PM856AK01 3BSE066490R1 ABB | AC800M Processor for Process Control

Product Description

The ABB PM856AK01 3BSE066490R1 is a high-performance processor unit (CPU) designed for ABB’s AC 800M controllers within the System 800xA platform. It provides fast deterministic control, substantial memory capacity, and robust communication interfaces for complex industrial automation tasks.

This processor package includes the PM856A CPU, TP830 baseplate, TB850 CEX-bus terminator, TB807 ModuleBus terminator, and a backup battery, ensuring immediate deployment and reliable operation. Moreover, its dual-core PowerPC processor delivers cycle times ≤1 ms, allowing precise control for mission-critical applications.

Engineered for demanding industrial environments, the PM856AK01 maintains stable performance in power generation, oil & gas, chemical plants, and manufacturing industries. Therefore, it is ideal for applications requiring high reliability, safety compliance, and real-time process control.

Technical Specifications

• Model: PM856AK01

• Part Number: 3BSE066490R1

• Type: Processor Unit (CPU)

• System Compatibility: AC 800M controllers, System 800xA

• Processor: Dual-core PowerPC, 1.8 GHz

• Memory: 2 GB DDR3 RAM + 512 MB Flash

• Cycle Time: ≤1 ms deterministic control

• I/O Capacity: Up to 1024 points (expandable)

• Communication Interfaces: PROFINET, OPC UA, Modbus TCP

• Engineering Tools: Control Builder 800 (IEC 61131‑3 languages)

• Diagnostics: CNCP clock sync, LED indicators, INIT button

• Operating Temperature: –25°C to +70°C

• Certifications: UL 508, SIL 3, ATEX Zone 2

• Dimensions (L × W × H): Standard CPU board size

• Weight: 3 kg

• Package Contents: CPU, baseplate, terminators, backup battery

• Application Areas: Power generation, oil & gas, chemical plants, manufacturing

FAQ

Q1: What type of processor does the PM856AK01 use?
A1: It uses a dual-core PowerPC processor operating at 1.8 GHz for high-speed control.

Q2: How much memory is available for applications?
A2: The module provides 16 MB from System 800xA FP4, with 10.337 MB RAM for user applications.

Q3: What communication protocols are supported?
A3: PROFINET, OPC UA, and Modbus TCP allow flexible connectivity with distributed systems.

Q4: Can this CPU handle high I/O demands?
A4: Yes, it supports up to 1024 I/O points and is expandable for larger automation tasks.