PRODUCT DESCRIPTION
PEPPERL & FUCHS 818865 - KFD2-SR2-EX1.W.SM Safety Relay Module
The PEPPERL & FUCHS 818865 is a KFD2-SR2-EX1.W.SM safety relay module from the K-System, engineered for intrinsic safety applications in hazardous areas. It provides galvanic isolation and signal conditioning for two independent input channels from NAMUR sensors or mechanical contacts, driving two corresponding relay outputs for safe process control. This module is designed to achieve Safety Integrity Level 3, ensuring reliable operation in critical industrial environments.
Technical Specifications:
- SERIES/FAMILY: K-System, KFD2 Series
- COMPONENT TYPE: Safety Relay Module, Intrinsic Safety Barrier
- CHANNELS: Two independent input channels, two independent relay output channels
- INPUT SPECIFICATIONS: Compatible with NAMUR proximity sensors (EN 60947-5-6) or dry contacts located in hazardous areas. Input circuit rated for [Ex ia Ga] IIC, [Ex ib Gb] IIC, [Ex ia Da] IIIC, [Ex ib Db] IIIC.
- OUTPUT SPECIFICATIONS: Two normally open (NO) relay contacts per channel. Switching capacity up to 250 VAC / 2 A or 30 VDC / 2 A (resistive load).
- ELECTRICAL SPECS: 20-35 VDC nominal supply voltage (wide range). Power consumption typically 1.5 W.
- SAFETY RATING: Up to Safety Integrity Level (SIL) 3 according to IEC 61508, Performance Level (PL) e according to ISO 13849.
- INTERFACE/CONTROL: Screw terminals for power, input, and output connections. Front-panel LED indicators for power, input status, and output status.
- ENVIRONMENTAL/MOUNTING: 35 mm DIN rail mounting. IP20 protection rating. Operating temperature range -20 °C to +60 °C.
- COMPATIBILITY/APPLICATION: Designed for process automation in chemical, petrochemical, oil & gas, and pharmaceutical industries requiring intrinsically safe circuits for field devices in Zone 0, 1, 2 (gas) and Zone 20, 21, 22 (dust) hazardous areas.