PRODUCT DESCRIPTION
PEPPERL & FUCHS 801645 - KFD2-SR2-EX1.W.SM Isolated Barrier Switch Amplifier
This isolated barrier switch amplifier from the K-System KFD2 series provides intrinsic safety for signal circuits in hazardous areas. It interfaces NAMUR proximity sensors or mechanical contacts from Zone 0, 1, or 2 with safe area control systems, offering a single-channel relay output for reliable process control and safety interlocking. The unit incorporates line fault detection and is certified for applications up to Safety Integrity Level (SIL) 2.
Technical Specifications:
- SERIES/FAMILY: K-System, KFD2 Series
- COMPONENT TYPE: Isolated Barrier Switch Amplifier, Single Channel
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC (Nominal 24V DC)
- POWER CONSUMPTION: <= 1.5W
- INPUT: 1-channel for NAMUR sensors (EN 60947-5-6) or dry contacts from hazardous areas
- OUTPUT: 1 x Changeover Relay Contact (SPDT)
- SWITCHING CAPACITY: Max. 250V AC/DC, 2A, 500VA AC / 60W DC
- INTERFACE/CONTROL:
- SIGNAL INPUT: NAMUR sensor or mechanical contact
- SIGNAL OUTPUT: Potential-free relay contact
- INDICATORS: LED for power, switching state, and fault
- DIAGNOSTICS: Line fault detection (wire break, short circuit)
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals), IP40 (housing)
- MOUNTING: 35mm DIN rail mount
- OPERATING TEMPERATURE: -20 °C to +60 °C (-4 °F to +140 °F)
- EXPLOSION PROTECTION: ATEX, IECEx certified for Ex ia IIC T4 Ga/Gb
- COMPATIBILITY/APPLICATION:
- SAFETY INTEGRITY LEVEL: Up to SIL 2 (IEC 61508) / PL c (EN ISO 13849-1)
- TARGET APPLICATIONS: Process automation, chemical plants, oil & gas, pharmaceuticals, water/wastewater treatment
- FUNCTION: Interfacing intrinsically safe field devices (sensors, switches) with non-intrinsically safe control systems in safe areas