Featuring built-in dual RJ45 Ethernet ports (CN1/CN2) supporting redundant network architecture; compatible with protocols such as Profibus, Modbus, EtherNet/IP, and OPC UA; connects up to 12 expansion modules (such as S800 I/O clusters) via a communication expansion bus; supports fiber optic ring network redundancy; fault recovery time <10ms; and works in conjunction with supporting equipment such as PM864K01 3BSE018150R1, S800 I/O modules, and BC810 to build a highly reliable and scalable control system architecture, meeting the stringent real-time control and safety requirements of industries such as power, petrochemicals, and intelligent manufacturing. With its high-performance processing capabilities, flexible redundancy architecture, broad protocol compatibility, and stringent security certifications, it has become the preferred solution for high-availability systems in the industrial automation field. It is widely used in industries such as power, petrochemicals, pharmaceuticals, and intelligent manufacturing, meeting complex control needs and safety standards, and is a key component in building redundant control systems.

　　Many products are not yet listed. Please contact us for more product information.

　　If the product model differs from the displayed image, the model number shall prevail. Please contact us for specific product images; we will arrange to take photos in our warehouse for confirmation.

　　We have 76 shared warehouses worldwide, so it may sometimes take several hours to accurately return the information to you. We apologize for the inconvenience. Of course, we will respond to your inquiries as soon as possible.

　　Other names for PM891K01 3BSE053241R1:

　　Redundant Processor Unit PM891K01 3BSE053241R1

　　Redundant Input/Output Unit PM891K01 3BSE053241R1

　　Redundant Analog Unit PM891K01 3BSE053241R1

　　The PM891K01 3BSE053241R1 is a high-performance redundant controller from the ABB AC800M series. It is a core processing unit for industrial automation, supporting CPU redundancy, communication redundancy, and power supply redundancy. It is suitable for high-reliability applications in power, petrochemical, pharmaceutical, and intelligent manufacturing industries.

　　Series Related: Belongs to the AC800M family, along with PM864K01 3BSE018150R1 and PM861K01 3BSE018105R1. It is compatible with 800xA controller builders and third-party monitoring software, and supports SIL 1/2 security certification (with SM812 module).

　　Core Features and Technical Parameters

　　Redundancy Capabilities:

　　CPU Redundancy: Dual-processor hot standby configuration, fault switching time <10ms, ensuring uninterrupted system operation.

　　Communication Redundancy: Built-in dual RJ45 Ethernet ports (CN1/CN2), supporting redundant network architecture; compatible with Profibus, Modbus, EtherNet/IP, OPC UA, and other protocols.

　　Power Supply Redundancy: Supports redundant power input, reducing downtime risk.

　　I/O Redundancy: Expandable to up to 7 S800 I/O clusters (12 units per cluster) via CEX bus, supporting bus redundancy configuration.

　　CEX Bus Redundancy: Connects up to 12 expansion modules (such as S800 I/O clusters) via the communication expansion bus, supports fiber optic ring network redundancy, and has a fault recovery time of <10ms.

　　Hardware Specifications:

　　Processor: Multi-core architecture, 450MHz clock speed, equipped with 256MB RAM + 4GB flash memory, supports multi-tasking parallel processing.

　　Interfaces: 2×Ethernet (CN1/CN2), 1×isolated serial port (COM4), CEX bus expansion interface (supports 7 clusters/84 modules), fiber optic interface (multimode 2Km/single-mode 20Km).

　　Physical Characteristics: IP20 protection rating, operating temperature 0~55℃, dimensions 280mm×245mm×105mm, weight 2.1kg, DIN rail mounting design.

　　Software Compatibility: Supports Control Builder M programming (IEC 61131-3 standard), integrates 800xA system, provides simulation debugging functions, and is compatible with VxWorks real-time operating system.

　　Redundant Controller Collaboration:

　　PM864K01 3BSE018150R1/PM864K02 3BSE018153R1: Form a dual-CPU redundant architecture with PM891K01 3BSE053241R1 , supporting hot standby switching (fault switching time <50ms). Bus redundancy is achieved via CEX bus connection to BC810 3BSE031154R1/BC820 3BSE071500R1.

　　PM861AK01 3BSE018157R1/PM861AK02 3BSE018160R1: Redundant CPU modules, supporting expansion to SIL 2/3 certification, suitable for high-availability scenarios.

　　I/O Modules:

　　S800 Series: Supports local/remote I/O expansion via ModuleBus (electrical/fiber optic) connection. A single controller supports up to 7 I/O clusters (12 units per cluster, totaling 84 modules).

　　Profibus/Modbus Modules: Such as CI854 3BSE025961R1 (Profibus master station), CI858 3BSE018135R1 (fiber optic communication), supporting multi-protocol compatibility.

　　Expansion and Communication Modules:

　　BC810 3BSE031154R1 / BC820 3BSE071500R1: CEX bus expansion units, improving bus redundancy and scalability.

　　Ethernet Modules: Built-in dual RJ45 redundant Ethernet ports, supporting network redundancy architecture.

　　Serial Port Modules: Isolated COM4 serial port for local debugging and configuration tool connection.

　　Power Supply and Auxiliary Equipment:

　　Redundant Power Supply Modules: Such as PM866K02 3BSE050199R1, supporting 24V DC redundant power supply to ensure continuous system operation.

　　Safety Modules: Such as SM812, enhancing system safety certification (SIL 2/3).

