ABB PM866AK02 3BSE081637R1 Redundant Processor Unit. Package including: 2 pcs PM866A, CPU. 2 pcs TP830, Baseplate, width =115mm. 2 pcs TB807, ModuleBus terminator. 1 pcs TK850, CEX-bus expansion cable. 1 pcs TB851, RCU-Link cable. 2 pcs Battery for memory backup (4943013-6) 1 for each CPU. The CPU board contains the microprocessor and RAM memory, a real-time clock, LED indicators, INIT push button, and a CompactFlash interface.
ABB AC 800M controller is a family of rail-mounted modules, consisting of CPUs, communication modules, power supply modules and various accessories. Several CPU modules are available that vary in terms of processing power, memory size, SIL-rating, and redundancy support. Each CPU module is equipped with two Ethernet ports for communication with other controllers and for interaction with operators, engineers, managers, and higher level applications. A Flash memory card can be inserted into a slot in the CPU module to store the application and data.