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SMC Networks LFE Series User Manual
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SMC Networks LFE Series User Manual

Electromagnetic type digital flow switch
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3-Color Display Electromagnetic Type Digital Flow Switch
LFE 
Series
Compact/Lightweight
Oval fluid passage reduced product width
Reverse flow can be detected.
Reverse flow error display
Reverse flow error (Code LLL)
Reverse flow
Applicable fluids: Water, Water-soluble coolant
Variations
Integrated display type/
Remote type
0.5 L/min 2 L/min 5 L/min 10 L/min 20 L/min
LFE1
LFE2
LFE3
Display flow range
Flow range
50 L/min 100 L/min 200 L/min
Rated flow range
Display flow range
Rated flow range
Rated flow range
340
Weight:
90
Operating fluid temperature:
Current consumption:
Reduced by up to
(Refer to page 379.)
Display flow range
RoHS
g
(LFE13)
mm
0
85°C
to
(Refer to page 365.)
45
mA
10
% when the display is off.
Integrated display type
Remote type
Sensor unit
3-color display
IP65
PFM
PFMB
PFMC
PFMV
PF2A
PF3W
LFE
LFE
PF2D
IF
Monitor unit
359

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Summary of Contents for SMC Networks LFE Series

  • Page 1 3-Color Display Electromagnetic Type Digital Flow Switch LFE  Series RoHS IP65 Compact/Lightweight Weight:   (LFE13) Oval fluid passage reduced product width 85°C Reverse flow can be detected. Operating fluid temperature:   (Refer to page 365.) Reverse flow error display Current consumption: ...
  • Page 2 LFE  Series Electromagnetic Type Digital Flow Switch Pressure loss:  0.02 MPa or less ±1.5 Repeatability: % F.S.  (Analog output) Flow direction can be changed after installation. -color/ -color/ -screen display -screen display    Default flow direction (Normal flow) Instantaneous flow rate is displayed.
  • Page 3 Flow Switch for Liquid Variations Rated flow range [L/min] Applicable Detection Minimum ∗ Series Enclosure Display fluid method setting unit 0 0.5 10 20 30 40 50 0.1 L/min Water/ Electromagnetic 3-color Water-soluble 0.5 L/min IP65 type display coolant 1 L/min PF3W 0.01 L/min 0.1 L/min...
  • Page 4 3-color display Electromagnetic Type Digital Flow Switch RoHS Series Integrated display type How to Order Output specifications Symbol Analog 1 to 5 V Analog 4 to 20 mA Remote type sensor unit Remote type Integrated display type monitor unit Remote type For details, refer sensor unit to page 369.
  • Page 5 Series 3-color display Electromagnetic Type Digital Flow Switch Specifications (Integrated Display Type) LFE1 LFE2 LFE3 Model Applicable fluid Note 1) Water, Conductive fluids which do not corrode the fluid contact materials. Note 1) Applicable fluid conductivity 5 µS/cm or more (micro siemens) Note 1) Detection method Electrostatic capacity type...
  • Page 6 Series Specifications (Remote Type Sensor Unit) Refer to page 370 for the monitor unit specifications. LFE1 LFE2 LFE3 Model Applicable fluid Note 1) Water, Conductive fluids which do not corrode the fluid contact materials. Note 1) 5 µS/cm or more (micro siemens) Applicable fluid conductivity Note 1) Detection method...
  • Page 7 Series 3-color display Electromagnetic Type Digital Flow Switch Flow Rate Characteristics (Pressure Loss) LFE1 LFE2 LFE3 0.04 0.04 0.02 0.03 0.03 0.015 0.02 0.02 0.01 0.01 0.01 0.005 Flow value [L/min] Flow value [L/min] Flow value [L/min] Straight Piping Length and Accuracy (Reference Value) Accuracy change Straight piping Straight piping...
