ABB PM864

ABB PM864 Processor Unit (CPU Module), ABB AC 800M Series, Legacy Mid-Range Industrial Controller with Redundancy Capability.

The ABB PM864 is a field-proven processor module in the AC 800M family, engineered for reliable, deterministic control in industrial automation, process control, and utility substation applications. Powered by a 96 MHz MPC862 microprocessor, it balances processing performance with low power consumption and long-term availability, making it suitable for both standalone and redundant CPU configurations to maximize uptime. Key features include 32 MB RAM (with battery backup for data retention), integrated Ethernet (10Base-T) for networked control and HMI connectivity, dual RS-232-C serial ports (one for modem support, one for service/tools), and compatibility with ABB’s S800 I/O system for scalable digital/analog I/O expansion. It supports IEC 61131-3 programming languages (LD, FBD, ST, SCL, CFC) and seamless integration with ABB’s Control Builder M software for configuration, commissioning, and maintenance. Ruggedized for harsh industrial environments with wide temperature tolerance and vibration resistance, it is ideal for process plants, power generation, and water/wastewater systems requiring stable, long-lived control platforms.