ABB PM891K01 3BSE053241R1

The ABB PM891K01 3BSE053241R1 is a high-performance redundant processor unit engineered by ABB for its System 800xA distributed control system (DCS). This module functions as the central processing unit (CPU) for the AC 800M controller series, a core component within the 800xA architecture. Its primary role involves executing control logic, managing communication with I/O modules, and interfacing with the broader System 800xA for seamless configuration, monitoring, and operator control.

The “Redundant” aspect of this unit is vital for applications demanding high availability and fault tolerance. It ensures a smooth, bumpless transfer to a backup processor in the event of a primary unit failure, which effectively minimizes downtime and maintains continuous process operation in critical industrial settings.

The PM891K01 3BSE053241R1 is built for robust performance in complex industrial processes across various sectors like power generation, oil and gas, chemical, pulp and paper, and mining. It delivers significant processing power and reliable communication capabilities, making it an ideal choice for large-scale and critical automation tasks. Its modular design also allows for easy integration into existing or new AC 800M controller setups.

Product Parameters & Specifications

Here are the key parameters and specifications for the ABB PM891K01 3BSE053241R1 Redundant Processor Unit:

Manufacturer: ABB
Model/Part Number: PM891K01 3BSE053241R1
Product Series: ABB AC 800M Controller (part of System 800xA)
Product Type: Redundant Processor Unit / CPU Module

Electrical Parameters:

Power Supply: 24 V DC (Direct Current)
Operating Voltage Range: 19.2 V DC to 30 V DC

Performance & Memory:

Processor Clock Speed: 450 MHz
Memory (DRAM): 256 MB (Megabytes)
Redundancy: Designed for redundant operation, providing high availability.
Cycle Times: Dependent on application complexity, but AC 800M controllers are known for efficient execution of control loops.

Interfaces & Communication:

Ethernet Ports: 2 x RJ45 ports (typically 100Base-TX) for redundant Ethernet communication within the control network.
ModuleBus: Interfaces with other AC 800M modules via the ModuleBus, which serves as the internal communication backbone for I/O and other modules.
Serial Port: RS-232C (likely for local configuration or diagnostics).