PRODUCT DESCRIPTION
PEPPERL & FUCHS 248764 - K-System 2-Channel Intrinsic Safety Barrier Switch Amplifier
The PEPPERL & FUCHS KFD2-SR2-EX1.W is a K-System intrinsic safety barrier, specifically a 2-channel switch amplifier, engineered to provide galvanic isolation and energy limitation for signals originating from hazardous area field devices. It enables the safe interface of NAMUR proximity sensors or mechanical contacts located in Zone 0, 1, or 2 with safe area control systems, ensuring compliance with intrinsic safety standards for process automation applications.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2)
- COMPONENT TYPE: Intrinsic Safety Barrier, 2-Channel Switch Amplifier
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC
- POWER CONSUMPTION: <= 1.5W at 24V DC
- OUTPUT TYPE: 2x Relay (changeover contact)
- SWITCHING CAPACITY: Max. 250V AC / 2A Max. 125V DC / 2A
- INPUT TYPE: 2x NAMUR sensor (EN 60947-5-6) or dry contact
- INTERFACE/CONTROL:
- SIGNAL INPUT: NAMUR proximity sensors or mechanical contacts from hazardous area
- SIGNAL OUTPUT: Potential-free relay contacts to safe area
- DIAGNOSTICS: Line fault detection (LFD) for open and short circuit
- ENVIRONMENTAL/MOUNTING:
- HAZARDOUS AREA CLASSIFICATION: Ex ia IIC T4 Ga/Gb (for input circuit)
- SAFETY INTEGRITY LEVEL (SIL): Up to SIL 2 (IEC 61508)
- OPERATING TEMPERATURE: -20 °C to +60 °C
- PROTECTION RATING: IP20
- MOUNTING: 35mm DIN rail
- COMPATIBILITY/APPLICATION:
- TARGET SYSTEMS: Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), Emergency Shut-down (ESD) systems
- APPLICATIONS: Process automation in chemical, petrochemical, pharmaceutical, and oil & gas industries for monitoring switches and proximity sensors in hazardous locations.