Pepperl+Fuchs KFD2-STC4-Ex2

Overview

The Pepperl+Fuchs KFD2-STC4-Ex2 is a cutting-edge 2-channel isolated barrier, meticulously engineered to provide a robust and reliable power supply for 2-wire SMART transmitters operating in demanding and hazardous environments. Designed for superior performance in intrinsically safe applications, this device efficiently transfers analog input signals from the hazardous area to the safe area, converting them into precise, isolated current values. Its advanced bidirectional communication capabilities seamlessly support widely used protocols such as HART, BRAIN, and Foxboro, ensuring complete system integration and data exchange. Furthermore, the KFD2-STC4-Ex2 is SIL 2 certified in accordance with IEC/EN 61508, underscoring its exceptional reliability and making it an ideal choice for critical safety instrumented systems where precision and dependability are paramount.

Key Features

• Signal Type: Analog input, optimized for industrial control systems.
• Input Compatibility: Specifically designed for 2-wire SMART transmitters, ensuring broad compatibility.
• Output: Highly accurate 0/4–20 mA current output for versatile integration.
• Power Supply: Flexible 20–35 V DC power input via Power Rail or terminals 14+, 15-.
• Load Resistance: Supports a load resistance range of 0–550 Ω at 20 mA.
• Integrated Test Points: Features terminals with test sockets, facilitating easy connection for HART communicators.
• Safety Certification: SIL 2 certified (IEC/EN 61508) for use in safety-critical applications.
• Mounting: Designed for convenient 35 mm DIN rail mounting (EN 60715).
• Housing Dimensions (W×H×D): Compact 20 × 124 × 115 mm design to optimize cabinet space.
• Protection Class: IP20 rated, providing protection against solid objects.
• Part Number: 283699, ensuring easy identification and ordering.

Technical Specifications

• Input Signal: Precise 0/4–20 mA input.
• Available Voltage: ≥16 V at 20 mA, critical for stable operation.
• Output Signal: Accurate 0/4–20 mA (with overload protection >25 mA).
• Ripple: Minimal ripple of max. 50 µA rms, ensuring clean signal transmission.
• Transfer Accuracy: Exceptional accuracy with ≤10 µA deviation at 20 °C.
• Temperature Influence: Low temperature influence of ≤0.25 µA/K, maintaining performance in varying conditions.
• Frequency Range:
  • Field side to control side: 0–7.5 kHz (-3 dB)
  • Safe area to hazardous area: 0.3–7.5 kHz (-3 dB)
• Settling Time: Fast settling time of 200 µs for rapid response.
• Rise/Fall Time: Swift rise/fall time of 20 µs for dynamic signal changes.
• Galvanic Isolation:
  • Output/Power Supply: Functional insulation, 50 V AC
  • Output/Output: Functional insulation, 50 V AC
• Ambient Temperature Range: Robust operational range from -20 °C to +60 °C.
• Weight: Lightweight design at approximately 150 g.

Approvals and Certifications:

• ATEX: II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I
• IECEx: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
• UL: cULus Listed
• CE: EN 61326-1:2013 (industrial locations)
• UKCA: Certified

Applications

The Pepperl+Fuchs KFD2-STC4-Ex2 is a versatile solution, perfectly suited for a wide array of industrial applications requiring reliable power and signal conditioning for SMART transmitters in hazardous areas. Its robust design and comprehensive certifications make it an indispensable component in:

• Process Automation Systems: Enhancing control and safety in complex industrial processes.
• Chemical and Petrochemical Industries: Providing secure operation in volatile environments.
• Oil and Gas Facilities: Ensuring dependable data acquisition and control in challenging conditions.
• Pharmaceutical Manufacturing: Meeting stringent safety and accuracy requirements for critical processes.
• Water and Wastewater Treatment Plants: Facilitating reliable monitoring and control in demanding utility operations.

Why Choose This Model?

Opting for the Pepperl+Fuchs KFD2-STC4-Ex2 means investing in unparalleled reliability, safety, and performance for your critical applications. This model stands out due to several key advantages:

• Intrinsic Safety: Engineered for seamless deployment in hazardous areas, backed by a comprehensive suite of international certifications, ensuring maximum protection for personnel and equipment.
• High Accuracy: Guarantees precise signal transmission with minimal deviation, crucial for maintaining optimal process control and data integrity.
• Galvanic Isolation: Superior galvanic isolation safeguards your control systems from potential faults originating in the field, enhancing overall system stability and longevity.
• Compact Design: Its ultra-slim housing is designed for efficient space utilization within control cabinets, allowing for more compact installations and reducing overall footprint.
• Easy Configuration: Simplifies setup and mode selection through intuitive DIP switches, enabling quick deployment and reducing installation time and effort.
• Bi-directional Communication: Full support for industry-standard protocols like HART, BRAIN, and Foxboro, facilitating effortless integration and comprehensive diagnostic capabilities.

Order Now

Enhance the safety, reliability, and precision of your industrial operations by integrating the Pepperl+Fuchs KFD2-STC4-Ex2 into your system. With its advanced features, robust certifications, and proven performance, it is the ideal choice for powering SMART transmitters in hazardous locations. Contact us today or refer to part number 283699 to place your order and secure a solution that delivers peace of mind and operational excellence.