Operating instructions Binary level sensor
Contents
1. 10 2014 80223649 00 ifm electronic Operating instructions Binary level sensor efeckoriso LMTxOx LMTx1x LMTx2x Contents DHONI Ay HDIB HR ERR 9 SONS 3 DUO E EAEE E 3 3 Functions and features 00 ececsesessesssesssscecsssecsesesssseseesesasseeessesessusessesesateesass 4 Sx PAD OIG AMONG MN 4 3 2 Restriction of the application area sese 6 MIO Ml MET KT 6 4 1 Measuring principle sess 6 4 2 Processing of the measured signals see T 4 3 Other features of the unit sse 7 7 4 4 1 General information sss 4 4 2 Device specific information sse 8 4 4 3 Parameter setting tOols c ccsescssssssesssssssssssessrsesssesssesessseesaserseses 8 4 5 Application examples cn ccesiovcsarscoivasndetienasesschcacmmassiasedeteaettarudradeoaenendeevens 9 4 5 1 Application examples for unit types with short probe 9 4 5 2 Application examples for unit types with longer probe 10 4 5 3 Application example installation in existing tuning fork adapters 11 S Ince DR 11 5 1 Installation location environment nnnenee 11 SM e 12 5 2 1 Installation LMT1x02. LMT1x1 and LMT1x2 13 5 2 2 Installation LMT1x4 and LMT 1X5 sese 19 5 2 3 Installation LMT2x2 and LMT3x2 in existing tuning fork adapters 15 5 3 Notes on the compliant installation eeesse 16 5 4 Note on the use in accordance with 17 18 1 Parameter setting TT TT 19 7 1 Parameter setting via PC essere 19 7 2 Parameter setting via the memory plug eese 21 7 3 Parameter setting via the teach input ess 22 1 3 4 Requirements iur ttiam tnb utra dh 22 RSV BONUM vessel RN 22 7 3 3 Changing the output function 23 7 3 4 Fault during the setting process sse 23 SERE NT 24 9 Maintenance repair disposal usciti visksa stir RR ROC tB ERE EXE 8 25 10 Notes on the regulation EC 1935 2004 25 11 Technical data and scale drawing sssss 25 LP zie el 26 1 Preliminary note 1 1 Symbols used p Instructions gt Cross reference Important note Non compliance can result in malfunction or interference EB Information Supplementary note 2 Safety instructions Please read the product description prior to s
3. NO Fnc window function NC OUT1 Tch configure pin 4 as input for the teach signal 6 Electrical connection 7 3 Parameter setting via the teach input TSP1 Teach to medium 1 Full adjustment to the medium 1 to be detected automatically sets the switching thresholds SP1 rP1 for OUT1 TSP2 Teach to medium 2 Full adjustment to the medium 2 to be detected automatically sets the switching thresholds SP2 rP2 for OUT2 Response of the outputs OUTx in case of a fault dFo Delay time for switching response in case of a fault Setting range 0 5 s Step increment 0 2 s dsx 0 Switching delay for OUTx Setting range 0 10 s Step increment 0 2 s Parameter ds is not available for LMT100 LMT110 and LMT121 2 The NE parameters can be set Switch off delay for OUTx Setting range 0 10 s Step increment 0 2 s Switching logic for the outputs pnp or npn Restore the factory setting Access code for menu level 1 Menu level 1 contains all parameters listed After activation of this access code the unit is completely protected against unauthorised changes In case of loss of the valid code parameter setting is not possible Therefore store the code carefully Access code for menu level 2 Menu level 2 contains the menu items FOU ds dr P n dFo rES and COd After activation of this access code only these parameters are protected against unauthorised changes 7 2 Parameter setting via th
4. from other manufacturers Note the remarks 5 1 Installation location environment EW If properly installed in the original hygienic welding adapter EHEDG and also 3A conformity can be reached 5 Installation Before installing and removing the unit Make sure that no pressure 1 applied to the system and there is no medium in the pipe or the tank Also always note the potential dangers related to extreme machine and medium temperatures 5 1 Installation location environment Installation preferably in closed metal tanks When installed in plastic tanks there may be deterioration caused by electromagnetic interference gt Check the function by an application test gt If disturbances occur appropriate measures must be taken shielding grounding etc 1 A correct fit and function of the unit and ingress resistance of the connection are only ensured using ifm adapters Available accessories www ifm com Data sheet search Accessories 1 For use of process connections from other manufacturers gt Ensure mechanical compatibility As rule ifm does not assume any responsibility for ingress resistance hygiene and function in particular with non existing compatibility incorrect installation Installation in pipes from DN25 possible for short probes When mounted in restricted spaces e g pipes tank corners or in agitators gt To avoid malfunction and damage on sensor and plant adhere to a
