ABB PM891K01 3BSE053241R1 is a high-performance redundant central processing unit belonging to ABB Ability ™ System 800xA ® An important component of distributed control systems, designed specifically for the complex control and automation needs of industries such as oil and gas, power generation, and chemical engineering.

technical specifications
Processor: Multi core processor with a main frequency of 450 MHz.
Memory: 256MB RAM.
Communication interface:
2 RJ45 Ethernet ports (CN1, CN2), supporting 10/100 Mbit/s.
1 RJ45 serial port (COM4), isolated design, used for configuration tools.
Scalability:
Supports Communication Expansion Bus (CEX bus), which can connect multiple expansion modules.
Through the Optical Modulus connector, up to 7 clusters of S800 I/O units can be connected, with each unit containing up to 12 modules.
Redundancy function: Supports CPU redundancy, communication redundancy, and power redundancy.
Protection level: IP20.
Working temperature: -20 ° C to+60 ° C.
Weight: Approximately 3.0 kilograms.

Core Features
High performance processing capability: Equipped with multi-core processors and large capacity RAM, it can simultaneously handle multiple tasks and quickly process massive amounts of data, ensuring real-time control and efficient execution of complex operations.
Redundant architecture design: Supports CPU redundancy, communication redundancy, and power redundancy. In the event of a main processor failure, the backup processor can seamlessly take over to ensure the continuous operation of the system.
Flexible Expansion and Communication Capability: Supports multiple communication interfaces and expansion buses, can connect expansion modules and third-party devices, compatible with protocols such as Modbus and Profibus.
High safety and reliability: Built in real-time clock, LED indicator lights, Initiat button, and safety digital interface, with short-circuit protection, fault self diagnosis, and SIL 1 certification.
Application scenarios
Petroleum and natural gas: used for automated control and monitoring of production processes such as refining and chemical engineering.
Power generation industry: applicable to automation control systems for power plants and substations.
Chemical processing: supports real-time control and optimization of complex chemical reaction processes.
Industrial automation: As the core of distributed control systems, it is suitable for scenarios such as motor control and tension control.