Operating instructions Electronic level sensor
Contents
1. o 10 5 4 Setting of the switch off delay ooocooinconnnncnoocnonoocncrconoonos 10 5 5 Response of the outputs in case of a fault e 10 5 6 Setting of the delay time after Signal lOSS o ocoooo o oo 10 6 Reset of all parameters to factory setting ococcononnmomommmmmmom 10 7 Changing basie Settings mineria 10 7 1 New entering of the probe length cooocococccocononccccncononoo 10 7 2 Setting to another medium enccroninas roscas riera 10 7 3 New entering of the type of probe USEd oocccocccocnccncnccconccnonooos OPI pola 50 Operating bilgi hers e esconder ooo 11 2 Reading of the set parameters ccccccccsssescsssscsssssseessseseeseeseseseees 11 3 Changing the display unit in the Run mode ooooooccocccociococococococcnocncocononos LS OE WCNC NON cian 11 5 Remarks on application related malfunctioN ocooccoccnononccnnncnnoos 11 6 Output response in different operating states ooccocnonccncncnoso TZ SCAG EO resists A A E E A ensues S E To VEC HMC AN dala S E E E PA acung EMDES os E e o O A eos geral o O decias 15 1 Minimum level monitoring with early warning and alarm 15 2 Pumping station empty the tank with overflow protection o Gee eee ere pete enti ES orca EE A PE nn mts 1 Preliminary no2. gt Select LEnG and set the value setting range 10 0 160 0 cm 4 0 63 0 inch Approach for coaxial probes gt Measure the total length L of the coaxial probe to a precision of 2 mm 0 1 inch gt Deduct 9 mm from the measured value L Lk 9 mm gt Round up the determined value step increment 0 5 cm 0 2 inch gt Select LEnG and set the value setting range 10 0 160 0 cm 4 0 63 0 inch Note After changing the probe length the values for OFS and the switching limits must also be reviewed re entered 10 7 2 Setting to another medium Select MEdI and set the value HIGH for water and water based media LOW for oils and oil based media Note In case of doubt carry out an application test to ensure the setting which is best for your medium 10 7 3 New entering of the type of probe used gt Select Prob and set the value rod for single probe COAX for coaxial probe e The detection of water and water based media is possible with the single probe as well as with the coaxial probe e The detection of oils and oil based media is only possible with the coaxial probe Therefore the parameter Prob is not available in case of the set ting MEdl LOW the value COAX is preset 29 11 Operation After power on the unit is in the Run mode normal operating mode It carries out its measurement and evaluation functions and generates output signa
3. Recommended remedies use a coaxial probe install a still pipe or bypass Note minimum diameter d 100 mm The upper access to the bypass A and the fill openings of the still pipe B must be above the maximum level The lower edges of the bypass C and of the still pipe D must be below the mini mum level This ensures that neither foam nor waves impact the sensor zone 6 1 2 Unit with coaxial probe e There are no minimum distances to the tank wall and the baffles B required e Minimum distance to the bottom of the tank 10 mm The vent hole A must not be covered by mounting elements or similar Do not install the unit in the im mediate vicinity of a fill opening No water jets must enter into the holes of the coaxial pipe Note in case of foam formation the vent of the coaxial pipe must be above the maximum level The lowest opening of the coaxial pipe must be below the minimum level 6 2 Installation of the probe Rod and coaxial pipe are not included in the scope of delivery They must be ordered separately gt 3 Items supplied 6 2 1 Installation of the rod Fixing of the rod gt Screw the rod to the unit and tighten it Recommended tightening torque 4 Nm For ease of installation and removal the rod connection can be rotated with out restriction Even if rotated several times there is no risk of damage to the unit Lmin 10 cm In case of high mechanical stress strong vibration
4. moving viscous media it may be necessary to secure the screw connection e g by a screw retaining com 14 pound Note such substances may migrate into the medium Make sure that they are harmless When using mechanical means of securing e g tooth lock washer protruding edges must be avoided They may cause interference reflection 6 2 2 Installation of the coaxial pipe only necessary if the unit is to be operated with coaxial probe The coaxial pipe and the rod must be of the same end length The coaxial pipe can be shortened 6 3 2 gt Screw the rod to the unit and tighten it Recommended tightening torque 4Nm gt Slide the sensor sealing A onto the thread gt Slide the coaxial pipe B onto the rod Carefully center it and carefully move the rod through the centring piece C for lengths gt 140 cm through both centring pieces of the coaxial pipe Do not damage the centring pieces gt Screw onto the sensor thread and tighten 6 3 Shortening of the probe 6 3 1 Shortening of the rod The rod can be shortened to adapt to different tank heights NOTE ensure that the rod length is not below the minimum permissible length of 10 cm Lmin Proceed as follows gt Screw the rod to the unit gt Mark the desired length L on the rod The reference point is the lower edge of the process connection gt Remove the rod from the unit gt Shorten the rod gt Remove all burrs and sharp edg
