ABB 3BHE004573R0142 UFC760BE142 INU Interface Board

Description

Hardware and Performance Specifications Auxiliary supply: 24 V DC, 18‑30 V DC wide‑range input Power consumption: ≤10 W Binary Inputs: Multi‑channel galvanic‑isolated 24 V DC digital inputs Binary Outputs: Isolated trigger‑pulse and status‑output channels Isolation voltage: Reinforced isolation between field‑side and system‑circuit Communication interfaces: Internal high‑speed back‑plane bus for AC800PEC rack Mounting mode: Subrack plug‑in PCB for UNITROL5000 excitation cabinet Protection class: IP20 Operating temperature: ‑25 ℃ ~ +70 ℃ Storage temperature: ‑40 ℃ ~ +85 ℃ Humidity: 5‑95 %RH non‑condensing EMC compliance: Comply with IEC 61000‑4 series industrial electromagnetic‑compatibility standards Dimension & weight: approx. 240 × 160 × 35 mm, net weight approx. 0.54 kgABB Group Certifications: CE approval

Main Functions Collect binary interlock signals, status feedback signals from excitation power unit and field‑site devices. Transmit trigger‑pulse control signals from main controller to power‑bridge power‑semiconductor units. Realize high‑speed data interaction between local I/O channels and excitation main‑controller via back‑plane bus. Surge‑protection processing for field‑input signal loops. Front‑panel LED indicators display power‑on status, running status and hardware‑fault alarm codes for on‑site inspection. Hardware self‑diagnosis detects channel abnormality, trigger‑circuit fault and internal circuit failure, upload fault‑alarm information to excitation main unit. Parameter configuration and fault diagnosis are completed by ABB excitation engineering software.

Installation Requirement Plug‑in installation inside UNITROL5000 excitation subrack. High‑power power cables and weak‑signal control‑wiring shall be routed separately. Ensure reliable cabinet protective grounding. Auxiliary 24 V DC power supply shall stay within rated operating range. After board replacement, confirm full part‑number UFC760BE142 / 3BHE004573R0142 strictly matches original excitation‑system configuration, download complete excitation‑configuration file. Perform binary‑I/O loop test, trigger‑signal verification and back‑plane‑bus communication inspection. Different hardware revisions cannot be directly interchanged without firmware and configuration adaptation. Do not put into service until no hardware self‑diagnosis fault alarm exists.

Typical Application Scenarios INU interface spare‑part for UNITROL5000 static excitation‑systems of large‑capacity synchronous generators in thermal‑power plants, hydropower plants and large‑industrial captive‑power‑stations; used for excitation‑system maintenance and spare‑part replacement.

Key Features

1. Dedicated INU interface board for UNITROL5000 excitation platform, realizes signal‑interaction between main controller and power‑unit peripheral circuits.
2. Reinforced galvanic‑isolated channels, good anti‑interference performance for harsh strong‑electromagnetic‑interference power‑plant sites.
3. Plug‑in subrack‑mount structure, convenient for on‑site replacement and maintenance.
4. Complete hardware self‑diagnosis function for fast fault location.
5. Strict full‑part‑number matching shall be observed during spare‑part replacement; cannot be substituted by other similar‑interface boards without adaptation.