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Description
The ABB PM856K01 3BSE018104R1 is a complete processor unit kit for the AC 800M series, serving as the core controller within ABB’s System 800xA Distributed Control System (DCS). Unlike a standalone module, this kit includes the CPU, baseplate, terminators, and backup battery required for immediate deployment. Designed for high-availability applications in industries like power generation and petrochemicals, it features a 32-bit RISC processor, supports hot-standby redundancy with millisecond-level switchover, and manages extensive I/O networks via ModuleBus and CEX bus expansion.
Application Scenarios
A 600 MW thermal power plant was experiencing unplanned turbine trips due to single-point failures in its legacy control system. Engineers replaced it with an ABB System 800xA architecture centered on the PM856K01 processor kit. The module’s dual-redundant configuration ensured that a primary CPU fault triggered an automatic switchover in under 50 ms, preventing a boiler trip during peak load. The kit’s included TP830 baseplate simplified rack wiring, while the backup battery preserved critical data during grid fluctuations, reducing recovery time by 60%.
Parameter
| Main Parameter | Value / Description |
|---|---|
| Product Model | ABB PM856K01 (3BSE018104R1) |
| Manufacturer | ABB |
| Product Category | Processor Unit Kit (AC 800M Series) |
| CPU Architecture | 32-bit RISC Processor (High-Performance Industrial Grade) |
| Processing Speed | ~1 GHz (varies by source; significantly faster than older PM856 variants) |
| Memory | 32 MB RAM (Application + Data), 2 MB Flash for firmware |
| I/O Capacity | Supports up to 96 I/O modules (via ModuleBus/CEX expansion) |
| Communication Ports | 2 x RJ45 Ethernet (CN1/CN2), 2 x RS-232 (COM3/COM4) |
| Supported Protocols | MMS, IAC, Modbus, PROFIBUS-DP (via expansion modules) |
| Redundancy Support | Yes (Hot Standby) – Full controller redundancy with <50 ms switchover |
| Safety Integrity | SIL 3 Capable (system-dependent configuration) |
| Supply Voltage | 24 V DC (19.2 – 30 V DC range) |
| Power Consumption | ~4.32 W (typical), 7.2 W (max) |
| Operating Temperature | 0 °C to +60 °C (industrial grade) |
| Mounting | DIN Rail (via TP830 Baseplate) |
| Dimensions (LxHxW) | ~220 mm x 80 mm x 35 mm (module only) |
| Weight | ~1.0 kg (kit approximate) |
