Overview
ABB PM866AK02 Processor Unit
Configured for redundant control execution in ABB AC 800M and System 800xA platforms, the ABB PM866AK02 (PM866 Processor Unit) provides direct processor control, application execution, and communication management functions.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PM866AK02 |
| Article Number | 3BSE081637R1 |
| Brand | ABB |
| Product Type | Processor Unit |
| System Platform | AC 800M / System 800xA |
| Processor Type | MPC866 |
| Clock Frequency | 133 MHz |
| Performance | 0.09 ms per 1000 Boolean operations |
| Memory | 64 MB |
| RAM Available for Application | 51.389 MB |
| Firmware Storage | 4 MB Flash PROM |
| Flash Memory for Storage | Yes |
| Redundancy Support | Yes |
| High Integrity | No |
| Redundant Configuration Switch Over Time | Max 10 ms |
| Applications per Controller | 32 |
| Programs per Application | 64 |
| Diagrams per Application | 128 |
| Tasks per Controller | 32 |
| Number of Cycle Times | 32 |
| Minimum Application Cycle Time | Down to 1 ms |
| Power Supply | 24 V DC (19.2-30 V DC) |
| Power Consumption | 210 mA typ / 360 mA max at +24 V DC |
| Power Dissipation | 5.1 W typ / 8.6 W max |
| Backup Battery | Lithium, 3.6 V |
| Clock Synchronization | 1 ms between AC 800M controllers by CNCP protocol |
| Ethernet Channels | 2 |
| Ethernet Interface | IEEE 802.3, 10 Mbit/s, RJ-45 female |
| Control Network Protocol | MMS and IAC |
| Recommended Control Network Backbone | 100 Mbit/s switched Ethernet |
| RS-232C Interfaces | 2 |
| CEX Bus Communication Modules | Max 12 |
| CEX Bus Supply Current | Max 2.4 A |
| Modulebus I/O Capacity | Max 96 I/O modules single CPU / 84 I/O modules redundant CPU |
| Modulebus Scan Rate | 0-100 ms depending on I/O configuration |
| Operating Temp | 0 to +55 deg C |
| Storage Temp | -40 to +70 deg C |
| Relative Humidity | 5 to 95 %, non-condensing |
| Protection Class | IP20 according to EN 60529 |
| Rated Isolation Voltage | 500 V AC |
| Dimensions | 119 mm W x 186 mm H x 135 mm D |
| Weight | 2700 g including base |
| Origin | Sweden |
Firmware Flash Compatibility and Industrial Control Architecture
The PM866AK02 integrates flash-based firmware storage and processor resources for ABB AC 800M controller configurations. Therefore, the controller maintains application execution data, communication services, and controller diagnostics through its internal processing architecture.
The unit supports ABB control network communication through MMS and IAC protocols. In addition, two Ethernet channels provide network connectivity through IEEE 802.3 interfaces. The processor also manages CEX bus modules and Modulebus I/O expansion, allowing scalable I/O density configurations within the AC 800M platform.
The redundant CPU configuration supports a maximum switch-over time of 10 ms. Furthermore, the controller provides firmware flash compatibility for stored system software and application management functions.
Frequently Asked Questions
Q: Does the ABB PM866AK02 support redundant controller configurations?
A: Yes. The PM866AK02 supports redundant CPU configurations with a maximum switch-over time of 10 ms.
Q: What communication interfaces are integrated into the PM866AK02?
A: The processor unit includes two Ethernet channels and two RS-232C interfaces. It supports MMS and IAC control network communication protocols.
Q: How many I/O modules can the PM866AK02 manage through Modulebus?
A: The controller supports up to 96 I/O modules in single CPU configuration and up to 84 I/O modules in redundant CPU configuration.
Field Installation Guidelines
Install the PM866AK02 on the designated AC 800M controller base unit and verify correct mechanical locking before applying power.
Maintain proper cabinet grounding and use appropriate industrial wiring practices for Ethernet, RS-232C, CEX bus, and Modulebus connections. Separate communication cables from high-voltage power conductors to reduce electrical interference.
Verify the 24 V DC supply polarity and voltage range before startup. The controller requires a stable DC supply connection within the specified operating range.
During redundant installation, confirm that both processor units have compatible firmware versions and correct network configuration before enabling redundancy functions.
Provide adequate cabinet ventilation to maintain the specified operating temperature range. Inspect connectors, mounting hardware, and communication interfaces during scheduled maintenance intervals.
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