IFM LW2120 Operating Instructions Manual Download | Manualshive

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Operating instructions

Electronic level sensor

LW2120

11478388 / 00 09 / 2022

GB

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Summary of Contents for LW2120

Page 1: ...Operating instructions Electronic level sensor LW2120 11478388 00 09 2022 GB...

Page 2: ...5 6 2 Mount the antenna extension 16 5 7 Electrical connection 17 6 Parameter setting 18 6 1 Parameter setting via PC and IO Link master 18 6 2 Parameter setting during operation 18 6 3 Parameter set...

Page 3: ...Electronic level sensor LW2120 3 10 Factory setting 36 11 Appendix 37 11 1 Approvals and certificates 37...

Page 4: ...the unit packaging or at www ifm com 1 1 Symbols used Requirement Instructions Reaction result Designation of keys buttons or indications Cross reference Important note Non compliance may result in ma...

Page 5: ...he product or incorrect use by the operator Installation electrical connection set up operation and maintenance of the product must be carried out by qualified personnel authorised by the machine oper...

Page 6: ...arable damping material In addition the following is necessary for installation and operation Mounting material Accessories Only use accessories from ifm electronic gmbh The optimum function is not en...

Page 7: ...constant 8 u Check the function by performing an application test Note the influence of conical heaps and similar effects u The unit may only be installed in accordance with the applicable national an...

Page 8: ...gnal beam beam angle 8 without the antenna extension 10 This extends the range of possible applications and enables installation even in small tanks and confined spaces e g in tanks with agitators hea...

Page 9: ...ard General information on IO Link at io link ifm Input Output Device Description IODD with all parameters process data and detailed descriptions of the device at documentation ifm com IO Link offers...

Page 10: ...ing switching functions can be selected hysteresis function normally open or normally closed Fig Single point mode and fig Two point mode window function normally open or normally closed Fig Window fu...

Page 11: ...utputs a switch on and switch off delay of max 60 s can be set e g for especially long pump cycles The switch on delay always refers to the limit value the switch off delay always refers to the hyster...

Page 12: ...l e g turbulence wave movements the output response can be damped During damping the determined level values are smoothed by means of a mean filter the result is a steady curve Damping can be set by m...

Page 13: ...temperatures u Before installation observe the following mounting specifications 5 1 Mounting position The unit may only be installed in accordance with the applicable national and international radio...

Page 14: ...M12 connector optimum angle between connector and tank wall 45 When the housing is rotated the direction of polarisation changes and hence the influence of the false echo on the measured value u Pleas...

Page 15: ...mounting area of the bracket loosen the fixing screws of the bracket u Align the device mounting area of the bracket parallel to the surface of the medium u Hand tighten the fixing screws of the mount...

Page 16: ...ion u Spread an adequate amount of lubricating paste on the unit thread The lubricating paste must be approved for the application and compatible with the elastomers used 36 mm u Insert the unit throu...

Page 17: ...the unit as follows For marine applications if approval available for the device additional surge protection is required L 1 BN 2 WH 4 BK 3 BU OUT1 OUT2 L 4 3 2 1 Pin Core colour 1 BN Brown 2 WH Whit...

Page 18: ...settings are restored When the medium is changed it may also be necessary to adapt the device settings 6 1 Parameter setting via PC and IO Link master u Prepare the PC software and master Operating i...

Page 19: ...4 Adjustable parameters Parameters marked with in the Access column e g SSC1 Param SP2 are only active after selection of the assigned parameters The abbreviations SSC1 and SSC2 below refer to the swi...

Page 20: ...for OUT2 dS1 Setting range 0 60 s Switching delay for SSC1 switching channel 1 The switching delay behaves according to VD MA dr1 Setting range 0 60 s Switch off delay for SSC1 switching channel 1 Th...

Page 21: ...only visible when analogue output is selected ou2 I FOU2 On analogue output switches to a value 21 mA in alarm mode Switching output switches ON in alarm mode OFF analogue output switches to a val ue...

Page 22: ...ero point and tank bottom D can be entered as Tank offset In the vast majority of cases entering the reference height will be sufficient In some cases however it may be advantageous to additionally se...

Page 23: ...entered correctly Upper blind zone detection threshold A C E m 0 mV 0 5 1 0 1 5 2 0 2 5 3 0 0 150 300 450 600 750 900 D B Fig 17 Upper blind zone detection threshold A upper blind zone B disturbing e...

Page 24: ...et to factory settings w This serves to avoid incorrect settings and establish a defined start situation u Set the unit parameter uni m u Set the tank height parameter Reference height 8 000 m w The t...

Page 25: ...Electronic level sensor LW2120 25 u Configure analogue output Use ASP2 and AEP2 u Configure switching output OUT1 Use SSC1 parameter...

Page 26: ...signal strength of the radar echoes It is recommended to check the detection quality under real operating conditions otherwise the expected influences should be taken into account when determining the...

Page 27: ...not desired stop the simulation mode If the condition persists restart the device Device temperature over run Electronics temperature out of limits Verify ambient temperature is within the operating r...

Page 28: ...tank geometry configuration Recommended actions Verify the tank geometry parameters are configured correctly especially the reference height Analyse the echo peaks and check the detection threshold Re...

Page 29: ...y analysing the echo peaks Measured value gets stuck with decreasing level and full tank A B C D A level B time C actual level D measured level 15 Possible cause Disturbing object near the antenna Rec...

Page 30: ...tting of the upper blind zone Reduce the maximum permissible level e g by adjusting the switch points 8 1 4 Measured value fluctuates A B C A level B time C actual level Possible cause Excessive foami...

Page 31: ...a suppressed false echo Recommended actions If possible remove the disturbing object or change the device position 8 1 6 Lagging of measured value during rapid level changes A B C D A level B time C...

Page 32: ...set correctly Recommended actions Correct parameter AEP2 8 1 8 Incorrect measured value when level is above 50 A B C D A level B time C actual level D measured level Possible cause Strong multiple ref...

Page 33: ...asurement is lost in an empty tank A B F C D E A level B time C actual level D measured level E level measurement lost F manway door open Possible cause When the manway door is opened inward it genera...

Page 34: ...tank bottom the device enters the alert mode A B C D Fig 18 A level B time C actual level D measured level Possible cause Radar signal is scattered to the side by the sloped tank bottom Recommended ac...

Page 35: ...eposits in the long run u Ensure that the connection point between unit and adapter is not soiled or damaged during the cleaning process Check sealing ring s for damage If sealing rings are damaged u...

Page 36: ...PnP out1 out2 SSC1 I 4 20 mA dS1 dS2 0 s dr1 dr2 0 s SSCx Param SP1 0 2 m SSCx Param SP2 0 s SSC Confic Logic no SSC Confic Mode Single point SSC Confic Hysteresis 0 05 m ASP2 0 m AEP2 0 2 m FOU2 OFF...

Page 37: ...level sensor LW2120 37 11 Appendix 11 1 Approvals and certificates The EU declaration of conformity approvals and country specific certificates are available at www ifm com Approval related notes Pac...

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