5. a launching plate For installation in open metal tanks tanks made of plastic or metal tanks with plastic lids a sufficiently large fixing plate a metal plate or simi lar must be used gt 6 4 1 6 4 2 For operation with single probe minimum distances to tank walls objects in the tank bottom of the tank and further level sensors must be adhered to gt 6 1 1 4 2 Operation with coaxial probe The coaxial probe is made up of an inner rod and an outer probe pipe coaxial pipe The rod is centered in the coaxial pipe by one or several spacers In case of operation with a coaxial probe media with a low dielectric constant e g oil and oil based media are detected in addition to aqueous media E No launching plate is required for operation with coaxial probe Further more no minimum distances to tank walls and objects in the tank are required 4 3 Applications e Water water based media e Oils oil based media only for operation with coaxial probe e Medium temperature 0 80 C permanent 0 90 C short term e Tank pressures 1 4 bar Application examples e Detection of coolant emulsion in a machine tool e Detection of cleaning liquid in a parts cleaning system e Monitoring of hydraulic oil in a hydraulic power unit only for operation with coaxial probe UK Restriction of the application area e The unit is not suitable for bulk materials e g plastic granulates e If the unit is to be used in acid
6. 2 possibly incorrect setting of the probe Check esa ul al Check length the parameter LEnG E 033 No reflection signal Check the application gt 11 5 Plausibility problem caused by abrupt ee E 034 level change Check the application gt 11 5 ISCx Flashing short circuit in switching Remove thachorcncuit output x SC Flashing short circuit in all switching Remove thachorkcnalll outputs The unit carries out plausibility checks to increase the operational reliability 31 11 5 Remarks on application related malfunction Measurement disturbed by foam formation Install the unit in a still pipe or bypass or strong turbulence e Set or increment dFo gt 10 5 8 Measurement disturbed by separation lay Remove the oil layer by suction stir the ers e g oil layer on water medium verify the composition I Clean the rod and the process connection Rod or process connection soiled Ra carry out a reset Installation conditions were not adhered to de d uadi UONS pers A Block distance exceeded by more than 10 Lower the level follow the instructions in mm chapter 6 Installation Atypical abrupt level changes Carry out a reset Correct the settings Follow the instructions in chapter 10 2 Carry out a reset Probe length type of probe or sensitivity setting to the medium set incorrectly The unit carries out plausibility checks to increase the operational reliability At
7. A gt Loc is displayed 108 TT During operation gt Loc is briefly displayed if you try to change parameter values For unlocking gt Press Mode Enter Set for 10 s BeBe D gt uLoc is displayed Cae s On delivery unlocked e Timeout If no button is pressed for 15 s during parameter setting the unit returns to the operat ing mode with unchanged values 25 10 2 Basic settings unit on delivery On delivery of the unit you must first enter the basic settings The complete parameter setting menu cannot be accessed before this 1 Malfunctions may occur if wrong basic settings are entered 10 2 1 Entering the probe length gt Apply operating voltage gt The initial display is shown gt Change to menu level 2 Select LEnG press SET for 5 s gt nonE is displayed gt Enter the probe length in cm Remarks on the determination of the probe length gt 10 7 1 gt Press Mode Enter briefly 10 2 2 Setting to the medium gt Select MEdI press SET for 5 s gt nonE is displayed gt Set the requested value HIGH for water and water based media LOW for oils and oil based media Note In case of doubt carry out an application test to ensure the setting which is best for your medium 10 2 3 Entering the type of probe used Select Prob press SET for 5 s gt nonE is displayed gt Set the requested value rod for single
8. CE 05 2011 704914 00 ifm electronic Operating instructions Electronic level sensor efectorico LR7000 Contents T Preliminary MOLE armisticio A 1 1 Symbols Used eee een eee 4 AA ne eee 4 Y A 5 4 Functions and features cite 6 4 1 Operation with single probe ccccccecsssssscsscssesssessssssscsesessssesssesaseeseeeees 6 4 2 Operation with coaxial probe sesion ainia 6 A AICA ee E E eee T A e E A E A EE EA A E E E 8 5 1 Measuring principle ccccessssssscscesssssssssssssessesessesessessesscsesoesaesessesansaseesas 8 5 2 Features Ol Me UMi eres ie E i reasoaa since menses eens 8 SEEE EEE E A 11 6 1 Installation location environment oconocicicnicnonicioncnconononcnnconononcnnonononos 11 6 1 1 Unit with single probe occoccoccconocicnrncononicorocnonincrncononanconcononas 11 E12 Unit WIM COAXIAL DIODO siseneda 14 6 2 Installation of the probe ooonconocconinncnconcnnoconoranancononornrononronornrorononnronnos 14 0 21 Mala O Me TO sado aio doce ee 14 6 2 2 Installation Of the coaxial pipe ociosa 15 6 9 SNOMENING OF ihe Pro csi tinte 15 63 1 Shortening of NE Ola 15 6 3 2 Shortening of the coaxial pipe ooocconocconocconcnconcnconcnoncnoconcncncnnnonos 16 6 4 Installation of the unit with single probe cccceessssessesseeeeeesseeesesseeeeees 16 6 4 1 Installation in metal tanks ooooiccnoncicciccnoccnconcononconconrocononnrnnoos 16 6 4 2 Installatio