5. of the unit or while in UK operation If you change parameters during operation this will influence the function of the plant gt Ensure that there will be no malfunctions in your plant The following subchapters describe the three different parameter setting options of the unit 7 1 Parameter setting via PC For parameter setting IO Link software is necessary e g LINERECORDER SENSOR or ifm Container To connect the sensor via the USB interface of a computer the USB IO Link interfaces order no E30396 or E30390 are available EB The program library of the available DTM objects the IO Device Description IODD and the FDT service program ifm Container can be downloaded at www ifm com Service Download The following parameters can be set SPx rPx Sensitivity of the set points SPx and reset points rPx for outputs OUT 1 and OUT2 The values for SPx rPx are set in per cent of the maximum process value The process value is defined as follows Process value in air 0 Process value in tap water 100 96 Minimum hysteresis 2 96 Reference values Aqueous water based SPx 62 96 rPx 54 96 media factory setting LMTxOx Media with low water content SPx 35 rPx 29 96 factory setting LMTx2x Oils fats powdery media SPx 8 rPx 5 factory setting LMTx1x OUx Output function for OUTx Hno hysteresis function NO Hnc hysteresis function NC Fno window function
6. Replace the green flat seal 1 with the black flat seal 4 The flat seal 4 is supplied with the article order no E43323 gt Slide the PEEK seal 3 onto the sensor tip until the end stop cone Slightly grease the thread of the sensor using a lubricating paste which is suitable and approved for the application 14 gt Screw the sensor into the adapter and tighten Max tightening torque 20 25 Nm gt After installation check the tank pipe for ingress resistance 5 2 3 Installation LMT2x2 and LMT3x2 in existing tuning fork adapters Installation in existing tuning fork adapters with flush seal via O ring 4 5 3 Application example installation in existing tuning fork adapters gt Observe the notes in 5 1 Installation location environment for use in process connections of other manufacturers gt Observe the mounting remarks of the manufacturer of the existing adapter UK gt Insert the green flat seal 1 Fig J and or check its position It seals the gap on the back between the sensor and the adapter gt Slide a suitable original O ring and a possibly existing spacing ring of the adapter over the sensor the right way round G3 4 and or check the position of the adapter G1 gt Check the state and material of the O ring replace if necessary Slightly grease the thread of the sensor using a lubricating paste which 1 Suitable and approved for the application gt Screw the sensor into th
7. distance of min 15 mm to neighbouring objects e g pipe tank walls structures other LMT sensors fig F gt Observe the respective installation depth of the probe in particular with longer probes Donotuse any additional sealing material e g PTFE tape The sensor must be in electrical contact with the metal process connection Protect the probe tip against direct sunlight UV radiation 5 2 Installation process The unit is installed by means of an adapter gt Observe the installation instructions of the adapter used 12 gt Ensure cleanliness of the sealing areas Remove protective packaging only just before mounting In case of damaged sealing areas replace the unit or the adapter gt Weld or install the adapter into the tank pipe With clamp adapters etc the order of the installation steps differs Observe the notes in the installation instructions of the respective adapter 5 2 1 Installation LMT1x0 LMT1x1 and LMT1x2 gt Slide the supplied seal black O ring Fig or the green flat seal without figure across the thread onto the sensor and or check for correct position It seals the gap on the back between the sensor and the adapter gt Only use O rings that are supplied with the sensor Unsuitable O rings can cause problems with ingress resistance O ring too large Leakage on the sensor tip 2 Fig G O ring too flat Leakage on the gap on the back between the sensor a
8. e adapter and tighten at the hexagonal nut 2 Fig K until the sensor touches the end stop of the welding adapter 3 1 Max tightening torque for the hexagon AF 27 1 fig K 35 Nm Max tightening torques for the hexagon 2 fig gt After installation check the tank pipe for ingress resistance 1 Green flat seal 1 Hexagonal nut AF 27 2 Hexagonal nut LMT2x2 AF 32 LMT3x3 AF 36 3 End stop 5 3 Notes on the 3A compliant installation Some versions of the unit have a approval 3 1 Applications It is only valid in conjunction with adapters with 3A approval Available accessories www ifm com Data sheet search Accessories Cannot be used in plants that have to meet the criteria of E1 2 63 03 of the 3A standard 63 03 16 Draining must be ensured by an appropriate installation position position 1 4 The process connection must be provided with a self draining leakage port This is ensured by using the adapter with 3A approval For use of process connections from other manufacturers observe chapter 5 1 Installation location environment 5 4 Note on the use in accordance with EHEDG Depending on the version the unit has an approval in accordance with EHEDG It is only valid in conjunction with adapters with EHEDG approval www ifm com gt Data sheet search Accessories For use of process connections from other manufacturers observe chapter 5 1 Installation loca
