IFM LR2350 Operating Instructions Manual
IFM LR2350 Operating Instructions Manual

IFM LR2350 Operating Instructions Manual

Electronic level sensor
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Operating instructions
UK
Electronic level sensor
LR2350

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  • Page 1 Operating instructions Electronic level sensor LR2350...
  • Page 2: Table Of Contents

    Contents 1 Preliminary note ���������������������������������������������������������������������������������������������������5 1�1 Symbols used ������������������������������������������������������������������������������������������������5 2 Safety instructions �����������������������������������������������������������������������������������������������5 3 Items supplied������������������������������������������������������������������������������������������������������6 4 Getting started �����������������������������������������������������������������������������������������������������6 5 Functions and features ����������������������������������������������������������������������������������������7 5�1 Applications ���������������������������������������������������������������������������������������������������7 5�2 Restriction of the application area �����������������������������������������������������������������7 6 Function ���������������������������������������������������������������������������������������������������������������8 6�1 Measuring principle ���������������������������������������������������������������������������������������8 6�2 Outputs ����������������������������������������������������������������������������������������������������������9 6�3 Other features of the unit �������������������������������������������������������������������������������9 6�3�1 Display functions ����������������������������������������������������������������������������������9...
  • Page 3 7�4 Installation of the unit �����������������������������������������������������������������������������������21 7�4�1 Installation to 3/4 NPT process connection directly in the tank lid ������21 7�4�2 Installation in the tank lid using a 3/4 NPT flange plate ���������������������22 7�4�3 Installation in open metal tanks ����������������������������������������������������������23 7�4�4 Installation in plastic tanks ������������������������������������������������������������������24 7�5 Alignment of the sensor housing �����������������������������������������������������������������25 8 Electrical connection ������������������������������������������������������������������������������������������26 9 Operating and display elements ������������������������������������������������������������������������27...
  • Page 4 11�6 Change basic settings ��������������������������������������������������������������������������������38 11�6�1 Re-enter probe length �����������������������������������������������������������������������38 11�6�2 Set to another medium ���������������������������������������������������������������������38 11�7 Simulation ��������������������������������������������������������������������������������������������������39 11�7�1 Set simulation value ��������������������������������������������������������������������������39 11�7�2 Set simulation time ���������������������������������������������������������������������������39 11�7�3 Switch simulation on / off ������������������������������������������������������������������39 12 Operation ���������������������������������������������������������������������������������������������������������40 12�1 Single probe ����������������������������������������������������������������������������������������������40 12�2 Function check ������������������������������������������������������������������������������������������40 12�3 Operation indication �����������������������������������������������������������������������������������41 12�4 Read the set parameters ���������������������������������������������������������������������������41...
  • Page 5: 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 system architect is responsible for the safety of the system�...
  • Page 6: Items Supplied

    (→ Accessories): • 1 probe (→ 12.1) • mounting material (if necessary, a launching plate (→ 12.1)) ► In the event of incomplete or damaged items supplied please contact ifm electronic� ► Only use accessories from ifm electronic� Accessories: www.ifm.com The optimum function is not ensured when using components from other manufacturers�...
  • Page 7: Functions And Features

    5 Functions and features The unit continuously detects the level in tanks� 5.1 Applications • Water, water-based media • Compatible with 3/4 NPT process connections Application examples: - Detection of cleaning liquid in a parts cleaning system - Detection of cooling water in an industrial cooling system - Detection of hot glue in corrugated cardboard manufacture The unit complies with the standard EN 61000-6-4 and is a class A product�...
  • Page 8: Function

    • The unit is not suitable for applications where the probe is subjected to permanent and high mechanical stress (e�g� heavy movement of viscous media or fast flowing media)� • Use preferably in metal tanks� When used in plastic tanks, deterioration caused by electromagnetic interference may occur (noise immunity to EN61000-6-2)�...
  • Page 9: 6�2 Outputs

    6.2 Outputs The unit generates output signals according to the parameter setting� 2 outputs are available� They can be set separately� OUT1 switching signal for level limit / IO-Link (→ 6.3.7) OUT2 • analogue signal proportional to level 4���20 mA / 20���4 mA •...
  • Page 10: 6�3�2 Analogue Function