9. Tesnit Protection IP 67 Ill Ambient temperature C ccccccccccscsesssscsssssssecsssscscsesssecsssesssscsssecessssesssssesesesseeesass 0 60 Medium temperature C A o O O N A A TA 0 80 o E E E OEA 0 90 Storage temperature C Shock resistance g 12 DIN EN 60068 2 29 11 ms Vibration resistance Of iii ns r s xi 2 5 RMS 1 1000 Hz IEC 60947 1 A active zone gt 12 Scale drawing 34 13 1 Setting ranges LENG Setting range 10 160 4 0 63 Step increment OFS Setting range Step increment The setting ranges for the switching limits SPx rPx FHx FLx depend on the probe length L In general the mong apps SPx FHx rPx FLX Step increment The values apply if OFS 0 The values in brackets apply to the setting MEdl LOW setting for the detection of oils and oil based media e rPx FLx is always smaller than SPx FHx If the value for SPx FHx is reduced to a value lt rPx FLX the position of rPx FLx also shifts e If rPx FLx and SPx FHx are close together approx 3 x step increment rPX FLX is changed automatically when SPx FHx is increased e If there is a greater distance between rPx FLx and SPx FHx rPx FLx maintains the set value even if SPx FHx is increased 14 Maintenance Keep the process connection free of deposits and foreign bodies gt In case of heavy soiling clean the process connection and the probe at re
10. als 10 5 1 Setting of the output function Select 0U1 OU2 and set the switching function Hno hysteresis function NO Hnc hysteresis function NC Fno window function NO Fnc window function NC Note If the upper switch point is used as an overflow protection the setting OUx Hnc NC function is recommended The principle of normally closed operation ensures that wire break or cable break is also detected 10 5 2 Setting of switching limits hysteresis function gt Make sure that for OU1 or OU2 the function Hno or Hnc is set Select SP1 SP2 and set the value at which the output switches Select rP1 rP2 and set the value at which the output switches off rPx is always smaller than SPx The unit only accepts values which are lower than the value for SPx 27 10 5 3 Setting of switching limits window function gt Make sure that the function Fno or Fnc is set for OU1 or OU2 Select FH1 FH2 and set the upper limit of the acceptable range gt Select FL1 FL2 and set the lower limit of the acceptable range FLx is always lower than FHx The unit only accepts values which are lower than FHx 10 5 4 Setting of the switch off delay Select dr1 dr2 and set the value between 0 2 and 5 0 s At 0 0 factory setting the delay time is not active The switch off delay is only active if hysteresis has been set as switching function OUx Hno
11. e sensor fig 2 The time between transmitting and receiving the pulse directly relates to the travelled distance D and the current level The reference for distance measure ment is the lower edge of the process connection The figure shows operation with single probe In case of operation with a coaxial probe the guided wave runs along the inside of the coaxial pipe 5 2 Features of the unit Easy set up e When the unit is supplied with operating voltage for the first time the probe length the medium to be detected and the type of probe used must be entered After this the unit is operational gt 10 2 e f necessary parameters for the output signals and optimisation of the monitor ing functions can be set gt 10 3 to 10 6 e All settings can also be carried out before installation of the unit e Reset to the factory settings is possible e Electronic lock can be set to prevent unintentional operations Display functions e The unit displays the current level either in cm inch or in percent of the final value of the measuring range Factory setting cm The display unit is defined by programming 10 3 In the Run mode it can be temporarily switched between length indication cm inch and percentage gt Press Set briefly gt The selected unit is displayed for 15 s the corresponding LED is lit With each push of the button the display type is changed e The set unit of measurement and the
