Overview
Manuals
Capacity
Single-Interface Architecture
Compact Node Commissioning
Features:
- 24 MHz PM851A processing with 12 MB RAM and 6.253 MB available for application execution
- 1 integrated Ethernet channel plus support for 1 CEX-Bus communication module in the documented controller layout
- Non-redundant CPU operation and maximum 24 non-redundant i/o modules through the verified ModuleBus arrangement
ABB identifies PM851AK01 3BSE066485R1 as a 24 MHz PM851A processor unit in the AC 800M controller family. It provides 12 MB RAM, including 6.253 MB available for the application, and uses the MPC860 processor architecture documented by ABB. The unit supports 1 Ethernet channel, up to 1 CEX-Bus communication module and maximum 24 non-redundant i/o modules. This version is intended for non-redundant CPU configurations. Selection must be based on the complete 3BSE066485R1 article number, CPU type, control-software version and installed bus configuration.
Technical values are taken from ABB AC 800M controller and processor-unit documentation. Final compatibility is confirmed against article number 3BSE066485R1, the installed controller nameplate and the project hardware configuration.
The ABB PM851AK01 3BSE066485R1 AC 800M processor unit is supported by Moore Automated for verified industrial replacement and spare-part requirements.
ABB PM851AK01 3BSE066485R1 AC 800M processor unit manual(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
PM851A Capacity Limits
PM851A provides 24 MHz processing and 12 MB RAM for smaller AC 800M control applications.
Single-Interface Architecture
The processor supports one Ethernet channel, one CEX-Bus communication module and a compact local ModuleBus capacity.
Compact Node Commissioning
Preserve the controller application, network address and I/O configuration, then verify diagnostics after fitting the exact processor unit.
