Product Description

Overview

The ABB PM864 (PM864A) is a high-performance CPU module in the ABB Ability™ System 800xA AC800M family. It functions as the central processing unit for distributed control systems (DCS) and PLC networks, delivering robust multitasking, high-speed computation, and advanced diagnostics for complex industrial operations.

Key Technical Features

High-Performance Processor
Equipped with a dual-core 96 MHz architecture, the PM864 handles multiple control tasks efficiently while supporting large-scale I/O networks of up to 10,000 points.

Redundancy and Fault Tolerance
Supports full CPU redundancy, enabling seamless backup operation with no interruption to critical processes. Data and state synchronization between primary and secondary CPUs ensures high system availability.

Communication and Protocol Support
Two independent Ethernet ports allow redundant network communication. Supports multiple industrial protocols, including Profibus DP, Profinet IO, Modbus TCP, and Ethernet/IP.

Robust Industrial Design
Designed to operate from −30°C to +70°C, the PM864 withstands harsh conditions with 4 kV surge protection (IEC 61000-4-5), EMC compliance, and SIL2 safety certification.

Scalable and Modular Architecture
Compatible with a wide range of I/O modules and baseplates, the PM864 integrates seamlessly into distributed automation networks and supports future system expansion.

Applications

• Large-scale DCS and PLC networks

• Process control in chemical, power, and oil & gas industries

• Safety-critical automation requiring high availability and redundancy

Technical Specifications

FAQ

Q: Can two PM864 CPUs be used in a redundant setup?
A: Yes, full redundancy is supported, with automatic failover to maintain continuous operation.

Q: What industrial protocols are supported?
A: Profibus DP, Profinet IO, Modbus TCP, and Ethernet/IP.

Q: Is the PM864 suitable for harsh environments?
A: Yes, it operates from −30°C to +70°C and meets EMC and surge protection standards.

Q: How does it compare to other AC800M modules?
A: PM864 offers 512 MB RAM and higher I/O capacity than PM861 or PM860. For larger memory needs, PM866 or PM867 are recommended.