| Feature | Specification |
| 🛡️ Product Model | PM864-1A |
| 🏷️ Part Number | 3BSE018165R1 |
| 📦 Assembly ID | 3BSE018162R1 (PM864A) |
| 💻 CPU Type | Motorola PowerPC (high-performance) |
| ⚡ Power Requirements | 24 V DC |
| 🔌 Communication | Built-in PROFIBUS DP and CEX bus |
| ⚙️ System Compatibility | ABB Ability™ System 800xA |
| 🌡️ Operating Temp | +5°C to +55°C |
The ABB PM864-1A is a high-performance, processor-based unit designed for the Control Builder environment within the System 800xA platform. The 3BSE018165R1 is the core processor board, while the 3BSE018162R1 (PM864A) represents the full assembly. This unit manages logic execution, regulatory control, and process communication, providing the high processing speed and memory capacity required for complex industrial automation tasks in power and process industries.
Product News
The PM864A family remains a vital component of the legacy ABB 800xA control network. While newer generations of the AC 800M controller series (such as the PM891) offer expanded memory and faster clock speeds, the PM864-1A continues to be highly favored for its proven stability and direct compatibility with existing distributed control system (DCS) nodes in established plants.
Operation & Usage Instructions
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Redundancy Setup: The PM864A supports redundancy; ensure the “Primary” and “Backup” units are connected via the synchronization link cable.
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Initialization: Upon power-up, the unit will run a boot sequence. The “RUN” LED should turn steady green if the application is loaded correctly.
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Configuration: Load the control project using the ABB Control Builder software connected via the CEX bus or Ethernet interface.
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Battery Replacement: The unit includes a lithium battery for memory backup; ensure this is replaced periodically as per the system maintenance schedule to prevent loss of volatile data during power cycles.
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Firmware: Ensure the firmware version of the 3BSE018165R1 matches the specific system configuration requirements to prevent communication mismatches.
Product Operation
The processor operates by executing cyclic tasks defined in the Control Builder project. It reads inputs from I/O modules, performs logic calculations (Boolean, PID, etc.), and writes outputs to the process. The unit continuously monitors the integrity of the process bus; if a critical failure occurs, the redundancy module (if equipped) will trigger a bumpless transfer to the backup processor to ensure zero downtime in the control loop.
Q&A
Q: What is the difference between PM864-1A and PM864A?
A: The PM864-1A (3BSE018165R1) is often designated as the specific processor module part, while the PM864A (3BSE018162R1) refers to the complete unit assembly including the base and surrounding hardware.
Q: Can the PM864-1A be upgraded to a faster model?
A: Yes, the PM864A series is generally compatible with the same base plates as the PM865 or PM891, though a project reconfiguration and download are required.
Q: What do the red/yellow LEDs on the front indicate?
A: A flashing red LED typically indicates a hardware fault or a processor stop condition. A yellow LED indicates that the unit is currently in “Backup” mode (if configured in a redundant pair).
