New 3-colour display Electromagnetic Type Digital Flow Switch RoHS 앬Compact/Lightweight 앬Weight: 340 g IP65 (LFE1쏔3) Actual size 40 mm 56 mm 90 mm Oval fluid passage reduced product width 앬Operating fluid temperature: 0 to 85°C 앬Reverse flow can be detected. (Refer to page 4.) Reverse flow error display 앬Current consumption: 45 mA Reduced by up to 10% when the display is off.
Series L LFE FE 쏔 Electromagnetic E lectromagnetic Type Type D Digital igit Flow Switch 앬 Pressure loss: 0.02 MPa or less 앬 Repeatability: ±1.5 % F.S. (Analogue output) 앬 Flow direction can be changed after installation. 앬 쐽Default flow direction (Normal flow) 3-colour/2-screen display OUT Instantaneous flow rate is displayed. Customer’s flow direction IN Parameters below can be set. 쐽Flow direction can be changed after installation.
Flow Switch for Liquid Variations Series Applicable Detection Minimum Enclosure∗ fluid method setting unit Display Rated flow range [L/min] 0 0.5 2 5 10 20 30 40 50 100 150 200 250 LFE New 0.1 L/min Water/ Electromagnetic 0.5 L/min Water-soluble type coolant 0.5 IP65 3-colour display 20 2.5 100 5 1 L/min 200 PF3W 0.01 L/min 0.5 0.1 L/min Water/ Ethylene glycol aqueous solution Karman vortex 0.
3-colour display Electromagnetic Type Digital Flow Switch Series LFE RoHS Integrated display type How to Order Output specifications Symbol J K OUT Analogue 1 to 5 V Analogue 4 to 20 mA Remote type sensor unit LFE 1 J 3 Integrated display type LFE 1 B 3 Rated flow range Symbol — 1 2 3 4∗ 5∗ 6∗ 7∗ Output specifications OUT2 NPN PNP Analogue 1 to 5 V Analogue 4 to 20 mA 3 4 6 8 3/8 1/2 3/4 1 Applicable model LFE1 LFE2 LFE3 앬 앬 — — — — 앬 — — — — 앬 Option/Part No.
3-colour display Electromagnetic Type Digital Flow Switch Series LFE Specifications (Integrated Display Type) Model Applicable fluid Note 1) Applicable fluid conductivity Note 1) Detection method Ground Note 10) Rated flow range Display flow range Set flow range Zero-cut flow Note 2) Minimum setting unit Accumulated volume per pulse (Pulse width: 50 ms) Operating fluid temperature Note 3) Display units Repeatability Temperature Ambient temperature characteristics Fluid temperature Operating pressure range
Series LFE Specifications (Remote Type Sensor Unit) Model Applicable fluid Note 1) Applicable fluid conductivity Note 1) Detection method Ground Note 5) Rated flow range Operating fluid temperature Note 2) Repeatability Temperature Ambient temperature characteristics Fluid temperature Operating pressure range Note 2) Proof pressure Note 2) Response time Note 3) Analogue Voltage output output Current output Power supply voltage Current consumption Enclosure Environmental Operating temperature range resistanc
Series LFE 3-colour display Electromagnetic Type Digital Flow Switch Flow-rate Characteristics (Pressure Loss) 0.04 0.04 0.02 0.03 0.02 0.01 0 0 5 10 15 Pressure loss [MPa] LFE3 Pressure loss [MPa] LFE2 Pressure loss [MPa] LFE1 0.03 0.02 0.01 0 20 0 20 Flow value [L/min] 40 60 80 0.015 0.01 0.
Series LFE Internal Circuits and Wiring Examples (Integrated Display Type) PNP 2 outputs type LFE쏔B쏔쏔쏔 NPN 2 outputs type LFE쏔A쏔쏔쏔 Black OUT1 Brown DC (+) Load Load Main circuit Main circuit Brown DC (+) 24 VDC White OUT2 Black OUT1 Load Blue DC (−) Blue DC (−) Max. 28 V, 80 mA Internal voltage drop 1 V or less Load Max. 80 mA Internal voltage drop 1.
3-colour display Electromagnetic Type Digital Flow Switch Series LFE Parts Description Body Lead wire with M12 connector (4 pins) Display Connector Piping port Piping port Description Connector Lead wire with M12 connector Piping port Display Bracket Bracket (Option) Function M12 connector for electrical connections Cable for supplying power to the product and for receiving output For piping connections Displays the flow, set values and error information.
Series LFE Dimensions Integrated display type LFE1/2/3 S 4 × T R Remote type sensor unit LFE1/2/3 Without bracket (Bottom view) A B ∗ Dimensions are the same as those for integrated display type. IN OUT Note) The electrical entry for lead wire with M12 connector does not rotate and is limited to only one entry direction. ∗ For integrated display type Bracket thickness is approx. 1.6 mm. K dth J ac 2 x Port size N M C sH lat sf ros 4 xO Wi I L D P Q 1.
