The ABB XVC724BE101 (Ordering Code: 3BHE009017R01) is a VLSCD (Very Large Scale Control Device) flash memory control subboard designed for ABB Freelance distributed control systems and DCS platforms. As a core data storage and control component, it provides high-speed, non-volatile flash memory storage for system configuration files, program logic, historical data logs, and firmware updates, with a storage capacity of 1GB (expandable up to 4GB) and data read/write speeds of up to 100MB/s. The module features dual redundant Ethernet interfaces (10/100BASE-T) for seamless communication with Freelance controllers and operator workstations, supporting hot-swappable operation to minimize downtime during maintenance. With 2500V AC electrical isolation between the control and communication circuits, it effectively resists electromagnetic interference (EMI) and radio frequency interference (RFI) in harsh industrial environments, ensuring data integrity and system stability. Equipped with comprehensive fault detection, error correction (ECC), and data backup functions, it is an ideal solution for critical process control applications in power generation, oil & gas, petrochemical, and chemical industries requiring continuous data availability and reliable system operation.

3. Typical Applications