PRODUCT DESCRIPTION
PEPPERL & FUCHS 017704 - KFD2-SR2-EX1.W.SM Intrinsic Safety Barrier, Switch Amplifier
The PEPPERL & FUCHS KFD2-SR2-EX1.W.SM is a 2-channel intrinsic safety barrier from the K-System family, engineered to provide galvanic isolation and energy limitation for intrinsically safe circuits in hazardous areas. It functions as a switch amplifier, interfacing NAMUR proximity switches or mechanical contacts located in Zone 0, 1, or 2 with control systems in the safe area via relay outputs. This module is critical for ensuring compliance with explosion protection standards in process automation applications.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2)
- COMPONENT TYPE: Intrinsic Safety Barrier, Switch Amplifier
- ELECTRICAL SPECS:
- INPUT: 2-channel, for NAMUR sensors (EN 60947-5-6) or potential-free contacts
- OUTPUT: 2 x SPDT (Single Pole Double Throw) relay outputs
- SUPPLY VOLTAGE: 20-35VDC (Nominal 24VDC)
- SWITCHING CAPACITY: 250VAC/2A or 125VDC/2A (Resistive load)
- POWER CONSUMPTION: Approximately 1.5W per channel at 24VDC
- INTERFACE/CONTROL:
- SIGNAL INPUT: NAMUR sensor or dry contact
- SIGNAL OUTPUT: Relay contact closure
- CONFIGURATION: DIP switches for operating mode (NO/NC), line fault detection (LFD)
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- OPERATING TEMPERATURE: -20 to +60 °C
- MOUNTING: 35mm DIN rail
- COOLING: Natural convection
- COMPATIBILITY/APPLICATION:
- HAZARDOUS AREA CLASSIFICATION: Ex ia IIC, Ex ia IIB, Ex ia IIA (for Zone 0, 1, 2)
- SAFETY INTEGRITY LEVEL (SIL): Up to SIL 2 (IEC 61508/IEC 61511)
- TARGET SYSTEMS: Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), Emergency Shutdown (ESD) systems
- FIELD DEVICES: Proximity switches, limit switches, push buttons, level switches in hazardous locations