IFM LK122 Series Operating Instructions Manual Download Page 3

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11�2�3 Set medium [MEdI] ��20

11�2�4 Set overflow prevention [OP] ��20

11�2�5 Adjust the overflow prevention [cOP] ��21

11�3 Setting the output signals for OUT1 ��22

11�3�1 Setting the output function [ou1] ��22

11�3�2 Define switching limits [SP1] / [rp1] (hysteresis function) ��22

11�3�3 Define switching limits [FH1] / [FL1] (window function) ��22

11�3�4 Set switch-on delay [dS1] ��22

11�3�5 Set switch-off delay [dr1]��23

11�3�6 Define switching logic [P-n] ��23

11�3�7 Set response of the output in case of a fault [FOU1] ��23

11�3�8 Configure display [diS] ��23

11�3�9 Reset all parameters to factory setting [rES] ��23

11�4 Changing the password [CodE] ��24

11�5 Enter password [KEy�C] ��24

12 Operation ��24

12�1 Operation indication ��25

12�2 Read the set parameters ��25

12�3 Error indications ��26

12�4 Output response in different operating states ��27

13 Technical data ��27

13�1 Setting values [OFS] ��27

13�2 Setting values [OP] ��28

13�3 Calculation aids [OP] ��29

13�3�1 Definition "from the cover“ ��29

13�3�2 Definition "from the bottom" ��30

13�4 Setting ranges [SP1] / [FH1] and [rP1] / [FL1] ��30

14 Maintenance/cleaning/change of medium ��31
15 Factory setting ��31

Summary of Contents for LK122 Series

Page 1: ...Operating instructions Electronic level sensor LK122x 80260475 00 01 2017 UK ...

Page 2: ...ay and switching functions 10 6 2 3 Offset for indicating the real level in the tank 11 6 2 4 Defined state in case of a fault 11 6 2 5 IO Link function 11 6 3 Password protection against inadvertent manipulation 12 7 Installation 12 7 1 Other installation notes 14 7 1 1 Marking of the installation height 14 8 Electrical connection 15 9 Operating and display elements 16 10 Menu 17 10 1 Menu struct...

Page 3: ...esponse of the output in case of a fault FOU1 23 11 3 8 Configure display diS 23 11 3 9 Reset all parameters to factory setting rES 23 11 4 Changing the password CodE 24 11 5 Enter password KEy C 24 12 Operation 24 12 1 Operation indication 25 12 2 Read the set parameters 25 12 3 Error indications 26 12 4 Output response in different operating states 27 13 Technical data 27 13 1 Setting values OFS...

Page 4: ...nd environ mental conditions without any restrictions Only use the product for its intended purpose Functions and features Only use the product for permissible media Technical data If the operating instructions or the technical data are not adhered to personal injury and or damage to property can occur The manufacturer assumes no liability or warranty for any consequences caused by tampering with ...

Page 5: ...t ifm electronic Only use accessories from ifm electronic Accessories www ifm com The optimum function is not ensured when using components from other manufacturers 4 Functions and features 4 1 Applications The unit was especially designed to meet the requirements of machine tool building It is particularly suitable for monitoring coolant emulsions also dirty as well as cutting and hydraulic oils ...

Page 6: ...ivity is detected as level Check proper function by an application test For water based media with temperatures 35 C install the unit in a climatic tube accessories Check proper function by an application test When used as overflow prevention according to the German Federal Water Act WHG no climatic tube must be used 5 Getting started For fast set up the example configuration described in the foll...

Page 7: ...rameter setting sequence MEdI OIL 2 11 2 3 OFS u e g u 2 0 cm 6 2 3 OP Set the overflow prevention OP at a dis tance y greater than 4 5 cm below the mounting element For distances y smaller than 4 5 cm there may be malfunctioning and error messages during the adjustment process cOP Fig 5 1 OP c Step increment and setting range 13 2 Calculation aids for OP 13 3 Adjust overflow prevention OP to cOP ...

Page 8: ...c constant of a medium is important for its detection Media with a high dielectric constant e g water generate a strong measurement signal media with a low dielectric constant e g oils a correspondingly lower signal The active measurement zone of the sensor probe is composed of 16 capacitive measuring segments They generate measurement signals depending on the degree of coverage Fig 6 1 A I I E I ...

Page 9: ...r OP OP overflow prevention one of the upper measuring segments is defined as integrated overflow prevention OP The overflow prevention OP is the maximum limit of the measuring range The switch point SP1 FH1 is always below OP The overflow prevention OP is assigned to the output OUT OP Typically the overflow prevention OP reacts when the selected measuring segment has been reached a few mm before ...