    6.3.2 Analogue function The unit provides an analogue signal proportional to level� The analogue output (OUT2) can be set (→ 11.4.6 and the following figures)� • [ou2] defines the output function of the analogue output: - current output rising ([ou2] = [I]) or - current output falling ([ou2] = [InEG]) - The analogue start point [ASP2] defines at which measured value the analogue start value*...
  • Page 11 Curve of the analogue signal (measuring range scaled): I [mA] ASP2 AEP2 ① L: level [ou2] = I (factory setting) ② A: active zone = probe length L - (I1 + I2) [ou2] = [InEG] I1: inactive zone 1 ASP2: analogue start point I2: inactive zone 2 (→...
  • Page 12: 6�3�3 Switching Functions

    6.3.3 Switching functions Via switching output OUT1 (factory setting) or additionally via OUT2 (can be set) the unit signals that a set limit level has been reached or that the level is below the limit. The following switching functions can be selected: •...
  • Page 13: 6�3�4 Damping Function

    6.3.4 Damping function With unsteady level (e�g� turbulence, wave movements) display and 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 means of the parameter [dAP] (→ 11.4.10)� [dAP] indicates in seconds after what time 63 % of the final value is reached in the event of a sudden jump�...
  • Page 14: 6�3�7 Io-Link

    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� 6.3.8 Simulation functions Various levels and errors can be simulated for set-up, maintenance or interference reduction�...
  • Page 15: 7�1�1 Minimum Distances For Installation In Closed Metal Tanks

    7.1.1 Minimum distances for installation in closed metal tanks Fig. 7-1 Fig. 7-2 Without adjustment Installation distances with adjustment (→ Installation distances without adjustment 7�1�7) 10 mm *) A1: 10 mm *) 20 mm A2: 50 mm 20 mm to structures in the tank (B) A3: 50 mm to structures in the tank (B) 50 mm to other sensors type LR 50 mm to other sensors type LR...
  • Page 16: 7�1�3 Applications With Viscous And Fast Flowing Media

    7.1.3 Applications with viscous and fast flowing media ► If possible, install the unit in a bypass pipe / still pipe (→ 7.1.2)� ► In addition, the following aspects have to be considered: ► Probe must not be in contact with the tank Fig.
  • Page 17: 7�1�5 Heavy Soiling

    7.1.5 Heavy soiling If the medium is highly polluted, there is the risk that a bridge forms between the probe and the tank wall or structures in the tank� ► Increase minimum distances depending on the pollution intensity� 7.1.6 Heavy foam build-up and turbulence Heavy foam build-up and turbulence may lead to incorrect measurements�...
  • Page 18: 7�1�7 Notes On Tank Adjustment

    7.1.7 Notes on tank adjustment Tank adjustment [tREF] reduces the effect of interference and ensures a higher excess gain in difficult application conditions� Carry out the tank adjustment only when the unit is installed� For the tank adjustment it is necessary to enter an "adjustment distance" first� Within this distance, starting from the process connection, interfering reflections are compensated�...
  • Page 19: 7�2 Installation Of The Probe

    Carry out a tank adjustment with empty tank, if possible, to detect any possible sources of interference. In this case: ► Select the max� adjustment distance (L - 250 mm)� Only if data storage is required in an IO-Link application: The tank adjustment is not saved via IO-Link�...
  • Page 20: 7�3 Probe Length

    7.3 Probe length 7.3.1 Shorten the probe The probe can be shortened to adapt to different tank heights� Ensure that the probe length is not below the minimum permissible probe length (L ) of 150 mm� The unit does not support probe lengths below 150 mm�...
  • Page 21: 7�4 Installation Of The Unit

    7.4 Installation of the unit 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 22: 7�4�2 Installation In The Tank Lid Using A 3/4 Npt Flange Plate

    7.4.2 Installation in the tank lid using a 3/4 NPT flange plate Fig. 7-9 Fig. 7-10 ► 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 (Fig� 7-9)� The diameter (d) depends on the wall thickness of the tank lid: Wall thickness [mm] 1���5...
  • Page 23: 7�4�3 Installation In Open Metal Tanks

