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The KFD2-SOT3-Ex1.LB is a 24V DC powered, single-channel isolated switch amplifier by Pepperl+Fuchs. It is designed to transfer NAMUR sensor signals from hazardous areas (intrinsically safe) to safe areas via high-speed transistor outputs with galvanic isolation. Featuring Line Fault Transparency (LB), this model can automatically detect lead breakages or short circuits in the input loop, making it a critical control component that combines rapid response with intrinsic safety protection.
High-Speed Switching Performance
Advanced Line Fault Transparency - LB
Intrinsic Safety & High Reliability
This isolated barrier is used for intrinsic safety applications. The device transfers digital signals (NAMUR sensors or dry contacts) from a hazardous area to a safe area. The input controls two passive transistor outputs. Via switches the mode of operation can be reversed and the line fault detection can be switched off. Via switch the function of the second output can be defined as a signal output or a fault indication output. A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Pepperl+Fuchs KFD2-SOT3-Ex1.LB Proximity Probe Housing Assemblies Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Oil & Gas
Used for level limit switch signal transmission in oil tank farms to prevent electrical sparks from triggering explosions in hazardous areas.
Chemical Industry
Monitoring mechanical pressure switches on chemical reactors, safely relaying switch statuses from hazardous zones to DCS control systems.
Wastewater Treatment
Monitoring float switch statuses in sedimentation tanks, providing explosion protection particularly in anaerobic environments where methane (biogas) is generated.
Power & Energy
Monitoring emergency shut-off valves on gas turbine fuel supply lines, utilizing the LB function to detect lead breakages.
Coatings & Paint Manufacturingl
Connecting NAMUR proximity sensors in mixing equipment, acting as a safety barrier in blending areas filled with Volatile Organic Compounds (VOCs).
Blue terminals (1, 2, 3) are Intrinsically Safe (IS) and must connect to devices in hazardous areas. Green terminals are Non-IS. IS and Non-IS wiring must be routed separately (usually with a 50mm clearance) to prevent energy cross-over. There are 4 DIP switches on the side. S1 controls the output logic (Normal/Inverted), and S2 enables/disables Line Fault Transparency (LB). Ensure these match your application requirements before startup.The module is rated IP20 and must be installed in an appropriate enclosure. Keep the environment dry to prevent condensation, which can cause short circuits.
What is the primary function of the KFD2-SOT3-Ex1.LB?
It is an isolated switch amplifier used to safely transfer signals from NAMUR sensors or dry contacts in hazardous areas to PLC/DCS systems in safe areas.
What type of output does the KFD2-SOT3-Ex1.LB use?
It uses passive transistor outputs, characterized by fast response times and no mechanical wear.
What does
LB stands for "Line Fault Transparency," which detects lead breakage or short-circuit faults on the input side.
How many channels does the KFD2-SOT3-Ex1.LB support?
This is a single-channel module, but it provides three transistor outputs.
What is the response time of the KFD2-SOT3-Ex1.LB?
Its response time is very fast, typically less than or equal to 200 microseconds (µs).
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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