ABB PM891

The ABB PM891 module is the Central Processing Unit in the ABB AC800M series controller, which is the core of the entire control system. It is responsible for executing control procedures, processing input and output signals, and communicating with other modules. PM891 module is widely used in industrial process control, power system automation and other fields because of its high performance, strong reliability and good scalability.

Product name
English: ABB PM891 CPU unit
English: ABB PM891 Central Processing Unit

Product description
The PM891 module is a modular component installed in the cabinet, usually with other ABB AC800M modules (such as I/O modules, communication modules) together to form a complete control system. It provides powerful computing power, can handle complex control algorithms, and has real-time response capabilities.

Main features and advantages
High performance: The use of high-performance processors, processing speed, can meet the complex control needs.
High reliability: redundancy design is adopted to ensure reliable operation of the system.
Strong scalability: Support a variety of I/O modules and communication modules, can flexibly expand the function of the system.
Easy configuration: Provides intuitive configuration tools to facilitate user Settings.
Good compatibility: Seamless integration with ABB’s 800xA system.
Product parameters (part)
Parameter PM891
Processor High-performance embedded processor
Memory 64MB-256MB
Flash memory is used to store programs and data
Two Ethernet ports
Communication interface supports a variety of communication protocols, such as Modbus, OPC UA, etc
Power supply 24V DC
Operating temperature 0°C ~ 55°C

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