9. e memory plug Parameters can be set quickly and easily via a correctly set memory plug order no E30398 To do so a suitable parameter set must be loaded to the memory plug e g via a PC EB The memory plug can also be used to save the current parameter setting of a unit and to transfer it to other units of the same type You can find more information about the memory plug in the technical documentation available free of charge at www ifm com 21 7 3 Parameter setting via the teach input EB In the teach mode the functionality is restricted only output OUT2 is available During teach operation the LEDs indicate the switching status of output OUT2 7 3 1 Requirements The teach input must be activated To do so there are two options Via the IO Link software 7 1 Parameter setting via PC Viathe memory plug 7 2 Parameter setting via the memory plug Output OUT2 must be configured as hysteresis function Hnc or Hno Another configuration causes an error during the teach process 7 3 4 Fault during the setting process The teach process itself is carried out by applying Ub to pin 4 6 Electrical connection E The tool which is available for this process is the teach button order no E30405 7 3 2 Set to the full vessel With the full adjustment the sensitivity of the unit can be set to the medium to be detected in an optimum manner this suppresses deposits and foam gt Fill the tank until the
10. e of the pipe no pressure loss Orientation independent installation possible On delay and off delay adjustable from 0 10 s O Link function 4 4 IO Link 1 Some unit types do not feature all indicated characteristics Technical data sheet 4 4 10 Link 4 4 1 General information This unit has an IO Link communication interface which requires an IO Link capable module IO Link master for operation The IO Link interface enables direct access to the process and diagnostic data and provides the possibility to set the parameters of the unit during operation In addition communication is possible via a point to point connection with a USB adapter cable You will find more detailed information about IO Link at www ifm com de io link 4 4 2 Device specific information You will find the 1000 necessary for the configuration of the IO Link unit and detailed information about process data structure diagnostic information and parameter addresses at www ifm com de io link 4 4 3 Parameter setting tools You will find all necessary information about the required IO Link hardware and software at www ifm com de io link 4 5 Application examples 4 5 1 Application examples for unit types with short probe Example LMT 121 1 Please note the warning Fig A Installation positions options in a tank e g for point level detection or as run dry protection Fig B Fill l
11. ection of almost all media even extremely adhering e g ketchup or conductive ones e g vegetable oil The sensitivity is preset at the factory Easy setup possible without any programming The unit can be set so that it is also suitable for the applications of other unit types following table 12 Factory setting Available process connections G1 2 G3 4 and G1 Different probe lengths for various mounting positions and for temperature decoupling 4 5 2 Type Preset Sensitivity 7 Probe Process EHEDG 3A length connection LMT100 Aqueous media Low Gia LMT110 Oils greases powders G1 2 LMT121 Media with low water Medium 11 mm G1 2 content Low 38mm G12 e Low f53mm G12 e LMT105 Aqueous media Low 253mm G12 e LMT202 Aqueous media Low 28 mm G3 4 tuning fork contour LMT302 Aqueous media Low 38 G1 tuning fork contour 1 Sensitivity adjustable 7 Parameter setting 2 Probe length measured from conical sealing edge Technical data 4 In the following table you can find a selection of tested media and the corresponding recommended unit type A complete list of media is available at www ifm com see tab Operating instructions in the data sheet Alcohol 40 vol s o s Ber e O Butter salted unsalted o o e Icecream 9 9 e Gese 09 Honey
12. etup of the unit Ensure that the product is suitable for your application without any restrictions fthe operating instructions or the technical data are not adhered to personal injury and or damage to property can occur mproper or non intended use may lead to malfunctions of the unit or to unwanted effects in your application That is why installation electrical connection set up operation and maintenance of the unit must only be carried out by qualified personnel authorised by the machine operator norder to guarantee the correct condition of the device for the operating time the device must only be used in media to which the wetted parts are sufficiently resistant Technical data The responsibility whether the unit are suitable for the respective application lies with the operator The manufacturer assumes no liability for consequences 3 of misuse by the operator Improper installation and use of the units result in a loss of the warranty claims 3 Functions and features The unit monitors the level of liquid viscous and powdery media in tanks and pipes It can be used for limit detection and run dry protection The separate setting of two switching thresholds enables the detection of two different media can be used for example for phase separation or differentiation of media 3 1 Applications Suitable for food and hygienic areas due to food grade materials and hygienic installation possibilities Det