12. es gt Screw the rod to the unit again and tighten it Recommended tightening torque 4Nm gt Precisely measure the rod length L note the value It must be entered during parameter setting of the unit 10 2 6 3 2 Shortening of the coaxial pipe The coaxial pipe and the rod must be of the same end length LI ZN AAA NAA SY LLY GREU CERT ANNAN INN NON MERERECERERERRE BEER _ 4 0 A 5 5 9 f y 1 y 5 6 5 1 5 0 A 6 y y y 5 A 3 d gt Remove fastening bracket and centring piece A B gt Shorten the coaxial pipe to the requested length Lk L 9 mm After shortening at least one hole C for insertion of the fixing bracket has to be left gt Remove all burrs and sharp edges gt Insert centring piece A at the lower end of the pipe and attach it using the fixing bracket B at the lower hole C Lk L 9mm Lx length of the coaxial pipe L length of the rod from the lower edge of the process connection 6 4 Installation of the unit with single probe 6 4 1 Installation in metal tanks NOTE In all cases the unit needs a metal surface to transfer the measured sig nals launching plate For installation in closed metal tanks the metal lid serves as a launching plate R 2 ways of installation are possible Screw in a G process connection in the tank lid fig A 16 e Installation in the tank lid using a flange plate e g for tanks with thi
13. eter setting 3 steps must be taken for each parameter setting Selection of the parameter gt Press Mode Enter until the re Eio D SP quested parameter is displayed a D Setting of the parameter value gt Press SET and keep it pressed Current setting value of the param eter flashes for 5 s After 5 s setting value is changed incrementally by pressing the button once or continuously by keeping the button pressed Numerical values are incremented continuously For reducing the value let the dis play move to the maximum setting value Then the cycle starts again at the minimum setting value Acknowledgement of the parameter value gt Press Mode Enter briefly gt The parameter is displayed again The new setting value is stored Setting of other parameters gt Start again with step 1 Finishing the parameter setting gt Press Mode Enter several times until the current measured value is displayed or wait for 15 s gt The unit returns to the operating mode 24 e Change from menu level 1 to menu level 2 Press Mode Enter until EF is displayed DEB ModeFnter Set PS O Press Set briefly gt The first parameter of the submenu is AER displayed here fres a e Locking unlocking The unit can be locked electronically to prevent unintentional settings gt Make sure that the unit is in the normal operating mode Mr Coe Coe gt Press Mode Enter Set for 10 s Vara
14. gular intervals In case of longer operation separation layers can form in the medium e g oil on water This applies especially to still pipes or bypasses gt Remove separation layers at regular intervals gt Ensure that the vent hole at the upper end of the coaxial pipe remains free gt Keep the interior of the coaxial pipe free from foreign bodies and soiling 39 15 Applications 15 1 Minimum level monitoring with early warning and alarm Switching output 1 early warning slightly above rP1 to suppress wave movements below preset level early warning start refilling hysteresis function normally closed Hnc Switching output 2 alarm min value reached again alarm reset below min value gt alarm hysteresis function normally open Hno XX X display value A early warning B alarm e f the level is below rP1 output 1 switches until liquid is refilled If SP1 is reached again output 1 switches off e f the level is above SP2 output 2 switches If the level falls below rPs or if there is a wire break output 2 switches off e By setting SP1 the maximum level can be controlled monitored the value of SP1 determines up to which level max is to be refilled When the maximum level is reached this is signalled by the LED OUT going out and output 1 switching off 36 15 2 Pumping station empty the tank with overflow protection Switching output 1 control to empty tank Upper
15. ion Even if rotated several times there is no risk of damage to the unit 7 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 according to EN 50178 SELV PELV For the scope of validity cULus The device shall be supplied from an isolating transformer having a secondary Listed fuse rated as noted in the following table Overcurrent protection Control circuit wire size Maximum protective device rating Arper 0 20 2 gt Disconnect power gt Connect the unit as follows Pin connection Core colours for ifm sockets 4 OUT1 switching output 1 Note when the unit is supplied with operating voltage for the first time the probe length the medium to be detected and the type of probe used must be entered After this the unit is operational 10 2 2 OUT2 switching output 2 20 8 Operating and display elements 0090090000 1 to 8 indicator LEDs LED 1 green indication of the level in cm LED 2 green indication of the level in inch LED 3 green indication of the level in of the final value of the measuring range LED 4 LED 6 not used LED 7 yellow output 1 is switched LED 8 yellow output 2 is switched 9 Alphanumeric display 4 digits Indication of the current level Operation and fault indication Indicat
