ABB UAC389AE02 / HIEE300888R0002

Basic Identification

Model: UAC389AE02

Part Number: HIEE300888R0002

Manufacturer: ABB

Product Type: High‑Performance Control Processor / Excitation System CPU Module

Applicable System: ABB Generator Excitation Systems, AC 800M, System 800xA

General Description

UAC389AE02 (HIEE300888R0002) is the core control processor for ABB static excitation systems and high‑availability process controllers. It executes closed‑loop excitation regulation, fault protection, and high‑speed logic control, acting as the main CPU board in power plant excitation cabinets and critical automation nodes.

Technical Specifications

Processor & Memory

CPU: 32‑bit RISC (200–400 MHz, hard real‑time)

RAM: 256 KB / 512 KB

Flash: 512 KB / 2–4 MB (for firmware & logic)

Electrical

Supply: 24 VDC (19.2–31.2 VDC)

Power Consumption: ~8–12 W

Communication

Protocols: Modbus/TCP, Profinet, Ethernet/IP, RS‑485

Interfaces: Ethernet ×1, Serial ×2

Environmental

Operating Temp: −40 °C … +70 °C

Storage Temp: −40 °C … +85 °C

Humidity: 5%–95% RH, non‑condensing

Protection: IP20

Certifications: CE, UL, CSA, RoHS

Mechanical

Dimensions (H×W×D): 120 × 80 × 25 mm

Weight: ~0.3–0.5 kg

Mounting: ABB standard rack / DIN rail

Key Features

Excitation System Core: Dedicated for generator excitation control with fast response and high stability。

Hard Real‑Time Performance: 32‑bit RISC CPU ensures deterministic control for critical loops。

Redundancy Support: Hot‑swap and redundant operation for zero downtime。

Integrated Diagnostics: LED status indicators and online fault detection for quick troubleshooting。

Harsh Environment Resilience: Wide temperature range and industrial EMC for power plants and heavy industry。

Compatibility

Systems: ABB Excitation Systems, AC 800M, System 800xA

Engineering Tools: Control Builder M, 800xA Engineering

Applications: Power generation (excitation), process control, motion control, and industrial automation。