Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model Number | PM865K01 |
| Order Number | 3BSE031151R1 |
| Product Type | High Integrity Processor Unit |
| Controller Platform | ABB AC 800M / System 800xA |
| Processor | MPC862P |
| CPU Frequency | 96 MHz |
| Memory | 32 MB RAM |
| Application Memory | Approx. 22 MB available |
| Safety Capability | SIL2 / SIL3 capable with approved configuration |
| Communication Ports | 2 × Ethernet RJ45, 2 × RS-232C serial ports |
| ModuleBus Support | S800 I/O connection |
| CEX-Bus Support | Yes |
| Redundancy Support | Supported with compatible redundant configuration |
| Included Components | PM865 CPU, TP830 baseplate, TB850, TB807, TB852 terminators, battery |
| Supply Voltage | 24VDC system supply |
| Mounting | AC 800M controller baseplate |
| Dimensions | Approx. 119 × 186 × 135 mm |
| Weight | Approx. 1.2 kg |
Product Introduction
ABB PM865K01 3BSE031151R1 Overview
The ABB PM865K01 3BSE031151R1 is an AC 800M High Integrity processor unit designed for ABB System 800xA automation environments. It executes control and safety application programs while managing communication with S800 I/O, CEX-Bus communication modules, and other controller components.
The ABB PM865K01 3BSE031151R1 is used in process industries where certified safety functions and standard control must operate within the same controller architecture. It supports SIL3-capable applications when configured with the required safety modules and approved engineering environment.

PM865K01 3BSE031151R1
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A process unit loses controller availability during a scheduled shutdown. The replacement CPU arrives, but the system does not return to service because the controller configuration, safety settings, or communication assignments were not properly preserved.
The PM865K01 is not a simple processor swap. In High Integrity systems, the CPU is part of a certified control architecture. Hardware replacement must include configuration validation, firmware compatibility checks, and safety application verification.
Typical Applications
- Oil & Gas Processing – Safety instrumented functions, burner management interfaces, compressor protection logic, and process control applications.
- Chemical Manufacturing – Reactor control, emergency shutdown systems, and critical process interlocks.
- Power Generation – Auxiliary plant controls, boiler systems, and safety-related automation functions.
- Pharmaceutical Production – High-integrity process control requiring documented validation and controlled configuration management.
Technical Pitfalls to Avoid
- Do Not Confuse PM865K01 With Standard AC 800M CPUs
The is part of the High Integrity family. A standard PM864/PM866 replacement is not automatically equivalent. Confirm the safety architecture before substitution.
- Verify Safety Configuration and Firmware
The CPU hardware is only one part of the system. Check Control Builder configuration, safety licenses, firmware revision, and SM81x safety module compatibility before commissioning.
- Preserve Network and I/O Configuration
Ethernet settings, ModuleBus assignments, CEX-Bus communication modules, and redundancy parameters should be documented before removing the original processor.
Related Products
- ABB PM865K02 3BSE031150R1
Redundant processor unit package containing two units with redundancy connection accessories. Used for higher availability AC 800M High Integrity installations. - ABB PM867K01 3BSE076355R1
Higher-performance AC 800M High Integrity processor option. Used in newer installations where replacement or migration is planned. - ABB SM811K01 3BSE018173R1
Safety module used with AC 800M High Integrity controllers to provide SIL safety functionality. Works together with -based safety architectures. - ABB TP830
AC 800M controller baseplate included with the kit. Provides mounting and controller interconnection functions. - ABB PM866AK01 3BSE076939R1
AC 800M processor unit with higher processing capability. Used in newer control applications requiring additional CPU performance. - ABB PM864AK01 3BSE018161R1
Standard AC 800M processor unit. Similar physical platform but different safety certification and application scope compared with . - ABB CI854A PROFIBUS-DP Interface Module
CEX-Bus communication module used for PROFIBUS device integration in AC 800M systems. - ABB CI867 Ethernet/IP Interface Module
Communication module for integrating external Ethernet-based systems into AC 800M architectures.
