IFM LR7009 Operating Instructions Manual
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IFM LR7009 Operating Instructions Manual

Electronic level sensor
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Operating instructions
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Electronic level sensor
LR7009

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Summary of Contents for IFM LR7009

  • Page 1 Operating instructions Electronic level sensor LR7009...

  • Page 2: Table Of Contents

    LR7009 Electronic level sensor Contents Preliminary note .............
  • Page 3 Electronic level sensor LR7009 Resetting all parameters to factory setting ........28 Changing basic settings .

  • Page 4: Preliminary Note

    LR7009 Electronic level sensor 1 Preliminary note You will find instructions, technical data, approvals and further information using the QR code on the unit / packaging or at www.ifm.com. 1.1 Symbols used Requirement Instructions Reaction, result [...] Designation of keys, buttons or indications...

  • Page 5: Safety Instructions

    Electronic level sensor LR7009 2 Safety instructions • The unit described is a subcomponent for integration into a system. – The system architect is responsible for the safety of the system. – The system architect undertakes to perform a risk assessment and to create documentation in accordance with legal and normative requirements to be provided to the operator and user of the system.

  • Page 6: Intended Use

    • Mounting material (if necessary, a launching plate) Ò Accessories. • 3.1 Accessories Only use accessories from ifm electronic gmbh. The function is not ensured when using components from other manufacturers. The following components are available as accessories: Rods Length (cm)

  • Page 7: Operation With Single Probe

    Electronic level sensor LR7009 Coaxial pipes with ¾“ NPT process connection Length (cm) Order number E43218 E43219 E43220 E43223 E43224 E43221 Flange plates Size / process connection Order number 73 - 90 / G¾ E43201 65 - 80 / G¾...

  • Page 8: Restriction Of The Application Area

    LR7009 Electronic level sensor 3.4.1 Restriction of the application area 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.

  • Page 9: Function

    The IODDs necessary for the configuration of the unit, detailed information about process data structure, diagnostic information, parameter addresses and the necessary information about the required IO-Link hardware and software can be found at www.ifm.com. 4.1 Measuring principle The device operates on the principle of guided wave radar. It measures the level using electromagnetic pulses in the nanosecond range.

  • Page 10: Offset For Indicating The Real Level In The Tank

    LR7009 Electronic level sensor • Hysteresis function / normally closed (Fig. Window function): [OUx] = [Hnc]. First the switch point (SPx) is set, then the switch-off point (rPx) with the requested difference. • Window function / normally open (Fig. Hysteresis function): [OUx] = [Fno].

  • Page 11: Installation

    Electronic level sensor LR7009 5 Installation Vertical installation from the top is preferred. 5.1 Device with single probe For a safe function, the device requires a launching plate. The following minimum distances between the rod and tank walls, objects in the tank (B), tank bottom...
  • Page 12 LR7009 Electronic level sensor Fig. 5: Installation on a pipe Fig. 6: Installation in a boss Although the device can be installed in a boss: installation in a flat tank lid is recommended, as a boss will impede the distribution of the microwaves.

  • Page 13: Device With Coaxial Probe

    Electronic level sensor LR7009 Min. diameter bypass and still pipe Upper access to the steady area Upper access to the steady area Lower access to the steady area Lower access to the steady area 5.2 Device with coaxial probe • No minimum distances to the tank wall and structures in the tank (B) are required.

  • Page 14: Installation Of The Coaxial Pipe

    LR7009 Electronic level sensor Substances such as screw retaining compounds may migrate into the medium. u 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.

  • Page 15: Determination Of The Probe Length L When Coaxial Probes Are Used

    Electronic level sensor LR7009 u Remove the fastening bracket and the centring piece (A, B). u Shorten the coaxial pipe to the requested length: L = L + 9 mm. u After shortening, at least one hole (C) for insertion of the fixing bracket has to be left.

  • Page 16: Installation In Closed Metal Tanks (With Flange Plate)

    LR7009 Electronic level sensor u Avoid non-flush installation. u If necessary, use seals or washers (D) to reach the required height. u For tanks with thick walls arrange for sufficiently deep recesses to ensure flush installation. 5.5.2 Installation in closed metal tanks (with flange plate) Flange plates are not supplied.

  • Page 17: Installation In Open Tanks

    Electronic level sensor LR7009 5.5.3 Installation in open tanks u For installation in open tanks, use a metal fixture to install the device. It serves as a launching plate (R); minimum size: 150 x 150 mm for a square fixture, 150 mm diameter for a circular fixture: (Ò...

  • Page 18: Alignment Of The Sensor Housing

    LR7009 Electronic level sensor • For pipes with ¾" NPT process connection: apply a suitable sealing material (e.g. Teflon tape). u Screw the device with the coaxial pipe into the tank and tighten it. 5.7 Alignment of the sensor housing After installation, the sensor housing can be aligned. It can be rotated without restriction. Even if...

  • Page 19: Electrical Connection

    Electronic level sensor LR7009 6 Electrical connection The device must be connected by a qualified electrician. The national and international regulations for the installation of electrical equipment must be adhered to. Supply voltage SELV, PELV according to the technical data sheet.

