Product Overview
The ABB PM864A (3BSE018161R1 / PM864AK01) is a high-performance processor module designed for ABB’s AC 800M control system platform. It functions as the central processing unit of the controller, responsible for executing application logic, managing communication, coordinating I/O operations, and maintaining deterministic control performance in complex industrial automation systems.
The PM864A is engineered to support continuous operation in demanding industrial environments, offering high computational capability, stable real-time execution, and robust system diagnostics. Its modular design allows seamless integration within the AC 800M architecture, supporting scalable system configurations from small control tasks to large, distributed automation systems.
This processor module is widely recognized for its reliability, long lifecycle support, and compatibility with a broad range of ABB I/O modules, communication interfaces, and redundancy solutions.

ABB PM864A
Product Parameters (Technical Specifications)
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | PM864A |
| Order Number | 3BSE018161R1 |
| Controller Variant | PM864AK01 |
| Product Type | AC 800M Controller Processor Module |
| Processor Architecture | High-performance industrial CPU |
| Control Platform | ABB AC 800M |
| Memory Type | Integrated program and data memory |
| Execution Mode | Real-time deterministic control |
| Communication Interfaces | System bus and controller backplane |
| Redundancy Support | Compatible with controller redundancy configurations |
| Power Supply | Supplied via AC 800M system power modules |
| Installation Method | DIN rail or controller rack mounting |
| Operating Duty | Continuous industrial operation |
| Diagnostics | Comprehensive self-diagnostics and system status monitoring |
Product Datasheet (Functional and Technical Description)
The ABB PM864A PM864AK01 serves as the computational core of the AC 800M control system. It executes control applications, manages process data, and ensures synchronized operation between field I/O, communication modules, and higher-level systems.
Processing and Control Capability
The PM864A provides fast and deterministic execution of control programs, ensuring stable cycle times and predictable system behavior. This capability is essential for time-critical automation tasks, including closed-loop control, sequence logic, and interlocking functions.
System Integration
Designed specifically for the AC 800M platform, the PM864A integrates seamlessly with ABB I/O modules and communication interfaces. The module communicates through the system backplane, allowing efficient data exchange with distributed I/O and networked control components.
Reliability and Diagnostics
Reliability is a core design principle of the PM864A. The module incorporates extensive internal diagnostics that continuously monitor processor health, memory integrity, and communication status. Diagnostic information is made available to the control system, enabling early fault detection and simplified maintenance.
Scalability and Flexibility
The PM864A supports scalable system architectures, making it suitable for both standalone controllers and distributed control environments. It can be deployed in single or redundant configurations, allowing system designers to tailor availability and performance levels according to application requirements.
Industrial Design
Mechanically, the PM864A is built for installation in industrial cabinets and control rooms. Its construction supports long-term operation under electrical noise, vibration, and temperature variations commonly found in industrial automation environments.
Country of Origin
The ABB PM864A 3BSE018161R1 PM864AK01 is manufactured under ABB’s global industrial production and quality management standards. ABB controller hardware is produced in certified manufacturing facilities that follow rigorous testing, validation, and traceability procedures to ensure consistent performance and long-term reliability.
ABB’s manufacturing philosophy emphasizes durability, lifecycle stability, and compatibility across generations of control hardware, ensuring that modules such as the PM864A meet the expectations of critical industrial applications.
Product-Related News
Industrial automation systems continue to evolve toward higher integration, improved reliability, and greater computational efficiency. Within this context, controller processor modules like the PM864A remain central to modernization and system expansion projects.
Many industrial operators are extending the lifecycle of existing AC 800M installations while incrementally upgrading performance through processor enhancements and optimized application software. The PM864A supports this trend by offering stable performance and compatibility with established AC 800M infrastructures.
In addition, increasing demand for system redundancy and higher availability has reinforced the importance of controller modules that support robust diagnostic functions and redundancy architectures. The PM864A’s design aligns well with these industry requirements, maintaining its relevance in both legacy systems and upgraded automation environments.
Recommended Related ABB Models
For system expansion, performance comparison, or redundancy planning, the following ABB AC 800M processor modules and related components are commonly recommended:
- PM861A — Entry-level AC 800M processor module for smaller control applications.
- PM865 — Higher performance processor module designed for more demanding control tasks.
- PM866K01 — Advanced controller module supporting high availability and extended system capacity.
- PM891 — Safety-related controller processor for integrated safety and control systems.
- CI854A / CI867 — Communication interface modules commonly used alongside PM864A processors.
These models allow system designers to select appropriate processing power, redundancy support, and functional scope to match specific automation project requirements.
Common Questions and Answers (Q&A)
Q1: What role does the PM864A play in an AC 800M system?
It acts as the main processor, executing control logic and coordinating communication between system components.
Q2: Is the PM864A suitable for continuous operation?
Yes. It is designed for continuous industrial duty in automation systems.
Q3: Can the PM864A be used in redundant controller configurations?
Yes. It is compatible with ABB’s AC 800M redundancy solutions.
Q4: How does the module handle diagnostics?
It includes built-in diagnostics that monitor processor performance, memory, and communication health.
Q5: Is the PM864A compatible with existing AC 800M I/O modules?
Yes. It is fully compatible with ABB AC 800M I/O and communication modules.
Summary
The ABB PM864A 3BSE018161R1 PM864AK01 is a robust and reliable processor module forming the core of the AC 800M control system. With deterministic real-time performance, comprehensive diagnostics, and flexible system integration, it supports a wide range of industrial automation applications. Manufactured under ABB’s strict quality standards and supported by a strong ecosystem of related modules, the PM864A remains a dependable choice for both existing installations and system expansion projects.