13. evel monitoring in pipes 1 In case of strongly adhering and viscous media the installation positions 1 in fig A and fig B are only suited to some extent Residues might be detected as level 4 5 2 Application examples for unit types with longer probe Example LMT104 1 Maximum level Fig C Installation from the top to monitor the maximum level 1 or as overfill protection Different probe lengths enable different response levels Fig D Lateral installation the deeper position in the tank longer distance between the sensor tip and the tank wall ensures the suppression of strongly adhering and viscous deposits The variable clamp fitting order no E43322 allows variable mounting for unit types LMT1x4 and LMT 1x5 This enables e g high precision adjustment of the response point Moreover these types can be thermically decoupled from the process This also makes applications with higher process temperature and or with the risk of heat accumulation possible e g tank insulation Further information Technical data sheet E43322 Operating instructions E43322 10 4 5 3 Application example installation in existing tuning fork adapters 1 Maximum level Fig E Existing tuning fork welding adapters can be used in many cases with the unit types LMT2x2 and LMT3x2 with G3 4 or G1 process connection 3 1 Applications Typically the response point 1 remains in most cases For use of process connections
14. nd the adapter im P 2 NN LM IN DAT 4 S 1 O ring supplied with the adapter 2 Sealing cone sealing PEEK on metal gt Slightly grease the thread of the sensor using a lubricating paste which is suitable and approved for the application gt Screw the sensor into the adapter and tighten Max tightening torque 20 25 Nm gt After installation check the tank pipe for ingress resistance 5 2 2 Installation LMT1x4 and LMT1x5 The seal is formed by the flush front of the metal cone 2 Fig H As an option a PEEK sealing ring 3 is available Fig If the welding adapter is slightly warped or the sealing surface slightly damaged the use of the PEEK sealing ring is recommended The PEEK sealing ring is not supplied with the unit it can be ordered separately Order no E43323 1 Green flat seal 3 PEEK sealing beige 2 Metal sealing cone 4 Black flat seal Installation using the metal sealing cone fig H 2 gt Insert the green flat seal 1 and or check its position It seals the gap on the back between the sensor and the adapter gt Slightly grease the thread of the sensor using a lubricating paste which is suitable and approved for the application gt Screw the sensor into the adapter and tighten Max tightening torque 20 25 Nm gt After installation check the tank pipe for ingress resistance Installation using the PEEK seal E43323 fig gt
15. o9 o e Yoghurt plain Non dairy creamer Remoulade Olives Cream 30 oo o 9 Chocolate atapprox 40 c Water diste e o o o e Water tapwater o o e o e Sugar granulated sugar o e o x medium can detected without the need to change the factory setting 1 amp play o The medium can be detected The medium can be detected by setting the sensitivity with IO Link setting the sensitivity with IO Link The above mentioned details are non binding reference values Depending on the composition of the listed media deviations may occur gt Always check that the device is suitable for your application without any restrictions 3 2 Restriction of the application area Not suitable for abrasive media e g quartz sand and heavy bulk material e g stones For use in aggressive media acids and alkali gt Check the compatibility of the product materials beforehand Technical data sheet Media which are very inhomogeneous separate from each other thus forming separation layers e g oil layer on water gt Check the function by an application test Air or gas bubbles in liquid media may lead to unwanted switching operations gt Check the function by an application test If required adapt the sensitivity or set switching delays 7 Parameter setting Do not expose the probe tip to intensive sun radiati
16. on UV radiation 4 Function 4 1 Measuring principle The unit operates to the impedance spectroscopy method It evaluates the electrical behaviour of the media to be monitored in the frequency range between 50 and 200 MHz An electrical field is generated by the probe tip which is influenced by the level The various media show characteristic behaviour Also deposits or foam show significantly different behaviour Q When a suitable unit has been selected the presence of certain media is detected deposits or foam are suppressed In many cases the factory setting is sufficient For special applications it is also possible to adapt the sensitivity to the respective application 7 Parameter setting 4 2 Processing of the measured signals Factory setting Outputs OUT1 OUT2 complement each other OUT1 Hno OUT2 Hnc The readiness for operation and the switching status are indicated by LEDs 8 Operation 4 3 Other features of the unit Food grade materials Hygienic installation possibilities without dead band e Approvals conformities gt Technical data sheet ndication of the switching status and readiness for operation via LEDs After power on the unit is immediately ready for operation observe the application area of the individual unit types 3 1 Applications Defined position of the cable entry for angled sockets for use of ifm welding adapters Streamlined sensor geometry no blockag
