IFM LX Series Operating Instructions Manual
IFM LX Series Operating Instructions Manual

IFM LX Series Operating Instructions Manual

Electronic level sensor
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Operating instructions
UK
Electronic level sensor
LR7020
LXxxxx

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Summary of Contents for IFM LX Series

  • Page 1 Operating instructions Electronic level sensor LR7020 LXxxxx...
  • Page 2: Table Of Contents

    Contents 1 Preliminary note ���������������������������������������������������������������������������������������������������4 1�1 Symbols used ������������������������������������������������������������������������������������������������4 2 Safety instructions �����������������������������������������������������������������������������������������������4 3 Items supplied������������������������������������������������������������������������������������������������������5 4 Getting started �����������������������������������������������������������������������������������������������������5 4�1 Installation, Electrical connection �����������������������������������������������������������������5 4�2 Parameter setting �����������������������������������������������������������������������������������������5 4�3 Example application ��������������������������������������������������������������������������������������5 5 Functions and features ����������������������������������������������������������������������������������������6 5�1 Applications ���������������������������������������������������������������������������������������������������6 5�2 Restriction of the application area �����������������������������������������������������������������7 5�3 Special information on DNV-GL approval ������������������������������������������������������8 6 Function ���������������������������������������������������������������������������������������������������������������8...
  • Page 3 7�3�2 Installation of the coaxial pipe ������������������������������������������������������������17 7�4 Probe length ������������������������������������������������������������������������������������������������18 7�4�1 Shorten the probe �������������������������������������������������������������������������������18 7�4�2 Determine probe length L for single probes����������������������������������������19 7�4�3 Shortening of the coaxial pipe ������������������������������������������������������������19 7�4�4 Determine probe length L for coaxial probes ��������������������������������������19 7�5 Installation of the unit with single probe �������������������������������������������������������20 7�5�1 Installation to G¾...
  • Page 4: Preliminary Note

    1 Preliminary note 1.1 Symbols used ► Instructions > Reaction, result […] Designation of keys, buttons or indications → Cross-reference Important note Non-compliance may result in malfunction or interference� Information Supplementary note� 2 Safety instructions • The device described is a subcomponent for integration into a system� - The manufacturer of the system is responsible for the safety of the system�...
  • Page 5: Items Supplied

    (→ Accessories): • Probe (→ 11.1) • Optional: coaxial pipe (→ 11.2) • Mounting material (→ 11.1) Only use accessories from ifm electronic gmbh!The optimum function is not ensured when using components from other manufacturers� Accessories: www.ifm.com 4 Getting started For the most frequent applications the quick set-up described below is possible�...
  • Page 6: Functions And Features

    5 Functions and features The unit continuously detects the level in tanks� A PC with USB IO-Link master or a correspondingly programmed memory plug or a configured IO-Link environment is required to set the parameters (→ 6.6), (→ 10)� According to the current state of science the operation of the unit can be classified to be harmless to human health�...
  • Page 7: 5�2 Restriction Of The Application Area

    5.2 Restriction of the application area Incorrect measurements / 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)� ►...
  • Page 8: 5�3 Special Information On Dnv-Gl Approval

    5.3 Special information on DNV-GL approval For use under DNV-GL conditions (if device approval is available), observe the following instructions: • Single probes and coaxial probes up to a length of 500 mm can be operated without support� • For probe lengths from 500 mm to 2000 mm, coaxial probes must be used�...
  • Page 9: 6�2 Set-Up Via Io-Link

    6.2 Set-up via IO-Link The device parameters are set via the IO-Link interface (→ 6.6) and (→ 10)� 6.3 Switching function The unit signals via the switching outputs (OUT1 /OUT2) that a set limit has been reached or that the level is below the limit� The switching limits refer to the lower probe end�...
  • Page 10: 6�4 Probes For Different Tank Heights

    The IODDs necessary for the configuration of the unit, detailed information about process data structure, diagnostic information, parameter addresses and the necessary information about required IO-Link hardware and software can be found at www�ifm�com� 7 Installation 7.1 Installation location / environment, operation with a single probe •...
  • Page 11: 7�1�1 Minimum Distances For Installation In Closed Metal Tanks

    • For installation in plastic tanks: (→ 7.5.4) • When operating the unit in small tanks (probe lengths shorter than 200 mm and less than 300 mm distance to the tank wall), mount the unit off-centre (eccentrically) to prevent possible interference from tank resonances� 7.1.1 Minimum distances for installation in closed metal tanks Fig.
  • Page 12: 7�1�2 Installation In Pipes (Bypass Pipe, Still Pipe)

    For installation in connection pieces: Fig. 7-3 If a pipe is used to make the connection piece (Fig� 7-3), it must not protrude into the tank�The installation causes interfering reflections which are not suppressed by the tank adjustment� 7.1.2 Installation in pipes (bypass pipe, still pipe) The internal pipe diameter (d) must at least have the following value: With adjustment(→...
  • Page 13: 7�1�4 Heavy Soiling

    ► For installation according to Fig. 7-6: Reduce parameter [LEnG] by (t) to offset the immersion depth (t) (→ 10.4)� Fig. 7-4 Fig. 7-5 Fig. 7-6 If the probe is fixed at the tank bottom, a low level may already be detected with empty tank�...
  • Page 14: 7�1�6 Heavy Foam Build-Up And Turbulence

    7.1.6 Heavy foam build-up and turbulence Heavy foam build-up and turbulence may lead to incorrect measurements� To prevent this: ► Install the sensor in a steady area� Examples how to create a steady area: • Use coaxial probe� Observe the application area of the coaxial probe (→ 5.2)� •...
  • Page 15: 7�1�7 Notes On Tank Adjustment

