3BSE018161R1 | ABB PM864AK01 Processor Unit

The ABB PM864AK01 serves as the central intelligence for the AC 800M controller platform within the 800xA automation architecture. This high-performance processor unit executes complex control logic for both continuous and batch process environments. Because it utilizes a 96 MHz MPC862 CPU, the module maintains rapid execution speeds even under significant computational loads. The unit manages up to 32 applications per controller, ensuring that large-scale industrial operations remain synchronized and responsive.

Memory Architecture and Performance

The PM864AK01 features a robust memory configuration designed for data-intensive automation tasks. It provides 32 MB of onboard RAM, with approximately 23.5 MB dedicated specifically to user applications. Furthermore, the unit achieves a Boolean performance of 0.15 milliseconds per 1000 operations. This efficiency allows the controller to handle high-speed tasks with cycle times as low as 1 millisecond. To prevent data loss during power interruptions, the package includes a 3.6V lithium backup battery for reliable memory retention.

Communication and Expandability

This processor unit offers extensive connectivity options to integrate seamlessly into modern industrial networks. It supports multiple communication standards and expansion buses.

• Ethernet Connectivity: Dual IEEE 802.3 channels (10 Mbit/s) for control network redundancy.
• Serial Interfaces: One RS-232C port (COM3) and one isolated port (COM4) for peripheral integration.
• CEX-Bus Support: Capacity for up to 12 Communication Expansion modules.
• I/O Capacity: Supports up to 96 I/O modules in single configurations or 84 in redundant setups.
• Module Bus: Integrated interface for local S800 I/O expansion.

Technical Specifications