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. There are four basic types of antenna in radar level measurement, horn, parabolic, rod, and waveguide. attenuation a term used to denote a decrease in signal magnitude in transmission from one point to another. Attenuation may be expressed as a scalar ratio of the input magnitude to the output magnitude or in decibels. Auto False-Echo Suppression a technique used to adjust the level of a TVT to avoid the reading of false echoes. (See TVT.) Auto-False Echo Suppression Distance defines the endpoint of the TVT distance. (See TVT.) This is used in conjunction with auto false echo suppression.
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. Its value is expressed as the ratio of a quantity of electricity to a potential difference, and the unit is a Farad. confidence see Echo Confidence. damping term applied to the performance of a device to denote the manner in which the measurement settles to its steady indication after a change in the value of the level. dB (decibel) a unit used to measure the amplitude of signals. derating to decrease a rating suitable for normal conditions according to guidelines specified for different conditions. dielectric a nonconductor of direct electric current. Many conductive liquids/electrolytes exhibit dielectric properties; the relative dielectric constant of water is 80. 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. echo a signal that has been reflected with sufficient magnitude and delay to be perceived in some manner as a signal distinct from that directly transmitted. Echoes are frequently measured in decibels relative to the directly transmitted signal. Echo Confidence describes the quality of an echo. Higher values represent higher quality. Echo Threshold defines the minimum value required for an echo to be accepted as valid and evaluated. Echo Lock Window a window centered on an echo in order to locate and display the echo’s position and true reading. Echoes outside the window are not immediately processed. Echo Marker a marker that points to the processed echo. Echo Processing the process by which the radar unit determines echoes. Echo Profile a graphical display of a processed echo. Echo Strength describes the strength of the selected echo in dB referred to 1 μV rms. false Echo any echo which is not the echo from the desired target. Generally, false echoes are created by vessel obstructions. 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. The unit is a Henry. microwaves the term for the electromagnetic frequencies occupying the portion of the radio frequency spectrum from 1 GHz to 300 GHz. multiple echoes secondary echoes that appear as double, triple, or quadruple echoes in the distance from the target echo. Near Blanking see Blanking. nozzle a length of pipe mounted onto a vessel that supports the flange. parameters in programming, variables that are given constant values for specific purposes or processes. polarization the property of a radiated electromagnetic wave describing the time-varying direction and amplitude of the electric field vector. 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. pulse radar a radar type that directly measures distance using short microwave pulses. Distance is determined by the return transit time. radar radar is an acronym for RAdio Detection And Ranging. A device that radiates electromagnetic waves and utilizes the reflection of such waves from distant objects to determine their existence or position. range distance between a transmitter and a target. range extension the distance below the zero percent or empty point in a vessel. relative permittivity see dielectric constant. repeatability the closeness of agreement among repeated measurements of the same variable under the same conditions. 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. two wire radar a low-energy radar. Can be loop powered, analog, intrinsically safe 4 to 20 mA, or a digital (BUS) transmitter. waveguide antenna a hollow, metallic tube that transmits a microwave signal to the product target.
