Operating instructions Electronic level sensor LR7000 LR7300
Contents
1. normal operating mode It carries out its measurement and evaluation functions and generates output signals ac cording to the set parameters 11 1 Operation indication Numerical value LED 1 Current level in cm Numerical value LED 2 Current level in inch LED 7 LED 8 Switching status of the corresponding output EDI Level below the active zone FULL numerical value Level has reached or exceeded the maximum measuring alternately range warning overflow CAL Initialisation phase after power on On delivery the unit is not operational Entering of the probe length is required 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 WATT Factory reset takes place LED 3 LED 6 not used 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 23 11 3 Error indication ErrO Fault in the electronics Replace the unit Err1 Measurement disturbed by foam forma Install the unit in a still pipe or bypass tion or strong turbulence Set or increment dFo 10 4 6 Measurement disturbed by separation Remove the oil layer by suction stir the layers e g oil layer on water medium verify the2. Factory setting OFS 0 Note Set OFS before defining the switching limits SPx rPx Otherwise the switching limits shift by the value of the set offset 10 4 Setting of output signals 10 4 1 Setting of the switching limits gt Select SP1 SP2 and set the measured value at which the output switches gt Select rP1 rP2 and set the measured 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 10 4 2 Setting of the output function gt Select OU1 OU2 and set the switching function Hno hysteresis function NO Hnc hysteresis function NC Fno window function NO Fne 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 4 3 Setting of the switch off delay gt 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 or Hno 21 10 4 4 Response of the outputs in case of a fault gt Select FOU1 FOU2 and set the value on output switches ON in case of a fault OFF output switches OFF in case of a fault Factory setting FOU1 and
3. composition Probe or process connection soiled Clean the probe and the pr RE nection carry out a reset Installation conditions were not Follow the instructions in chapter 6 adhered to Installation Block distance exceeded by more than Lower the level follow the instructions 10 mm in chapter 6 Installation Atypical abrupt level changes Carry out a reset SCx Flashing short circuit in switching Remove ihe chor emul SC Flashing short circuit in all switching Remove he shonra The unit carries out plausibility checks to increase the operational reliability Atypical level changes can be caused e g by contact with the probe They can also be caused by heavy soiling or turbulence With the parameter dFo the response of the unit can be delayed 10 4 5 Carry out a reset power off and on again after rectifying the fault and to reset the error message 11 4 Output response in different operating states OUT1 OUT2 initialisation according to the level and according to the level and AE APRA OU1 setting OU2 setting OFF for FOU1 OFF OFF for FOU2 OFF Error Err0 Err1 ON for FOU1 on ON for FOU2 on 24 12 Scale dravving LR7000 F Dimensions in mm 1 display 2 status LEDS 3 programming buttons L probe length A active zone 1 inactive zone 1 2 inactive zone 2 LR7300 ee 34 NPT Dimensions in mm 1 display 2 status LEDs 3
4. 4 Setting of OU SIg al Sac Ad AEO AGO met 21 10 5 Reset of all parameters to factory Setting cseccssssssssessssssssssssesersssesseasseseess 22 10 6 Entering of the probe length after changing the probe length 1111 111 1 22 De SEWER ACE CCETT CEA 23 NK EODEGIONINAIEANO aaa R O O AR A A AR AA W GC 23 11 2 Reading of the set parameters cccesecssscsssssssssssssscsssessssesssessesseseseesesesaesereseess 23 AON CO NO i ERN ZYC 24 11 4 Output response in different operating States 222uae ena eran aa aa 24 Locale ONN a E I 25 Eee Ko e E AGR AAAA AEC A E 27 15 EEE FANGES E mentat 27 14 MAIMCNINCE EEA E AA AES E 28 TS ADPIC ANONS aan GR AGO A NEE EA EA EE EEEE 29 15 1 Minimum level monitoring with early warning and alarm c ccceecseceeeeeeeeeeees 29 15 2 Pumping station empty the tank with overflow protection s s sussss1 1 111211 30 5 to UO Ae cia ARA A O E EI A OO EA RS CEC 31 16 Factory SEC et tr ee TC ke Tc her Tm tn er ern 32 1 Preliminary note 1 1 Symbols used gt Instruction gt Reaction result Designation of pushbuttons buttons or indications Cross reference Important note Non compliance can result in malfunctions or interference tg 2 Safety instructions The unit must be connected by a qualified electrician The national and international regulations for the installation of electrical equip ment must be adhered t
