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Pepperl+Fuchs KFD2-ST3-Ex2

by Pepperl+Fuchs

OverviewThe Pepperl+Fuchs KFD2-ST3-Ex2 is a robust 2-channel isolated barrier engineered to facilitate the secure transmission of digital signals from hazardous industrial environments to safe area control systems. This essential device seamlessly integrates with NAMUR sensors or dry contacts, ensuring both data integrity and operational safety in demanding settings. Each channel incorporates an active transistor output, guaranteeing precise and reliable signal communication. A cornerstone of its design is the comprehensive galvanic isolation implemented between the input, output, and power supply, effectively mitigating electrical interference and bolstering overall system protection. The KFD2-ST3-Ex2 features advanced line fault detection (LFD) capabilities, proactively identifying issues such as lead breakage and short-circuit conditions. Its reversible operational mode, easily configured via DIP switches, offers exceptional flexibility to adapt to a variety of application requirements. Furthermore, this switch amplifier holds SIL 2 certification in accordance with IEC/EN 61508, highlighting its commitment to high reliability and adherence to stringent safety standards for critical operations.Key Features Input Versatility: Compatible with both dry contacts and NAMUR sensors, offering wide application suitability. Dual Channel Design: Provides two independent channels for efficient signal processing. Active Transistor Output: Ensures stable and dependable signal switching. Superior Isolation: Features galvanic isolation across input, output, and power supply for enhanced safety and reduced interference. Advanced Diagnostics: Integrated Line Fault Detection (LFD) for rapid identification of wiring issues, including lead breakage and short-circuits. Configurable Operation: Reversible mode of operation via DIP switches allows for application-specific customization. Safety Certified: SIL 2 certified as per IEC/EN 61508, guaranteeing high integrity in safety instrumented systems. Compact and Durable: Housed in a slim 20 mm enclosure with IP20 protection, perfectly suited for DIN rail mounting. Broad Operating Temperature: Functions dependably in ambient temperatures ranging from -20 °C to +60 °C. Global Compliance: Multiple approvals, including ATEX, IECEx, UL, CE, and UKCA, ensure suitability for international markets. Flexible Powering: Operates on 19–30 V DC via Power Rail or dedicated terminals. Technical Specifications Signal Type: Digital Input Input Connections: Terminals 1+, 2+, 3- (Channel I); 4+, 5+, 6- (Channel II) Output Connections: Output I: terminal 7+; Output II: terminal 9+ Open Circuit Voltage/Short-Circuit Current: Approximately 10 V DC / approximately 8 mA Switching Point/Hysteresis: 1.2–2.1 mA / approximately 0.2 mA Line Fault Detection (LFD) Thresholds: Breakage: I ≤ 0.1 mA; Short-Circuit: I ≥ 6.5 mA Response Time: ≤200 µs Switching Frequency: ≤5 kHz Rated Output Voltage: 30 V DC Rated Output Current: 100 mA Signal Level (Output): 1-Signal: (Supply voltage) - 3 V max. for 100 mA; 0-Signal: Blocked output (off-state current ≤10 µA) Galvanic Isolation: Input/Output and Input/Power Supply: Reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff Indicators: LEDs for power supply, output status, and line fault alerts Configuration: DIP switches located on the device Mounting: 35 mm DIN rail (EN 60715) Dimensions (W×H×D): 20 × 119 × 115 mm Protection Class: IP20 Ambient Temperature Range: -20 °C to +60 °C Weight: Approximately 150 g Part Number: 262111 Applications Process Automation Systems: Essential for dependable signal transfer in sophisticated control loops. Chemical and Petrochemical Industries: Designed to meet the stringent safety requirements of potentially explosive atmospheres. Oil and Gas Facilities: Ensures secure operation and monitoring in both onshore and offshore environments. Pharmaceutical Manufacturing: Crucial for maintaining safety and operational integrity in sensitive production processes. Water and Wastewater Treatment Plants: Provides reliable signal isolation in critical infrastructure. Why Choose the Pepperl+Fuchs KFD2-ST3-Ex2?Opting for the Pepperl+Fuchs KFD2-ST3-Ex2 means investing in an isolated barrier that prioritizes safety, reliability, and versatility. Its SIL 2 certification assures integrity in critical safety instrumented systems, while advanced features like line fault detection minimize downtime and enhance diagnostic capabilities. The compact design and broad operating temperature range make it suitable for diverse industrial settings. With global compliance and flexible configuration options, this device offers a robust solution for securing digital signal transmission in hazardous areas.Order NowEnhance the safety and efficiency of your industrial operations. Purchase the Pepperl+Fuchs KFD2-ST3-Ex2 today to ensure reliable signal transfer in challenging environments.FAQWhat is the primary function of the Pepperl+Fuchs KFD2-ST3-Ex2?Its primary function is to safely transfer digital signals from hazardous locations to safe area control systems while providing galvanic isolation and line fault detection.What types of inputs are compatible with this device?The KFD2-ST3-Ex2 is compatible with both NAMUR sensors and dry contacts.What does SIL 2 certified mean for this product?SIL 2 certification according to IEC/EN 61508 signifies that the device meets high safety integrity levels for use in critical safety instrumented systems.How is the operating mode configured?The operating mode is easily configured using DIP switches located on the device.What are the benefits of galvanic isolation?Galvanic isolation enhances safety by preventing electrical interference between the input, output, and power supply, thereby protecting the overall system.

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