PRODUCT DESCRIPTION
PEPPERL & FUCHS 240647 - KFD2-SR2-EX1.W.LB Intrinsic Safety Barrier / Switch Amplifier
The PEPPERL & FUCHS 240647 (KFD2-SR2-EX1.W.LB) is a two-channel intrinsic safety barrier from the K-System series, designed for signal conditioning and galvanic isolation between hazardous and safe areas. It functions as a switch amplifier, accepting inputs from NAMUR sensors or dry contacts and providing relay outputs for control systems. This device is engineered for critical process automation applications requiring certified explosion protection and high functional safety.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2)
- COMPONENT TYPE: Intrinsic Safety Barrier, Switch Amplifier, 2-Channel
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC (Nominal 24V DC)
- INPUT TYPE: 2x NAMUR proximity sensor or dry contact (EN 60947-5-6 compliant)
- OUTPUT TYPE: 2x Relay (changeover contact, SPDT)
- SWITCHING CAPACITY: Max. 250V AC / 2A / 500VA Max. 125V DC / 2A / 60W
- INTERFACE/CONTROL:
- SIGNAL PROCESSING: Digital signal conditioning
- DIAGNOSTICS: Line fault detection (LFD), lead breakage monitoring
- CONFIGURATION: Selectable NO/NC operation via DIP switches
- ENVIRONMENTAL/MOUNTING:
- EXPLOSION PROTECTION: ATEX, IECEx, FM, cULus certified for hazardous areas (e.g., Zone 0, 1, 2 for gas Zone 20, 21, 22 for dust)
- SAFETY INTEGRITY LEVEL (SIL): Up to SIL 2 (IEC 61508/IEC 61511)
- DEGREE OF PROTECTION: IP20
- MOUNTING: 35mm DIN rail mounting
- OPERATING TEMPERATURE: -20 °C to +60 °C
- COMPATIBILITY/APPLICATION:
- TARGET SYSTEMS: Distributed Control Systems (DCS), Safety Instrumented Systems (SIS), Programmable Logic Controllers (PLC)
- INDUSTRIAL SECTORS: Chemical, petrochemical, oil & gas, pharmaceutical, food & beverage, water/wastewater treatment
- FUNCTIONAL ROLE: Provides intrinsically safe interface for field devices such as limit switches, proximity sensors, and emergency stop buttons in hazardous environments