16. ion and orientation of the head of the unit after installation Safe state 10 In case of a fault a safe state can be defined for each output If a fault is detected or if the signal quality is below a minimum value the out puts pass into the safe state For this case the response of the outputs can be set via the parameters FOU1 FOU2 Temporary loss of signal caused e g by turbulence or foam formation can be suppressed by a delay time 10 5 6 dFo During the delay time the last measured value is frozen If the measured signal is received again with sufficient strength within the delay time the unit continues to work in normal operation If however it is not received again with sufficient strength within the delay time the outputs pass into the safe state 6 Installation 6 1 Installation location environment e Vertical installation from the top is preferred 6 1 1 Unit with single probe e Fora safe function the unit requires a launching plate gt 6 4 e For optimum operation the unit should be installed as near as possible to the tank wall Distance between the rod and the tank wall minimum 40 mm maximum 300 mm e The following minimum distances between the rod and tank walls objects in UK the tank B tank bottom and other level sensors must be adhered to e For tank walls which are not straight steps supports or other structures in the tank a distance of 50 mm to the tank wall must be adhered t
17. ion of the parameters and parameter values 10 Set button Setting of the parameter values scrolling by holding pressed incrementally by pressing once Change between cm inch indication and percent indication in the normal operating mode Run mode 11 Mode Enter button Selection of the parameters and acknowledgement of the parameter values 21 9 Menu 9 1 Menu structure ARABE JE or OF ef y af af A ele lee 5 T Ie eje y 22 9 2 Explanation of the menu SPA FHL SP2 rP2 FHIFL2 OUx Output function for OUTx e Switching signal for the level limit values hysteresis function H or window function F either normally open no or normally closed nc Offset value for level measurement UK Extended functions opening of menu level 2 rES Restore factory settings dr1 Switch off delay for OUT1 The menu item is only active if OU1 Hno or Hnc dr2 Switch off delay for OUT2 The menu item is only active if OU2 Hno or Hnc OFS EF FOU FOU2 dFo Uni SELd TT LEnG Length of the rod MEdI Medium to be detected Prob Type of probe used single probe or coaxial probe The menu item is only active if MEdI HIGH 23 10 Parameter setting During parameter setting the unit remains in the operating mode internally It continues its monitoring function with the existing parameters until the parameter setting has been completed 10 1 General param
18. lowing is necessary for installation and operation e 1 rod for operation of the unit with single probe 4 1 e plus 1 coaxial pipe for operation of the unit with coaxial probe 4 2 e mounting material The following components are available as accessories Length cm inch Order number IM Coaxial pipes with process connection G34 Coaxial pipes with process a Flange plates 73 901 NPT Only use rods and coaxial pipes from ifm electronic The optimum function is not ensured when using components from other manufacturers For the correct function when used with single probe the unit needs a large enough metal launching plate The flange plates that are available as accessories are not sufficient as launching plates for suitable launching plates gt 6 4 1 6 4 2 4 Functions and features The unit continuously detects the level in tanks and generates output signals ac cording to the parameter settings 2 switching outputs are available They can be set separately 4 1 Operation with single probe The single probe is made up of one individual rod Operation with single probe is suited for the detection of aqueous media in particular of heavily soiled aqueous media For the correct function with single probe the unit needs a large enough metal launching plate It is necessary for transferring the microwave pulse to the tank with optimum transmission power For installation in closed metal tanks the tank lid serves as
19. ls ac cording to the set parameters 11 1 Operating indicators Current level in of the final value of the measuring range E bevelbelow the active zone FULL numerical value Level has reached or ened the maximum measuring alternately range overflow warning CAL Initialisation phase after power on On delivery the unit is not operational Basic settings required gt 10 2 Loc Unit electronically locked parameter setting impossible For unlocking press the two setting buttons for 10 s Unit is unlocked parameter setting is possible again 11 2 Reading of the set parameters gt Press Mode Enter briefly to scroll the parameters gt Press Set briefly to indicate the corresponding parameter value for about 15 s After another 15 s the unit returns to the Run mode 11 3 Changing the display unit in the Run mode switching between length indication cm inch and percentage gt Press Set briefly in the Run mode gt The selected unit is displayed for 15 s the corresponding LED is lit With each push of the button the display type is changed 30 11 4 Error indications T Possible cause Recommended measures E 000 Fault in the electronics Replace the unit E 030 incorrect setting of the probe length Es Check whether the probe is still at E 031 Probe detached from the unit possibly ance toinen Check the parameter LEnG Measurement considerably disturbed E 03
