Description

Brief Product Description

The ABB PM857K02 (3BSE088386R1) is a high-performance AC 800M processor unit designed for safety-critical and business-essential automation within the Ability System 800xA framework. This TÜV-certified controller supports both SIL 2 and SIL 3 applications, providing a scalable and redundant architecture for demanding industrial processes.

​Product Description

The PM857K02 (Order Number: 3BSE088386R1) serves as a central intelligence hub for the ABB AC 800M control platform. This controller specifically addresses the needs of complex industrial environments that require the integration of standard control logic with high-integrity safety functions. By utilizing a powerful microprocessor and onboard RAM, the unit handles real-time execution of control applications with high precision. Furthermore, the PM857K02 features a CompactFlash interface for persistent data storage and a real-time clock for synchronized event logging across the Distributed Control System (DCS).

Safety and High-Integrity Capabilities

High-integrity functionality distinguishes the 3BSE088386R1 from standard processing units. When paired with an SM812 module and SIL-certified software, this controller provides a TÜV-certified environment for safety-critical tasks. It manages up to 128 I/O signals under a single high-integrity scheme, ensuring that critical safety loops remain functional even during hardware disruptions. Because the unit supports S800 I/O High Integrity systems, operators can scale their safety architecture from simple non-critical loops to fully certified SIL 3 operations without replacing the core processor.

Network Connectivity and Redundancy

Reliability remains a cornerstone of the PM857K02 design. The base plate incorporates two RJ45 Ethernet ports dedicated to Control Network connectivity, alongside two RJ45 serial ports for configuration and isolated RS-232C communication. To maximize uptime, the unit supports full CPU redundancy and a redundant CEX-Bus. This architecture ensures that if the primary processor encounters a fault, the secondary unit assumes control instantaneously. Consequently, this seamless transition prevents process interruptions in energy, chemical, and manufacturing facilities where continuous operation is mandatory.

Technical Specification Table