ABB SM811K01 3BSE018173R1 Safety CPU Module for System 800xA & AC 800M

Product Item : SM811K01
Product Brand : ABB
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Product Description
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The ABB SM811K01 (3BSE018173R1) is a high-integrity Safety CPU Module designed for the ABB System 800xA and Symphony Plus control systems. As a core component of the S800 I/O family, this module is specifically engineered to execute safety-critical control logic in collaboration with the PM865 controller.

Designed to meet the rigorous demands of the process industries, the SM811K01 features a 1oo2D (One-out-of-Two with Diagnostics) redundant architecture. This ensures that your emergency shutdown (ESD), fire and gas (F&G), and burner management systems (BMS) operate with maximum reliability and availability .

Key Features & SEO Keywords

SIL 3 Certification: Certified according to IEC 61508, suitable for the highest level of safety integrity in industrial applications.

Redundancy Management: Supports seamless integration with AC 800M High Integrity controllers for redundant system configurations .

High Performance: Powered by an MPC862P microprocessor running at 96 MHz with 32 MB RAM, ensuring rapid logic execution .

Wide Compatibility: Fully compatible with ABB Ability™ System 800xA, Symphony Plus, and S800 I/O modules.

Robust Design: Operates in extreme environments ranging from -25°C to +70°C .

Technical Specifications

Based on ABB official datasheets and technical documentation.

Parameter Specification

Order Code 3BSE018173R1

Product Type Safety Central Processing Unit (CPU)

System Compatibility ABB System 800xA, Symphony Plus

Safety Level SIL 3 (IEC 61508)

Architecture 1oo2D (Dual Processor with Diagnostics)

Processor MPC862P @ 96 MHz

Memory 32 MB RAM

I/O Connection S800 I/O Bus via CEX-Bus interconnectivity

Power Supply 24 V DC ±10%

Power Consumption Typ. 5 W / Max 7 W

Operating Temp. -25°C to +70°C

Storage Temp. -40°C to +85°C

Dimensions (H x W x D) 185 mm x 59 mm x 127.5 mm

Weight Approx. 0.6 kg

Protection Rating IP20

Product Applications

The ABB SM811K01 is the ideal solution for high-risk industries requiring fail-safe operation:

Oil & Gas: Emergency Shutdown Systems (ESD) and Fire & Gas Detection (F&G).

Petrochemical: Reactor safety monitoring and High Integrity Pressure Protection Systems (HIPPS).

Power Generation: Turbine control and boiler safety management.

Manufacturing: Automotive press lines and robotic cell safety .

Functional Highlights

1. High Integrity Redundancy

Unlike standard CPUs, the SM811K01 utilizes a 1oo2D architecture. It contains two independent processors that execute the same program simultaneously. A comparator continuously checks the results; if a mismatch occurs, the module safely shuts down without outputting a dangerous signal .

2. Synchronization Capability

When used in redundant pairs with the PM865, the SM811K01 supports high-speed fiber-optic synchronization (using modules like the SM811K01 itself as a sync unit or working alongside standard sync modules). This allows for bumpless switchover in less than 10 milliseconds, preventing process disturbances .

3. Comprehensive Diagnostics

The module features extensive internal diagnostics (memory, CPU, I/O monitoring). Status LEDs on the front panel provide immediate visual feedback on module health, fault status, and bus communication activity .

Installation & Maintenance

Mounting: Standard DIN-rail mounting (Top-hat rail TH35-7.5).

Configuration: Engineering is performed via ABB Control Builder M or 800xA Engineering tools.

Maintenance: The modular design supports hot-plug replacement (under specific system configurations) to minimize downtime in critical processes.

Why Choose ABB SM811K01?

Proven Reliability: Built on ABB's legacy of high-quality DCS components.

Global Support: Widely stocked by major automation suppliers (Lead time: 3-5 days typically) .

Longevity: Designed for a long lifecycle, supporting legacy systems and new builds alike.

Ordering Information

Manufacturer: ABB

Model: SM811K01

Catalog No: 3BSE018173R1