20. n in plastic TANKS carioca roces 18 6 4 3 Installation using a flange plate oooococioncicio ncncnccooccononorconos 18 6 5 Installation of the unit with coaxial probe in the tank oo o o 19 F El CMICA COMEN ls a 20 8 Operating and display elements oococcicicicnicioicncccnonocononcnononrnronononornono nono 21 A Tee EE A A E A atmet temes nt 22 AA APP is ecadac ness cionats 22 Sd cn 23 10 Parameter Seting raso anta 24 10 1 General parameter Setting cccccscsscssssssesesssesssssssssssssssesesassseserseseess 24 2 10 2 Basic settings unit ON CelIVETY ceesescccesesesessssesetesssscesessseeeceteseeeees 10 2 1 Entering the probe length oc cccoccnononccncnrnonorncocononionanconos 10 2 2 Setting to the MedilM oooococonccicnonocionononcococenononconononcrornoncncrno cinco 10 2 3 Entering the type of probe used ooocconocccnocccnocccccncononcnnnconcncncononos 10 3 Configuration of the display ccccssssssssssssssscsssssssssessssssseesssssererseseees 10 4 Offset Setting cccssssssesssssssssssssssssssessssssesseesscsseesessseesesasaesesasasersasaseees 10 5 SEWING OF OUIDUT SIQMANS coit oraci n 10 5 1 Setting of the output fUNC ION coccononcnncconcnnnconcnoncncononcncononononos 10 5 2 Setting of switching limits hysteresis function 10 5 3 Setting of switching limits window function
21. n walls fig For installation in open tanks the unit must be installed using a metal fixture It serves as a launching plate R Minimum size 150 x 150 mm for a square fixture 150 mm diameter for a circular fixture If possible mount the unit in the middle of the fixture The distance D2 must not be below 40 mm fig C higher for rod lengths gt 70 cm and in case of heavy soiling gt 6 1 1 The lower edge of the process connec tion should be flush with the installa tion environment Use seals or wash ers D to reach the required height When using the ifm flange plates flush installation is ensured 6 4 2 Installation in plastic tanks To enable sufficient transfer of the measured signal note in case of installation in plastic tanks or metal tanks with plastic lid e Adrill hole with a minimum diam eter of 150 mm must be applied to the plastic lid e For installation of the unit a flange plate launching plate R must be used which sufficiently covers the drill hole Minimum distance between rod and tank wall 80 mm higher for rod lengths gt 70 cm and in case of heavy soiling 6 1 1 When installed in plastic tanks there may be deterioration caused by electromagnetic interference Remedy e Apply a metal foil to the outside of the tank e Apply a shielding screen between the level sensor and other electronic units e Operation with coaxial probe efficiently protects the unit from elec tr
22. o e For rod lengths gt 70 cm the rod can be considerably deflected by movement of the medium To avoid contacting the tank wall or other structures in the tank in such cases the minimum distances should be increased Reference values Rod length Distance to the tank wall or structures in the tank 70 100 om 100 160 om e f the medium is strongly polluted there is the risk that a bridge forms between the rod and the tank wall or structures in the tank To avoid incorrect meas urements adhere to increased minimum distances depending on type and intensity of the soiling e For installation in pipes The inside pipe diameter d must be at least 100 mm Only install the unit in metal pipes e For installation in connection pieces The diameter of the connection piece d must be at least 50 mm The height of the connection piece h must not exceed 40 mm e The maximum level must not ex ceed the limit of the block distance BD 30 mm If it is exceeded by more than 10 mm malfunctions can occur Remedies arrange for a spout in stall the unit in a connection piece Do not install the unit in the immediate vicinity of a fill opening If possible install a fill pipe A in the tank Minimum distance between the fill pipe and the rod 50 mm higher for rod lengths gt 70 cm and in case of heavy soiling gt 6 1 1 12 Strong foam formation and strongly moving surfaces can lead to malfunctions
23. omagnetic interference Please note the restrictions regarding the application area 4 3 6 4 3 Installation using a flange plate Flange plates are not included in the scope of delivery They must be ordered separately chapter 3 18 gt Arrange for a bore hole in the tank lid It must have a minimum diameter d to enable sufficient transfer of the measured signal to the probe The diameter depends on the wall thickness of the tank lid Wall thickness mm 8 11 Bore hole diameter mm gt Install the flange plate with the flat surface showing to the tank and fix it with appropriate screws A seal B can be inserted between flange plate and tank some flange plates are supplied with seal gt Ensure cleanness and evenness of the sealing areas especially if the tank is under pressure Tighten the fixing screws sufficiently gt Screw the unit in the flange plate and tighten firmly gt Make sure that the supplied sensor seal A is correctly positioned 6 5 Installation of the unit with coaxial probe in the tank gt Seal the process connection e For pipes with G process connection slide the supplied seal onto the thread of the coaxial pipe e For pipes with G NPT process connection apply a suitable sealing material e g Teflon tape gt Screw the sensor with the coaxial pipe into the tank and tighten it After installation the sensor housing can be aligned It can be rotated without restrict
