PRODUCT DESCRIPTION
PEPPERL & FUCHS 253994 - K-System Intrinsically Safe Switch Amplifier
The PEPPERL & FUCHS 253994 (KFD2-SR2-EX1.W.LB) is a 2-channel intrinsically safe switch amplifier from the K-System series, engineered for reliable signal conditioning between hazardous area sensors and safe area control systems. It provides galvanic isolation, supports NAMUR sensors or mechanical contacts, and integrates line fault detection to ensure operational integrity and compliance with intrinsic safety standards in critical process automation environments.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2)
- COMPONENT TYPE: Intrinsically Safe Switch Amplifier / Isolated Barrier
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC
- INPUT: 2-channel, for NAMUR sensors or potential-free contacts (hazardous area)
- OUTPUT: 2-channel relay output, changeover contacts (SPDT)
- SWITCHING CAPACITY: 250V AC / 2A / 500VA 40V DC / 2A / 80W (resistive load)
- POWER CONSUMPTION: 1.5W at 24V DC (typical)
- INTERFACE/CONTROL:
- INPUT SIGNAL TYPE: NAMUR (EN 60947-5-6) or dry contact
- OUTPUT SIGNAL TYPE: Potential-free relay contacts
- DIAGNOSTICS: Line fault detection (LFD) for open/short circuit, LED status indicators
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- MOUNTING: 35 mm DIN rail
- OPERATING TEMPERATURE: -20 °C to +60 °C
- SAFETY CERTIFICATION: ATEX, IECEx (Ex ia IIC), SIL 2/3 capable
- COMPATIBILITY/APPLICATION: Process automation, chemical and petrochemical industries, oil & gas, pharmaceutical manufacturing, power generation, and other hazardous area applications requiring intrinsic safety barriers.