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ABB 3BSE053241R1 PM891K01

1. Product Overview

The ABB 3BSE053241R1 PM891K01 is a high-performance AC 800M Processor Unit designed for ABB System 800xA distributed control systems (DCS). It is one of the most powerful processors in the AC 800M controller family, providing high-speed execution, large application memory, built-in Ethernet communication, and support for advanced industrial automation applications.

The PM891K01 is a single (non-redundant) processor unit package. Redundant configurations can be achieved by combining two PM891K01 units as part of an ABB PM891K02 redundant processor solution.

2. Main Technical Parameters

3. Product Features

High Processing Performance

• 450 MHz industrial processor for demanding control tasks.
• Execution performance of approximately 0.043 ms per 1000 Boolean operations.
• Suitable for large control programs, complex logic processing, and high-volume I/O applications.

Large Memory Capacity

• 256 MB onboard memory.
• Supports large IEC 61131-3 control applications.
• Provides storage capability through flash memory.

Integrated Communication Capability

The PM891K01 includes:

• Two built-in Ethernet ports for Control Network communication.
• One isolated serial service interface.
• CEX-Bus expansion support for additional communication modules.

Redundancy Capability

Although PM891K01 itself is a single processor unit, it supports ABB controller redundancy architecture when paired with another PM891 processor. Redundant configurations can include CPU, communication interfaces, CEX-Bus, and S800 I/O redundancy.

4. Structural Composition

The PM891K01 integrates several functional elements into one controller module:

• CPU processing board
• RAM memory
• Real-time clock
• LED status indicators
• INIT push button
• Secure Digital interface
• Power supply circuitry
• CEX-Bus interface
• Ethernet communication interfaces

5. Expansion Capability

The PM891K01 supports ABB AC 800M modular expansion:

• CEX-Bus communication expansion
  • Supports additional communication interface modules.
  • Up to 12 communication modules can be connected.
• S800 I/O integration
  • Supports optical ModuleBus communication.
  • Can connect up to 7 S800 I/O clusters.
  • Supports up to 84 S800 I/O modules.

6. Application Fields

The ABB PM891K01 is commonly used in:

• Process automation systems
• Oil & gas facilities
• Power generation plants
• Chemical and petrochemical industries
• Water treatment plants
• Mining and metals processing
• Large manufacturing plants
• Continuous production lines

Typical applications include:

• Sequential control
• Motor and drive control
• Process regulation loops
• Batch control
• Safety-related monitoring (non-SIL controller applications)
• Large-scale DCS control strategies

7. Advantages

• High-speed industrial CPU performance
• Large memory capacity for complex applications
• Integrated Ethernet communication
• Flexible AC 800M modular architecture
• Supports controller redundancy configurations
• Designed for continuous industrial operation
• Compatible with ABB System 800xA engineering environment

8. Conclusion

The ABB 3BSE053241R1 PM891K01 is a high-performance AC 800M controller processor designed for demanding System 800xA automation applications. With a 450 MHz processor, 256 MB memory, dual Ethernet communication, and extensive expansion capability, it is suitable for large and complex industrial control systems requiring reliable operation and scalability.