Description
The ABB PM861AK01 is a high-performance CPU module designed for the AC 800M controller platform. It functions as the central intelligence for distributed control systems, providing robust execution of complex control logic and seamless communication across industrial networks.
Technical Parameters
- Model: PM861AK01 (3BSE018157R1)
- Microprocessor: 48 MHz RISC
- Memory: 16 MB RAM / 8 MB Flash
- Clock Frequency: High-accuracy internal real-time clock
- Redundancy: Supports CPU redundancy for high-availability systems
Product Specifications
- Dimensions: 186mm x 119mm x 47mm
- Weight: 1.1 kg (including base)
- Communication Ports: 2x Ethernet, 2x RS-232, 1x ModuleBus
- Power Dissipation: 6W typical

Application Fields
- Power Plant Control Systems
- Pulp and Paper Processing
- Chemical and Pharmaceutical Production
- Oil and Gas Automation (Upstream and Downstream)
Origin & Operating Requirements
- Origin: Sweden (ABB Control Technologies)
- Temperature: 5°C to 55°C (Operating); -25°C to +70°C (Storage)
- Humidity: 5% to 95% non-condensing
- Protection Class: IP20 (IEC 60529)
Q&A
- Q: Is the BC810 CEX-bus interconnection unit included?
- A: The PM861AK01 is a kit that typically includes the CPU and relevant base components; check specific package contents for interconnects.
- Q: Can this processor handle SIL3 safety applications?
- A: The PM861A is a standard controller; for safety-critical applications, the High Integrity (HI) versions are required.
- Q: How is the firmware updated?
- A: Firmware is updated via the ABB Compact Control Builder or 800xA Engineering software.
