Pepperl+Fuchs KFD2-SR2-Ex1.W.LB Isolator | 2-Channel, 4-20mA, Relay, 24V DC, Hazardous Area

Pepperl+Fuchs KFD2-SR2-Ex1.W.LB isolator specifications. 2-channel, 4-20mA to relay, 24V DC, DIN rail, for hazardous areas.

Product Overview

The Pepperl+Fuchs KFD2-SR2-Ex1.W.LB is a 2-channel isolating signal conditioner designed for use in hazardous areas. It accepts two 4-20mA input signals from field devices and converts each into a relay output. Operating on 24V DC, it provides galvanic isolation between the field (Ex i) and safe-area circuits, enabling alarm generation or logic control. Its DIN rail mountable design makes it a compact solution for panel integration in process control systems.

Technical Specifications (Isolator)

Technical Specifications (Electrical/Mechanical)

Key Features

• Dual-Channel Design:​ Saves space by handling two signals in one module

• Relay Outputs:​ Enable direct switching of alarms, indicators, or contactors

• Hazardous Area Interface:​ Connects intrinsically safe (Ex i) field circuits to safe area

• Programmable Switching Points:​ Configurable high/low limits or window function per channel

• Galvanic Isolation:​ Protects control system from field-side disturbances

• Compact DIN Rail Mounting:​ Efficient use of control panel space

• LED Status Indicators:​ Per channel for power, input, and relay state

• Wide Range Certifications:​ Approved for global use in explosive atmospheres

Applications

• Generating dual alarm contacts from 4-20mA process signals (e.g., pressure, level)

• Interfacing field transmitters in hazardous areas with PLC control systems

• Safety interlocking based on analog process values

• General signal conditioning and isolation in process industries (oil & gas, chemical)