5. 6 5 Installation of the unit using a flange plate The follovving flange plates are available as accessories Fange piate 13 OU O esa aaa aia aieia AEGEE order no E43201 Flange plate 65 80 Games order no E43202 Flange plate 73 90 84 NPT o ccccsccscscsssssscscecsescsesesesesecscssseseseceesacsssesees order no E43206 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 placed between the flange plate and the tank the flange plates E43201 and E43206 are supplied with the 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 For LR7000 make sure that the supplied sensor seal A is correctly positioned e For LR7300 appropriate sealing material e g Teflon tape can be applied After installation the sensor housing can be aligned It can be rotated without restriction Even if rotated several times there is no risk of damage to the unit 14 7 Electrical connection The unit must be connected by a qualified electrician The national and in
6. CE 02 2009 704381 01 ifm electronic Operating instructions Electronic level sensor efectoriso LR7000 LR7300 Contents LEC MOE r OOO EA inch 3 BIO MEC cremats san 3 ZASZIEWAI SIEUO EE AE 3 EBRE SUC CO ERC 4 4 Functions and features aaa O EA Et ACE BO EK EE 4 BRUC MON ERACI 5 Bye IIS AS UPN ONCE ciment GW A A O AEGEE 5 5 2 Features of he UN iii ot Gema Gotes timiteit tt i tim siti iii 6 DS CNN GRWR E E A OEG Acc 8 6 1 Installation location environment ss sasanka aaaanananaaia 8 02 Installation or WE PODE sairin r NEA 11 Go SONG ING IE DIODE zaa OE O AAA AE AE EO ACER ERO 12 6 4 Installation of the unit in a tANK ec ccceccscsesseecseesscsssseececsesessssssesessesessssesesesseseseses 12 6 5 Installation of the unit using a flange plate usu aaa aaa aaa aa aaa aaaasanana 14 CElCGNAECOMECNON a OE EA EE EWA 15 8 Operating and display CleMent cccscsssssesscsssscssssessssesssecesseseesssesesseserseseseaees 16 TO MT laa a entice ch R AE goes ce oot ce cre A na oat tes eave AAAA 17 9 1 Menu RE CE UU Caceres tament ton 17 92 Explanation OF EM Cn IU serros neiii ERr a nN E r a 17 10 FaranieleF SSiN sier E EEE E E 18 10 1 General parameter setting cccccsssessssssssscsssssssssesssscessessssesesesaessessesesesesasasesereess 18 10 2 Entering of the probe length unit on delivery asusa aaa saa aa aaa aa aaaaacncaea 20 M BaSe CCM OE oO O ad 21 10
7. FOU2 OFF Faults faulty hardware too low a signal quality untypical level curve Overflow is not considered to be a fault 10 4 5 Setting of the delay time after signal loss gt 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 5 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 WAIT is displayed for several seconds Then the unit restarts and the factory settings are restored Note On delivery the unit is not operational You first must enter the value for the probe length 10 2 10 6 Entering of the probe length after changing the probe length Required after a factory reset rES or in case of subsequent changes of the probe length gt Measure the probe length L to a precision of 2 mm 0 1 inch L lower edge of the process connection to the probe end gt Round up the measured value step increment 0 5 cm 0 2 inch gt Select LEnG and set the value between 15 0 and 160 0 cm 6 0 and 63 0 inch Note After changing the probe length the values for OFS and the switching limits must also be re entered 22 11 Operation After power on the unit is in the Run mode
8. 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 ne Unit of measurement cm or inch Length of the probe Restore factory setting 10 Parameter setting During parameter setting the unit remains in the operating mode It continues its monitoring function with the existing parameters until the parameter setting has been completed 10 1 General parameter setting 3 steps must be taken for each parameter setting Selection of the parameter gt Press Mode Enter until the re B ie di M nter Set quested parameter is displayed D Setting of the parameter value gt Press Set and keep it pressed gt Current setting value of the param eter flashes for 5 s gt 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 3 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 wa
9. Px the posi tion of rPx also shifts If rPx and SPx are close together about 3 x step increment rPx is changed automatically when SPx is increased e If there is a greater difference between rPx and SPx rPx maintains the set value even if SPx is increased 14 Maintenance gt Keep the process connection free of deposits and foreign bodies gt In case of heavy soiling clean the process connection and the probe at regular 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 28 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 U1 hysteresis function normally closed Hnc Switching output 2 alarm SP2 min value reached again alarm reset below min value alarm OU2 hysteresis function normally open Hno XX X display value A early warning B alarm f the level is below rP1 output 1 switches until liquid is refilled If SP1 is reached again output 1 switches off If the level is above SP2 output 2 switches If the level falls below rP2 or if there is a wire break output 2 switches off Bysetting SP1 the maximum level can be cont
