Pepperl+FuchsProximity SensorsInductive Sensors
Inductive sensor NCN3-F31K-B3B-B31
Valve positioner and valve control module

Part number: NCN3-F31K-B3B-B31

  • Direct mounting on standard actuators
  • A/B node with extended addressing possibility for up to 62 nodes
  • Mode of operation, programmable
  • Degree of protection IP67
  • Communication monitoring, turn-off
  • Lead breakage and short-circuit monitoring of the valve
  • LEDs for switching state of sensor and solenoid valve
    • Datasheet NCN3-F31K-B3B-B31

    Specification

    General specifications
    Switching functionNormally open/closed (NO/NC) programmable
    Output typeAS-Interface
    Rated operating distance3 mm
    Installationflush mountable
    Assured operating distance0 ... 2.43 mm
    Reduction factor rAl 0.5
    Reduction factor rCu 0.45
    Reduction factor r304 1
    Reduction factor rSt37 1.2
    Node typeA/B node
    AS-Interface specificationV3.0
    Required gateway specification≥ V2.1
    Nominal ratings
    Operating voltage26.5 ... 31.9 V via AS-i bus system
    Switching frequency0 ... 100 Hz
    No-load supply current≤ 35 mA
    Functional safety related parameters
    MTTFd842 a
    Mission Time (TM)20 a
    Diagnostic Coverage (DC)0 %
    Indicators/operating means
    LED PWRAS-Interface voltage; LED green
    LED INswitching state (input); LED yellow
    LED OUTbinary LED yellow/red
    yellow: switching state
    red: lead breakage/short-circuit
    Electrical specifications
    Rated operating voltage26.5 ... 31.6 V from AS-Interface
    Rated operating current100 mA
    Compliance with standards and directives
    Standard conformity
    Electromagnetic compatibilityEN 50295:1999-10
    StandardsEN 60947-5-2:2007
    EN 60947-5-2/A1:2012
    IEC 60947-5-2:2007
    IEC 60947-5-2 AMD 1:2012
    Approvals and certificates
    UL approvalcULus Listed, General Purpose
    CSA approvalcCSAus Listed, General Purpose
    CCC approvalCCC approval / marking not required for products rated ≤36 V
    Ambient conditions
    Ambient temperature-25 ... 70 °C (-13 ... 158 °F)
    Mechanical specifications
    Connection (system side)screw terminals
    Core cross section (system side)1.5/2.5 mm2 flexible/rigid
    Connection (valve side)screw terminals
    Core cross section (valve side)1.5/2.5 mm2 flexible/rigid
    Housing materialPBT
    Sensing facePBT
    Degree of protectionIP67
    Material
    HousingPBT
    Tightening torque, fastening screws4 Nm ... 5 Nm
    Tightening torque, housing screws1 Nm
    Tightening torque, cable glandM20 x 1.5 ; max. 7 Nm
    M12 x 1.5 ; max. 1.5 Nm
    Notevalve voltage limited to 26,4 V max.; valve power 2,5 W max.