The ABB PM858 is a core component within the ABB Ability System 800xA, serving as a high-performance CPU (Central Processing Unit) module for the AC 800M controller. It's designed to manage complex control processes in demanding industrial environments, offering features like redundancy for enhanced reliability.

Product Description

The ABB PM858 is the brain of the AC 800M controller. It contains the microprocessor, RAM memory, a real-time clock, and diagnostic LED indicators. The CPU board interfaces with a base plate (typically a TP830) which provides the physical connections, including two RJ45 Ethernet ports for connection to the control network and two RJ45 serial ports (one for RS-232C communication and another isolated port for configuration).

The PM858 is built for robust industrial applications and supports CPU redundancy, meaning two PM858 units can operate in parallel to provide higher availability. If one unit fails, the other seamlessly takes over, minimizing downtime. This makes it suitable for critical processes where continuous operation is essential. It's designed for simple DIN rail attachment and detachment, featuring a slide-and-lock mechanism for easy installation and maintenance.

Product Specifications

• Manufacturer: ABB
• Model Name: PM858
• Product Type: CPU (Central Processing Unit) Module for AC 800M Controller
• Common Kits: Often sold as part of a kit like PM858K01 (single processor unit) or PM858K02 (redundant processor unit).
• PM858K01 includes: 1x PM858 CPU, 1x TP830 Baseplate, 1x TB807 ModuleBus terminator, 1x Battery. (ABB part number for PM858K01 is often 3BSE082895R1).
• PM858K02 includes: 2x PM858 CPUs, 2x TP830 Baseplates, 2x TB807 ModuleBus terminators, 1x TK850 CEX-bus expansion cable, 1x TK851 RCU-Link cable, 2x Batteries. (ABB part number for PM858K02 is often 3BSE082896R1).
• Processor Speed: Typically 33 MHz (for older versions, newer AC 800M CPUs are much faster).
• Memory: 16 MB RAM (for this specific PM858 variant).
• Communication Ports (on Baseplate):
• 2 x RJ45 Ethernet ports (CN1, CN2) for control network connection.
• 2 x RJ45 serial ports (COM3, COM4): COM3 (RS-232C with modem control), COM4 (isolated, for configuration).
• Redundancy: Supports CPU, CEX-Bus, communication interfaces, and S800 I/O redundancy for high availability.
• Compatibility: Compatible with ABB Ability System 800xA (e.g., from version 6.0.2 onwards) and Compact Control Builder (e.g., from version 6.0.0-1 onwards).
• Protection Class: IP20 (without additional enclosures).
• Environmental:
• Operating Temperature: +5 to +55 °C (+41 to +131 °F).
• Vibration and Noise: Meets industrial standards for robust operation.

• Certifications: ISA Secure certified, full EMC certification.

Product Application Cases

The ABB PM858 is a cornerstone for process automation and control in various heavy industries, forming the central intelligence of the AC 800M controller within the System 800xA platform.

• Process Control Systems: Widely used in large-scale oil and gas, petrochemical, power generation, chemical, and pulp and paper industries. It manages the complex control loops for reactors, distillation columns, turbines, boilers, and other critical process equipment, ensuring stability, safety, and efficiency.
• Distributed Control Systems (DCS): As a core component of System 800xA, the PM858 enables distributed control architectures where control functions are executed across multiple controllers while being supervised from a centralized control room. This is ideal for managing vast and geographically spread industrial plants.
• Manufacturing Automation: In areas like mining, metals, and cement, the PM858 controls large machinery such as mills, crushers, and kilns, automating complex sequences and optimizing production processes.
• Critical Infrastructure: Applied in water and wastewater treatment plants, and large building automation systems for managing pumps, valves, filters, and HVAC systems, ensuring continuous operation and resource management.

• High Availability Applications: Due to its support for redundancy, the PM858 is chosen for applications where unplanned downtime is unacceptable, such as emergency shutdown systems, critical utility controls, and continuous production lines.

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Click to download the relevant instruction manual

Product-PM858K01.pdf

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一：Regarding the quality of the product and after-sales service

Brand:ABB

Product Number: 3BSE082895R1 PM858K01

Status: 100% original

Warranty period: 12 months.

Payment method: T/T. Currencies for receipt: US dollar, New Zealand dollar, Chinese yuan, euro, Hong Kong dollar, Australian dollar, British pound, Canadian dollar, ruble and other global currencies

Market price: RMB55000-RMB60000 (For reference only)

二：How to purchase

YMGK offers one-stop global industrial product procurement

Sales Manager: Li Ming

WeChat: 18059884790

WHATSAPP:+86 18059884790 （Click to add）

Email:plc66@qq.com

We have 121 shared inventories worldwide, with direct procurement from overseas warehouses. We offer favorable prices and after-sales warranty services. 

Our customers come from the United States, Germany, Japan, South Korea, the United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, the Netherlands,

Switzerland, Sweden, Belgium, Austria and Turkey

All products are brand new and original. The warranty period for spare parts is one year and they have been tested and certified.

If you need to order more than one product, please contact us and we can offer you a discount.

If you find that other suppliers offer lower prices for the same products, we are also willing to provide you with further discounts based on the budget.

If you have any other questions, please feel free to contact us at any time.