Process Automation Control Solution – ABB PM866AK01 | AC800M Series
Where This Product Is Used
The ABB PM866AK01 (part number 3BSE076939R1) is a high-performance processor unit from ABB’s AC800M controller family, purpose-built for demanding distributed control system (DCS) environments. Engineers specify this module across a wide range of critical industrial applications:
- Power Generation & Utilities – Turbine control, boiler management systems (BMS), and grid-connected generation plants requiring deterministic real-time control.
- Oil & Gas (Upstream & Downstream) – Wellhead automation, pipeline SCADA integration, refinery process control, and compressor station management.
- Chemical & Petrochemical Plants – Continuous process control for reactors, distillation columns, and batch processing units with SIL-rated safety loops.
- Pulp & Paper Manufacturing – Coordinated drive control, digester automation, and quality management systems.
- Water & Wastewater Treatment – SCADA-integrated pump station control, dosing systems, and plant-wide process automation.
- Mining & Minerals Processing – Conveyor sequencing, crusher control, and flotation cell automation.
- Marine & Offshore Platforms – Vessel automation, ballast control, and offshore production platform DCS.
Technical Specifications
| Manufacturer | ABB |
| Model / Part Number | PM866AK01 / 3BSE076939R1 |
| Product Series | AC800M (AC 800M) |
| Module Type | Central Processor Unit (CPU) |
| Processor Architecture | 32-bit RISC |
| Program Memory | 32 MB Flash |
| Data Memory (RAM) | 64 MB SDRAM |
| Communication Ports | 2 × Ethernet (10/100 Mbps), 1 × RS-232 (service port) |
| Fieldbus Support | PROFIBUS DP, FOUNDATION Fieldbus, Modbus, IEC 61850 (via CI modules) |
| Redundancy | Hot-standby CPU redundancy supported |
| Scan Cycle Time | Configurable; minimum ~1 ms |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -40 °C to +70 °C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Power Supply | 24 V DC (via backplane) |
| Weight | Approx. 400 g |
| Mounting | AC800M S800 I/O backplane / rack |
| Programming Environment | ABB Control Builder M (IEC 61131-3: LD, FBD, ST, IL, SFC) |
| Firmware | Compatible with AC800M firmware 5.x and above |
Why Engineers Specify This Model
- Proven AC800M Platform – The AC800M is ABB’s flagship DCS controller, deployed in thousands of installations globally. The PM866 is the high-capacity CPU variant, offering expanded memory and processing headroom for complex control strategies.
- Hot-Standby Redundancy – Supports bumpless switchover between primary and standby CPUs, critical for continuous process industries where unplanned downtime is unacceptable.
- Open Connectivity – Dual Ethernet ports enable simultaneous connection to the plant control network and engineering workstation, with support for OPC UA and standard industrial protocols.
- IEC 61131-3 Compliance – Full multi-language programming support in ABB Control Builder M allows reuse of existing function blocks and libraries across projects.
- Scalable I/O Architecture – Integrates seamlessly with ABB S800 I/O modules, CI communication interfaces, and third-party fieldbus devices via gateway modules.
- Long Product Lifecycle – ABB’s commitment to long-term spare parts availability makes the PM866AK01 a reliable choice for brownfield upgrades and greenfield projects alike.
Complete System Bill of Materials
A typical AC800M control station built around the PM866AK01 includes the following components:
- PM866AK01 (3BSE076939R1) – Central Processor Unit (this item)
- TB807 (3BSE039025R1) – Processor Unit Termination Board
- SD802F (3BSE020520R1) – Power Supply Module, 24 V DC
- SB821 (3BSE018109R1) – Battery Unit for memory backup
- CI854B (3BSE030220R1) – PROFIBUS DP Communication Interface
- CI867K01 (3BSE043660R1) – Modbus TCP Communication Interface
- S800 I/O Modules – AI810, AO810, DI810, DO810 (as required by application)
- TK850V007 – Ethernet cable, shielded, for controller network
- AC800M Rack / Backplane – Sized per I/O count
Contact Konmask for complete BOM pricing and availability on multi-module orders.
Compliance & Industry Standards
- IEC 61131-3 – Programmable Controller Programming Languages
- IEC 61850 – Communication Networks and Systems in Substations (via CI module)
- IEC 61511 / IEC 61508 – Functional Safety (SIL-capable configurations)
- CE Marking – European Conformity (EMC Directive, Low Voltage Directive)
- UL / cUL Listed – North American safety certification
- ATEX / IECEx – Hazardous area compliance available via certified I/O modules
- DNV GL – Marine type approval (applicable configurations)
- RoHS Compliant – Restriction of Hazardous Substances
Quality Assurance & Sourcing
Konmask.com sources the ABB PM866AK01 through verified industrial automation supply channels. Every unit offered undergoes the following quality process before dispatch:
- Visual Inspection – Enclosure integrity, connector condition, label legibility, and firmware version verification.
- Functional Power-On Test – Module is powered and boot sequence confirmed prior to packaging.
- Anti-Static Packaging – Shipped in ESD-safe bags with foam cushioning inside double-wall cartons.
- Traceability – Serial number and batch records retained for warranty and audit purposes.
- Warranty – 12-month replacement warranty against manufacturing defects.
We supply both new surplus and factory-refurbished units. Condition is clearly stated on each listing. Contact us if you require factory-new units with full ABB documentation.
How to Source This Part
- Add to Cart – For immediate single-unit or small-quantity orders, proceed directly through the online store.
- Request a Quote – For orders of 3+ units, OEM pricing, or project BOM sourcing, email support@konmask.com with your quantity and required delivery date.
- Lead Time – In-stock units ship within 1–3 business days. Out-of-stock units: typical lead time 7–21 business days depending on sourcing channel.
- Export & Cross-Border Orders – We ship internationally. HS Code: 8537.10 (Boards, panels, consoles for electric control). Contact us for export documentation, EXW/CIF/DDP Incoterms, and customs invoice requirements.
- Payment – T/T (bank transfer), PayPal, and major credit cards accepted. Net-30 terms available for approved corporate accounts.
Application-Specific FAQ
Q: Can the PM866AK01 replace an older PM864A or PM865A in an existing AC800M rack?
A: Yes. The PM866AK01 is backward-compatible with existing AC800M backplanes and S800 I/O. A firmware upgrade and project re-download via Control Builder M is required. Verify your existing CI module firmware versions before migration.
Q: Is CPU redundancy supported without additional hardware?
A: Hot-standby redundancy requires two PM866AK01 units and a redundancy cable (TK212A, 3BSE003476R1). The redundancy switchover is bumpless and transparent to the process.
Q: What is the maximum number of I/O points supported?
A: A single PM866AK01 can manage up to 64 S800 I/O modules across multiple racks via optical ModuleBus, supporting thousands of I/O points depending on module mix and scan cycle configuration.
Q: Can this module communicate with ABB System 800xA?
A: Yes. The PM866AK01 is fully supported by ABB System 800xA DCS. It integrates via the plant control network (PCN) Ethernet connection and is configured through Control Builder M within the 800xA engineering environment.
Q: Do you provide the ABB software license with the module?
A: Hardware only. ABB Control Builder M software licenses are managed separately through ABB’s software licensing system. Contact ABB or your local ABB channel partner for software licensing.
Q: What is the difference between PM866AK01 and PM866AK02?
A: The AK02 variant includes an integrated SD card slot for extended data logging and recipe storage. Functionally, both variants are equivalent for standard control applications. Confirm your project requirements before selecting the variant.
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