3BSE076939R1 PM866AK01: CPU revision and project compatibility
ABB 3BSE076939R1 PM866AK01 is an AC 800M processor-unit package. ABB lists a 133 MHz processor clock, 64 MB memory and a 24 V DC supply range of 19.2–30 V DC for the PM866AK01 entry.
Technical data for identification
| Technical item | Verified value / selection note |
|---|---|
| ABB article number | 3BSE076939R1 |
| Processor package | PM866AK01 |
| Clock frequency | 133 MHz |
| Memory | 64 MB total; application availability depends on firmware |
| Supply | 24 V DC, 19.2–30 V DC specified range |
| Network interfaces | Two control-network Ethernet ports on base plate |
| Controller software | Check 800xA Control Builder and firmware compatibility |
For an automation component, trace every field signal or network link to its terminal unit, station interface, controller configuration and software revision. Define the safe operating response before maintenance begins.
Field checks and acceptance
Commissioning of 3BSE076939R1 PM866AK01 should follow a controlled procedure. Back up the running application and diagnostics, identify the controller's network addresses, and follow the site change-control procedure. After loading, prove I/O communication, time synchronization, alarms, control execution and operator visibility before production handover.
Capture the as-left settings, test points, abnormal-state response and revision of 3BSE076939R1 PM866AK01. Include photographs of its nameplate and terminal arrangement so the next service event can be traced.
Where this configuration fits
3BSE076939R1 PM866AK01 should be assessed in the actual equipment arrangement. A controller replacement is a system-level task: application backup, hardware-library version, I/O topology, communications, redundancy design and startup sequence all matter. Plan a controlled cutover and rollback before removing an in-service CPU.
A request for 3BSE076939R1 PM866AK01 should identify the host system, process or motor duty, available supply and the expected normal and fault behavior. This makes the selection review specific to the installed equipment.
Order-code and compatibility review
For 3BSE076939R1 PM866AK01, Confirm the exact K01 package contents, base plate, firmware, controller licensing and connected CEX-bus or S800 modules. Similar PM866 designations may refer to different redundancy packages or revision combinations.
Before substituting 3BSE076939R1 PM866AK01, compare the complete label with the engineering drawing, ABB configuration data, installed accessories and site approval record. A partial designation or a similar enclosure cannot establish interchangeability.
Related configuration references
The following 3BSE076939R1 PM866AK01 family references are identification aids. Ratings, options and approvals can differ; each complete designation needs its own review.
- PM866AK01 3BSE076939R1
Information to send with a replacement inquiry
Provide the exact model 3BSE076939R1 PM866AK01, quantity, serial or revision, application conditions, required connection and approval, and a legible nameplate photograph. Ask for confirmation of accessories and any approved successor.
Keep 3BSE076939R1 PM866AK01 in the asset register and maintenance record as the exact search phrase. Record who approved the selected device, what was tested and whether the installed configuration differs from the base family specification.
Final engineering decision
Approve 3BSE076939R1 PM866AK01 only when the verified ratings and ordered options match the equipment record. Resolve every discrepancy in code, connection, supply, firmware or process limit before energizing the system.
The published family values for 3BSE076939R1 PM866AK01 support identification and initial selection. The device nameplate, matching ABB instructions and the site's approved design determine final suitability.
