3BHE017628R0102 (PPD115A102) is a high‑speed processing control unit for ABB AC800PEC platform. Built with combined DSP‑FPGA hardware, it delivers fast loop calculation for power‑electronic closed‑loop regulation. It undertakes gate pulse output, real‑time signal acquisition and system protection logic for excitation and converter equipment.Rich fiber‑optic communication interfaces guarantee reliable data transmission and strong noise immunity under harsh plant‑site environments. It supports configuration via Control Builder M and Simulink‑based algorithm deployment, and can work independently or cooperate with other PEC modules for multi‑unit coordinated control.Typical applications cover generator excitation control, MV drives, static var compensators and grid‑connected power conversion. Confirm hardware revision and firmware compatibility during spare replacement. Perform static check and parameter verification after installation. Cut off power supply fully before hardware maintenance. Suitable for on‑site fault replacement and long‑term spare stocking of running AC800PEC systems.