  • Page 8 Series Internal Circuits and Wiring Examples (Integrated Display Type) NPN 2 outputs type PNP 2 outputs type LFEA LFEB Brown DC (+) Brown DC (+) Load Black OUT1 Black OUT1 Load Load 24 VDC 24 VDC White OUT2 White OUT2 Load Blue DC (−) Blue DC (−)
  • Page 9 Series 3-color display Electromagnetic Type Digital Flow Switch Parts Description Body Lead wire with M12 connector (4 pins) Display Connector Piping port Piping port Description Function Connector M12 connector for electrical connections Lead wire with Cable for supplying power to the product and for receiving M12 connector output Piping port...
  • Page 10 Series Dimensions Integrated display type LFE1/2/3 2 x Port size ∗ ∗ For integrated display type Note) The electrical entry for lead wire with M12 connector does not rotate and is limited to only one entry direction. Remote type sensor unit LFE1/2/3 Bracket thickness is approx.
  • Page 11 3-color display Digital Flow Monitor RoHS LFE0 Series How to Order LFE A M V C Type Option 2 Remote type monitor unit Without connector Sensor connector (1 pc.) For remote type sensor unit, select the analog output 1 to 5 V type. Sensor connector Applicable sensors: LFEJ...
  • Page 12 LFE0 Series Specifications LFE0 Model 0.4 to 24.0 L/min 2.0 to 120.0 L/min 4 to 240 L/min Display flow range (Flow under 0.4 L/min is displayed as “0.00”) (Flow under 2.0 L/min is displayed as “0.0”) (Flow under 4 L/min is displayed as “0.0”) Set flow range 0.4 to 24.0 L/min 2.0 to 120.0 L/min...
  • Page 13 LFE0 Series Digital Flow Monitor 3-color display Internal Circuits and Wiring Examples NPN 2 outputs type PNP 2 outputs type LFE0A LFE0B Brown DC (+) Brown DC (+) Load Black OUT1 Black OUT1 Load Load White OUT2 24 VDC White OUT2 24 VDC Gray COPY Gray COPY...
  • Page 14 LFE0 Series Parts Description (Remote Type Monitor Unit) Main screen (2-color display) Sensor connector Output display (Status LED’s) Unit display Sub screen UP button SET button DOWN button Power supply/output connection lead wire Description Function Main screen (2-color display) Displays the flow value, setting mode and error codes. Displays the accumulated flow, set value, peak/bottom value, fluid temperature and line Sub screen names.
  • Page 15 LFE0 Series Digital Flow Monitor 3-color display Dimensions (7.5) 40.1 Sensor connector (4P) NC/IN Power supply/output connector (5P) Front protective cover + Panel mount adapter Panel mount adapter Front protective cover Panel Waterproof seal Panel fitting dimensions Applicable panel thickness: 48 or more 0.5 to 8 mm (Without waterproof seal) 37.5...
  • Page 16 Series Function Details  Output operation  Forced output function The output operation can be selected from the following: Output is turned ON/OFF compulsorily when starting the system or Output (hysteresis mode and window comparator mode) correspond- during maintenance. This enables confirmation of the wiring and ing to instantaneous flow rate, output corresponding to accumulated prevents system errors due to unexpected output.
  • Page 17 Series Function Details  Selection of power saving mode  Peak/Bottom value display The display can be turned off to reduce the power consumption The maximum (minimum) flow value is detected and updated from (Approx.10%). In power saving mode, only decimal points blink. If any when the power supply is turned on.
  • Page 18 Series  Error display function When a failure or abnormality occurs, the location and contents are displayed. Display Description Contents Action Load current of 80 mA or more is applied to the OUT1 over current error switch output (OUT1). Eliminate the cause of the over current by turning off the power supply and then turn it on again.
  • Page 19 Series Specific Product Precautions 1 Be sure to read this before handling the products.Refer to back page 50 for Safety Instructions and pages 202 and 203 for Flow Switch Precautions. Installation Mounting Warning Warning 1. Since the type of fluid varies depending on the 1.
