ОПИСАНИЕ ПРОДУКТА
PEPPERL & FUCHS 304837 - K-System Isolated Barrier, NAMUR Input to Relay Output
The PEPPERL & FUCHS 304837 is a K-System isolated barrier engineered for intrinsic safety applications in hazardous areas. It functions as a single-channel switch amplifier, converting signals from NAMUR proximity sensors or mechanical contacts located in Zone 0, 1, or 2 into a safe, galvanically isolated relay output for control systems. This module provides reliable signal conditioning and line fault detection, essential for process automation and safety instrumented systems.
Technical Specifications:
- SERIES/FAMILY: K-System (KFD2-CD-EX1.PN)
- COMPONENT TYPE: Isolated Barrier, Switch Amplifier
- ELECTRICAL SPECS:
- SUPPLY VOLTAGE: 20-35V DC (via power rail or terminals)
- POWER CONSUMPTION: Approximately 1.5W
- INPUT: 1-channel NAMUR sensor (EN 60947-5-6) or dry contact
- OUTPUT: 1-channel SPDT (changeover) relay
- RELAY SWITCHING CAPACITY: Max. 250V AC / 125V DC, 2A (resistive load)
- INTERFACE/CONTROL:
- FUNCTION: Signal conversion and galvanic isolation
- DIAGNOSTICS: Line fault detection (LFD) for sensor open/short circuit
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20
- OPERATING TEMPERATURE: -20 to +60 °C
- MOUNTING: 35mm DIN rail
- HAZARDOUS AREA CERTIFICATION: ATEX, IECEx for [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
- COMPATIBILITY/APPLICATION:
- TARGET SYSTEMS: Process control systems (DCS, PLC), safety instrumented systems (SIS)
- APPLICATIONS: Position detection, limit switching, level monitoring in hazardous locations