10. asusa eau aaa aaa aaa asza aaa aaaazaaaaaaiaanitnia order no Flange plate 73 90 GA saa aaa aaa aaa aaa aaa eion ninii ies order no Flange plate 0030000 aoi AA AAAA EEEE order no Flange plate 73 90 4 NPT aaa mn ms st s AO order no E43203 E43204 E43205 E43207 E43208 E43209 E43210 E43201 E43202 E43206 Only use ifm probes If other probes are used optimum function is not ensured For correct function the unit needs a large enough metal transfer plate It is neces sary for transferring the microwave pulse to the tank with optimum transmission power For installation in closed metal tanks the tank lid serves as a transfer plate For installation in open tanks a large enough fixing plate or similar must be used chapter 6 Installation 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 Application area e Hydrous media e Medium temperature 0 80 C Tank pressures 1 4 bar Application examples Detection of coolant emulsion in a machine tool e Detection of cleaning liquid in a parts cleaning system Restriction of the application area The unit can only be used in metal tanks The unit is not suitable for media with a dielectric constant lt 20 e g oils fats plastic granulates bulk material e If the unit is to be use
11. d in acids or alkalis in hygienic areas or in electroplating applications First check the compatibility of the product materials gt chapter 13 Technical data with the media to be monitored UK 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 Err1 and switches the outputs to a defined state 10 4 4 The unit is not suitable for applications where the probe is subjected to permanent and high mechanical stress e g strongly moving viscous media or strongly flowing media 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 probe fig 1 When they hit the medium to be detected they are reflected and guided back to the 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 measurement is the lower edge of the process connec tion 5 2 Features of the unit Easy set up When operating voltage is applied to
12. ex ceed the limit of the block distance BD 40 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 probe 50 mm higher for probe lengths gt 70 cm and in case of heavy soiling see above Strong foam formation and strongly moving surfaces can lead to malfunctions Recommended remedies installation of a still pipe or a 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 the still pipe D must be below the minimum level This ensures that neither foam nor waves impact the sensor zone 10 6 2 Installation of the probe The probe is not included in the scope of supply It must be ordered separately The following probes are available as accessories Probe L 24 cm 9 5 INChia ce eeeceseceecsscesccsecesseersesevnecersseeseeseseennsersenneetens order no Probe L 45 em 17 7 ICM aan aka A AEG order no Probe L 70 cm 27 6 MEN ccsiokcnad inka odc A order no Probe L 100 cm 39 4 inh ce eeccesesscsscesccesceesesesessseessnsesesneeerecseeennens order no Probe L 120 cm 47 2 inh ccccccccscsccccscscessccsseesesssssseecse
13. h 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 15 cm the maximum probe length 160 cm Probe and housing can be rotated without restriction This enables easy instal lation and orientation of the head of the unit after installation Safe state n case of a fault a safe state can be defined for each output e If a fault is detected or if the signal quality is below a minimum value the outputs pass into the safe state For this case the response of the outputs can be set via the parameters FOU1 FOU2 e Temporary loss of signal caused e g by turbulence or foam formation can be suppressed by a delay time 10 4 6 dFo During the delay time the last measured value is frozen If the measured signal is received again in sufficient strength within the delay time the unit continues to work in normal operation If however it is not received again in sufficient strength within the delay time the outputs pass into the safe state 6 Installation 6 1 Installat
14. he unit and tighten Recommended tightening torque 4 Nm gt Measure exactly the probe length L note the value It must be entered during parameter setting of the unit 10 2 Entering of the probe length unit on delivery 6 4 Installation of the unit in a tank NOTE In all cases the unit needs a metal surface to transfer the measured signals transfer plate For installation in closed metal tanks the metal lid serves as a transfer plate R 2 ways of installation are possible Screwing in a process connection in the tank lid fig A Process connection for LR7000 G for LR7300 34 NPT Installation in the tank lid using a flange plate e g for tanks with thin walls fig 12 For installation in open tanks the unit must be installed using a metal fixture It serves as a transfer 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 probe lengths gt 70 cm and in case of heavy soiling 6 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 For the NPT connection LR3300 the height can be slightly corrected by means of appropriate sealing material such as Teflon tape When using the ifm flange plates flush installation is ensured
15. ion location environment Vertical installation from the top is preferred For optimum operation the sensor is to be installed as near as possible to the tank wall Distance between the probe and the tank wall minimum 40 mm maximum 300 mm The following minimum distances between the probe and tank walls objects in the tank B tank bottom and other level sensors must be adhered to 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 to For probe lengths gt 70 cm the probe can be considerably deflected by move ment 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 Probe length Distance to the tank wall or structures in the tank 70 100 om 100 160 om If the medium is strongly polluted there is the risk that a bridge forms between the probe 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 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