  • Page 20 Series Specific Product Precautions 2 Be sure to read this before handling the products.Refer to back page 50 for Safety Instructions and pages 202 and 203 for Flow Switch Precautions. Mounting Caution 1. When connecting the piping to the switch, do not 5.
  • Page 21 Series Specific Product Precautions 3 Be sure to read this before handling the products.Refer to back page 50 for Safety Instructions and pages 202 and 203 for Flow Switch Precautions. Operating Precautions Fluid Warning Caution 1. Operate fluids with electric conductivity of 5 µS/cm 1.
  • Page 22 Series Specific Product Precautions 4 Be sure to read this before handling the products.Refer to back page 50 for Safety Instructions and pages 202 and 203 for Flow Switch Precautions. Others Warning 1. After the power is turned on, the switch’ s output re- mains off while a message is displayed.
  • Page 25 INFORMATION Electromagnetic Type Digital Flow Switch/ Piping Connection Ports: Stainless Steel 304 RoHS Piping connection ports material: Stainless steel 304 VPressure loss: 0.02 or less VRepeatability: ±1.5 Stainless % F.S. steel 304 (Analog output) VCurrent consumption: VCompact -color/ -screen display 50 mm Instantaneous flow rate...
  • Page 26 3-color display Electromagnetic Type Digital Flow Switch LFE-X8 Integrated display type How to Order Output specifications Symbol Analog 1 to 5 V Analog 4 to 20 mA Remote type sensor unit Remote type Integrated display type monitor unit Remote type (For details, refer sensor unit to page 5.)
  • Page 27 LFE-X8 3-color display Electromagnetic Type Digital Flow Switch Specifications (Integrated Display Type) LFE1-X8 LFE2-X8 LFE3-X8 Model Applicable fluid * Water, Conductive fluids which do not corrode the fluid contact materials. * Applicable fluid conductivity * 5 μS/cm or more (micro siemens) Detection method Electrostatic capacity type Ground *...
  • Page 28 LFE-X8 Specifications (Remote Type Sensor Unit) LFE1-X8 LFE2-X8 LFE3-X8 Model Applicable fluid * Water, Conductive fluids which do not corrode the fluid contact materials. * Applicable fluid conductivity * 5 μS/cm or more (micro siemens) Detection method Electrostatic capacity type Ground * Negative ground Rated flow range *...
  • Page 29 LFE-X8 3-color display Electromagnetic Type Digital Flow Switch Dimensions LFE1/2/3-X8 Integrated display type 2 x Port size 1.4 ∗ ∗1 For integrated display type ∗ The electrical entry for lead wire with M12 connector does not rotate and is limited to only one entry direction. LFE1/2/3-X8 Remote type sensor unit Bracket thickness is approx.
  • Page 30 3-color display Digital Flow Monitor RoHS LFE0 Series How to Order LFE A M V C Type Option 2 Remote type monitor unit Without connector Sensor connector (1 pc.) For remote type sensor unit, select the analog output 1 to 5 V type. Sensor connector Applicable sensors: LFElJlll (e-con)
  • Page 31 LFE0 Series 3-color display Digital Flow Monitor Specifications LFE0 Model 0.4 to 24.0 L/min 2.0 to 120.0 L/min 4 to 240 L/min Display flow range (Flow under 0.4 L/min is displayed as “0.00”) (Flow under 2.0 L/min is displayed as “0.0”) (Flow under 4 L/min is displayed as “0.0”) Set flow range 0.4 to 24.0 L/min...
  • Page 32 LFE0 Series Dimensions 40.1 (7.5) Sensor connector (4P) NC/IN Power supply/output connector (5P) Front protective cover + Panel mount adapter Panel mount adapter Front protective cover Panel Waterproof seal Panel fitting dimensions 48 or more Applicable panel thickness: 0.5 to 8 mm (Without waterproof seal) 37.5 +0.1 −0.2...

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