PRODUCT DESCRIPTION
PEPPERL & FUCHS 418676 - KFD2-CD-EX1.PN Intrinsic Safety Barrier
This module is an intrinsic safety barrier from the K-System series, engineered to interface NAMUR proximity sensors or mechanical contacts located in hazardous areas with control systems in safe areas. It provides galvanic isolation and converts the input signal into a safe area relay output and a passive transistor output, ensuring reliable signal transmission while maintaining explosion protection. The unit incorporates line fault detection for enhanced system integrity.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2)
- COMPONENT TYPE: Intrinsic Safety Barrier / Proximity Switch Amplifier
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC
- INPUT: 1-channel for NAMUR proximity sensors or mechanical contacts
- OUTPUT 1: 1-channel relay output (changeover contact)
- OUTPUT 2: 1-channel passive transistor output (PNP/NPN selectable)
- SWITCHING FREQUENCY: Up to 5 kHz (transistor output)
- INTERFACE/CONTROL:
- SIGNAL CONVERSION: Converts hazardous area sensor signals to safe area discrete outputs
- DIAGNOSTICS: Line fault detection (LFD) for open/short circuit
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- MOUNTING: 35mm DIN rail mounting
- OPERATING TEMPERATURE: -20 °C to +60 °C
- COMPATIBILITY/APPLICATION:
- HAZARDOUS AREA CLASSIFICATION: Certified for intrinsic safety applications (e.g., ATEX, IECEx, UL)
- TARGET SYSTEMS: Process control systems, safety instrumented systems (SIS), industrial automation
- FUNCTION: Isolation and signal conditioning for sensors in Zone 0, 1, 2 (Gas) and Zone 20, 21, 22 (Dust) environments
- SAFETY INTEGRITY LEVEL: Suitable for applications up to SIL 2 (IEC 61508/61511)