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PRODUCT POSITION:HOMEPRODUCT—PM856AK01 3BSE066490R1
PM856AK01 3BSE066490R1
Key Features ✔ Dual-CPU Redundancy – Hot standby for continuous operation (99.999% availability) ✔ Powerful Processing – 800 MHz CPU with 512 MB RAM ✔ Extensive I/O Support – Connects to S800, S900, and Profibus/Fieldbus modules ✔ Industrial Robustness – Operates in -40°C to +70°C environments ✔ Cybersecurity – Supports role-based access & encryption (IEC 62443 compliant) ✔ Seamless Integration – Fully compatible with ABB System 800xA Technical Specifications Parameter Specification Model Number PM856AK01 (3BSE066490R1) CPU 800 MHz PowerPC Memory 512 MB RAM / 128 MB Flash Redundancy Yes (1:1 hot standby) Communication Ethernet, PROFIBUS, Modbus TCP, OPC UA I/O Capacity Up to 250,000 I/O points (system-wide) Power Supply 24V DC (redundant inputs) Certifications CE, UL, ATEX (optional) Typical Applications Oil & Gas (refineries, offshore platforms) Power Plants (turbine control, SCADA) Chemical/Petrochemical (batch processing) Pharmaceuticals (GMP-compliant automation) Water Treatment (pump station control)
DESCRIBE
The ABB PM856AK01 (3BSE066490R1) is a high-performance, fault-tolerant controller from ABB’s AC 800M series, designed for mission-critical process automation in industries such as oil & gas, power generation, and chemical processing. It delivers ultra-reliable real-time control with advanced redundancy features.

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Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司 吉ICP备2024020526号-1
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