PRODUCT DESCRIPTION
PEPPERL & FUCHS 70114050 - KFD2-SR2-EX1.W Series Switch Amplifier Isolated Barrier
This device functions as a two-channel switch amplifier and isolated barrier within the K-System, specifically engineered for intrinsic safety applications in hazardous areas. It provides galvanic isolation between the safe and hazardous areas, enabling the connection of NAMUR proximity sensors or mechanical contacts to control systems in the safe area. The unit integrates line fault detection and offers relay outputs for reliable signal transmission and safety interlocking.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2-SR2-EX1.W)
- COMPONENT TYPE: Switch Amplifier / Isolated Barrier
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35VDC (24VDC nominal)
- POWER CONSUMPTION: Approximately 1.5W per channel
- INPUT: 2 channels for NAMUR proximity sensors (EN 60947-5-6) or mechanical contacts
- OUTPUT: 2 potential-free relay outputs (SPDT, normally open/closed configurable)
- SWITCHING CAPACITY: Max. 250VAC/2A or 125VDC/2A (resistive load)
- INTERFACE/CONTROL:
- INPUT SIGNAL: NAMUR sensor (per EN 60947-5-6) or dry contact
- OUTPUT SIGNAL: Relay contact closure
- FAULT DETECTION: Line fault detection (wire break, short circuit) for input circuit
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- OPERATING TEMPERATURE: -20 to +60 °C
- MOUNTING: 35mm DIN rail
- TERMINALS: Screw terminals
- HAZARDOUS AREA CERTIFICATION: ATEX, IECEx, FM, cULus (for intrinsic safety applications up to Zone 0/20)
- COMPATIBILITY/APPLICATION:
- TARGET SYSTEMS: Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), Emergency Shutdown (ESD) systems
- SAFETY INTEGRITY LEVEL: Up to SIL 2 (IEC 61508/61511)
- APPLICATION: Intrinsic safety interface for process automation in chemical, oil & gas, pharmaceutical, and power generation industries.