ABB AC800M 3BSE053241R1 PM891K01 Processor Unit

The ABB AC800M PM891K01 Processor Unit (3BSE053241R1) is a high‑performance CPU/controller module designed for the ABB AC800M distributed control system (DCS) platform, making it ideal for complex industrial automation tasks in manufacturing, energy, petrochemical, chemical, and utility processes. This unit includes the PM891 CPU module, providing robust processing capabilities for complex control tasks. It also features the TB850 CEX-Bus terminator, the TB853 RCU control link terminator, and a power plug, ensuring reliable communication and power management within the AC800M system. Engineered for durability and precision, this processor unit delivers stable, high-speed performance for demanding industrial environments.It serves as the central processing engine in an AC800M system, executing control logic, managing extensive I/O networks, and coordinating communication across plant‑level automation.

Model: AC800M 3BSE053241R1 PM891K01
Processor: 32‑bit industrial controller core (450 MHz clock)
Memory: ~256 MB total, ~208.99 MB available for applications with on‑board flash storage for program and configuration data
Power Supply: 24 V DC (19.2 – 30 V DC) via AC800M backplane
Communication:

• 2 × Ethernet (10/100 Mbit/s) ports for network/SCADA communication
• 1 × Isolated serial port (COM4) for configuration/debugging tools

Performance: 0.043 ms per 1000 Boolean operations (high‑speed control execution)
Protection Class: IP20 industrial cabinet rating
Power consumption +24 V typ/max: 660/750 mA
Power dissipation: 15.8 W (18 W max)

PM891K01 is a high-performance processor unit of the ABB AC 800M series (order number: 3BSE053241R1), mainly used in the ABB Ability System 800xA automation system.
The PM891K01 is a high-performance processor in the AC 800M series and can be used as an upgrade replacement for the following models:

To build a redundant system or replace the entire kit:
PM891K02 3BSE053242R1
The PM891K01 redundant processor kit includes: 2 × PM891K01 processors + CEX-bus extension cable + RCU data link/control link cable.
Note: When using PM891K02 for hot-swapping replacement, BC810K02 must be ordered separately (not included in the kit).
PM891K01-eA (order number 3BSE053241R2) is no longer sold and has been replaced by PM891K01 (3BSE053241R1).

• Central Control Performance: The AC800M 3BSE053241R1 PM891K01 Processor Unit delivers robust processing power to execute complex control and logic tasks with high speed and reliability, making it suited for large‑scale automation and continuous process control.
• Built‑In Communication Interfaces: Dual Ethernet ports support high‑speed network connectivity for real‑time communication with HMI/SCADA, MES/ERP interfaces, and third‑party devices. The isolated serial port enables secure local configuration access.
• Redundancy and High Availability: While the unit itself does not include internal battery backup, it supports hot‑standby CPU redundancy architectures for mission‑critical applications where system uptime is essential.

Is ABB AC800M 3BSE053241R1 PM891K01not the part you are wanting?
Check out the rest of our website to see what else we have to offer!

➪Process Automation & Distributed Control Systems (DCS) - Core controller for large chemical, petrochemical, power, and water treatment plants.
➪Manufacturing & Utility Control - Central processing unit for complex sequential control and real‑time monitoring.
➪Energy & Power Generation - High‑availability control for turbines, generators, and plant safety systems.
➪Oil & Gas Processing - Control logic execution and field device integration in upstream, midstream, and downstream automation.

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