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ABB PM856AK01 3BSE066490R1 – AC 800M High-Performance Processor Unit
Product Overview
The ABB PM856AK01 3BSE066490R1 is a high-performance processor unit, a core component of ABB’s AC 800M distributed control system (DCS). It integrates an MPC860 processor to deliver stable and efficient control for industrial processes, supporting complex control strategies and seamless data exchange. This unit addresses the challenge of handling large-scale control tasks with high precision, ensuring reliable operation in industries such as power generation, chemicals, and manufacturing. It works with ABB’s 800xA Control Builder for easy configuration, while its robust design adapts to harsh industrial environments, reducing maintenance needs and unplanned downtime.
Technical Specifications — PM856AK01 3BSE066490R1
| Parameter | Value |
|---|---|
| Product Model | PM856AK01 3BSE066490R1 |
| Manufacturer | ABB |
| Product Type | AC 800M Processor Unit |
| Power | 24V DC (19.2-30V DC); Typical 180mA / Max 300mA |
| Communication / Protocol | Ethernet (IEEE 802.3), Profibus DP, Modbus |
| Operating Temperature | -25°C to +70°C |
| Mounting | Rack-mounted (control room installation) |
| Dimensions (HxWxD) | 140mm × 100mm × 220mm |
| Weight | 0.8kg |
| Typical Interfaces | 2 Ethernet ports (RJ-45), 2 RS-232C ports, CEX bus interface |
| Compliance | CE, EMC, UL |
ABB PM856AK01 3BSE066490R1
Key Features and Benefits — PM856AK01 3BSE066490R1
- 24MHz clock frequency and 0.46ms execution speed for 1000 boolean operations, ensuring fast and accurate control command execution.
- 16MB memory (10.337MB available for applications) and 2MB flash memory for firmware, supporting extensive program storage and future upgrades.
- Seamless integration with ABB 800xA Control Builder, enabling easy configuration, debugging, and lifecycle management.
- Redundant power supply status input and built-in 3.6V lithium backup battery, enhancing system reliability and data retention.
- Supports up to 32 applications, 64 programs per application, and cycle times as low as 1ms, adapting to diverse industrial control needs.
Related Models
- 3BSE066485R1 (PM851AK01): Entry-level AC 800M processor unit, suitable for small-scale control applications.
- 3BSE088385R1 (PM857K01): High-performance processor with enhanced processing power for complex DCS systems.
- 3BSE082895R1 (PM858K01): Advanced processor unit with extended I/O capacity for large industrial processes.
- 3BSE066495R1 (PM860AK01): Premium processor with higher memory and communication speed for critical control tasks.
Installation and Maintenance — PM856AK01 3BSE066490R1
- Install in a control room rack, ensuring proper alignment with AC 800M chassis and compliance with ABB wiring specifications.
- Use anti-static equipment during handling to prevent component damage from electrostatic discharge.
- Routine maintenance includes checking power supply stability, cleaning interface connectors, and verifying firmware versions via 800xA Control Builder.
- Avoid hot-swapping the unit; power off the system completely before installation or replacement.
- Utilize built-in diagnostic tools to monitor performance and resolve communication or hardware issues efficiently.
