Pepperl+Fuchs KFD2-SOT3-EX1.LB Switch Amplifier

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1 year warranty

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Brand:
Other
Order(MOQ):
1
Payment:
T/T
Product Origin:
GERMANY
Color:
Brand New
Shipping Port:
Xiamen
Product Origin:
GERMANY
Lead Time:
3-5 days

Product Detail

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Pepperl+Fuchs KFD2-SOT3-EX1.LB

The KFD2-SOT3-Ex1.LB is a 1-channel isolated barrier switch amplifier from Pepperl+Fuchs, designed for intrinsic safety applications in hazardous areas . It functions as a digital input interface, transferring signals from NAMUR sensors or dry contacts located in a hazardous (explosive) area to a safe (non-hazardous) area .

This device is powered by a 24 V DC supply, which can be connected via a Power Rail for easy system integration, or through individual terminals . The unit includes Line Fault Detection (LFD) to monitor the field circuit for wire breakage or short-circuits, a reversible mode of operation.

Input	Connection	terminals 1+, 2+, 3-
	Switching point/switching hysteresis	1.2 ... 2.1 mA / approx. 0.2 mA
	Open circuit voltage/short-circuit current	approx. 10 V DC / approx. 8 mA
	Line fault detection	breakage I ≤ 0.1 mA , short-circuit I ≥ 6.5 mA
	Pulse/Pause ratio	min. 100 µs / min. 100 µs
Output	Rated voltage	Ur	30 V DC
	Rated current	Ir	100 mA , short-circuit protected
	Response time	≤ 200 µs
	Output I	signal ; Transistor
	Output II	signal or error message ; Transistor
Ambient temperature	-20 ... 60 °C (-4 ... 140 °F)
Mass	0.12kg
Dimensions	12x11.3x2cm

FAQ

Q1. What is the primary function of the KFD2-SOT3-Ex1.LB ?
This isolated barrier is used for intrinsic safety applications, transferring digital signals from NAMUR sensors or dry contacts located in a hazardous area to a safe area while providing galvanic isolation to prevent dangerous energy from entering the explosive environment .

Q2. How does the line fault detection (LFD) feature work?

The device monitors the field circuit for wiring faults by detecting when the input current drops below 0.1 mA (indicating a wire break) or rises above 6.5 mA (indicating a short circuit), and these fault conditions are signaled via LEDs according to NAMUR NE44 and a collective error message output on the Power Rail .

Q3. What is the signal splitter capability of this module?

The single input controls two passive transistor outputs, and via DIP switch configuration, the function of the second output can be defined either as a signal output (following output I) or as a dedicated fault indication output, making the device usable as a 1-input, 2-output signal splitter .

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