    7.4.3 Installation in open metal tanks ► For installation in open metal tanks, use a metal fixture with 3/4 NPT process connection to install the unit. It serves as a launching plate (R; minimum size: 150 x 150 mm for a square fixture, 150 mm diameter for a circular fixture (→...
  • Page 24: 7�4�4 Installation In Plastic Tanks

    7.4.4 Installation in plastic tanks 150 mm launching plate To enable sufficient transfer of the measured signal, note in case of installation in plastic tanks or metal tanks with plastic lid: ► The plastic lid must be provided with a drill hole with a minimum diameter of 150 mm�...
  • Page 25: 7�5 Alignment Of The Sensor Housing

    7.5 Alignment of the sensor housing The sensor housing cannot be rotated with respect to the internal thread! Subsequent alignment of the sensor housing is therefore not possible� Therefore, the subsequent orientation of the housing (display orientation, cable outlet) must be observed during installation of the process connection on the tank lid�...
  • Page 26: Electrical Connection

    8 Electrical connection The unit must be connected by a qualified electrician� The national and international regulations for the installation of electrical equipment must be adhered to� Voltage supply according to SELV, PELV� For marine applications (if approval available for the device), additional surge protection is required�...
  • Page 27: Operating And Display Elements

    9 Operating and display elements 1 to 8: Indicator LEDs LEDs Selected unit of measurement� 1 - 3 LEDs Not used� 4 - 6 LEDS Only active if the switching output [ou2] = [I] or [InEG] is selected; then: 7 - 6 switching status OUT2 (on when output 2 is switched)�...
  • Page 28: Menu

    10 Menu 10.1 Menu structure inch Menu items highlighted in grey, e�g� [ SP2 ], are only active when assigned parameters have been selected (→ 10.2.1)� main menu (→ 10.2.1) EF level (→ 10.2.2)
  • Page 29 Menu items highlighted in grey, e�g� [ dS2 ], are only active when assigned parameters have been selected (→ 10.2.3)� III : CFG level (→ 10.2.3) ENV level (→ 10.2.4) SIM level (→ 10.2.5)
  • Page 30: 10�2 Explanation Of The Menu

    10.2 Explanation of the menu 10.2.1 Main menu [I] tREF Carry out tank adjustment� Menu item only visible if [LEnG] ≥ 260 mm. SP1 / rP1 Set point 1 / reset point at which OUT1 switches� Menu item only visible if hysteresis function is selected ([ou1] = [H��])� FH1 / FL1 Upper / lower limit for the acceptable range within which OUT1 switches�...
  • Page 31: 10�2�3 Cfg Level (Configuration) [Iii]

    10.2.3 CFG level (configuration) [III] Output configuration for OUT1: • switching signal for level limit� Hysteresis or window function, normally closed or normally open� Output configuration for OUT2: • analogue signal for current level, 4…20 mA or 20…4 mA • switching signal for level limit� Hysteresis or window function, normally closed or normally open�...
  • Page 32: Parameter Setting

    11 Parameter setting During parameter setting the device remains in the operating mode� It continues to monitor with the existing parameters until the parameter setting has been completed� 11.1 Parameter setting in general Select parameter ► Press [Enter] to get to the menu� ►...
  • Page 33 [C�Loc] or [S�Loc] as operation indication see (→ 12.3)� • Change from menu level 1 to menu level 2: ► Press [Enter] to get to the menu� ► Press [▲] or [▼] until [EF] is displayed� ► Press [Enter]� > The first parameter of the submenu is displayed (here: [rES]).
  • Page 34: 11�2 Basic Settings (Set

    11.2 Basic settings (set-up) On delivery of the unit, you must first enter the basic settings� The complete user menu then opens� 11.2.1 Enter probe length ► Select [LEnG]� ► Press [Enter]� > [nonE] is displayed� ► Press [▲] or [▼] for min. 1 s. >...
  • Page 35: 11�2�3 Carry Out Tank Adjustment

