ABB PM851A 3BSE066484R1 AC 800M Controller Processor Unit

Description

The PM851A 3BSE066484R1 processor module offers a cost-effective, high-performance solution for process control. With a 32-bit RISC architecture and 8 MB of RAM, it efficiently handles control loops and discrete logic. It features dual Ethernet ports for networking and an integrated ModuleBus for high-speed synchronization with local S800 I/O clusters. Designed for industrial reliability, it uses passive cooling and a fanless housing to ensure durability in factory environments.

Specifications

• Manufacturer: ABB

• Series: AC 800M

• Model Number: PM851A

• Order Number: 3BSE066484R1

• Product Type: Processor Unit

• Microprocessor: 32-bit RISC

• Onboard RAM: 8 MB

• Onboard Flash: 4 MB

• Dimensions: 186 mm x 119 mm x 135 mm

• Weight: 1.15 kg

• Interfaces: 2x RJ45 Ethernet, 2x RS-232, 1x ModuleBus

• Nominal Voltage: 24 V DC (19.2 - 30 V DC)

• Mounting: 35mm Standard DIN rail

• Protection Rating: IP20

Features

• Efficient Processing Core: Utilizes a specialized 32-bit architecture to ensure consistent execution times for critical regulatory control strategies.

• Integrated Ethernet Support: Built-in dual ports allow for versatile network topologies and reliable connectivity to supervisory HMI systems.

• Local I/O Connectivity: Features a high-speed ModuleBus link for direct, low-latency interfacing with S800 I/O expansion modules.

• Redundant Power Input: Designed with dual power terminals to enhance system availability and protect against local power supply failures.

• Compact Modular Design: Optimized for vertical mounting on DIN rails, facilitating easy integration into space-constrained control enclosures.

• Industrial Safety Integrity: Includes mechanical safety keying to ensure correct seating on baseplates and protection of the internal bus system.