PM851K01 | Redundant Processor Unit | ABB | 3BSE018168R1

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PM851K01 | Redundant Processor Unit | ABB | 3BSE018168R1 | PM851K01

Equipped with an industrial-grade Cortex-A8 720MHz embedded processor, along with 512MB DDR2 RAM and 1GB Flash storage, it supports complex algorithms and multi-task parallel processing. It also supports CPU redundancy, CEX bus redundancy, communication interface redundancy, and S800 I/O redundancy, ensuring seamless takeover by the backup unit in case of main processor failure and guaranteeing continuous system operation. As the "brain" of the industrial control system, it is responsible for logic control, process monitoring, data acquisition, and communication, and is suitable for DCS (Distributed Control System), PLC (Programmable Logic Controller), and motion control scenarios.

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Description

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　　Other names for PM851K01 3BSE018168R1:

　　Redundant Control Unit PM851K01 3BSE018168R1

　　Redundant Input/Output Unit PM851K01 3BSE018168R1

　　Redundant Analog Unit PM851K01 3BSE018168R1

　　Product Positioning and Series Affiliation

　　Core Functions: As the "brain" of the industrial control system, it is responsible for logic control, process monitoring, data acquisition, and communication. It is suitable for DCS (Distributed Control System), PLC (Programmable Logic Controller), and motion control scenarios.

　　Technical Specifications and Hardware Configuration

　　Processor: Equipped with an industrial-grade Cortex-A8 720MHz embedded processor, coupled with 512MB DDR2 RAM and 1GB Flash storage, supporting complex algorithms and multi-tasking parallel processing.

　　Communication Interfaces:

　　Dual 1000M Ethernet ports (supporting IEEE1588 protocol, redundant Ethernet communication).

　　Two RJ45 serial ports (COM3 is RS-232C, supporting modem control; COM4 is an isolated serial port, compatible with configuration tools).

　　Two USB 2.0 interfaces, two industrial CAN bus interfaces, and VGA display output.

　　Expansion Capabilities: Supports SD card expansion storage, built-in real-time clock (RTC) and temperature sensor, adaptable to a wide temperature range of -40~80℃.

　　Redundancy Design: Supports CPU redundancy, CEX bus redundancy, communication interface redundancy, and S800 I/O redundancy, ensuring seamless takeover by the backup unit in the event of a main processor failure, guaranteeing continuous system operation.

　　Features and Industry Applications

　　High Reliability: SIL certified (IEC 61508), compliant with TÜV safety standards, suitable for high-safety applications in power, petrochemical, and pharmaceutical industries.

　　Flexible Expansion: Supports protocols such as Profibus DP, Modbus, Ethernet/IP, and OPC UA, and can be expanded with remote I/O modules (e.g., CI854, CI861) to adapt to different scale control needs.

　　Real-Time Control: Supports millisecond-level cycle tasks, providing PID self-tuning, batch control, electronic cam functions, etc., meeting the needs of high-speed motion control and process optimization.

　　Typical Applications:

　　Process Industries: Process control in petrochemical, water treatment, and pharmaceutical industries.

　　Power Systems: Power plant control, power grid monitoring, and substation automation.

　　Manufacturing: Automotive production lines, steel smelting, robot control, and conveyor belt coordination.

　　Redundancy Configuration

　　Primary/Standby CPU Units: Requires a dual-CPU redundant pair with another PM865K02 unit, achieving 1ms-level clock synchronization via CNCP protocol. Primary/standby switchover time is ≤10ms. For example:

　　PM865K02 + PM865K02: Dual units are mutually redundant, supporting full redundancy of CPU, CEX bus, communication interface, and S800 I/O.

　　PM861K02 3BSE018160R1: In some configurations, it works in conjunction with the PM865K02 to form a redundant architecture (e.g., the 3BSE018160R1 kit).

　　High Integrity Functional Modules:

　　Security Authentication Module: Requires cooperation with SM81x series modules (e.g., SM811K01 3BSE018173R1, SM812K01 3BSE072270R1,PM891K01 3BSE053241R1, PM891K02 3BSE053242R1 ) to achieve SIL 2/3 certification. Combined with SIL software upgrades, it supports safety-critical control and business logic integration. I/O Expansion Modules: Compatible with S800 I/O modules (such as AI890 3BSC690071R1, AO810 BSE008522R1), supporting CEX bus expansion, with a maximum support of 12 CEX bus modules, adaptable to local/remote I/O redundancy.

　　Communication and Network Modules

　　Protocol Support: Requires a matching communication module to achieve multi-protocol compatibility, such as:

　　CI854 3BSE030220R1: Profibus DP-V1 interface module.

　　CI873 3BSE056899R1: Ethernet/IP communication module.

　　CI867K01 3BSE043660R1: Modbus TCP interface module.

　　Network Architecture: Dual Ethernet ports (CN1/CN2) support redundant Ethernet, working with a 100Mbit/s switched backbone to ensure real-time communication of the MMS/IAC protocol. Redundancy Mechanism and Advantages

　　Dual-CPU Architecture: Real-time synchronization of primary and backup processors, failover time<50ms, ensuring uninterrupted system operation.

　　Modular Design: Supports hot-swapping, facilitating maintenance and reducing downtime costs.

　　Enhanced Security: Built-in hardware encryption module prevents unauthorized access; supports firewalls and secure encrypted communication.

　　Compatibility and Ecosystem

　　Software Support: Seamless integration with ABB 800xA systems or the Compact Control Builder programming environment, supporting IEC 61131-3 standard logic development.

　　I/O Expansion: Compatible with S800 I/O series (such as digital, analog, and SOE modules), supporting power redundancy and module-level redundancy configurations.

　　Installation Options: Offers compact, extended, and integrated installation options to adapt to different rack space requirements.

　　In summary, the PM851K01 3BSE018168R1, as the core redundant processor of the ABB AC800M series, is a key component for ensuring high system availability in critical industrial scenarios due to its high-performance processing capabilities, multi-level redundancy design, and broad industrial protocol compatibility. Its modular design and expandability allow it to flexibly adapt to diverse needs from traditional manufacturing to smart factories, making it a crucial choice for achieving high-reliability control in industrial automation.

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