ABB PM857K02 3BSE088386R1 CPU Controller Unit

Product Overview
The ABB PM857K02 (3BSE088386R1) is a high‑integrity, rail‑mounted CPU module in the AC 800M control system family. Featuring a 96 MHz processor and 32 MB total memory, it supports up to 128 I/O signals and includes modular redundancy, making it ideal for safety‑critical industrial environments

Technical Specifications

Applications
The PM857K02 serves as a central processing unit in ABB System 800xA and AC 800M architectures. It is used for:

• Critical industrial process control in oil & gas, power, chemical and refining

• Integrated safety and process automation with SIL‑3 support

• Systems requiring high availability via redundancy

• Complex automation requiring up to 128 I/O points

It integrates seamlessly with S800 I/O, communication modules, and full 800xA Control Builder software.

Advantages

• High Integrity & Safety: Achieves SIL‑3 certification with safety module support

• Redundant Architecture: Multiple communication and CPU redundancy ensure minimal downtime

• Flexible Connectivity: Ethernet + RS‑232 ensures legacy and modern system interfacing

• Compact, Rugged Design: DIN‑rail mounting with compact footprint withstands industrial environments

• Seamless Integration: Fully compatible with 800xA environment and Control Builder tool

• Reliable Timekeeping: Built-in lithium RTC with battery backup ensures accurate timestamping

10 Frequently Asked Questions (FAQ)

1. Is it compatible with older PM857K01?
   Yes—designed as a direct upgrade with similar form factor.

2. What is included in the package?
   Generally shipped with 2 × PM857K01 safety modules, CEX-bus and RCU cables

3. Can it run stand-alone without redundant CPU?
   Yes—but redundancy must be disabled and configured in software.

4. Does it include a Control Builder license?
   No; programming tool license is purchased separately.

5. How long is the warranty period?
   We provide one year warranty

6. What’s the power draw?
   Approx. 210 mA typical; 360 mA max at 24 V DC

7. Can I hot-swap it?
   Supports hot-swap for communication and I/O modules; CPU swap requires controlled procedure.

8. RTC lifetime?
   Lithium battery typically lasts 5–7 years, field‑replaceable.

9. What certifications does it hold?
   SIL‑2/3, EMC, CE, TÜV, ISA G3 corrosion .

10. Which software versions support it?
    Compatible with System 800xA and AC 800M Control Builder spanning versions 5.x to current.

Related Models – Same Series

Other Popular ABB Controller Models

Related Models – Same Series

Other Popular ABB Controller Models

Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.

As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.