ABB PM861AK01 High-Performance CPU Controller Module_Ningde Androld Automation Equipment Co.,Ltd.

June 02, 2026

ABB PM861AK01 High-Performance CPU Controller Module

ABB PM861AK01 is a compact, high-reliability CPU module belonging to the ABB AC 800M series, designed for the System 800xA integrated architecture. It serves as the core control unit for mid-range industrial automation, delivering powerful real-time processing, rich communication interfaces, and robust diagnostic capabilities.

Description

Product Introduction

ABB PM861AK01 (order code 3BSE018157R1) is a mid-range processor module in the AC 800M PAC family, optimized for System 800xA. It executes control logic, handles data acquisition, and coordinates communication between I/O modules and field devices. With an 800 MHz processor and industrial-grade design, it ensures stable, long-term operation in harsh environments for both process and discrete automation.

Model Interpretation

PM stands for Processor Module; 861 denotes the AC 800M mid-range CPU series. AK01 indicates the specific hardware revision and configuration for ordering, inventory, and system design.

Technical Parameters

Processor: 800 MHz 32-bit RISC CPU, VxWorks real-time OS
Memory: 16 MB total (4 MB application, 8 MB load, non-volatile RAM for data retention)
I/O Capacity: Up to 1,000 digital + 500 analog points (with S800 I/O)
Power Supply: 24 V DC (19.2–30 V DC), backplane-powered
Operating Temperature: -20°C to +60°C; storage -40°C to +85°C
Humidity: 5%–95% RH, non-condensing
Protection: IP20 (industrial enclosure required)
Dimensions: 233.4 × 133.4 × 66.7 mm; weight approx. 2.3 kg
Redundancy: Non-redundant; supports CPU redundancy via paired modules

Interface and Communication Configuration

Ethernet: 2 × RJ45 (10/100 Mbps), TCP/IP, Modbus TCP, EtherNet/IP
Serial: COM3 (RS-232 with modem signals); COM4 (isolated RS-232/485 for programming/field devices)
Expansion: CEX-Bus for S800 I/O and communication modules
Indicators: LED for power, run, fault, communication; reset button; CompactFlash slot for backup
Protocols: Profibus DP, Modbus RTU, IEC 61131-3 compliant

Core Functions

Executes high-speed real-time control logic (1 ms minimum cycle) for process and discrete control
Performs centralized data collection, historical logging, and parameter management
Supports alarm handling and equipment self-diagnosis for fast fault localization
Enables modular expansion with S800 I/O for scalable system design
Facilitates programming via Control Builder M (IEC 61131-3: ST/FBD/LAD/SFC)
Ensures data integrity with non-volatile RAM and CompactFlash backup

Application Scenarios

Process Industry: Power plants, chemical, oil & gas, water treatment, metallurgy
Discrete Manufacturing: Automotive, food & beverage, packaging, plastics
Infrastructure: District heating, building management, smart grid monitoring
Mid-Range Automation: Small-to-medium DCS, PLC retrofits, and integrated control systems

Operation and Maintenance Instructions

Install on standard DIN rail or panel with adequate ventilation; avoid direct heat and vibration
Use shielded cables for all communication wiring; separate power and signal cables to reduce interference
Configure and download programs via Control Builder M before commissioning
Regularly check LED status, connection integrity, and CompactFlash backup health
The module has no user-serviceable parts; replace the entire unit upon permanent hardware failure
Store in dry, clean environment; operating humidity 5%–95% non-condensing

Contact Info