16. it for 15 s The unit returns to the operating mode if no button is pressed for 15 s after acknowledgement of the new parameter value 18 Change from menu level 1 to menu level 2 gt Press Mode Enter until EF is displayed eee ModeFnter Set gt Press Set briefly gt The first parameter of the sub menu is displayed here dr1 e Locking unlocking UK The unit can be locked electronically to prevent unintentional settings gt Make sure that the unit is in the normal operating mode Vore Coc Coe gt Press Mode Enter Set for 10 s Vora A gt Loc is displayed y 10s During operation gt Loc is briefly displayed if you try to change parameter values For unlocking gt Press Mode Enter Set for 10 s onpm D gt uLoc is displayed Cae s On delivery unlocked Timeout If no button is pressed for 15 s during parameter setting the unit returns to the operat ing mode with unchanged values 10 2 Entering of the probe length unit on delivery On delivery of the unit you must first enter the probe length The complete param eter setting menu cannot be accessed before this gt Ensure that the correct probe length is entered In particular it has to be considered Is the measurement of the probe length correct lower edge of the proc ess connection to the probe end chapter 6 3 Does the unit of the measurement cm inch correspond
17. o The unit complies with the standard EN 61000 6 4 and is a class A product The radiated energy of the microvvaves 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 e Improper or non intended use may lead to malfunctions of the unit or to unwanted 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 3 Items supplied e Level sensor LR7000 with G process connection or level sensor LR7300 with 74 NPT process connection In addition the following is necessary for installation and operation Probe Mounting material The following components are available as accessories Probe L 24 em 9 5 NON canada AA O A SA order no Probe L 45 cm 17 7 WC Messccciiancrviwssinssanaveasinersaveainivativeatanestanstiaoenvvoedivessnas order no Probe L 70 cm 270 MON cacko AE EGO RL order no Probe L 100 cm 39 4 inch ue eseese osusza aaa iaia order no Probe L 120 cm 47 2 I Cha aaa zakon AWA A order no Probe L 140 cm 25 NIKO nata ROGER A AO AGARZE order no Probe L 160 cm 63 0 inch e
18. ow rP1 output 1 switches until liquid is refilled If SP1 is reached again output 1 switches off e f the level is below rP2 or above SP2 or if there is a wire break output 2 switches OFF alarm The logical operation between the outputs 1 and 2 indicates whether there is overflow or the actual level is below the minimum level Overflow output 1 and output 2 switched off Below min value output 1 switched on and output 2 switched off 31 16 Factory setting Factory setting 5090 SPmax 50 rPmax 100 SPmax 100 rPmax SPmax LEnG value in cm minus 4 LEnG value in inch minus 1 6 rPmax LEnG value in cm minus 4 5 LEnG value in inch minus 1 8 When the LEnG value is entered the program calculates the basic setting Technical data and further information at www ifm com Select your country Data sheet direct 32
19. programming buttons L probe length A active zone 1 inactive zone 1 2 inactive zone 2 26 13 Technical data Operating voltage VI Current rating mA Short circuit protection pulsed reverse polarity overload protection Voltage drop V Current consumption mA Switch point accuracy CIN ccccssesesssssssssseesssersesesseeesesesseesseeeten 1 5 0 5 A REDESIADIMO CM ksimi aeni naa R DENA nE iari t05 Max speed of the level change mm s Dielectric constant medium Max tank pressure bar Housing materials Materials wetted parts Seal LR7000 Protection Operating temperature C cccccccccsssssssscssessesseecsssecsssesesecsesesesscsesesessesesassesesasaees 0 60 Medum temperature TC heesaeiinmst ttmmmsmntsssmesmmsmeomnsmsdt 0 80 Storage temperature C Shock resistance g 12 DIN EN 60068 2 29 11 ms Vibration resistance g csssssessssessssssssssscsserssssesesssersaseeseeas 2 9 RMS 1 1000 Hz IEC 60947 1 A active zone gt scale drawing 13 1 Setting ranges LEnG Setting range Step increment OFS Setting range Step increment 27 The setting ranges for set points SPx and reset points rPx depend on the probe length L In general the following applies Se IE Siti 1 min max min max sM L 4 5 os 18 The values apply if OFS e rPx is always smaller than If the value for SPx is reduced to a value lt r
