Pepperl+Fuchs KFA6-SR2-Ex1.W Switch Amplifiers Isolated Barriers
Description
The KFA6-SR2-Ex1.W is a robust 1-channel isolated barrier designed for intrinsic safety applications in industrial environments. It facilitates the secure transfer of digital signals from NAMUR sensors or mechanical contacts located in hazardous areas to safe areas. This model is powered by a 230 V AC supply, making it suitable for integration into a variety of Industrial Automation systems where reliable signal isolation and transmission are critical. The device is constructed with a polycarbonate housing, ensuring durability and resistance to environmental stresses such as dust and moisture. Its protection degree of IP20 makes it appropriate for indoor use in controlled environments. The KFA6-SR2-Ex1.W is designed to be mounted on a 35 mm DIN rail, adhering to EN 60715 standards, which simplifies installation and integration into existing infrastructure.
Features
The KFA6-SR2-Ex1.W features a form C changeover relay contact for the safe area load, offering flexibility in system design. It includes a removable terminal block with an integrated self-opening device, which simplifies installation and wiring while ensuring secure connections. The device operates within a temperature range of -20°C to 60°C, making it suitable for a wide range of environmental conditions. With a rated voltage of 207 to 253 V AC and a power consumption of ≤ 1 W, the KFA6-SR2-Ex1.W ensures energy efficiency without compromising performance. Its compact design allows for efficient use of space, making it an ideal solution for applications where panel space is limited. The device also supports line fault detection, which can be enabled or disabled via switch S3, enhancing operational safety and reliability.
Function
The primary function of the KFA6-SR2-Ex1.W is to transfer digital signals from hazardous areas to safe areas while maintaining galvanic isolation between the two. This ensures that any noise, potential differences, or transients from the hazardous area do not affect the safe area control circuits. The device uses a zener barrier in combination with a galvanic isolation network to limit the energy transmitted to the field, thereby ensuring intrinsic safety. In the event of a fault in the field circuit, the relays revert to their de-energized state, and the LEDs on the device indicate the fault according to NAMUR NE44 standards. This feature ensures quick identification and resolution of issues, minimizing downtime. The KFA6-SR2-Ex1.W is certified for use in hazardous locations, adhering to international safety standards and protocols, making it suitable for applications in oil and gas, chemical processing, pharmaceutical manufacturing, and other industries where intrinsic safety is a critical requirement.
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