Index A Abbreviations and identifications list, 291 access control local access, 166 remote access, 166 Acknowledge Faults via PDM, 93 activating SITRANS LR250, 54 acyclic diagnostics fault codes, 282 agitator blade detection avoiding, 126 antenna replacement, 175 antenna types flanged encapsulated antenna, 205, 207 flanged horn antenna, 201 flanged horn antenna with extension, 203 threaded horn, 195 threaded PVDF antenna, 227 Auto False Echo Suppression explanation, 246 setup, 128 setup via LUI, 130 TVT Shaper adjustment, 86 via PDM, 85, 88 B beam angle flanged encapsulated antenna, 205, 207 flanged horn, 201, 203 threaded horn, 197, 199 threaded PVDF antenna, 227 blanking (see Near Range), 248 bolting instructions, 37 bus address (device address) resetting to 126, 276 bus termination, 276 bypass pipe see stillpipe, 32 C cables requirements, 42 Calibration Interval, 161 calibration schedules via PDM, 91 cleaning instructions, 173 CLEF (Constrained Leading Edge Fit) explanation, 244 CLEF range setup, 125 Condensed Status explanation, 280 conduits requirements, 42 configuration network, 275 new device via PDM, 77 PLC with PROFIBUS PA, 44 Quick Start via LUI, 63 Correct usage, (See improper device modifications) cyclic data versus acyclic data, 278 D damping Filter Time Constant setup, 136 Damping explanation, 249 data logging time-based echo profile storage, 86 Device Address, 165 reset via LUI, 67 device description Electronic Device Description, 275 Device Description (DD) see EDD, 76 device namepate Intrinsically Safe (FM/CSA), 47 device nameplate FM/CSA Class 1 Div. 2 28, 49
Index SITRANS LR250 (PROFIBUS PA) 308 Operating Instructions, 08/2014, A5E32221386-AC Intrinsically Safe (ATEX/IECEx), 46 Device Reset see Master Reset, 146 Device Status icons, 180 view via PDM, 101 diagnosis reply, 282 Diagnostics maintenance settings, 138 via PDM, 98 dimensions flanged encapsulated antenna, 205, 207 flanged horn, 201, 203 flat face flange, 234 raised face flange, 229, 231 threaded horn with extension, 197, 199 threaded PVDF antenna, 227 E echo confidence parameter setup, 127 echo processing Process Intelligence, 242 Echo Profile data logging, 86 view via LUI, 66 view via PDM, 85 Echo Profile Utilities Auto False Echo Suppression, 84 Echo Profile, 84 TVT Shaper, 84 echo selection Algorithm, 243 CLEF (Constrained Leading Edge Fit), 244 Position Detect, 243 time varying threshold (TVT), 242 Echo Setup quick access via PDM, 91 EDD updating, 77 EDD (electronic device description), 275 edit mode handheld programmer, 59 key functions, 62 Electronic Device Description (EDD) required for PROFIBUS PA, 76 updating, 77 Empty rate setup, 115 enable/disable local operation, 166 enable/disable remote operation, 166 enclosure opening, 43 F factory defaults Master Reset, 146 Factory Defaults reset via PDM, 97 Fail-safe Behavior explanation, 250 Mode explanation, 250 Value explanation, 251 Fail-safe Mode FB1 setup, 137 false echo see Auto False Echo Suppression, 246 Far Range explanation, 248 setup, 121 fault codes acyclic diagnostics, 282 acyclic extended diagnostics, 285 general fault codes, 181 Fill Rate setup, 114 Filter Time Constant explanation, 249 flange bolting instructions, 37 flange markings flat face, 234 raised face, 229, 232 flange sizes flat face, 234 raised face, 229, 231 flanged encapsulated antenna dimensions, 207 flanged horn dimensions, 201, 203 Function Blocks view process variables via PDM, 99
Index SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 309 function keys edit mode, 62 navigation mode, 59 Function keys measurement mode, 57 G GSD file, 276 H handheld programmer edit mode, 60, 62 measurement mode, 57 navigation, 59 programming, 58 hazardous area installations instructions, 50 wiring requirements, 45 hysteresis setup, 136 I Identifications and abbreviations list, 291 Improper device modifications, 16 installation hazardous area requirements, 45 requirements, 34 warnings and notes, 34 internal temperature monitoring, 251 K key functions edit mode, 62 navigation mode, 59 L Language, 167 LCD display contrast adjustment, 164 echo profile viewing, 66 fast mode, 164 measurement mode, 55 lens replacement, 175 lid-lock set screw, 43 Limit