Pepperl+Fuchs KFD2-STC4-EX2 – SMART transmitter power supply

The Pepperl+Fuchs KFD2-STC4-EX2 is a 2-channel isolated barrier designed for intrinsically safe applications in hazardous areas. It supplies power to 2-wire SMART transmitters and safely transfers analog signals to control systems.

The module supports bidirectional communication and allows digital protocols such as HART to be transmitted together with analog signals, ensuring reliable operation in process automation systems.

Technical overview:
• Type: intrinsically safe barrier
• Channels: 2
• Input / Output: 0/4–20 mA
• Supported protocols: HART, BRAIN, Foxboro
• Supply voltage: 20–35 V DC
• Output load: up to 550 Ω
• Accuracy: ≤ 10 µA
• Isolation: galvanic
• Mounting: DIN rail
• Operating temperature: –20°C to +60°C

Safety:
• SIL 2 (IEC/EN 61508)
• ATEX / IECEx certified
• Suitable for Zone 0, 1, 2

Typical applications:
• Hazardous area signal transmission
• SMART transmitter integration
• Process automation systems
• Oil & gas and chemical industry

About the manufacturer:
Pepperl+Fuchs is a global leader in intrinsic safety and industrial automation solutions, widely used in hazardous environments worldwide.