24. or Hnc 10 5 5 Response of the outputs in case of a fault gt Select FOU1 FOU2 and set the value on output switches in case of a fault OFF output switches off in case of a fault Factory setting FOU1 and FOU2 OFF Faults faulty hardware too low a signal quality untypical level curve Overflow is not considered to be a fault 10 5 6 Setting of the delay time after signal loss Select dFo and set the value between 1 and 5 s At 0 factory setting the delay time is not active Mind the dynamics of your application In case of fast level changes it is recommended to adapt the value step by step 10 6 Reset of all parameters to factory setting gt Select rES then press Set and keep it pressed until is displayed gt Press Mode Enter briefly gt During the storage operation the display goes out for several seconds Then the unit restarts and the factory settings are restored Note On delivery the unit is not operational First the basic settings must be entered 10 2 28 10 7 Changing basic settings Required after a factory reset rES and after changes to the probe or to the ap plication area 10 7 1 New entering of the probe length Approach for single probes gt Measure the rod length L to a precision of 2 mm 0 1 inch L lower edge of the of process connection to the rod end gt Round up the measured value step increment 0 5 cm 0 2 inch
25. probe COAX for coaxial probe e The detection of water and water based media is possible with the single probe as well as with the coaxial probe e The detection of oils and oil based media is only possible with the coaxial probe Therefore the value COAX is preset for the parameter Prob when setting MEdI LOW the value rod is not available Then the unit changes to the operating mode For further parameter setting the menu can be opened The parameters LEnG MEdI and Prob can be accessed and modified just like all other parameters 26 10 3 Configuration of the display gt Select Uni and set the unit of measurement cm inch Factory setting cm Select SELd and set type of indication L The level is indicated in cm or inch L The level is indicated in percent of the final value of the measur ing range OFF The display is switched off in the operating mode When one of the buttons is pressed the current measured value is displayed for 15 s The LEDs remain active even if the display is deactivated 10 4 Offset setting gt Select OFS and enter the distance between bottom of the tank and lower edge of the probe Afterwards display and switch points refer to the real level Factory setting OFS 0 Note Set OFS before setting the switching limits SPx rPx Otherwise the switching limits shift by the value of the set offset 10 5 Setting of output sign
26. s or alkalis in hygienic areas or in electroplating applications first check the compatibility of the product materials chapter 13 Technical data with the media to be monitored e Incorrect measurements or signal loss may be caused by the following media Highly absorbing surfaces e g foam Intensely bubbling surfaces Media which are very inhomogeneous separate from each other thus forming separation layers e g oil layer on water Check the function by an application test In case of signal loss the unit displays E 033 and switches the outputs to a defined state 11 5 e The unit is not suitable for applications where the probe is subjected to per manent and high mechanical stress e g strongly moving viscous media or strongly flowing media e In case of operation with single probe use preferably in metal tanks When installed in plastic tanks deterioration caused by electromagnetic interference may occur noise immunity to EN61000 6 2 Remedy 6 4 2 e In case of operation with coaxial probe not suitable for viscous media and media prone to formation of deposit 5 Function 5 1 Measuring principle The unit operates to the principle of guided wave radar It measures the level using electromagnetic pulses in the nanosecond range The pulses are transmitted by the sen sor head and guided along the rod fig 1 When they hit the medium to be detected they are reflected and guided back to th
27. switching status of the outputs are indi cated by LEDs Switching functions The unit signals via two switching outputs OUT1 OUT2 that a set limit level has been reached or that the level is below the limit value For each output the following switching functions can be selected e Hysteresis function normally open figure 1 OUx Hno e Hysteresis function normally closed figure 1 OUx Hnc First the set point SPx is set then the reset point rPx with the requested UK difference Window function normally open figure 2 OUx Fno e Window function normally closed figure 2 OUx Fnc The width of the window can be set by means of the difference between FHx and FLx FHx upper value FLx lower value L level HY hysteresis FE window e For each switching output a switch off delay of max 5 s can be set e g for especially long pump cycles Offset for indicating the real level in the tank The zone between tank bottom and lower edge of the probe can be entered as offset value OFS So display and switch points refer to the actual level Probes for different tank heights The unit can be installed in tanks of different sizes Probes in different lengths are available To adapt to the tank height each probe can be shortened The minimum probe length is 10 cm the maximum probe length is 160 cm Probe and housing can be rotated without restriction This enables easy instal lat
