PM866AK01 3BSE076939R1 ABB Redundant Power Supply Module -20-70℃ 30 V 20 MA
PM866AK01 3BSE076939R1 Description
The ABB PM866AK01 (3BSE076939R1) is a high-performance central processing unit (CPU) for the AC 800M controller family, serving as the core computing component of ABB Ability™ System 800xA® distributed control systems (DCS). It executes complex control algorithms, manages I/O data, handles system communication, and ensures real-time monitoring and operation for large-scale industrial process control. Designed for high reliability and availability, it supports full hardware redundancy and is widely deployed in mission-critical applications across oil & gas, power generation, chemical, and manufacturing industries. The unit comes as a complete kit including the CPU module, baseplate (TP830), terminators, and a backup battery.
PM866AK01 3BSE076939R1 Key Features
- Powerful Processing: 133 MHz MPC866 processor with fast cycle times (down to 1 ms) for demanding control tasks
- High Memory Capacity: 64 MB RAM (51.389 MB available for applications) + 4 MB Flash PROM for firmware
- Full Redundancy Support: CPU, communication, and I/O redundancy with <10 ms failover time
- Dual Ethernet Ports: 10 Mbps RJ-45 ports for control network (MMS/IAC protocols)
- Dual Serial Ports: RS-232C (COM3) + isolated service port (COM4)
- Modular Expansion: Up to 12 CEX-Bus communication modules; supports 7 optical I/O clusters
- Built-in Diagnostics: LED status indicators, real-time clock, and battery-backed memory
- Robust Design: Wide temperature range, industrial-grade components, and strong EMC immunity
- Certifications: Conforms to CE, UL, cUL, and RoHS standards
- DIN Rail Mount: Compact form factor for easy installation in control cabinets
PM866AK01 3BSE076939R1 Materials & Applications
Materials
- Housing: High-strength, flame-retardant thermoplastic (UL94 V-0)
- Circuit Board: Industrial-grade FR-4 glass epoxy PCB with conformal coating
- Connectors: Nickel-plated copper alloy for corrosion resistance and reliable contact
- Internal Components: Industrial-grade microprocessor, optocouplers, and solid-state capacitors
- Backup Battery: 3.6 V lithium battery for memory retention
Typical Applications
- Oil & Gas: Refinery control, pipeline monitoring, and offshore platform systems
- Power Generation: Boiler control, turbine management, and plant automation
- Chemical & Pharmaceutical: Batch process control, reactor regulation, and safety systems
- Water & Wastewater: Treatment plant automation and distribution network control
- Metals & Mining: Furnace control, material handling, and production line management
- Manufacturing: Assembly lines, packaging machinery, and complex process automation
PM866AK01 3BSE076939R1 Important Parameters
| Parameter |
Specification |
| Part Number |
PM866AK01 |
| Ordering Number |
3BSE076939R1 |
| Brand |
ABB |
| Product Type |
AC 800M CPU Processor Unit |
| Processor |
Freescale MPC866, 133 MHz |
| Memory |
64 MB RAM (51.389 MB user available) |
| Flash Memory |
4 MB (firmware storage) |
| Redundancy |
Full CPU/COM/I/O redundancy, failover <10 ms |
| Communication Ports |
2 × Ethernet (10 Mbps, RJ-45) |
| Serial Ports |
2 × RS-232C (COM3: general; COM4: isolated service) |
| CEX-Bus Modules |
Up to 12 communication modules |
| I/O Clusters |
7 optical ModuleBus clusters |
| Power Supply |
24 V DC (19.2–30 V DC) |
| Current Consumption |
210 mA (typ), 360 mA (max) |
| Power Dissipation |
5.1 W (typ), 8.6 W (max) |
| Backup Battery |
3.6 V lithium (retain memory/clock) |
| Operating Temperature |
-25°C to +60°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
10–90% RH (non-condensing) |
| Dimensions (W×H×D) |
119 × 186 × 135 mm |
| Weight |
1.2 kg (with baseplate) |
| Mounting |
DIN rail (35 mm) |
| Protection |
IP20 |
| Certifications |
CE, UL, cUL, RoHS |
| Kit Includes |
PM866A CPU, TP830 baseplate, terminators, battery |
| Application Support |
32 applications, 64 programs each |
| Cycle Time |
Down to 1 ms per application |
| Origin |
Sweden |
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