Page 10: ...tput functions are available for the switching output OUT1 Hysteresis function normally open fig 6 2 ou1 Hno Hysteresis function normally closed fig 6 2 ou1 Hnc First the switch point SP1 is set then the switch off point rP1 with the requested difference Window function normally open fig 6 3 ou1 Fno Window function normally closed fig 6 3 ou1 Fnc The width of the window can be set by means of the ...

Page 11: ... state For this case the response of the output OUT1 can be set via the parameter FOU1 11 3 7 The response of the output OUT OP overflow prevention is fixed it opens in case of a fault 6 2 5 IO Link function This unit has an IO Link communication interface which enables direct access to process and diagnostic data In addition it is possible to set the parameters of the unit while it is in operatio...

Page 12: ... L M c Probe length Zone for mounting elements Maximum outside length u y OP B Minimum distances Overflow prevention Metal object inside the tank Table 7 1 LK1222 LK1223 LK1224 cm inch cm inch cm inch L probe length 26 4 10 4 47 2 18 6 72 8 28 7 M mounting zone 14 0 5 5 23 0 9 1 36 0 14 2 c max outside length Applies to installation as shown wall thickness of the tank lid was neglected mounting el...

Page 13: ... prevention OP must 1 be below the mounting element and 2 be set at a minimum distance y to it The minimum distance is measured between the lower edge of the mounting element and the OP value Table 7 2 MEdI CLW 1 MEdI CLW 2 OIL 1 MEdI OIL 2 cm inch cm inch cm inch x 2 0 0 8 3 0 1 2 4 0 1 6 u 1 0 0 4 1 0 0 4 1 0 0 4 y LK1222 2 5 1 0 3 5 1 4 4 5 1 8 y LK1223 4 5 1 8 5 5 2 2 6 5 2 6 y LK1224 6 0 2 4 ...

Page 14: ... 1 6 6 0 2 4 10 0 4 0 7 1 1 Marking of the installation height Fix the set installation height with the supplied stainless steel tube clip If the sensor is removed from the fixture for main tenance reasons the clip serves as a limit stop when remounting the sensor Thus an inadvertent maladjustment of the sensor is excluded This is in particular necessary for the correct function of the overflow pr...

Page 15: ...ention Colours to DIN EN 60947 5 2 Example circuits 2 x positive switching 2 x negative switching L L 3 4 2 1 BU BK WH BN 2 OUT OP 4 OUT1 L 3 4 2 1 BU BK WH BN 2 OUT OP 4 OUT1 L For safe function the sensor housing must be electrically connected to the counter electrode grounding For this use the housing connection see drawing and a short piece of cable with a core cross section of at least 1 5 mm...

Page 16: ...hed LED off Tank is full overflow prevention point OP is reached LED 8 Switching status OUT1 on when the output is switched 9 Mode Enter button Selection of the parameters and acknowledgement of the parameter values 10 Set button Setting of the parameter values continuously by holding pressed incrementally by pressing once 11 Alphanumeric display 4 digits Indication of the current level Display of...

Page 17: ... cOP S S M CodE EF donE S M nonE M S M M SP1 S M M S 10 0 rP1 9 5 S M 8 0 M rES S M M M M M M M M S ou1 Hno 0 0 dS1 dr1 uni cm S S S M 0 0 M M P n PnP S M M FOU1 diS M M OFS 0 S S S OFF On M M Menu item only visible at factory setting 15 Menu item only visible if certain parameters have been selected ...

Page 18: ...Enter until the required parameter is displayed To select parameters in the extended menu menu level 2 Select EF and briefly press Set 2 Mode Enter Set Press and hold Set The current parameter value flashes for 5 s Value is increased step by step by pressing the button once or continuously by keeping the button pressed 3 Mode Enter Set Briefly press Mode Enter confirmation The parameter is display...

Page 19: ...efore or after installation Exception To adjust the overflow prevention cOP the unit must be installed in the tank 11 2 Basic settings Setting ranges of all parameters 13 Factory settings of all parameters 15 11 2 1 Set unit of measurement uni Enter uni before entering the values for SPx rPx OP or OFS This avoids unintentional wrong settings Select uni Determine unit of measurement cm inch uni 11 ...

Page 20: ...s Check proper function by an application test The settings CLW 1 and CLW 2 suppress deposits e g metal swarf The settings OIL 1 and OIL 2 suppress a bottom layer of higher dielectric water or swarf which is a few cm high If no oil layer is present or if it is very thin the bottom layer is detected 11 2 4 Set overflow prevention OP Comply with minimum distances and installation instructions Select...

