ABB UNS0122A-P 3BHE042393R0101 Inverter Communication Board
Product Overview
The ABB UNS0122A-P 3BHE042393R0101 is a high-performance inverter communication and control board engineered for ABB industrial drives, automation systems, and distributed control applications. As a core interface unit, it enables seamless real-time data exchange between inverters, PLCs, SCADA, and DCS platforms, while integrating local I/O and control logic for precise process regulation. It is also known as a core control module with the commercial part number 3BHE042393R0101 and functional designation UNS0122A-P.
Key Features
High-Speed Processing & Control
Powered by an industrial 32-bit processor with a clock speed of 240 MHz, delivering fast execution of control algorithms, real-time signal processing, and reliable coordination with inverter power stages. Ensures low-latency responses for time-critical drive and process control tasks.
Multi-Protocol Communication Interfaces
Equipped with RS-485, Ethernet, and support for Modbus RTU/TCP, CANopen, and ABB proprietary protocols. Enables seamless integration with ABB ACS series inverters, Symphony Plus DCS, AC800M PLCs, and third-party automation devices for flexible system networking.
Integrated Digital & Analog I/O
Features 4 digital inputs, 4 digital outputs (relay rated 2 A @ 24 V DC), and 2 analog inputs for direct connection to sensors, switches, and actuators. Supports standard industrial signals (24 V DC, 4–20 mA, 0–10 V) for local monitoring and control.
Compact & Rugged Industrial Design
Constructed with a conformal-coated PCB and industrial-grade components, offering resistance to dust, moisture, vibration, and electromagnetic interference (EMI). The compact form factor supports standard panel or DIN-rail mounting in control cabinets, optimized for space-constrained environments.
Wide Environmental Tolerance
Operates reliably across an extended temperature range of -20°C to +70°C, withstanding 5%–95% non-condensing humidity and altitudes up to 2000 m. Suitable for deployment in harsh industrial sites including power generation, process industries, and heavy manufacturing.
Low Power Consumption & High Reliability
Consumes <5 W (typical), reducing energy costs and heat generation. Built-in self-diagnostics continuously monitor board health, communication status, and I/O integrity, with LED indicators for fault reporting. Designed for MTBF > 100,000 hours, compliant with CE, UL, RoHS, and IEC 61131-2 standards.
Technical Specifications
Manufacturer: ABB
Model: 3BHE042393R0101 (UNS0122A-P)
Product Type: Inverter Communication / Control Board
Processor: Industrial 32-bit, 240 MHz
Memory: On-board Flash/RAM for program and data storage
Power Supply: 24 V DC ±10% (12–48 V DC range); ≤5 W power consumption
Communication: RS-485, Ethernet 10/100 Mbps; Modbus RTU/TCP, CANopen, ABB proprietary
Digital I/O: 4 DI / 4 DO (relay 2 A @ 24 V DC)
Analog Inputs: 2 AI (4–20 mA / 0–10 V)
Protection Class: IP20
Operating Temperature: -20°C to +70°C
Storage Temperature: -40°C to +85°C
Humidity: 5%–95% non-condensing
Dimensions (W×H×D): 150 × 100 × 60 mm
Weight: Approximately 1.0 kg
Certifications: CE, UL, RoHS, IEC 61131-2
Core Functions
The UNS0122A-P 3BHE042393R0101 acts as a bridge between ABB inverters and upper-level control systems, enabling real-time data exchange for speed, torque, and position control. It processes digital and analog signals from field devices, executes local control logic, and transmits commands to inverter power units. The board supports system configuration, data logging, and fault diagnosis via ABB programming tools, facilitating efficient commissioning, troubleshooting, and predictive maintenance.
Typical Applications
Industrial Drives: ABB ACS series inverters for motor control in manufacturing, material handling, and HVAC systems.
Power Generation: Hydro, thermal, and gas power plants, integrating with excitation systems and DCS for generator control.
Process Industries: Chemical, petrochemical, oil and gas, pulp and paper, and pharmaceutical plants for precise process monitoring and control.
Factory Automation: Automotive, food and beverage, and packaging industries, controlling production lines, robotics, and machinery.
DCS Migration & Retrofit: Upgrading legacy ABB systems with modern digital control and multi-protocol communication capabilities
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