ABB · PM851AK01 ABB PM851AK01 AC 800M Processor Unit for Compact Control ABB PM851AK01 AC 800M processor package with PM851A CPU, TP830 baseplate, CEX-Bus and ModuleBus terminators, memory-backup battery and single-CPU operation. Type AC 800M processor unit kit System ABB AC 800M / Compact Product Suite Focus 24 MHz, 12 MB, single CPU Brand ABB PM851AK01 availability, lead time and order review Send RFQ Product Introduction PM851AK01 is a single-CPU AC 800M processor package