Product Details

ABB UFC721BE101 3BHE021889R0101 is a fiber optic signal interface board designed for ABB AC800PEC power electronic control platform and UNITROL generator excitation systems. The fiber optic signal interface board serves as the high-speed communication bridge between the main processor board and power conversion units. It receives control commands, transmits voltage and current feedback signals, and realizes synchronous data transmission through fiber optic links to isolate high voltage interference. This ABB UFC721BE101 board adopts opto-isolated communication design to separate low-voltage control circuits from high-power converter circuits, effectively blocking surge and electromagnetic interference from power side and protecting core control hardware. The AC800PEC UNITROL control interface unit has built-in self-diagnostic function and LED status indicators, which continuously monitor fiber communication status, signal quality and internal circuit faults, and trigger alarm prompts for fast on-site maintenance. Conformal coated circuit board improves resistance to moisture, dust and vibration, maintaining stable operation in harsh power plant cabinet environments. Widely used in power plant generator excitation control cabinets, medium voltage variable frequency drives and metallurgical high-power power conversion equipment, it is critical spare part for power electronic system maintenance, upgrade and renovation. Rack plug-in structure enables convenient installation and quick field replacement.

Parameters and Specifications

Brand: ABB

Model: UFC721BE101 3BHE021889R0101

Product Type: Fiber Optic Signal Interface Board

Compatible System: ABB AC800PEC platform, UNITROL generator excitation system

Function: Fiber optic data transmission, signal conversion, system communication isolation

Isolation: Optical fiber galvanic isolation

Feature: Built-in self-diagnosis, LED status indicator, conformal coating

Power Supply: 24V DC

Operating Temperature: -20°C ~ +70°C

Protection Class: IP20

Condition: New or tested used spare parts