Page 21: ...uccessful FAIL is displayed Possibly lower the level or correct the position of the overflow prevention OP and repeat the adjustment operation cOP Minimum distance between the overflow prevention OP and the level during adjustment Table 11 1 cm inch LK1222 2 0 0 8 LK1223 3 5 1 4 LK1224 5 0 2 0 The position of the overflow prevention OP can be determined by calling up the parameter OP Note the offs...

Page 22: ...e at which the output switches off rP1 rP1 is always lower than SP1 The unit only accepts values which are lower than the value for SP1 If SP1 is shifted rP1 also shifts provided that the lower end of the setting range is not reached 11 3 3 Define switching limits FH1 FL1 window function Make sure that for ou1 the function Fno or Fnc is set First set FH1 then FL1 Select FH1 and set the upper limit...

Page 23: ... Output switches OFF in case of a fault A fault is for example defective hardware or signal quality too low Overflow is not considered to be a fault 12 3 11 3 8 Configure display diS Select diS and set the value diS On The display is switched on in the operating mode Update of the measured values every 500 ms OFF The display is switched off in the operating mode When one of the buttons is pressed ...

Page 24: ...the value nonE to do so a full cycle of all values is necessary CodE 11 5 Enter password KEy C Only visible if the password protection is activated The parameter is displayed immediately after opening the user menu Select KEy C and enter the correct password When the correct password is entered there is full write and read access to all operating parameters of the unit When a wrong password is ent...

Page 25: ...ion OP necessary Loc Unit locked via operating keys parameter setting not possible For unlocking press the two setting buttons for 10 s uLoc Unit is unlocked parameter setting is possible again C Loc The unit is temporarily locked parameter setting via IO Link is active temporary locking S Loc Unit is permanently locked via software This locking can only be removed with a parameter setting softwar...

Page 26: ...iled Minimum distances too short Mounting element detected below the overflow prevention Measured value not constant Enter a valid password In case of adjustment errors Lower the level if possible Clean the probe Observe the notes on installation Correct the position of the overflow prevention OP Repeat the adjustment SC1 LED 8 Flashing Short circuit in switching output OUT1 Remove the short circu...

Page 27: ...sted normal operation According to the level and ou1 setting ON Fault OFF for FOU1 OFF ON for FOU1 On OFF Overflow prevention point reached According to the level and ou1 setting OFF 13 Technical data Technical data and scale drawing at www ifm com 13 1 Setting values OFS Table 13 1 cm inch Setting range 0 200 0 0 78 8 LK1222 LK1223 LK1224 LK1222 LK1223 LK1224 Step increment 0 5 1 0 2 0 5 ...

Page 28: ... 4 13 1 50 19 5 15 5 6 1 31 0 12 2 46 18 1 14 3 5 6 28 5 11 2 42 16 7 13 0 5 1 26 1 10 3 39 15 2 11 8 4 7 23 6 9 3 35 13 8 10 6 4 2 21 2 8 3 31 12 3 9 4 3 7 18 8 7 4 28 10 9 8 2 3 2 16 3 6 4 24 9 5 6 9 2 7 13 9 5 5 20 8 0 OPx Setting range OP The indicated values for OP refer to the lower edge of the probe The values apply if OFS 0 If OFS 0 they increase by the set offset value ...

Page 29: ...um 7 maximum 13 2 L Probe length u Distance between probe and tank bottom z Required response level OP from the bottom maximum z L c y or z B y 13 3 1 Definition from the cover Required distance y of the overflow prevention OP from the cover is defined Without offset OFS 0 OP L c y With offset OFS u OP L c y u or OP B y Example c 3 0 cm y 5 0 cm u 1 0 cm Without offset OP 26 4 cm 3 0 cm 5 0 cm 18 ...

Page 30: ...offset OP 18 0 cm Round the calculated value to the next lower adjustable value 13 2 13 4 Setting ranges SP1 FH1 and rP1 FL1 Table 13 3 LK1222 LK1223 LK1224 cm inch cm inch cm inch SP1 FH1 2 5 20 0 1 0 7 8 3 5 39 0 1 4 15 4 6 59 2 5 23 5 rP1 FL1 2 0 19 5 0 8 7 6 3 0 38 5 1 2 15 2 5 58 2 0 23 0 Step increment 0 5 0 2 0 5 0 2 1 0 5 The indicated values refer to the lower edge of the probe The values...

Page 31: ... out maintenance Install sensor exactly in the same position as before Otherwise check the parameter OP and carry out cOP once again After a change of the medium with considerably differing dielectric constants e g oil and water Adapt parameter MEdI 11 2 3 15 Factory setting Factory setting User settings LK1222 LK1223 LK1224 SP1 10 0 19 5 29 rP1 9 5 19 0 28 OP 20 4 40 7 61 MEdI CLW 1 cOP CodE nonE...

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