ABB UFC921A101 (Part No. 3BHE024855R0101) Overview

Product Type:

Unified Function Controller (UFC), serving as the main control/CPU module within ABB’s AC 800M DCS and 800xA Extended Automation Systems.

Main Functions:

Performs real-time system control, data processing, and communication.

Supports 1:1 Hot Standby redundancy for automatic switchover between primary and backup controllers, enhancing system reliability.

Offers multiple industrial communication interfaces (Ethernet, RS-232, RS-485, CAN bus, etc.), compatible with DCS, PLC, and SCADA systems.

Technical Specifications

Processor: 1.8 GHz dual-core CPU

Memory: High-capacity RAM and Flash memory

Operating Voltage: +24 V DC

Power Consumption: < 30 W (typical, depending on configuration)

Operating Temperature: 0 °C to +60 °C

Storage Temperature: –40 °C to +85 °C

Redundancy: Supports 1:1 Hot Standby redundant operation

Application Areas:

Industrial automation and process control systems

Energy, power generation, petrochemical, and manufacturing sectors requiring high-reliability, real-time control

Used in combination with ABB AC 800M DCS, 800xA systems, and other ABB automation components (such as drives and I/O modules)

Installation and Maintenance Guidelines (Common Recommendations):

Check Connections: Periodically inspect all communication and I/O cables related to 3BHE024855R0101 to avoid loose connections caused by vibration or thermal expansion.

Monitor Status: Use HMI or supervisory software to continuously track communication status, diagnostics, and alarm logs.

Environmental Control: Ensure proper cabinet ventilation to prevent overheating and extend module lifespan.

Regular Backup: Back up configuration data to enable quick recovery in case of system failure.

Summary:

The ABB UFC921A101 (Part No. 3BHE024855R0101) is a high-reliability main CPU module designed for industrial control applications. Featuring a dual-core processor, hot redundancy, comprehensive communication interfaces, and a wide operating temperature range, it is widely used in ABB AC 800M and DCS systems as well as related automation projects.