PM856AK01 ABB 3BSE066490R1 AC 800M CPU Processor

Product Overview

The ABB PM856AK01 (3BSE066490R1) functions as the high-performance computational core for the AC 800M controller family within the System 800xA platform. This 100% Brand New original processor kit provides the deterministic logic and high-speed data processing required for complex industrial automation. Equipped with a dual-core 1.8 GHz PowerPC processor, it executes mission-critical control loops with sub-millisecond precision. The package arrives as a complete deployment solution, including the PM856A CPU, TP830 baseplate, terminators, and a backup battery to ensure uninterrupted operational integrity.

Technical Specifications

Engineering Advantages

• High-Speed Deterministic Execution: The dual-core PowerPC architecture delivers cycle times of 1 ms or less. This rapid execution ensures that the controller reacts to process deviations in real-time, maintaining stability in high-velocity applications such as turbine control or rapid chemical reactions.

• SIL 3 Safety Integration: The PM856AK01 meets stringent SIL 3 safety requirements. It allows engineers to host both standard process control and safety-instrumented functions within a single integrated environment, reducing hardware footprint while complying with international safety standards (IEC 61508).

• Comprehensive Kit Readiness: Unlike standalone CPU boards, the PM856AK01 package includes the TP830 baseplate and essential ModuleBus/CEX-bus terminators. This complete kit simplifies procurement and ensures that all mechanical and electrical components match perfectly during panel assembly.

• Resilient Memory Management: With 2 GB of DDR3 RAM and dedicated flash memory, the unit handles large-scale application code and extensive historical data buffering. The included backup battery prevents data loss during primary power failure, protecting the volatile application memory.

FAQs

• Q: Which engineering tool do I use to program the PM856AK01?

• A: You use the ABB Control Builder 800 tool. It supports all five IEC 61131-3 programming languages, allowing for flexible logic development including Function Block Diagrams and Structured Text.

• Q: Can this processor handle redundant configurations?

• A: Yes. The PM856AK01 supports high-availability redundant setups. When paired with a second unit, it utilizes the CNCP clock synchronization to ensure a seamless "bumpless" transfer if the primary CPU fails.

• Q: What is the maximum number of I/O points supported?

• A: The CPU natively supports up to 1024 I/O points. However, you can expand this capacity further by utilizing CEX-bus communication interfaces or distributed I/O clusters via PROFINET or Modbus TCP.

• Q: Is the backup battery included in the 3BSE066490R1 package?

• A: Yes. The PM856AK01 is a full kit that includes the processor unit, the baseplate, the necessary terminators, and the backup battery for immediate installation.