Product Introduction

Model Interpretation

• 3BHE016011R0002: Official ABB part number for ordering, inventory, and traceability.

• 3BHE: ABB’s standard prefix for DCS/PLC control and I/O modules.

• 016011: Functional code, indicating an excitation drive & voltage regulation (AVR) module with integrated logic processing.

• R0002: Hardware revision and configuration variant; “R0” denotes non‑hot‑swappable, factory‑calibrated version.

• UNS0118A‑Z: Product family name, representing a universal control board for power system excitation and monitoring.

Technical Parameters

• Power Supply: 24 V DC ±15%, reverse‑polarity protected; power consumption 10 W.

• Digital Inputs: 16 channels, 24 V DC logic, sink/source selectable, response time ≤1 ms.

• Digital Outputs: 16 channels, relay type, 250 V AC / 30 V DC, 2 A per channel.

• Analog Inputs: 4 channels, 4–20 mA / 0–10 V, 12‑bit resolution, accuracy ±0.1% FS.

• Analog Outputs: 2 channels, 4–20 mA / 0–10 V, 12‑bit resolution, for excitation setpoint control.

• Operating Temperature: −10 °C to +60 °C.

• Storage Temperature: −40 °C to +85 °C.

• Humidity: 5%–95%, non‑condensing.

• Protection Class: IP20 (indoor cabinet use).

• Dimensions: 250 mm × 150 mm × 50 mm.

• Weight: 0.8 kg.

• Certifications: CE, UL, RoHS compliant; origin Sweden.

Interface and Communication Configuration

• Power Interface: Screw terminals for 24 V DC input; redundant power support for reliability.

• I/O Terminals: Removable screw terminal blocks for 16DI/16DO/4AI/2AO; field‑wiring friendly.

• Communication: Integrated Ethernet (Modbus TCP), RS‑485 (Modbus RTU), and optional fiber‑optic interface; supports PROFIBUS DP for DCS connection.

• Status Indicators: Multi‑color LEDs for power, communication, I/O status, and fault diagnosis.

• Expansion: Supports daisy‑chain with ABB I/O modules for system scalability.

Core Functions

• Excitation Control: Precise generator excitation current regulation via analog outputs, maintaining stable output voltage under varying loads.

• Automatic Voltage Regulation (AVR): Real‑time voltage sensing and adjustment, ensuring ±1% voltage stability for generators.

• Logic Processing: Executes user‑defined control logic (start/stop, interlocks, protection sequences) via IEC 61131‑3 languages.

• Fault Diagnosis & Protection: Overvoltage, overcurrent, short‑circuit, and overtemperature protection; fault logging with time stamps.

• Data Acquisition & Monitoring: Collects generator parameters (voltage, current, temperature) and transmits to DCS/PLC for remote monitoring.

Application Scenarios

• Compatible Systems: ABB Symphony Plus DCS, AC500/800xA PLC, and generator excitation systems.

• Industries: Power generation (thermal, hydro, renewable), oil and gas, chemical, mining, and large manufacturing.

• Equipment: Synchronous generators, large motors, turbines, and critical machinery requiring precise voltage/excitation control.

Operation and Maintenance Instructions

• Installation: Mount on standard DIN rail or panel inside control cabinet; allow ≥20 mm clearance for ventilation.

• Wiring: Use shielded cables for analog/communication lines; separate high‑power and low‑signal cables to avoid interference.

• Routine Check: Inspect LED status and terminal tightness monthly; clean dust with dry cloth.

• Configuration: Set I/O types, communication parameters, and excitation logic via ABB Control Builder or DCS engineering tools.

• Replacement: Power off before removal/installation (non‑hot‑swappable); use only ABB‑certified spare parts.

• Calibration: Calibrate analog channels and AVR loop annually using precision sources to maintain accuracy.