Pepperl+Fuchs KFD2-ST3-Ex2
Switch Amplifier

Pepperl+Fuchs KFD2-ST3-Ex2
We ship to United States of America!
  • 2-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Dry contact or NAMUR inputs
  • Active transistor output
  • Line fault detection (LFD)
  • Reversible mode of operation
  • Up to SIL 2 acc. to IEC 61508
Item Number: KFD2-ST3-Ex2
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Rated voltage19 ... 30 V DC
Connectionterminals 1+, 2+, 3-; 4+, 5+, 6-
Configurationvia DIP switches
Line fault detectionbreakage I 0.1 mA , short-circuit I 6.5 mA
Open circuit voltage/short-circuit currentapprox. 10 V DC / approx. 8 mA
Display elementsLEDs
Electromagnetic compatibilityNE 21:2012 , EN 61326-3-2:2008
Rated current100 mA
Labelingspace for labeling at the front
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2
Response time 200 micro/s
Control elementsDIP-switch
Rated voltage30 V DC
Connection sidecontrol side
Connectionscrew terminals
Massapprox. 150 g
Switching frequency 5 kHz
Safety Integrity Level (SIL)SIL 2
Ripple 10 %
Signal typeDigital Input
Connectionoutput I: terminal 7+ ; output II: terminal 9+
Ambient temperature-20 ... 60 ?°C (-4 ... 140 ?°F)
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Collective error messagePower Rail
Output Isignal ; Transistor
ConnectionPower Rail or terminals 14+, 15-
Output IIsignal ; Transistor
Signal level1-signal: (supply voltage) - 3 V max. for 100 mA
0-signal: blocked output (off-state current 10 andmicro;A)
Optional accessoriespower feed module KFD2-EB2
Universal Power Rail UPR-03
Universal Power Rail UPR-03-S
profile rail K-DUCT-BU
profile rail K-DUCT-UPR-03
Rated valuesacc. to EN 60947-5-6 (NAMUR)
Pulse/Pause ratiomin. 100 micro/s / min. 100 micro/s
Rated current20 ... 15 mA + Iout
Switching point/switching hysteresis1.2 ... 2.1 mA / approx. 0.2 mA
Connection sidefield side
Power dissipation 900 mW including maximum power dissipation in the output
EU-Type Examination CertificateEXA 16 ATEX 0016 X
Degree of protectionIP20
Degree of protectionIEC 60529:2001
IECEx approvalIECEx EXA 16.0009X

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