Description
Pepperl+Fuchs KFD2/STC4/EX1
It is a 1-channel isolated intrinsically safe barrier (SMART Transmitter Power Supply) launched by Pepperl+Fuchs, designed to power 2-wire or 3-wire SMART transmitters and 2-wire SMART current sources in hazardous areas (ExZone2/Division2).
Key Technical Features
| Feature | Description |
|---|---|
| Power Supply | 24 V DC (Power Rail), rated 20 ~ 35 V DC, power consumption about 1.5 ~ 1.9 W |
| Channels | Single‑channel (1 Channel) |
| Input/Output | Both input and output are 0/4 ~ 20 mA current loops, supporting loads up to 0 ~ 800 Ω |
| Intrinsic Safety Level | SIL 2 (IEC 61508 compliant); can reach SIL 3 in redundant configurations |
| Frequency Response | Up to 7.5 kHz (‑3 dB) |
| Isolation & Protection | Electrically isolated output; internal 250 Ω (or 274 Ω) resistor can serve as HART communication impedance |
| Communication Protocols | Supports HART (digital overlay); some versions are compatible with BRAIN, Foxboro |
| Mounting | DIN 35 mm rail‑mountable, equipped with standard terminal block (1+, 2‑, 3, 5‑, 6+, 7‑, 8+, 9) |
| Environmental Ratings | Operating temperature –20 ~ +60 °C, protection class IP20, compliant with EN 61326‑1, NE 21, etc. |
| Safety Functions | Energy‑limiting Zener barrier + electrical isolation to prevent ignition in hazardous zones, simplifying Ex‑i circuit maintenance |
Typical Applications
- Process control in hazardous zones: Provides safe power to 2‑wire/3‑wire SMART transmitters (e.g., pressure, temperature, flow) and isolates the analog signal for transmission to a safe area.
- Intrinsic safety system integration: Can be combined with P+F’s safety barrier families (K, H series) as well as Power Rail, UPR‑03, KFD2‑EB2, etc., to create large‑scale safe‑signal networks.
- HART communication: When loop impedance is insufficient, the built‑in 250 Ω (or 274 Ω) resistor can raise HART communication impedance, ensuring reliable digital overlay.
Main Advantages
- High safety rating: SIL 2 certified; redundancy can elevate it to SIL 3, meeting stringent intrinsic‑safety requirements.
- Comprehensive isolation: Energy‑limiting barrier plus electrical isolation guarantees strict energy restriction between hazardous and safe zones.
- Flexible wiring and compatibility: Standard DIN rail mounting and a rich terminal layout support a wide range of SMART transmitters and communication protocols.
- Broad frequency response: 7.5 kHz bandwidth accommodates high‑speed process signals.
In short, the KFD2‑STC4‑Ex1 is a highly reliable, internationally‑standard‑compliant isolated power barrier for industrial automation, process control, and intrinsic‑safety systems, capable of safely and accurately powering and transmitting analog/digital signals in hazardous environments.
Sales of the brand:
ABB、EPRO、GE、FOXBORO、Schneider、Rexroth、Honeywell、Bently、YASKAWA other global DCS system and PLC system, servo system of famous industrial brand.
☀️Tara(Sales Director)
📞Tel: + 86-13806028623
📮Whatsapp:+86-13806028623
💬Email: ydf8801@163.com
🏚️Ship to you via DHL/TNT/UPS/EMS/Fedex
🥇Product Condition: One-year warranty
Company Overview
Main Products
We specialize in supplying original imported spare parts for DCS, PLC, robotics, and large servo systems from leading global brands, including:
- FOXBORO | EMERSON | TRICONEX | XYCOM | BENTLY
- ROCKWELL | ABB | GE | Aen-Brady | YOKOGAWA
- HONEYWELL | RELIANCE | SCHNEIDER | MODICON
- Westinghouse | WOODWARD | Motorola | Rexroth | SEW
Our inventory includes authentic, brand-new components, including hard-to-find discontinued parts, ensuring reliable solutions for industrial automation needs.
Quick delivery of spot goods and quality assurance – your trusted purchasing partner!
🔥 Spot inventory, same day shipment
All products are in sufficient stock reserve. After you place an order, we will arrange shipment on the same day to minimize waiting time and help your project progress quickly.
💳 Flexible payment, easy transaction
Support multiple payment methods, including mainstream settlement methods such as T/T, which are safe and convenient, meet the needs of different customers, and make cross-border transactions more worry free.
🛡️ One year warranty, worry free after-sales service
We offer a one-year warranty service for all products! If there are any quality issues, we will provide you with professional after-sales support as soon as possible and provide full protection throughout the process.
🚚 Global express delivery, secure delivery
We have deep cooperation with well-known domestic and foreign logistics companies such as SF Express, DHL, FEDEX, etc., to ensure that every shipment can be safely, timely, and efficiently delivered, allowing you to receive your goods without worry.
📞 24/7 customer service, online response
You can contact us anytime and anywhere through WeChat, Skype, WhatsApp, LINE, or email. Our professional team will be available 24 hours a day to answer your questions and provide attentive service.
Choosing us means choosing speed, quality, and trust!
Contact us immediately to embark on a new experience of efficient procurement! 📦✨
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