PEPPERL+FUCHS KCD2-STC-EX1 SMART TRANSMITTER POWER SUPPLY ISOLATED BARRIER

PEPPERL+FUCHS KCD2-STC-EX1 is a single-channel intrinsic safety isolated barrier (SMART transmitter power supply) belonging to Pepperl+Fuchs K-System, for 2-wire HART smart transmitters installed in hazardous explosive areas. The isolated barrier supplies 24V DC power to field HART transmitters in Zone 0/1/2 hazardous locations, while galvanically isolating the hazardous side and safe control side of the plant. The isolated barrier receives 4–20mA analogue process signals from transmitters and transfers isolated 4–20mA /1–5V signals to PLC, DCS and marine automation control systems. The isolated barrier supports bidirectional HART protocol communication, enabling parameter configuration and diagnostics via HART communicator. The isolated barrier features line fault monitoring to detect open circuit and short circuit faults of field sensor wiring, with collective fault alarm output.

PEPPERL+FUCHS KCD2-STC-EX1 adopts ultra-narrow 12.5mm width DIN rail mounting assembly for compact control cabinet installation. The intrinsic safety module operates on 19–30V DC wide-range power supply via WAGO-style power rail or direct terminal wiring. The intrinsic safety module supports source/sink mode selection by DIP switches and has integrated 250Ω internal resistor for HART communication matching. The intrinsic safety module meets SIL2 (SC3) functional safety requirements under IEC 61508 and carries ATEX intrinsic safety certification for explosive gas environments. The intrinsic safety module has LED status indicators for power supply and fault diagnosis for fast on-site troubleshooting.

PEPPERL+FUCHS KCD2-STC-EX1 is widely used in petrochemical plants, offshore platforms, marine chemical process systems and hazardous area process measurement and control. The industrial spare part can replace defective isolated barriers to restore intrinsic safety power supply, 4–20mA signal transmission and HART communication rapidly. The industrial spare part matches original electrical and mechanical specifications for direct DIN rail replacement. The industrial spare part has clear part marking for fast identification and stock management. The industrial spare part reduces hazardous area automation system downtime during cabinet overhaul and instrument maintenance.