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This K-System safety relay switch amplifier provides intrinsic safety isolation and signal conditioning for two-channel applications in hazardous areas. It is engineered for monitoring NAMUR sensors or mechanical contacts, delivering reliable switching outputs for safety instrumented systems. The module integrates line fault detection and is certified for use in safety applications up to SIL 2 and PL c.
Technical Specifications:
SERIES/FAMILY: K-System, KFD2-SR2-EX1.W.SM
COMPONENT TYPE: Switch Amplifier / Safety Relay
ELECTRICAL SPECS:
SUPPLY VOLTAGE: 20-35V DC (24V DC nominal)
POWER CONSUMPTION: 1.5W at 24V DC
INPUT: 2-channel for NAMUR sensors (EN 60947-5-6) or dry contacts
INPUT SIGNAL: NAMUR proximity switch or potential-free contact
OUTPUT SIGNAL: Potential-free relay contact
FUNCTIONALITY: Line fault detection (open/short circuit) for input lines
OPERATING MODE: Configurable for normally open or normally closed input logic
ENVIRONMENTAL/MOUNTING:
IP RATING: IP20
OPERATING TEMPERATURE: -20 to +60 °C (-4 to +140 °F)
MOUNTING: 35mm DIN rail
HAZARDOUS AREA CERTIFICATION: ATEX, IECEx for Zone 2 (Ex nA [ia Ga] IIC T4 Gc)
COMPATIBILITY/APPLICATION:
SAFETY INTEGRITY LEVEL (SIL): Up to SIL 2 (IEC 61508)
PERFORMANCE LEVEL (PL): Up to PL c (EN ISO 13849-1)
TARGET APPLICATIONS: Emergency shutdown (ESD) systems, fire and gas (F&G) systems, process control in hazardous environments, safety-related sensor monitoring.
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