ABB PM891K01 3BSE053241R1

1. Product DescriptionThe ABB AC800M 3BSE053240R1 PM891 is a core processor unit of the AC800M series and also a critical component of the System 800xA distributed control system (DCS). It is designed to meet the complex control requirements of industrial automation scenarios such as petrochemicals, power plants, and metallurgy.
   Equipped with a high-performance 32-bit RISC processor, it can efficiently execute complex control strategies like PID cascade control and advanced process control, and process a large number of real-time I/O signals. It adopts a 1:1 dual – machine hot – redundancy architecture. When the main controller breaks down, it can switch to the standby unit seamlessly within 150ms, which meets the IEC 61508 SIL 2 safety level requirements and avoids production losses caused by unplanned shutdowns.
   This module has a modular and compact design, integrating components such as a power supply and a CPU board. It supports seamless integration with a full range of AC800M I/O modules and can connect with third-party PLCs and smart instruments through multiple mainstream protocols. In addition, it has built – in hardware health monitoring and fault diagnosis functions, which can store fault records and facilitate engineers to quickly locate and solve problems.
2. 
3. Product Parameters

   Parameter	Details
   Processor	32-bit RISC processor, 450MHz 主频
   Memory	256MB RAM and 256MB flash memory
   Input Voltage	24V DC
   Rated Power	40W
   Operating Temperature	-25°C to +70°C
   Communication Interfaces	2 RJ45 Ethernet ports, 1 isolated RJ45 serial port (COM4), SD card interface
   Supported Protocols	Ethernet, Modbus, TCP/IP, PROFIBUS DP, EtherNet/IP, etc.
   Control Capacity	Supports up to 800 control loops and 4000 I/O points
   Digital Inputs	16 channels
   Current Rating	100 – 400A