Overview
Manuals
PM861A
Redundant Hardware Matching
Migration Considerations
Features:
- 48 MHz PM861A processing with 16 MB RAM and 7.155 MB available for application execution
- 2 integrated Ethernet channels plus support for 12 CEX-Bus communication modules in the documented controller layout
- Redundant CPU operation with maximum 10 ms switch-over and maximum 96 non-redundant or 84 redundant i/o modules through the verified ModuleBus arrangement
ABB identifies PM861AK01 3BSE018157R1 as a 48 MHz PM861A processor unit in the AC 800M controller family. It provides 16 MB RAM, including 7.155 MB available for the application, and uses the MPC860 processor architecture documented by ABB. The unit supports 2 Ethernet channels, up to 12 CEX-Bus communication modules and maximum 96 non-redundant or 84 redundant i/o modules. CPU redundancy and a maximum 10 ms switch-over are supported in a correctly engineered pair. Selection must be based on the complete 3BSE018157R1 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 3BSE018157R1, the installed controller nameplate and the project hardware configuration.
The ABB PM861AK01 3BSE018157R1 AC 800M processor unit is supported by Moore Automated for verified industrial replacement and spare-part requirements.
ABB PM861AK01 3BSE018157R1 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.
PM861A Legacy Profile
PM861A uses a 48 MHz MPC860 processor with 16 MB RAM in the documented Classic controller generation.
Redundant Hardware Matching
Check that both redundant CPUs, termination items and software levels match before restoring the controller pair.
PM862 Migration Considerations
ABB directs new installations to PM862K01; verify application memory, controller firmware, redundancy and bus interfaces before migration.
