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The PEPPERL & FUCHS 035845 (KFD2-SR2-EX1.W) is a K-System switch amplifier designed for intrinsic safety applications in hazardous environments. It provides galvanic isolation and signal conditioning for NAMUR sensors or mechanical contacts, driving two independent relay outputs in the safe area. This module is critical for implementing safety instrumented functions up to SIL 2 in process automation and control systems.
ELECTRICAL SPECS - SUPPLY VOLTAGE: 20 VDC to 35 VDC
ELECTRICAL SPECS - INPUT TYPE: NAMUR proximity switch (EN 60947-5-6) or dry contact
ELECTRICAL SPECS - OUTPUT TYPE: 2 x SPDT (Single Pole Double Throw) relay outputs
ELECTRICAL SPECS - SWITCHING CAPACITY AC: 250 VAC / 2 A / 500 VA (Resistive Load)
ELECTRICAL SPECS - SWITCHING CAPACITY DC: 125 VDC / 2 A / 60 W (Resistive Load)
INTERFACE/CONTROL - SIGNAL PROCESSING: Line fault detection (LFD) for open/short circuit, configurable operating modes
INTERFACE/CONTROL - INDICATORS: LEDs for operating state, input status, and fault conditions
ENVIRONMENTAL/MOUNTING - IP RATING: IP20
ENVIRONMENTAL/MOUNTING - MOUNTING: 35 mm DIN rail
ENVIRONMENTAL/MOUNTING - OPERATING TEMPERATURE: -20 °C to +60 °C
COMPATIBILITY/APPLICATION - HAZARDOUS AREA CLASSIFICATION: For intrinsically safe circuits in Zone 0, 1, 2 (gas) and Zone 20, 21, 22 (dust)
COMPATIBILITY/APPLICATION - SAFETY INTEGRITY LEVEL (SIL): Up to SIL 2 (IEC/EN 61508)
COMPATIBILITY/APPLICATION - PERFORMANCE LEVEL (PL): Up to PL c (EN ISO 13849-1)
COMPATIBILITY/APPLICATION - TARGET APPLICATIONS: Process automation, chemical processing, oil and gas, pharmaceutical manufacturing, water treatment, safety instrumented systems.
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