ABB PM867 3BSE0763561 High Integrity Processor

Product Overview

The ABB PM867 (3BSE076356R1) is a high-performance, high-integrity processor unit designed for the AC 800M control system. Engineered for safety-critical environments, it is certified for use in SIL1-SIL3 applications. With a powerful 133 MHz microprocessor and 64 MB of SDRAM, it provides the speed and reliability required for both complex industrial logic and functional safety tasks.

Technical Specifications

• Manufacturer: ABB

• Article Number: 3BSE076356R1 (PM867)

• Processor: MPC866, 133 MHz

• Memory: 64 MB SDRAM / 4 MB Flash PROM

• Safety Integrity Level: SIL1–SIL3 (High Integrity)

• Redundancy: Supported (Switchover $\leq$ 10 ms)

• Power Supply: 24 V DC (19.2–30 V DC)

• Ethernet Ports: 2x 10Base-T (CN1, CN2)

• Serial Ports: COM3 (RS-232C w/ modem), COM4 (Isolated RS-232C)

• Dimensions: 119 mm (W) x 186 mm (H) x 135 mm (D)

• Weight: 1200 g

Key Features

• High-Speed Processing: The 133 MHz clock speed ensures rapid execution of safety logic and standard control algorithms, maintaining deterministic system performance.

• Functional Safety Certification: Specifically designed and certified for High Integrity applications, making it suitable for Emergency Shutdown (ESD) and Fire and Gas (F&G) systems.

• Seamless Redundancy: Supports full CPU redundancy with a switchover time of 10 ms or less, ensuring continuous operation in mission-critical environments.

• Robust Data Retention: Features 64 MB of SDRAM with an internal battery backup (min. 158 hours), which can be extended significantly using external battery units (SB821/SB822).

• Local I/O Capacity: Efficiently manages up to 12 S800 I/O modules via the integrated electrical ModuleBus.

• Isolated Service Port: COM4 is an isolated RS-232C port, ensuring that configuration and service tasks do not interfere with the electrical integrity of the processor.