ABB PM856 Processor Module

Description

The ABB PM856 Processor Module (model PM856AK01, order code 3BSE066490R1) is a high-performance, modular industrial automation controller designed for the AC 800M system. It comes as an integrated kit with components including the PM856A CPU, TP830 backplane, TB850 CEX bus terminator, TB807 ModuleBus terminator, and a memory backup battery (model 4943013-6). With a protection rating of IP20, it requires installation in a control cabinet and supports DIN rail mounting with a slide-lock mechanism for quick installation and removal.

Key technical specifications include a 24V DC input voltage (±20% range, 19.2-30V DC), maximum input current of 0.5A, and typical power consumption of 10-15W, with a maximum of 7.2W at 24V DC. It features a 24MHz processor, 16MB dynamic RAM (10.337MB available for applications), and non-volatile flash memory (minimum 32MB) to retain operating system, program, and user data during power loss. The module supports multiple communication protocols and interfaces, including Ethernet (Profinet, EtherCAT, DeviceNet), RS-485, and RS-232, enabling seamless integration with other industrial components. Its modular design allows flexible combination with additional I/O and communication modules for scalable automation solutions.