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| Place of Origin: | Germany |
| Brand Name: | ABB |
| Certification: | COO & COC |
| Model Number: | PM861AK01 |
PM861AK01 3BSE018157R1 ABB Programmable logic controller (PLC) CPU module
The ABB PM861AK01 (manufacturer part number 3BSE018157R1) is a robust and widely deployed Central Processing Unit (CPU) module for the ABB AC 800M programmable automation controller within the Ability™ System 800xA distributed control system (DCS). Designed for medium-complexity industrial applications, the PM861AK01 delivers reliable real-time control, seamless integration with I/O networks, and full support for redundancy—making it a trusted choice in power generation, transmission & distribution, water treatment, oil & gas, and manufacturing facilities worldwide.
Product Overview: ABB PM861AK01 (3BSE018157R1)
| ABB Order Code | PM861AK01 |
| Manufacturer Part Number | 3BSE018157R1 |
| System Platform | ABB AC 800M controller in System 800xA |
| Module Type | Main CPU / Controller Processor |
| Processor Architecture | 32-bit RISC processor optimized for industrial control |
| Application Memory | 4 MB (for user program and data) |
| Execution Performance | Typical scan time of 1–5 ms for standard logic (depending on program size) |
| Redundancy Support | Full hot-standby CPU redundancy when paired with a second PM861AK01 and redundant baseplate (e.g., TB850) |
| I/O Capacity | Supports up to 1,024 I/O modules via S800 I/O bus and remote I/O networks |
| Programming Environment | Fully supported in ABB Control Builder M (v4.1 SP1 or later) |
| Operating Temperature | 0°C to +60°C |
| Certifications | CE, UL, CSA, IEC 61000-6-2/4 (EMC), IEC 61508 (suitable for SIL 2 applications), IEC 61850-3 (for substation environments) |
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