ABB LDGRB‑01 3BSE013177R1 Exciter Control Board

Technical Specifications

Model: LDGRB‑01

Part Number: 3BSE013177R1

Brand: ABB

Product Type: Exciter regulation control board

Main Controller: H8 microcontroller

Supported Device: DCF803 / DCF804 field exciter

Control Function: PI excitation current control, PLL synchronization, bridge reversal logic

Measurement: AC/DC voltage measurement, DC current sampling via current transformer

Communication Interface: RS‑485, DCSLink interface

Firmware Storage: On‑board flash memory for parameter storage

Power Supply: Auxiliary power supplied by exciter unit

Operating Temperature: ‑20℃ ~ +70℃

Protection Class: IP20

Mounting: Rack‑slot installation inside exciter cabinet

Core Function: Realize excitation current closed‑loop regulation, synchronization detection and fault logic processing for field exciter

Product Details

The LDGRB‑01 3BSE013177R1 is a professional Exciter Regulation Control Board for ABB DCF803 and DCF804 series field exciters, it acts as core Field Exciter Processing Unit for excitation control loop. It undertakes closed‑loop PI adjustment of excitation current, phase‑locked synchronization detection, bridge commutation and fault protection logic for the exciter equipment.

Equipped with H8 industrial microcontroller, the module samples actual excitation current and voltage signals in real‑time. It calculates output control quantity according to set parameters, and completes accurate current closed‑loop control. For DCF804 full‑controlled exciter, it supports electric bridge reversal function to realize bidirectional excitation adjustment. RS‑485 and DCSLink interfaces realize data interaction with upper‑level converter control board, uploading operating status and fault alarm information.

LED indicators on front panel display module running status, synchronization signal and fault code. Built‑in hardware diagnosis function monitors measurement circuit, communication link and internal operating state. When over‑current, loss‑of‑synchronization or communication abnormality occurs, the module triggers protection action and transmits fault information to upper control system.

Standard rack‑slot installation inside exciter cabinet. Widely used in generator excitation, large‑size motor excitation and other industrial sites equipped with DCF803 / DCF804 exciters. It is essential control hardware for exciter system overhaul, control loop optimization and defective exciter board replacement.