20. rolled 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 OUT1 going out and output 1 switching off 29 15 2 Pumping station empty the tank with overflow protection Switching output 1 control to empty tank upper value exceeded submersible pump ON P1 ower 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 hysteresis function normally closed Hnc XX X display value A empty B overflow protection e If SP1 is exceeded output 1 switches submersible pump ON When the level is below rP1 again the output switches off submersible pump OFF If SP2 is exceeded or if there is a wire break output 2 switches off 30 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 OU1 hysteresis function normally closed Hnc Switching output 2 safety function min max max value exceeded alarm EZM below min value alarm 0U2 window function normally open Fno XX X display value A refill B min monitoring C max monitoring e If the level is bel
21. ssersseseeceseessenseseas order no Probe L 140 cm 55 1 Misses AAA ARA order no Probe L 160 cm 63 0 iNCh en ce ceccesecccsscesccesceesseressesseessesesesaeeereseeennens order no Fixing of the probe KZ NET gt Screw the probe to the unit and tighten Recommended tightening torque 4 Nm For ease of installation and removal the probe connection can be rotated without restriction Even if rotated sev eral times there is no risk of damage to the unit Lmin 15 cm E43203 E43204 E43205 E43207 E43208 E43209 E43210 UK In case of high mechanical stress strong vibration moving viscous media it may be necessary to secure the screw connection e g by a screw retaining com 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 3 Shortening of the probe The probe can be shortened to adapt to different tank heights NOTE Ensure that the probe length is not below the minimum permissible length of 15 cm Lmin Proceed as follows gt Screw the probe to the unit gt Mark the desired length L on the probe The reference point is the lower edge of the process connection gt Remove the probe from the unit gt Shorten the probe gt Remove all burrs and sharp edges gt Screw the probe again to t
22. ternational regulations for the installation of electrical equipment must be adhered to Voltage supply 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 25 gt Disconnect power gt Connect the unit as follows Pin connection 4 OUT1 switching output 1 black Note When operating voltage is applied to the unit for the first time the probe length must be entered Afterwards the unit is in principle operational 10 2 Entering of the probe length unit on delivery 2 OUT2 switching output 2 8 Operating and display elements WO OOOOO 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 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 operating and fault indication indication of the parameters and parameter values 10 Set button setting of the parameter values continuously by keeping the button pressed incremen tally by pressing the button once 11 Mode Enter button selection of the parameters and acknowledgement of the parameter values 16 9 Menu 9 1 Menu structure 9 2 Explanation of the menu SPx rPx Upper lower limit level values OUx
23. the unit for the first time the probe length must be entered Afterwards the unit is in principle operational 10 2 Entering of the probe length unit on delivery e f necessary parameters for the output signals and optimisation of the monitor ing functions can be set 10 4 e All settings can also be carried out before installation of the unit e Reset to the factory settings is possible Electronic lock can be set to prevent unintentional operations Display functions The unit displays the current level selectable in cm or inch Factory setting for LR7000 cm for LR7300 inch The set unit of measurement and the switching status of the outputs are indicated by LEDs Switching functions The unit signals that a set limit level has been reached or that the level is below the limit value via two switching outputs OUT1 OUT2 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 at the requested distance Window function normally open figure 2 OUx Fno Window function normally closed figure 2 OUx Frc The width of the window can be set by means of the difference between SPx and rPx SPx upper value rPx lower value L level HY hysteresis FE window e For eac
24. to the unit of measurement set in the sensor 10 3 1 Malfunctions may occur if the wrong probe length is set gt Apply operating voltage gt Initial display is shown gt Press Mode Enter briefly gt LEnG is displayed 3 4 Press SET and keep it pressed gt nonE flashes for 5 s BBB D After 5 s The initial value is VS CIT vb displayed and changed incremen Ang tally by pressing the button once or continuously by keeping the button pressed The value is incremented continuously For reducing the value let the display move to the maximum setting value Then the cycle starts again at the minimum setting value Note For LR7000 the values are displayed in cm for LR7300 in inch factory setting of the units gt Press Mode Enter briefly gt LEnG is displayed again The new setting value is stored Then the unit changes to the operating mode For further parameter setting the menu can be opened 10 3 You can open LEnG directly like any other parameter It is therefore possible to change the value for the probe length at any time 20 10 3 Basic settings 10 3 1 Selection of the display unit gt Select Uni and set the unit of measurement cm inch Factory setting cm LR7000 inch LR7300 10 3 2 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
Download Pdf Manuals
Related Search