ABB 3BSE053241R1 PM891K01 is a high-performance processor unit in the AC 800M series, with the following main features and specifications:

🔧 Core architecture and functionality

processor design

PM891K01 is an integrated unit that includes a power supply, CPU board, and unit terminator

Built in microprocessor, RAM memory, real-time clock, LED status indicator, start button, and secure digital interface

Excluding internal battery, relying on external power source

Communication capability

Ethernet ports: Provide dual RJ45 Ethernet ports (CN1, CN2) for controlling network connections.

Serial port: 1 isolated RJ45 serial port (COM4), dedicated for configuration tool access.

Expansion Bus: Supports Communication Expansion Bus (CEX Bus), expandable communication interface units, and can enhance bus availability through BC810 interconnect units.

Module bus: The fiber optic module bus supports connecting up to 7 groups of S800 I/O unit clusters (each group containing 12 units).

Redundancy and reliability

Support CPU redundancy (including CEX bus, communication interface, and S800 I/O redundancy), significantly improving system availability.

Built in redundant Ethernet communication ports ensure network connection stability.

Through T Ü V's SIL safety level certification (supporting high integrity functionality), it complies with the IEC 61508 standard.

📊 FEATURES

Hardware identification: Each unit is equipped with a unique Ethernet address for hardware identification.

Environmental adaptability: IP20 protection level, no additional storage module required, suitable for industrial environments.

Integration: Can be configured in ABB 800xA control system to achieve integration of complex process control and safety functions

technical support

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