    7.1.7 Notes on tank adjustment Tank adjustment (parameter [tREF]) reduces the effect of interference and ensures a higher excess gain in difficult application conditions� Only carry out a tank adjustment with the unit installed and preferably with empty tank� Two options are available for tank adjustment: [Emty] = Adjustment of the complete probe (recommended)�...
  • Page 16: 7�2 Installation Location / Environment, Operation With A

    Only if data storage is required in an IO-Link application: The tank adjustment is not saved via IO-Link� After a replacement it must be carried out again� More information about data storage: (→ 15.1) 7.2 Installation location / environment, operation with a coaxial probe ►...
  • Page 17: 7�3 Installation Of The Probe

    7.3 Installation of the probe The probe is not supplied. It has to be ordered separately (→ 3). 7.3.1 Attaching the probe ► Screw the probe to the unit and tighten� Fig. 7-10 ► Hold the probe at the point of attachment with a second screwdriver to stop it turning (Fig�...
  • Page 18: 7�4 Probe Length

    ► Slide the seal (A) onto the thread of the sensor� ► Slide the coaxial pipe (B) onto the probe� Carefully centre it and carefully move the probe through the centring piece (C) - for lengths > 1400 mm through both centring pieces - of the coaxial pipe�...
  • Page 19: 7�4�2 Determine Probe Length L For Single Probes

    7.4.2 Determine probe length L for single probes ► Precisely measure the probe length L� The reference point is the lower edge of the process connection (Fig� 7-11)� ► Note down L� It is needed for setting the device parameters (→ 10.4)� 7.4.3 Shortening of the coaxial pipe The coaxial pipe and the probe must be of the same length: ►...
  • Page 20: 7�5 Installation Of The Unit With Single Probe

    7.5 Installation of the unit with single probe Before installing and removing the unit: Make sure that no pressure is applied to the system and that there is no medium in the tank that could leak� Also always take into account the potential dangers related to extreme machine and medium temperatures�...
  • Page 21: 7�5�3 Installation In Open Metal Tanks

    ► Install the flange plate with G¾ process connection (→ Accessories) with the flat surface showing to the tank and fix it with appropriate screws� If necessary, a seal (B in Fig� 7-15) can be inserted between flange plate and tank� Some flange plates are supplied with a seal� If this is not the case, use a suitable seal�...
  • Page 22: 7�5�4 Installation In Plastic Tanks

    7.5.4 Installation in plastic tanks 150 mm launching plate (→ Accessories) To enable sufficient transfer of the measured signal, note in case of installation in plastic tanks or metal tanks with plastic lid: ► There must be a hole at least 150 mm in diameter in the plastic lid� ►...
  • Page 23: 7�6 Installation Of The Unit With Coaxial Probe In The Tank

    7.6 Installation of the unit with coaxial probe in the tank ► Seal the process connection: - For pipes with G¾ process connection: slide the supplied seal onto the thread of the coaxial pipe� Lightly grease the thread with a suitable paste� - For pipes with ¾"...
  • Page 24: Electrical Connection

    (→ 10)� Only then is the unit ready for operation� 9 Operating and display elements This unit version has no operating and display elements� For parameter setting (→ 10)� For units with display and operating elements → www.ifm.com.
  • Page 25: Parameter Setting

    10 Parameter setting A PC with USB IO-Link master (→ 10.1), a correspondingly programmed memory plug (→ 10.2) or a configured IO-Link environment (→ 10.3) is required to set the parameters� All parameters except tank adjustment (→ 7.1.7) can be set before installation and set-up of the unit or during operation (→...
  • Page 26: 10�3 Parameter Setting During Operation

    The tank adjustment is not saved by the memory plug and it is not transferred� After replacement of the unit it has to be carried out manually� 10.3 Parameter setting during operation ► Make sure that the sensor is connected to an IO-Link-capable module (master) (→...
  • Page 27 Output configuration for the switching outputs OUT1 or OUT2: [Hno] hysteresis function/NO [Hnc] hysteresis function/NC [Fno] window function/NO [Fnc] window function/NC [OFF] = output OFF (of high impedance) SP_FH1 Set point 1 or 2 / upper limit for window function: SP_FH2 Setting range: 15 (35)...L-30 mm / 0.6 (1.4)...L-1.2 inch Note: The values in brackets apply to the setting [MEdI] = [LOW].
  • Page 28: Operation

    11 Operation 11.1 Operation with single probe The single probe is made up of one individual rod� Operation with a single probe is suited for the detection of aqueous media, in particular of heavily soiled aqueous media� For correct function with single probe, the unit needs a sufficiently large metal launching surface / launching plate�...
  • Page 29: 11�3 Function Check

    [ou1] setting [ou2] setting OFF for [FOU1] = [OFF] OFF for [FOU2] = [OFF] Fault ON for [FOU1] = [On] ON for [FOU2] = [On] 12 Technical data and scale drawing Technical data sheet and scale drawing at www�ifm�com�...
  • Page 30: Maintenance / Transport

    13 Maintenance / transport ► Keep the process connection free of deposits and foreign bodies� 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).
  • Page 31: Factory Setting

    14 Factory setting (special units LXxxxx* are not taken into account) Factory setting User setting LEnG MEdI HIGH Prob tREF Emty tREF FLnG SP_FH1 50 % VMR*) SP_FH2 100 % VMR**) rP_FL1 5 mm below SP _FH1 rP_FL2 5 mm below SP_FH2 FOU1 FOU2 *) Settings of the special units LXxxxx →...
  • Page 32: Notes On Parameter Setting Via Io-Link

    15 Notes on parameter setting via IO-Link On delivery the unit is not operational� During set-up, valid basic settings have to be sent to the device once even if the default settings correspond to the connected device. For parameter setting: (→...
  • Page 33 More information at www�ifm�com...

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Lr7020

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