Product Details
Overview
The ABB PM856AK (3BSE066490R1) is a compact and efficient processor unit designed for the AC 800M control system family. Operating at 24 MHz with 16 MB of memory, it provides stable performance for distributed control and process automation tasks. This unit enables flexible configuration and high reliability for medium-scale applications requiring consistent communication and control integrity.
Package Contents
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PM856A CPU module
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TP830 Baseplate for mounting
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TB850 CEX-bus terminator
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TB807 ModuleBus terminator
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4943013-6 Backup battery for memory retention
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No license included
Technical Specifications
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Model Number: PM856AK
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Part Number: 3BSE066490R1
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Manufacturer: ABB
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Series: AC 800M
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Processor Speed: 24 MHz
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Memory Capacity: 16 MB
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Product Type: Central Processor Unit
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Net Weight: 1.1 kg
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Dimensions (W × H × D): 130 mm × 200 mm × 155 mm
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Customs Tariff Number: 85371091
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HS Code Description: Boards and panels for electrical control and distribution under 1000 V
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Dangerous Goods Classification: UN3091-PI970, Class 9
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Battery Type: Portable lithium battery
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Battery Quantity: 1
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Battery Weight: 9 g
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RoHS Compliance: Conforms to EU Directive 2011/65/EU
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WEEE Category: 5 – Small Equipment (No external dimension over 50 cm)
Application Scenarios
The PM856A processor unit is suitable for:
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Industrial process control systems using AC 800M architecture
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Power generation, water treatment, and chemical process control
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Automation systems requiring stable communication and moderate data processing capability
FAQ
Q: What distinguishes the PM856A from the PM860K01 processor unit?
A: The PM856A is a lower-performance CPU with a 24 MHz clock and 16 MB memory, suitable for medium-sized control applications. The PM860K01, in contrast, supports higher processing capacity and redundancy for more complex systems.
Q: Is the PM856A compatible with all AC 800M modules?
A: Yes, it integrates seamlessly with AC 800M I/O and communication interfaces such as CI854A, CI855, and CI856 modules.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Master Acceptance Testing: Understanding FAT and SAT in Industrial Control Systems
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) serve as critical quality assurance gateways in complex industrial control systems. Both procedures verify that programmable logic controllers (PLCs), distributed control systems (DCS), and associated field devices meet strict functional specifications. However, executing these tests effectively requires clear delineation between off-site staging and final field commissioning.
Industrial Networking Essentials: Demystifying Hubs, Switches, and Routers in Control Systems
Industrial automation relies heavily on robust networking infrastructure to connect programmable logic controllers (PLCs), distributed control systems (DCS), and human-machine interfaces (HMIs). Modern factory automation environments generate vast amounts of real-time operational data across deterministic networks. Understanding the structural differences between hubs, switches, and routers ensures optimal traffic segmentation, minimizes latency, and maintains high network availability.
Safety Relays in Industrial Automation: Fundamentals, Design Standards, and Fail-Safe Architecture
Safety relays form the bedrock of functional safety in modern factory automation, preventing catastrophic equipment failure and protecting plant personnel. While standard electromechanical relays handle basic load switching, they lack the redundant diagnostics required for high-risk industrial environments. Modern industrial automation platforms—including programmable logic controllers (PLCs) and distributed control systems (DCS)—rely on specialized safety relays to monitor field devices and isolate hazards instantly.