Pepperl+Fuchs KFD2-STC4-Ex1 SMART Transmitter Power Supply

Pepperl+Fuchs KFD2-STC4-Ex1 is a 1-channel isolated barrier designed for hazardous area field instruments. This isolated barrier delivers stable power supply for 2-wire and 3-wire SMART transmitters. The isolated barrier supports HART communication and 0/4-20mA analog signal transmission between explosive zone and control room. The isolated barrier complies with intrinsic safety standards for chemical, oil and gas industrial sites.

Intrinsic safety is the core feature of Pepperl+Fuchs KFD2-STC4-Ex1. Intrinsic safety limits energy output to prevent ignition in explosive atmospheres. Reliable Intrinsic safety guarantees safe connection of field transmitters in Zone 0,1,2. Certified Intrinsic safety meets SIL 2 requirements according to IEC 61508 functional safety standard.

This unit provides reliable HART communication for SMART transmitter configuration and diagnostics. HART communication enables bidirectional data exchange between field devices and control systems. Built-in terminals with test sockets simplify HART communication access without wire disconnection. Stable HART communication supports real-time parameter reading and fault inspection for process transmitters.

Pepperl+Fuchs KFD2-STC4-Ex1 accepts 20~35V DC power input via power rail or screw terminals. It transfers isolated analog signals to safe side, supports line fault detection and LED status indication. Compact DIN rail mounting saves cabinet space, widely used in petrochemical, pharmaceutical and energy automation projects. It offers dependable signal isolation and power feeding for process measurement loops.