  • Page 20: Operating Elements And Display Elements

    LR7009 Electronic level sensor 7 Operating elements and display elements Mode/Enter 1 to 8: Indicator LEDs LED 1 green = indication of the level in cm. LED 2 not used. LED 3 green = indication of the level in % of the final value of the measuring range.

  • Page 21: Menu

    Electronic level sensor LR7009 8 Menu 8.1 Menu structure ---- 10,0 FOU1 FOU2 20,0 19,5 SELd 24.0 LEnG MEdI HIGH Prob COAX 8.2 Explanation of the menu SP1/rP1 Upper / lower limit value for the level at which OUT1 switches. FH1/FL1 Upper / lower limit for the acceptable range (monitored by OUT1).
  • Page 22 LR7009 Electronic level sensor SELd Type of indication. LEnG Probe length. MEdI Medium to be detected. Prob Type of probe used (single probe or coaxial probe). The menu item is only active if MEdI = HIGH.

  • Page 23: Parameter Setting

    Electronic level sensor LR7009 9 Parameter setting The parameters can be set via the buttons on the device or the IO-Link interface. During parameter setting the device remains in the operating mode internally. It continues its monitoring functions with the existing parameters until the parameter setting has been completed.
  • Page 24 LR7009 Electronic level sensor w The numerical values are incremented continuously. For reducing the value: u Let the display move to the maximum setting value. Then the cycle starts again at the minimum setting value. 3: Acknowledge parameter value u Briefly press [Mode/Enter].

  • Page 25: Basic Settings (On Delivery)

    Electronic level sensor LR7009 u Make sure that the device is in normal operating mode. u Press [Mode/Enter] + [Set] simultaneously for 10 s. w [Loc] is displayed. [Loc] is briefly displayed if you try to change parameter values. Unlocking: uLoc u Press [Mode/Enter] + [Set] simultaneously for 10 s.

  • Page 26: Setting To The Medium

    LR7009 Electronic level sensor 9.3.2 Setting to the medium u Select [MEdI], press [Set] for 5 s. [MEdI] w [nonE] is displayed. u Set the requested value: • [HIGH] for water and water-based media. • [LOW] for oils and oil-based media.

  • Page 27: Configuring The Display

    Electronic level sensor LR7009 9.5 Configuring the display u Select [SELd] and set type of indication: [SELd] • [L] = The level is indicated in cm. • [L%] = The level is indicated in percent of the final value of the measuring range.

  • Page 28: Setting The Switching Logic For The Outputs

    LR7009 Electronic level sensor 9.7.5 Setting the switching logic for the outputs u Select [P-n] and set [PnP] or [nPn]. [P-n] 9.7.6 Setting response of the outputs in case of a fault u Select [FOU1] / [FOU2] and set the value: [FOU1] •...

  • Page 29: Changing The Value Of The Type Of Probe Used

    Electronic level sensor LR7009 9.9.3 Changing the value of the type of probe used u Select [Prob] and set the value: [Prob] • [rod] for single probe. • [COAX] for coaxial probe. The detection of water and water-based media is possible with the single probe as well as with the co- axial probe.

  • Page 30: Operation

    LR7009 Electronic level sensor 10 Operation After power-on and expiry of the power-on delay time of approx. 0.5 s the unit is in the RUN mode (= normal operating mode). It carries out its measurement and evaluation functions and generates output signals according to the set parameters.

  • Page 31: Output Response In Different Operating States

    Electronic level sensor LR7009 Indication Possible cause Recommended actions [E.033] Rod or process connection soiled. Clean the rod and the process connection, then carry out a reset.* Installation conditions were not adhered to. Observe the notes in "Installation". Probe length, type of probe or sensitivity (setting to Correct the settings, then carry out a reset.*...

  • Page 32: Repair, Maintenance And Disposal

    LR7009 Electronic level sensor 11 Repair, maintenance and disposal u After use dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations. u For transport only use appropriate packaging to avoid damage of the unit.

  • Page 33: Applications

    Electronic level sensor LR7009 12 Applications 12.1 Minimum level monitoring with early warning and alarm Switching output 1: early warning slightly above rP1 (to suppress wave movements) below preset level Ò early warning, start refilling hysteresis function, normally closed (Hnc) Switching output 2: alarm min.

  • Page 34: Storage Tank

    LR7009 Electronic level sensor XX.X: display value emptying overflow prevention • If SP1 is exceeded, output 1 switches (submersible pump ON). If the level is below rP1, output 1 is reset (submersible pump OFF). • If SP2 is exceeded or if there is a wire break, output 2 is reset (OFF).
  • Page 35 Electronic level sensor LR7009 – Overflow: output 1 and output 2 reset (OFF). – Below min. value: output 1 switched (ON) and output 2 reset (OFF).

  • Page 36: Factory Setting

    LR7009 Electronic level sensor 13 Factory setting Factory setting User settings SP1 / FH1 50% SP/FHmax rP1 / FL1 50% rP/FLmax SP2 / FH2 100% SP/FHmax rP2 / FL2 100% rP/FLmax FOU1 FOU2 SELd LEnG nonE MEdI nonE Prob nonE SP/FHmax = LEnG value minus 3.

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