Original ABB PM891 3BSE053240R1 controller CPU module for AC800M System800xA DCS, industrial process automation replacement spare part.

Product Overview

ABB PM891 3BSE053240R1 is high‑performance processor module for ABB AC800M controller under System800xA DCS platform. It executes control logic, processes field I/O signals and completes data interaction with upper system, supports 1+1 redundant configuration to guarantee uninterrupted running of critical process, widely used in power, petrochemical, metallurgy and pulp‑paper industry for system maintenance and upgrade.

Key Features

• High‑performance industrial processor, complies with IEC 61131‑3 programming standard
• Supports 1+1 CPU hot‑standby redundancy, fast fault automatic switch‑over
• Dual Ethernet ports, supports multiple mainstream industrial communication protocols
• Hot‑swap function, allows on‑site replacement without system shutdown
• Rich built‑in diagnostic function and watchdog for fault detection
• CEX‑Bus expansion interface for connecting S800 series I/O modules

• Compact modular structure for rack installation

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Technical Specifications

• Brand: ABB
• Model: PM891
• Part Number: 3BSE053240R1
• Series: AC800M / System800xA
• Power Input: 24V DC
• Interfaces: Dual Ethernet, RS232 configuration port, CEX‑Bus
• Programming Standard: IEC 61131‑3
• Operating Temperature: 0℃‑60℃

• Application: Process control DCS main controller

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Compatibility

Matches ABB S800 I/O modules, CI series communication interface modules, applicable to System800xA DCS system overhaul, spare‑parts replacement and system upgrade.