Hysteresis setup, 136 Lithium batteries Safety, 53 Local Operation enable/disable, 166 Local User Interface (LUI), 55 LOE Timer explanation, 250 setup, 111 loop voltage vs. loop resistance power supply requirements, 47 loss of echo (LOE) explanation, 250 Loss of Echo (LOE) explanation, 250 LUI (Local User Interface contrast adjustment, 55 M maintenance calibration schedules, 92 repairs, 173 replacing antenna, 175 replacing lens, 175 service schedules, 92 Maintenance, 174 maintenance settings Calibration Interval, 161 see Diagnostics, 138 see Remaining Sensor Lifetime, 153 Service Interval, 156 Master Reset factory defaults, 146 reset PROFIBUS address (to 126), 146 standard defaults, 146 Measurement Response explanation, 249 mounting
Index SITRANS LR250 (PROFIBUS PA) 310 Operating Instructions, 08/2014, A5E32221386-AC bypass requirements, 32 handheld programmer access, 30 housing construction, 24, 31 nozzle design, 27, 253 nozzle location, 28, 253 on vessel with obstructions, 31 sunshield recommended, 31 N nameplate Intrinsically Safe (ATEX/IECEx), 46 Intrinsically Safe (FM/CSA), 47 Near Range explanation, 248 setup, 121 O operating principles cleaning, 241 Operation level, distance, space, 108 Output limits setup, 135 Output Scale setup, 134 overview, 19 P parameters reset via PDM, 83 password protection via PDM, 104 PDM see SIMATIC PDM, 75 peak values electronics temperature, 102 sensor peak values FB1 and FB2, 103 PED (Pressure Equipment Directive), 23, 253 performance specifications, 187 pipe sizes flange mounting, 229, 231 polarization reference point, 31 power consumption, 276 power source requirements, 41 pressure applications, 23 Pressure Equipment Directive, 23, 253 Process Intelligence, 242 process temperature maximum, 251 Process Variables view via PDM, 98 PROFIBUS address reset to 126, 146 PROFIBUS address 145, 276 PROFIBUS Ident Number, 165 programmer handheld, 57 programming adjust parameters via PDM, 83 via the handheld programmer, 58 programming LR250 enter program mode, 59 via handheld programmer, 59 propogation factor values, 122 Q Qualified personnel, 17 Quick Start Wizard via LUI, 63 via SIMATIC PDM, 78 R raised face flange markings, 228, 230 reading erratic troubleshooting, 185 reading incorrect troubleshooting, 185 reading response slow, 185 Remote Lockout, 166 repair cautions, 175 excluded liability, 175 reset see Master Reset, 146 Response Rate
Index SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 311 explanation, 249 setup, 114 S Scope of delivery, 11 sensor reference point flanged encapsulated antenna, 205, 207 flanged horn, 201, 203 flat faced flange, 234 raised face flange, 228, 230 threaded horn, 197, 199 threaded PVDF horn, 227 Service Interval, 156 service schedules via PDM, 91 settings adjust parameters via LUI, 62 adjust parameters via PDM, 58, 83 sidepipe see bypass pipe, 32 SIMATIC PDM functions and features, 75 overview, 275 Rev 5.2, SP1 features, 76 Rev 6.0, SP4 features, 76 Simulate Analog Input via PDM, 94 Simulate Input via PDM, 96 Simulate Output via PDM, 95 Simulation via PDM, 93 SITRANS LR250 operating principles, 241 startup transition screen, 54 status byte status codes, 279 status codes, 279 stillpipe mounting requirements, 32 Support contact information, 289 T technical data, 187 ambient temperature, 192 antenna, 190 enclosure, 190 environmental, 192 performance, 187 pressure, 192 process connections, 189 process temperature, 192 weight, 190 technical support contact information, 289 temperature de-Rating curves, 253 threaded connection markings, 227 threaded horn antenna dimensions, 197, 199 threaded PVDF antenna dimensions, 227 trend view via PDM, 100 troubleshooting communication, 179 operation, 184 TVT (time varying threshold) explanation, 242 TVT Shaper manual adjustment via PDM, 87 via PDM, 84 V vessel shape selection, 116 W Wear powered hours, 93 poweron resets, 93 view via PDM, 93 wiring cables, 42 hazardous areas, 45 Write Locking via PDM, 96 Write Protection, 166
Index SITRANS LR250 (PROFIBUS PA) 312 Operating Instructions, 08/2014, A5E32221386-AC
Index SITRANS LR250 (PROFIBUS PA) Operating Instructions, 08/2014, A5E32221386-AC 313

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