17. p fitting and the sensor from time to time gt Replace if damaged When the medium is changed it may also be necessary to use another type of unit or adapt the sensitivity 3 1 Applications gt It is not possible to repair the unit gt After use dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations gt In case of returns ensure that the unit is free from soiling especially of dangerous and toxic substances For transport only use appropriate packaging to avoid damage of the unit 10 Notes on the regulation EC 1935 2004 The following components of the product are designed for permanent contact with food according to the regulation EC 1935 2004 Sensor tip made of PEEK Sealing ring made of PEEK 5 2 2 11 Technical data and scale drawing Technical data and scale drawing at www ifm com Data sheet search Enter the article number 25 12 Factory setting ur COSE ras sx m Dew s m EHE EN OFF 4 0 s mo ow FOU2 LM LN LN a LUAM Percentage values refer to the final value of the process value 7 Parameter setting Parameters not provided with LMT100 LMT110 and LMT121 More information at www ifm com 26 27
18. probe tip is completely covered gt Apply Ub to pin 4 for gt 2 lt 5 s T1 gt LEDs flash with 2 Hz JL IL 1L gt After the teach process the LEDs light for 2 s then the colours change to regular operating mode table 7 3 3 22 7 3 3 Changing the output function Output OUT2 can be changed from NC Hnc to NO Hno and vice versa Only the hysteresis functions Hnc Hno are available the parameters for the window functions can only be set via IO Link gt Apply Ub to pin 4 for gt 5 lt 10 s T1 gt LEDs flash with 2 Hz first UIL after 5 s it double flashes at 1 Hz JUL I gt After the change the LEDs light for 2 s then the colours change to regular operating mode table below Afterthe change the LEDs light depending on the level as follows UK No medium detected LEDs yellow LEDs green with Hnc with Hno Medium detected LEDs green LEDs yellow with Hnc with Hno 7 3 4 Fault during the setting process The teach operation is cancelled in case of a fault gt LEDs flash green yellow at 8 Hz gt The unit returns to the operating mode with unchanged settings Possible faults Time error teach time too long too short Internal sensor signal outside the measuring range Wrong output function No hysteresis function was selected as output function for OUT2 7 3 1 Requirements Process value too small 9 96 e g for powdery media setting SPx rP
19. tion environment gt Make sure that the sensor is integrated into the system in accordance with EHEDG 6 Electrical connection The unit must be connected by a qualified electrician The national and international regulations for the installation of electrical equipment must be adhered to Voltage supply to EN 50178 SELV PELV gt Disconnect power gt Connect the unit as follows Normal mode Teach operation 1 1 Factory setting Pin Connection Core colours for ifm sockets Brown 2 OUT2 pnp npn switching signal pnp npn switching signal 4 OUT1 e O Link Black Input for teach signal Factory setting OUT1 and OUT2 pnp switching signal EB In the factory setting the teach operation is deactivated For activation 7 1 Parameter setting via PC OU1 Tch Only output OUT2 is available in the teach mode EH Information about available sockets plugs at www ifm com Connection technology Sockets 18 7 Parameter setting When a suitable unit has been selected the presence of certain media is detected deposits or foam are suppressed In many cases the factory setting is sufficient 3 1 Applications For special requirements it is possible to adapt the sensitivity and other functions to the application Splashes wave movements and air bubbles can be compensated by setting a switching delay for example The parameters can be set prior to installation and setup
20. x has to be made manually 7 1 Parameter setting via PC 29 8 Operation When the supply voltage has been applied the unit is in the operating mode It carries out its evaluation functions and switches the outputs The following table shows the factory settings In this state OUT1 Hno and OUT2 Operating mode OUT OUT2 Unit ready for operation no medium Green OFF ON detected Unit ready for operation medium Yellow ON OFF detected No operating voltage Short circuit output 1 Flashes yellow ios amp 4 Short circuit Flashes yellow eee Error Error failure failure Teach operation 7 3 2 y to E E 7 3 3 Changing the output function Fault during the setting process LEDs flash green yellow at 8 Hz 1 According to the level In the factory setting the LEDs indicate the switching status of OUT1 exception teach operation 7 3 24 9 Maintenance repair disposal gt From time to time check the probe cap for deposits and damage Clean the unit if badly soiled In case of damage replace the unit gt After removal and before reinstallation of the unit carefully clean the probe neck and the installation slot especially the sealing cone with appropriate methods to ensure that it is resistant to ingress and without dead space If the variable clamp fitting E43322 is used Check the correct position of the safety chain or the securing wire between the clam
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