    11.2.3 Carry out tank adjustment Menu item only visible if [LEnG] ≥ 260 mm. ► Observe notes (→ 7.1.7)� ► Select [tREF]� ► Press [Enter]� > [nonE] or the value saved from the last tank adjustment (distance value) is displayed� ►...
  • Page 36: 11�4 Set Output Signals

    11.4 Set output signals 11.4.1 Set output function for OUT 1 ► Select [ou1] and set the switching function: [Hno] = hysteresis function / normally open [Hnc] = hysteresis function / normally closed [Fno] = window function / normally open [Fnc] = window function / normally closed Note: If the switching output is used as an overflow prevention, the setting...
  • Page 37: 11�4�6 Set Output Function For Out2

    always on [rPx] irrespective of whether the normally open or normally closed function is used� 11.4.6 Set output function for OUT2 ► Select [ou2] and set the switching function: [I] = current output 4���20 mA [InEG] = current output 20���4 mA [Hno] = hysteresis function / normally open [Hnc] =...
  • Page 38: 11�4�11 Set Delay Time In Case Of A Fault

    11.4.11 Set delay time in case of a fault ► Select [dFo] and set a value between 0���10�0 s� [dFo] only effective in case of a fault� Mind the dynamics of your application� In case of fast level changes it is recommended to adapt the value step by step�...
  • Page 39: 11�7 Simulation

    11.7 Simulation 11.7.1 Set simulation value ► Select [S�LvL] ► Set the process value to be simulated: [Numerical level in mm / inch (depending on the basic setting) value] = [FULL] = full state [SEnS] = weak measured signal [Err] = electronic fault found [EPTY] = empty state...
  • Page 40: Operation

    12 Operation 12.1 Single probe This unit is intended for operation with a single probe� A coaxial probe cannot be used with this unit� 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�...
  • Page 41: 12�3 Operation Indication

    12.3 Operation indication ---- continuous Initialisation phase after power on On delivery the unit is not operational� Basic settings required (→ 11.2)� [----] Level below the active zone Numerical value + LED 1 Current level in mm Numerical value + LED 2 Current level in inches Numerical value + LED 3 Current level in % of the scaled measuring range...
  • Page 42: 12�6 Error Indications

    12.6 Error indications Possible cause Recommended measures [Err] Fault in the electronics� Replace the unit� Probe detached from the unit; Check whether the probe is still [nPrb] possibly incorrect setting of the attached to the unit� Check the probe length� parameter [LEnG]�...
  • Page 43: 12�7 Output Response In Different Operating States

    20...20.5 mA With [ou2] = [InEG]: 4...3.8 mA Empty signal: With [ou2] = [I]: 4...3.8 mA With [ou2] = [InEG]: 20...20.5 mA 13 Technical data Technical data and scale drawing at www�ifm�com� Setting ranges [LEnG] inch Setting range 150���2000 6�0���78�8 Step increment 0�2...
  • Page 44: Maintenance / Transport

    The setting ranges for analogue start point (ASP2) and analogue end point (AEP2) depend on the probe length (L). In general the following applies: inch [ASP2] [AEP2] L - 30 L - 1�2 Step increment 0�05 • Minimum distance between [ASP2] and [AEP2] = 20 % of the active zone� 14 Maintenance / transport ►...
  • Page 45: Factory Setting

    15 Factory setting Factory setting User setting tREF nonE 50% VMR* 0,2 inch below SP1 ASP2 0% VMR* AEP2 100% VMR* inch FOU1 FOU2 SELd LEnG nonE MEdl nonE S.LVL 50 % LEnG S.Tim S.On * VMR = final value of the measuring range = LEnG value minus 1�2 (in inch)� When the LEnG value is entered, the unit calculates the basic setting�...
  • Page 46: Notes On Parameter Setting Via Io-Link

    16 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� Make sure that the basic settings are entered correctly according to the attached probe and the medium to be detected�...
  • Page 47: 16�2 Unit Locking / Data Storage (As From Io-Link V1�1)

    For safety reasons the parameter download can be refused by the sensor� Factory setting: [Open] Data storage - [Open] = unit allows parameter download - [Locked] = unit refuses parameter download More information at www�ifm�com...

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