Pepperl+Fuchs KFD2-CR4-1.20 | Signal Isolator & Transmitter Power Supply | Industrial Automation 2025/2026
Pepperl+Fuchs KFD2-CR4-1.20: High-Precision Signal Isolator for Industrial & Hazardous Zones
Published: • By Dutch Marine Supply
The :content Reference is a high-accuracy signal isolator and transmitter power supply designed to provide galvanic isolation for analog signals in industrial and hazardous area installations. It’s ideal when dealing with 2-wire or 3-wire transmitters and needs high integrity signal transmission.
🔧 Key Features & Specifications
- Single channel signal conditioner with 24 V DC supply (Power Rail) :contentReference[oaicite:2]{index=2}
- Accepts 0/4-20 mA input and generates **dual isolated outputs** of 0/4-20 mA :contentReference[oaicite:3]{index=3}
- High accuracy: ≤ 0.1 % typical error :contentReference[oaicite:4]{index=4}
- SIL3 capable according to IEC 61508 (for safety applications) :contentReference[oaicite:5]{index=5}
- Minimum field voltage: 16 V at 20 mA :contentReference[oaicite:6]{index=6}
- Compact DIN-rail capable form factor, with removable terminals for ease of wiring :contentReference[oaicite:7]{index=7}
- Supports signal splitting (one input, two outputs) for redundancy or parallel circuits :contentReference[oaicite:8]{index=8}
🏭 Applications & Use Cases
This isolator is suited for many industrial scenarios, including:
- Isolating and transmitting analog signals (4-20 mA) from field sensors or transmitters to control systems
- Use in zones requiring galvanic isolation between hazardous and non-hazardous areas
- Redundant or split signal feeding into multiple receivers
- Safety systems or functional safety loops (because of SIL3 rating)
- Retrofit of existing control loops in chemical, oil & gas, power, or process industries
⚙️ Technical Data Summary
| Parameter | Value / Detail |
|---|---|
| Supply voltage | 20-32 V DC (typical 24 V) :contentReference[oaicite:9]{index=9} |
| Power consumption / dissipation | ~2.4 W typical :contentReference[oaicite:10]{index=10} |
| Input type | 0/4-20 mA (2-wire or 3-wire transmitters) :contentReference[oaicite:11]{index=11} |
| Output | Dual isolated 0/4-20 mA outputs :contentReference[oaicite:12]{index=12} |
| Accuracy | ≤ 0.1 % (at 20 °C) :contentReference[oaicite:13]{index=13} |
| Signal splitting | Yes — 1 input, 2 outputs :contentReference[oaicite:14]{index=14} |
| Isolation / Safety rating | Up to SIL3 per IEC 61508 :contentReference[oaicite:15]{index=15} |
| Ambient temperature range | –20 °C to +60 °C typical (check datasheet) :contentReference[oaicite:16]{index=16} |
| Load capability | Up to 550 Ω load on each output :contentReference[oaicite:17]{index=17} |
| Mounting | DIN-rail (35 mm) :contentReference[oaicite:18]{index=18} |
🔄 KFD2-CR4-1.20 vs Alternatives / Why Choose It
When selecting a signal isolator or transmitter power supply, here’s how this model stands out:
- Capability to drive **two isolated outputs** from a single input offers flexibility and redundancy.
- High accuracy and SIL3 rating make it suitable for safety and control loops.
- 兼容 with standard 24 V DC control systems — no exotic power needed.
- Compact, modular design fits easily in control cabinets.
🚀 Final Thoughts & Call to Action
The Pepperl+Fuchs KFD2-CR4-1.20 remains a top-tier choice when you need reliable galvanic isolation and dual output in demanding industrial environments. Whether for new installations or retrofits, its combination of accuracy, SIL3 capability, and signal splitting makes it a compelling option.
Want pricing, datasheets or help on installation? Contact us:dutchmarinesupply@gmail.com or call +91 8198989881. We deliver globally.