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Pepperl+Fuchs KFD2-SR2-Ex1.W
by Pepperl+Fuchs
Read verified buyer reviews ↓OverviewThe Pepperl+Fuchs KFD2-SR2-Ex1.W is a sophisticated single-channel isolated barrier switch amplifier, meticulously engineered to facilitate the secure and reliable transmission of digital signals from potentially explosive industrial settings to control systems located in safe zones. This robust device seamlessly integrates with NAMUR sensors or dry contacts, delivering a dependable relay contact output that adheres to the stringent requirements of SIL 2 compliance, as stipulated by IEC 61508 standards. Its advanced functionalities, including integrated line fault detection (LFD) and user-configurable operation modes, render it an essential component for safety-critical applications and advanced process automation systems that demand exceptional precision in monitoring and diagnostics. With the KFD2-SR2-Ex1.W, you gain a foundational element for operational safety and enhanced efficiency.Key Features NAMUR Sensor & Dry Contact Input: Engineered for adaptability, this amplifier supports a broad spectrum of NAMUR sensors and dry contacts, allowing for effortless integration with existing instrumentation in hazardous areas. Reliable Relay Output: Equipped with a robust Form C (changeover contact) relay, it offers substantial switching capacity, ensuring consistent control and signal transmission. Integrated Line Fault Detection (LFD): Boost system dependability with automatic monitoring for open and short circuits, proactively identifying and signaling potential malfunctions. SIL 2 Certified: Achieve superior safety integrity with certification to Safety Integrity Level 2, fully compliant with IEC 61508 and IEC 61511 standards, making it suitable for critical applications. Flexible Power Supply Options: Adaptable to diverse power infrastructures, it can be powered by 24 V DC via a Power Rail or through convenient terminal connections. Comprehensive Status Indicators: Intuitive LED indicators provide immediate visual feedback on relay status, power, and fault diagnostics, simplifying troubleshooting and operational oversight. Reversible Output Logic: Customize the device's behavior to specific application demands with configurable output logic via a DIP switch, enabling both Light and Dark operation modes. Technical Specifications Input Type: NAMUR sensor or dry contact Open Circuit Voltage: Approximately 8 V DC Short-Circuit Current: Approximately 8 mA Switching Thresholds: ON > 2.1 mA / OFF < 1.2 mA Output Type: Relay, SPDT (Form C), contact rating: 253 V AC / 2 A (cos φ > 0.7) | 40 V DC / 2 A (resistive load) Minimum Switch Current: 2 mA at 24 V DC Response Time: Approximately 20 ms Supply Voltage: 19–30 V DC Power Consumption: ≤ 0.9 W Mounting Type: DIN Rail (EN 60715) Operating Temperature: -20 °C to +60 °C Enclosure Rating: IP20 Dimensions: 20 mm (W) × 119 mm (H) × 115 mm (D) Indicators: Green (power), Yellow (relay), Red (LFD) Applications Process Control Systems: Crucial for interfacing field devices in hazardous environments with Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), ensuring reliable data flow and control. Chemical & Oil Industry: An indispensable component in ATEX-certified and intrinsically safe loop installations, providing critical signal isolation and integrity in volatile environments. SIL 2 Safety Loops: Optimized for use in Emergency Shutdown (ESD) signal routing and other safety instrumented systems requiring Safety Integrity Level 2 compliance. Automation Panels: Delivers dependable relay output from signals originating in hazardous zones, vital for automated processes and machinery control. Why ChooseThe Pepperl+Fuchs KFD2-SR2-Ex1.W stands out as a superior choice for numerous reasons. It offers exceptional signal isolation and transfer capabilities from perilous areas, safeguarding your control systems and personnel. The integrated diagnostics and clear status indicators facilitate rapid and efficient troubleshooting, minimizing downtime and maintenance efforts. With its SIL 2 certification, you gain the assurance of uncompromising safety integrity.Order NowElevate your industrial safety and control systems with the Pepperl+Fuchs KFD2-SR2-Ex1.W. Contact us today to place your order and ensure the highest standards of reliability and performance in your operations.FAQWhat is the primary function of the Pepperl+Fuchs KFD2-SR2-Ex1.W?Its primary function is to securely transmit digital signals from hazardous industrial environments to control systems in safe areas, using a 1-channel isolated barrier switch amplifier.Is this device suitable for safety-critical applications?Yes, it is SIL 2 certified according to IEC 61508, making it highly suitable for safety-critical applications.What types of inputs does the KFD2-SR2-Ex1.W accept?It accepts inputs from NAMUR sensors and dry contacts, offering versatile integration options.Does it have fault detection capabilities?Yes, it features integrated Line Fault Detection (LFD) for automatic monitoring of open and short circuits, enhancing system reliability.Can the output logic be adjusted?Yes, the output logic is reversible and can be configured via a DIP switch to suit specific application needs, supporting both Light and Dark operation modes.
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Pepperl+Fuchs KFD2-SR2-Ex1.W
Overview
This is a genuine Pepperl+Fuchs component from the Isolators & Barriers family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Pepperl+Fuchs catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Pepperl+Fuchs automation ecosystem
- Engineered to integrate inside Isolators & Barriers installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Pepperl+Fuchs equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Pepperl+Fuchs catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Pepperl+Fuchs platform with documented conversion notes for the Isolators & Barriers family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Input Type: NAMUR sensor or dry contact
- Open Circuit Voltage: Approximately 8 V DC
- Short-Circuit Current: Approximately 8 mA
- Switching Thresholds: ON > 2.1 mA / OFF < 1.2 mA
- Output Type: Relay, SPDT (Form C), contact rating: 253 V AC / 2 A (cos φ > 0.7) | 40 V DC / 2 A (resistive load)
- Minimum Switch Current: 2 mA at 24 V DC
- Response Time: Approximately 20 ms
- Supply Voltage: 19–30 V DC
- Power Consumption: ≤ 0.9 W
- Mounting Type: DIN Rail (EN 60715)
- Operating Temperature: -20 °C to +60 °C
- Enclosure Rating: IP20
- Dimensions: 20 mm (W) × 119 mm (H) × 115 mm (D)
- Indicators: Green (power), Yellow (relay), Red (LFD)
Applications
- Process Control Systems: Crucial for interfacing field devices in hazardous environments with Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), ensuring reliable data flow and control.
- Chemical & Oil Industry: An indispensable component in ATEX-certified and intrinsically safe loop installations, providing critical signal isolation and integrity in volatile environments.
- SIL 2 Safety Loops: Optimized for use in Emergency Shutdown (ESD) signal routing and other safety instrumented systems requiring Safety Integrity Level 2 compliance.
- Automation Panels: Delivers dependable relay output from signals originating in hazardous zones, vital for automated processes and machinery control.
Why Choose the KFD2-SR2-Ex1.W?
The Pepperl+Fuchs KFD2-SR2-Ex1.W stands out as a superior choice for numerous reasons. It offers exceptional signal isolation and transfer capabilities from perilous areas, safeguarding your control systems and personnel. The integrated diagnostics and clear status indicators facilitate rapid and efficient troubleshooting, minimizing downtime and maintenance efforts. With its SIL 2 certification, you gain the assurance of uncompromising safety integrity.
Availability & Shipping
- ▸In stock: KFD2-SR2-Ex1.W ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every KFD2-SR2-Ex1.W ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Pepperl+Fuchs
Machine down? We ship parts the same day.
New, surplus, and refurbished Pepperl+Fuchs inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.