ABB PM866 3BSE050200R1Product NameABB PM866 3BSE050200R1 Processor Module (AC 800M Series, High-End Redundant Industrial Controller for Large-Scale Process Control).Product DescriptionThe ABB PM866 3BSE050200R1 is a flagship processor unit in the AC 800M DCS portfolio, engineered to deliver high-speed, deterministic control for complex industrial processes such as power generation, oil & gas refining, chemical manufacturing, and water treatment. It features a powerful dual-core RISC processor with hardware-based redundancy support, enabling hot-standby configurations to eliminate single points of failure and maximize system uptime. Key capabilities include large memory capacity for extensive control logic and data logging, dual Gigabit Ethernet ports for redundant network connectivity, and seamless integration with ABB S800/S900 I/O modules and third-party fieldbuses (Profinet, Profibus DP, Modbus TCP/RTU, Foundation Fieldbus). The module supports IEC 61131-3 programming languages (LD, FBD, ST, SCL, CFC) via ABB Control Builder M software, and complies with functional safety standards for SIL 3 applications (when paired with certified I/O and safety logic). Its rugged design withstands harsh industrial environments, making it ideal for large-scale, high-reliability control systems requiring fast cycle times, high I/O density, and advanced fault tolerance.Key Parameters & Specifications

| Category | Specification | Notes (Critical Distinctions) |
|---|---|---|
| Manufacturer | ABB Process Automation | AC 800M series high-end controller; 3BSE050200R1 = base part number |
| Product Type | Industrial DCS processor module | Rack-mounted; supports standalone or redundant (hot-standby) operation |
| Processor | Dual-core RISC processor, 1.2 GHz | Delivers 2–3× faster performance than PM864/PM865 variants |
| Memory | – RAM: 1 GB ECC SDRAM (error-correcting for data integrity)
– Flash Storage: 2 GB non-volatile flash (for firmware, configuration, and program storage) |