Pepperl+Fuchs KFD2-STC5-Ex1 (70124109)

Overview

The Pepperl+Fuchs KFD2-STC5-Ex1 (Part No. 70124109) is a state-of-the-art 1-channel SMART Transmitter Power Supply meticulously engineered to deliver unparalleled safety and performance in critical industrial applications. This robust isolated barrier is specifically designed to energize and securely transmit analog signals from 2-wire SMART transmitters or current sources situated within hazardous environments. It expertly provides a loop-powered 4–20 mA active output, ensuring precise and stable signal delivery. Crucially, the KFD2-STC5-Ex1 fully supports HART bidirectional communication, facilitating seamless digital integration and advanced diagnostics with intelligent field devices. Its primary function is to guarantee safe and integrity-preserved signal transmission from hazardous locations to control systems residing in the safe area, thereby protecting personnel and processes.

With its certification for SIL 2 (Systematic Capability SC 3) in accordance with the stringent IEC/EN 61508 standard, this device stands as an ideal choice for safety-instrumented systems (SIS) in various process automation sectors. The KFD2-STC5-Ex1 further enhances system reliability through its superior 3-way galvanic isolation, effectively preventing ground loops and improving signal integrity. Its compact 20 mm width allows for efficient space utilization, and it is designed for convenient DIN rail mounting, making installation straightforward and flexible in any control cabinet.

Key Features

• Part Number: 70124109 – Ensures precise model identification and ordering.
• 1-Channel Isolated Barrier: Provides robust isolation and signal conditioning for a single input channel, optimizing space.
• Input Compatibility: Seamlessly interfaces with 2-wire SMART transmitters or current sources located in hazardous areas.
• Active 4–20 mA Loop Output: Delivers a reliable and standardized current signal to control systems.
• Power Supply: Operates efficiently on a 24 V DC nominal supply (with a wide 20–30 V range), ensuring stable functionality.
• HART Compatible: Full support for HART protocol enables digital communication, remote configuration, and device diagnostics.
• SIL 2 Certified (SC 3): Meets high functional safety requirements according to IEC/EN 61508 for critical applications.
• 3-Way Galvanic Isolation: Provides isolation between input, output, and power, enhancing signal integrity and system protection.
• DIN Rail Mountable: Facilitates quick and secure installation within control cabinets thanks to its compact 20 mm housing.
• LED Status Indicators: Clear visual feedback for power, fault, and operational status, simplifying troubleshooting.
• IP20 Protection: Suitable for installation in safe areas, ensuring protection against solid objects larger than 12.5 mm.

Technical Specifications

• Model: KFD2-STC5-Ex1
• Part No.: 70124109
• Input Signal: 4–20 mA from 2-wire transmitters
• Output Signal: Active 4–20 mA
• Voltage Supply: 20 to 30 V DC
• Isolation Voltage: 375 V AC (test voltage)
• Mounting Type: DIN rail (according to EN 60715)
• Housing Width: 20 mm
• Operating Temperature Range: –20 °C to +60 °C
• Protection Rating: IP20
• Signal Type: Analog with HART passthrough capability
• Safety Compliance: SIL 2 / SC 3 (certified to IEC/EN 61508)
• Certifications: ATEX, IECEx, UL, CSA (specific certifications may vary by variant)

Applications

• Process Automation: Provides a reliable and isolated analog signal interface for critical process control loops.
• Chemical & Oil Industries: Essential for safe signal transmission from hazardous areas, ensuring compliance and operational continuity.
• Water & Wastewater Facilities: Ideal for integrating remote transmitters and maintaining signal integrity in challenging environments.
• Pharmaceutical Plants: Guarantees functional safety and precision control for sensitive and regulated processes.
• DCS/PLC Integration: Fully compatible with standard analog input cards of Distributed Control Systems (DCS) and Programmable Logic Controllers (PLCs).
• Explosion Protection: Certified for use in intrinsic safety applications within potentially explosive atmospheres.

Why Choose This Model?

The Pepperl+Fuchs KFD2-STC5-Ex1 (70124109) stands out as a superior choice for any industrial application demanding uncompromised safety and signal integrity. Its proven SIL 2 certification provides peace of mind, affirming its suitability for safety-instrumented functions and critical control paths. With full HART compatibility, this SMART Transmitter Power Supply ensures that you can leverage the full diagnostic and configuration capabilities of your intelligent field devices, reducing maintenance time and improving operational efficiency. As a product from Pepperl+Fuchs, a world leader in industrial sensor technology and intrinsic safety, you are guaranteed exceptional performance and reliability, even in the most demanding and harsh environments. Its compact design facilitates easy installation, saving valuable cabinet space, while its low maintenance requirements contribute to a lower total cost of ownership. Choose the KFD2-STC5-Ex1 for a solution that combines advanced technology, robust safety features, and trusted brand quality.

Order Now

Secure the integrity and safety of your industrial processes with the Pepperl+Fuchs KFD2-STC5-Ex1 (70124109) SMART Transmitter Power Supply. This essential component is currently available and ready to ship, ensuring prompt delivery to meet your project deadlines. Enhance your operational efficiency and compliance by integrating this high-performance, SIL 2 certified isolated barrier into your system today. Contact us now to place your order or to learn more about how this advanced solution can benefit your specific application needs.