　　Key Features and Advantages

　　Redundancy Capability: Triple redundancy design for CPU, communication, and I/O, with a fault switching time of <50ms, ensuring continuous system operation.

　　Scalability: Modular design supports flexible configuration, expanding I/O clusters via CEX bus and enabling remote expansion via fiber optic ModuleBus.

　　Compatibility: Compatible with all AC800M series controllers (such as PM851, PM856, PM860), supporting Control Builder M programming and IEC 61131-3 standard.

　　Environmental Adaptability: IP20 protection rating, operating temperature 0~60℃, electromagnetic interference resistant (IEC 1000-4-2), suitable for harsh industrial environments.

　　Application Scenarios and Case Studies

　　Typical Applications:

　　Process Control: Precise temperature/pressure/flow control in the chemical, petrochemical, and pharmaceutical industries; generator/transformer monitoring in power systems.

　　High Reliability Scenarios: Intelligent manufacturing production lines, ship automation, water treatment systems, supporting SIL 2/3 safety instrumented systems.

　　Instrumentation: Building automation (lighting/air conditioning control), logistics automation (warehouse conveyor belt monitoring).

　　Configuration Example:

　　Redundant Architecture: Dual PM891K01 3BSE053241R1 modules connected via a CEX bus, working with BC810 modules to achieve bus redundancy, supporting expansion to 7 S800 I/O clusters.

　　Communication Expansion: Connecting up to 84 I/O modules via fiber optic Modulebus, supporting protocols such as Profibus DP and Foundation Fieldbus.

　　Application Scenarios and Case Studies

　　Typical Applications:

　　Industrial Process Control: DCS systems in the chemical, petroleum, and power industries (e.g., 660MW unit control, oil and gas pipeline monitoring).

　　High-Security Scenarios: Used in conjunction with SIL-certified modules for Safety Instrumented Systems (SIS) and critical business control.

　　Smart Manufacturing: Main controller for automated production lines, enabling multi-device collaboration and real-time optimization.

　　Configuration Example:

　　Redundant Architecture: Dual PM891K01 3BSE053241R1 units connected via a CEX bus, with bus redundancy achieved using a BC810K02.

　　I/O Expansion: A single controller supports a cluster of 12 S800 I/O units, expandable to multiple network segments via fiber optic expansion modules.

　　Installation and Maintenance Considerations:

　　Installation Specifications:

　　Mechanical Installation: Must be installed in an IP20-rated control cabinet, with adequate ventilation space to prevent high-temperature accumulation; use DIN rails or rack mounting.

　　Electrical Connection: Use shielded twisted-pair cable for Ethernet connection; serial ports must be equipped with isolation devices; power supply must be redundant, with an input voltage of 24V DC.

　　Maintenance Recommendations:

　　Firmware Update: Upgrade firmware via the 800xA system or Compact Flash card to ensure compatibility with the latest features.

　　Fault Diagnosis: Quickly locate hardware/communication faults using system logs, LED status indicators, and built-in diagnostic functions.

　　Regular Inspection: Regularly check power supply and communication interface connection status, and maintain a dry and dust-free cabinet environment.

　　Certifications and Compliance

　　Safety Certification: SIL 1 certified, compliant with IEC 61508 standard, EMC certified, and adaptable to environments with strong electromagnetic interference.

　　Environmental Compliance: Compliant with RoHS directive, materials are recyclable, and supports international standards such as UL, CE, and ATEX.

　　Network Security: Built-in firewall, encrypted communication, and user access control prevent unauthorized access.

　　Summary: As the core redundant controller of the ABB AC800M series, the PM891K01 3BSE053241R1 , in collaboration with supporting equipment such as the PM864K01 3BSE018150R1, S800 I/O modules, and BC810, constructs a highly reliable and scalable control system architecture, meeting the stringent real-time control and safety requirements of industries such as power, petrochemicals, and intelligent manufacturing. With its high-performance processing capabilities, flexible redundancy architecture, broad protocol compatibility, and stringent security certifications, it has become the preferred solution for high-availability systems in the industrial automation field. It is widely used in industries such as power, petrochemical, pharmaceutical, and intelligent manufacturing, meeting complex control requirements and safety standards, and is a key component in building redundant control systems.

　　All products on this website are special products, and market prices are constantly fluctuating.

　　Please refer to customer service for a specific quote, as the price is not accurate as it is for new products.

　　Please confirm the model, product, price, and other detailed information with customer service before placing an order. This website is currently in use.

　　New products are available for sale; please contact customer service for further information.

Recommended related products:
3BSE018105R1 PM861K01
3BSE076359R1 PM866A
3BSE053240R1 PM891
3BDH000002R1 PM802F
3BDH000032R1 PM803F
3BSE010798R1 PM820-2
3BSE010800R1 PM825-1
3BSE018105R1 PM861K01
3BSE018161R2 PM864AK01-eA
3BSE030193R1 PM865
PM864AK01 3BSE01816R1
3BSE031151R1 PM865K01
PM866-2 3BSE050201R1
3BSE076355R1 PM867K01
3BSE081638R1 PM867K02
PM866K01 3BSE050198R1
PM864AK01-eA 3BSE018161R2
PM825-1 3BSE010800R1
PM861AK01 3BSE018157R1
PM864AK01 3BSE018161R1
PM866K01 3BSE050198R1
PM865K01 3BSE031151R1
PM866 3BSE050200R1
PM803F 3BDH000530R1
PM825 3BSE010796R1
More......