• Model: UNS0122A-P

• Part Number: 3BHE042393R0101

• Type: Core Control Module / Excitation Control Unit

• Manufacturer: ABB

• Origin: Sweden / Switzerland

• Application: Generator excitation systems, Advant OCS, Masterpiece, industrial automation racks

2. Electrical Specifications

• Supply Voltage: 24 V DC ±20%

• Power Consumption: ≤12 W

• Isolation: Galvanic isolation for I/O and communication ports

3. I/O & Communication

• I/O Channels: 16DI / 16DO (digital input/output)

• Ethernet: 2 × 10/100 Mbps (TCP/IP, real‑time protocols)

• Fieldbus: PROFINET, Modbus RTU/TCP, Profibus DP

• Serial: RS232/RS485 (diagnostics, debugging)

4. Mechanical & Environmental

• Dimensions (W × H × D): 180 × 82 × 480 mm

• Weight: 0.66–1.0 kg

• Operating Temperature: -20°C to +60°C

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5%–95% RH, non‑condensing

• Protection Class: IP20 (front)

• Mounting: ABB standard rack mount

  

5. Key Features

• Excitation Control: Precisely regulates generator excitation current, voltage, and reactive power

• High Performance: Advanced control algorithms, real‑time data processing

• Hot‑Swap: Replaceable without system shutdown (minimizes downtime)

• Diagnostics: Real‑time error monitoring, self‑test, and fault logging

• Redundancy: Supports redundant operation for critical applications

• Compatibility: Works with ABB AC500, Advant, and third‑party devices

6. Certifications

• CE, UL, RoHS compliant

7. Applications

• Power generation (hydro, thermal, nuclear)

• Generator excitation control and grid stabilization

• Process automation (oil & gas, pulp & paper, metals)

• High‑reliability industrial control and monitoring systems