3-colour display Digital Flow Monitor Series RoHS LFE0 How to Order LFE 0 B MV C Type 0 Option 2 Remote type monitor unit — Without connector Sensor connector (1 pc.) For remote type sensor unit, select the analogue output 1 to 5 V type. Applicable sensors: LFE쏔J쏔쏔쏔 Sensor connector (e-con) C Output specifications Symbol OUT1 NPN A PNP B NPN C NPN D OUT2 NPN PNP Analogue 1 to 5 V Analogue 4 to 20 mA Connector is not connected, but shipped together.
Series LFE0 Specifications LFE0 Model Display flow range Set flow range Minimum setting unit Accumulated volume per pulse Display units Accuracy Repeatability Temperature characteristics Accumulated flow range Note 1) Switch output Analogue output Maximum load current Maximum applied voltage Internal voltage drop Response time Note 2) Output protection Output Flow rate mode Temperature Response time Note 3) Voltage output Current output Hysteresis Input/output Display method Status LED’s Power supply vo
3-colour display Digital Flow Monitor Series LFE0 Internal Circuits and Wiring Examples PNP 2 outputs type LFE0B Brown DC (+) Brown DC (+) Black OUT1 Load Black OUT1 Load White OUT2 Main circuit 24 VDC Grey COPY Grey COPY Blue DC (−) Main circuit Load Sensor input circuit 1 to 5 V (Flow value) White r Brown DC (+) DC (−) Blue e Black OUT1 Load N.C. w White Analogue output 24 VDC DC (+) Brown q Load ∗ Do not connect N.C.
Series LFE0 Parts Description (Remote Type Monitor Unit) Main screen (2-colour display) Sensor connector Output display (Status LED’s) Unit display Sub screen UP button Power supply/output connection lead wire SET button DOWN button Description Function Main screen (2-colour display) Displays the flow value, setting mode and error codes. Sub screen Displays the accumulated flow, set value, peak/bottom value, fluid temperature and line names. In the setting mode, the set status is displayed.
3-colour display Digital Flow Monitor Series LFE0 Dimensions 40.1 Sensor connector (4P) (7.5) 40 2.5 6 40 쏔36.8 NC/IN Power supply/output connector (5P) Front protective cover + Panel mount adapter 9.4 53 (2) 46.4 쏔42.4 47 Panel mount adapter Front protective cover Panel Waterproof seal Panel fitting dimensions Applicable panel thickness: 0.5 to 8 mm (Without waterproof seal) 0.5 to 6 mm (With waterproof seal) 48 or more les or R1 4x 55 or more 37.5 +0.1 −0.2 s 37.5 +0.1 −0.
Series LFE Function Details 왎 Output operation 왎 Forced output function The output operation can be selected from the following: Output (hysteresis mode and window comparator mode) corresponding to instantaneous flow rate, output corresponding to accumulated flow, or accumulated pulse output Output is turned ON/OFF compulsorily when starting the system or during maintenance. This enables confirmation of the wiring and prevents system errors due to unexpected output.
Function Details Series LFE 왎 Selection of power saving mode 왎 Peak/Bottom value display The display can be turned off to reduce the power consumption (Approx.10%). In power saving mode, only decimal points blink. If any button is pressed during power saving mode, the display is recovered for 30 seconds to check the flow etc. The maximum (minimum) flow value is detected and updated from when the power supply is turned on.
Series LFE 왎 Error display function When a failure or abnormality occurs, the location and contents are displayed. Display alternately displays [999] and [999999] ( 15 ) Description Contents OUT1 over current error Load current of 80 mA or more is applied to the switch output (OUT1). Action OUT2 over current error Load current of 80 mA or more is applied to the switch output (OUT2). Excessive instantaneous flow rate error Flow has exceeded the display flow range. Decrease the flow.
Series LFE Specific Product Precautions 1 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and Operation Manual for Flow Switch Precautions. Please download it via our website, http://www.smcworld.com Design and Selection Mounting Warning Warning 1. Since the type of fluid varies depending on the product, be sure to verify the specifications. The switches do not have an explosion proof rating.
Series LFE Specific Product Precautions 2 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and Operation Manual for Flow Switch Precautions. Please download it via our website, http://www.smcworld.com Mounting Maintenance 1. When connecting the piping to the switch, do not rotate the switch. Apply a wrench to the metal part of the piping port to turn the fitting. 1.
Series LFE Specific Product Precautions 3 Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC Products” (M-E03-3) and Operation Manual for Flow Switch Precautions. Please download it via our website, http://www.smcworld.com Others Warning 1. After the power is turned on, the switch’ s output remains off while a message is displayed. (Approx. 3 sec.) Therefore, start the measurement after a value is displayed. 2.
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Safety Instructions Caution: These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC)∗1), and other safety regulations. Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