28. te 1 1 Symbols used gt gt Instruction Reaction result Designation of pushbuttons buttons or indications Cross reference Important note Non compliance can result in malfunctions or interference Information Supplementary note 2 Safety instructions Please read this document prior to set up of the unit Ensure that the product is Suitable for your application without any restrictions The unit must be connected by a qualified electrician The national and international regulations for the installation of electrical equip ment must be adhered to The unit complies with the standard EN 61000 6 4 and is a class A product The radiated energy of the microwaves is for example much below that of mobile phones According to the current state of science the operation of the unit can be classified to be harmless to human health The unit may cause radio interference in domestic areas If interference occurs the user must take appropriate remedial actions Improper or non intended use may lead to malfunctions of the unit or to un wanted effects in your application That is why installation electrical connec tion set up operation and maintenance of the unit must only be carried out by qualified personnel authorised by the machine operator For the scope of validity cULus chapter 7 Electrical connection 3 Items supplied e Level sensor LR7000 e Operating instructions In addition the fol
29. tput 1 and output 2 switched off Below min value output 1 switched on and output 2 switched off 38 16 Factory setting SP1 FH1 50 SP FHmax rP1 FL1 50 rP FLmax SP2 FH2 100 SP FHmax rP2 FL2 100 rP FLmax os CE ee ES CO CIS SP FHmax LEnG value minus 3 rP FLmax LEnG value minus 3 5 When the LEnG value is entered the program calculates the basic setting More information at www ifm com 39
30. value exceeded submersible pump ON rP1 Lower value reached submersible pump OFF OU1 Hysteresis function normally open Hno Switching output 2 overflow protection Maximum value exceeded alarm Slightly below SP2 to suppress wave movements OU2 Hysteresis function normally closed Hnc 102 XX X display value A emptying B overflow protection e If SP1 is exceeded output 1 switches submersible pump ON If the level is below rP1 again output 1 switches off submersible pump OFF e If SP2 is exceeded or if there is a wire break output 2 switches off 3 7 15 3 Storage tank Monitoring of the acceptable range alarm and level control Switching output 1 refilling SP1 Upper preset value reached finish refilling rP1 Below lower preset value start refilling OU Hysteresis function normally closed Hnc Switching output 2 safety function min max Max value exceeded alarm Below min value gt alarm Window function normally open Fno XX X display value A refill B min monitoring C max monitoring e f the level is below rP1 output 1 switches until liquid is refilled If SP1 is reached again output 1 switches off e f the level is below FL2 or above FH2 or if there is a wire break output 2 switches OFF gt alarm e The logical operation between the outputs 1 and 2 indicates whether there is overflow or the actual level is below the minimum level Overflow ou
31. ypical level changes can be caused e g by contact with the rod They can also be caused by heavy soiling or turbulence With the parameter dFo the response of the unit can be delayed S 10 5 8 Carry out a reset power off and on again after rectifying the fault and to reset the error message 11 6 Output response in different operating states OUT1 OUT2 nitialisation Normal operation according to the level and according to the level and P OU1 setting OU2 setting Fault E 0xx OFF for FOU1 OFF OFF for FOU2 OFF ON for FOU1 on ON for FOU2 on 32 12 Scale drawing Dimensions in mm 1 display 2 status LEDs 3 programming buttons 4 seal inch min probe length 6 4 L 4 L 6 2 4 1 6 L 1 6 L 2 4 L The values in brackets apply to the setting MEdI LOW setting for the detection of oils and oil based media 33 13 Technical data Operating voltage V Current rating mA Short circuit protection pulsed protected against reverse polarity and overload Voltage drop V Current consumption mA Switch point accuracy CM ccocccononociononecononononinconenenenrnrncnrorenenenoss 1 5 0 5 A a 05 Max speed of the level change mm s Dielectric constant medium Max tank pressure bar Housing materials stainless steel 304 1 4301 FKM NBR PBT PC PEI TPE V PTFE Materials wetted parts Stainless steel 303 1 4305 PTFE NBR
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