Product Short Description
PM891K01 is a high-performance, redundant CPU module within ABB Ability System 800xA. It provides the real-time processing backbone for large distributed control systems in oil & gas, power generation, chemical, and other process industries .
Technical Specifications
-
Processor: Multi-core CPU, 450 MHz clock
-
Memory: 256 MB RAM
-
Ethernet: 2× RJ45 ports (10/100 Mbit)
-
Serial: 1× RJ45 RS-232/485 (COM4) for service tools
-
Expansion: Communication Extension Bus (CEX) for additional modules
Description
-
I/O Link: Optical Modulebus supporting up to seven clusters of S800 I/O (12 modules per cluster)
-
Redundancy: CPU, Ethernet, and power-supply redundancy ready
-
Power: 24 VDC nominal
-
Operating Temp: –20 °C to +60 °C
-
Protection: IP20
-
Weight: ≈ 3.0 kg
Core Features
-
Triple redundancy: seamless switch-over in < 1 ms on CPU or communication failure
-
Hot-swap capability: replace module without stopping the process
-
High-speed processing: 62 µs loop cycle for demanding control algorithms
-
Protocol compatibility: Modbus TCP/RTU, Profibus, OPC UA, and more
-
Built-in diagnostics: LEDs, INIT button, and SIL 1 certified safety functions
-
Tool support: ABB Control Builder M (IEC 61131-3 LD, ST, FBD, SFC)
Typical Applications
-
Continuous process control: distillation, cracking, polymerization reactors
-
Power plant DCS: boiler control, turbine governor, generator excitation
-
Pipeline operations: compressor stations, valve control, leak detection
-
Water treatment: coagulation dosing, pump scheduling, SCADA integration
-
Manufacturing: paper machines, rolling mills, robotic coordination
Advantages
-
Scalable from tens to thousands of I/O points via CEX and S800 I/O
-
Low maintenance: fault self-diagnostics and modular design reduce MTTR
-
Global support: standard spare worldwide, 365-day warranty
Reviews
There are no reviews yet.