ABB PM864AK02 3BSE018164R1 Redundant Processor Unit

The ABB PM864AK02 (3BSE018164R1) is a high-performance redundant processor unit designed for the AC 800M control system within ABB’s flagship 800xA distributed control system (DCS). Engineered for mission-critical applications, the PM864AK02 enables fault-tolerant and deterministic control by supporting full CPU redundancy — ensuring that industrial processes continue seamlessly, even in the event of a processor failure.

This module integrates advanced diagnostics, high-speed data processing, multiple communication interfaces, and embedded real-time clocks. It is tailored for industries where system availability, reliability, and uptime are of utmost importance.

Technical Specifications

Product Applications

The ABB PM864AK02 is widely deployed in complex, large-scale industrial processes that demand high system uptime and deterministic control behavior. It is especially suitable for:

• Power Generation and Distribution

• Oil & Gas Refining and Petrochemical Plants

• Water and Wastewater Treatment Facilities

• Pulp and Paper Mills

• Metallurgy and Steel Processing Plants

• Pharmaceutical Manufacturing

• Food and Beverage Process Control

This module is a key component where safety, continuity, and precise control are non-negotiable.

Product Advantages

• Full CPU Redundancy Support

  Enables seamless switch-over between primary and backup CPUs, ensuring no process interruption.

• Robust System Integration

  Designed for full compatibility with ABB’s 800xA control system and S800 I/O family.

• High Processing Speed

  Capable of handling complex algorithms and control strategies in real time.

• Flexible Communication Interfaces

  Offers multiple network and fieldbus connections for maximum integration flexibility.

• Integrated Diagnostics

  Built-in LED indicators and error logging enhance maintenance efficiency and predictive diagnostics.

• Long Product Life Cycle

  Developed to meet the demanding lifecycle requirements of mission-critical industries.

Frequently Asked Questions (FAQ)

1. What control system is the PM864AK02 designed for?

It is designed for use with ABB’s AC 800M controller and integrates seamlessly into the 800xA DCS platform.

2. Does the PM864AK02 support hot redundancy?

Yes, it supports full hot redundancy, allowing automatic switchover between processors without system interruption.

3. Can it be used with existing ABB S800 I/O modules?

Yes, it is fully compatible with the S800 I/O series via communication interface modules.

4. What is the advantage of the CEX-bus port?

The CEX-bus provides high-speed internal communication and enables redundancy between processors and communication modules.

5. Is the real-time clock battery-backed?

Yes, the PM864AK02 includes a battery-backed real-time clock to maintain accurate timekeeping during power loss.

6. How is firmware updated?

Firmware updates are performed using ABB’s Control Builder M engineering tool through an Ethernet interface.

7. What type of memory does it use?

It is equipped with 32 MB Flash memory for storage and 16 MB DRAM for high-speed data processing.

8. Is the processor suitable for safety-critical applications?

While the module itself is not a certified safety controller, it can be part of a safety-certified architecture when used with appropriate components.

9. How does it perform under power failures?

It maintains its system status and timing information during short-term power interruptions and supports safe restart procedures.

10. What are the typical industries using this module?

Common industries include oil & gas, power utilities, pulp and paper, wastewater treatment, and other process-intensive environments.