ABB DCS Modules: ABB Bailey, AC800M & S800 I/O Module

Core Positioning: Flexible, Reliable Automation Foundation

The core positioning of ABB industrial control modules is to build a flexible, reliable automation system capable of withstanding harsh industrial environments. This is primarily reflected in:

Distributed Architecture
System Integration & Digitalization
High Reliability & Availability
Extreme Environment Adaptability

Technical Advantages: Modularity, Intelligence, and Safety

ABB's technical strengths are embedded throughout the product design:

Broad Modular Selection
Advanced Diagnostics & Intelligence
Integrated Functional Safety
Open Communication Capabilities

Key Application Areas

Leveraging these advantages, ABB industrial control modules are widely deployed across various industrial sectors. Key application areas include:

Application Sector	Typical Scenarios
Process Industries	Valve control, process parameter regulation, and safety monitoring in oil & gas, chemical, and power generation
Manufacturing & Discrete Automation	Robotic control, material handling, and high-precision assembly in automotive, electronics, and general manufacturing
Energy & Infrastructure	Equipment monitoring in power systems, water/wastewater treatment, and signaling/equipment control in railway and transportation
Harsh/Special Environments	Marine engineering, mining, and metallurgy — applications with high temperatures, high humidity, and strong vibration

ABB DO802-eA 3BSE022364R2 Digital Output Module
The ABB DO802-eA (3BSE022364R2) is an 8-channel relay output module from the S800L I/O family, designed for use with the ABB Freelance distributed control system (DCS) . Its core function is to convert control signals from the system into robust, isolated switching actions via 8 independent relay outputs, directly controlling actuators, contactors, valves, and indicators in industrial automation applications.
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ABB DO818 3BSE069053R1 Digital Output Module
The ABB DO818 (3BSE069053R1) is a 32-channel digital output module from the S800 I/O series, designed for the ABB System 800xA and AC 800M distributed control systems (DCS) . Its core function is to convert logic commands from the controller into high-density 24V DC switching signals to drive field devices such as relays, solenoid valves, indicator lamps, and actuators. With its high channel count, transistor-based switching, and robust protection features, this module is a reliable solution for high-density discrete output applications in demanding industrial environments.
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ABB DO801 3BSE020510R1 Digital Output Module
The ABB DO801 (3BSE020510R1) is a 16-channel digital output module from the S800 I/O family, designed for reliable 24V DC current-sourcing applications in industrial automation systems . As part of ABB's System 800xA and AC800M ecosystem, this module provides the interface between the control system and field devices, converting digital commands into switching signals that drive solenoids, contactors, indicators, and other actuators . The DO801 features 16 transistor-based sourcing outputs with built-in short-circuit, over-voltage, and over-temperature protection . Its compact S800L mechanical design and comprehensive diagnostic features make it an excellent choice for both process and factory automation applications where space and reliability are critical.
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ABB DO828 3BSE069055R1 16-Channel Relay Digital Output Module
The ABB DO828 (3BSE069055R1) is a 16-channel relay digital output module from the S800 I/O family, designed for reliable switching of AC and DC loads in demanding industrial automation applications . Featuring electromechanical relay outputs with Normally Open (NO) contacts, this module interfaces seamlessly with ABB AC800M controllers and System 800xA via the ModuleBus . With 16 individually isolated channels, the DO828 provides robust control for actuators, contactors, solenoids, and pilot devices. Its comprehensive diagnostic capabilities and Output Safe Preset (OSP) function make it a trusted choice for process control, power generation, and factory automation applications where reliability and safety are paramount.
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ABB AI810 3BSE008516R1 Analog Input Module
The ABB AI810 (3BSE008516R1) is an 8-channel analog input module for the ABB S800 I/O system, part of the Ability™ System 800xA distributed control system (DCS) and Freelance process control platforms. Its core function is to convert analog signals—such as 0–20 mA current or 0–10 V voltage from transmitters and sensors—into 12-bit digital values for the process controller, enabling precise measurement of pressure, temperature, flow, and level in industrial applications.
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ABB DO840 3BSE020838R1 Digital Output Module
The ABB DO840 (3BSE020838R1) is a 16-channel digital output module from the S800 I/O family, designed for supervised 24V DC current-sourcing loads in both single and redundant configurations . As part of ABB's System 800xA and AC800M ecosystem, this module delivers robust performance for demanding industrial automation applications requiring high reliability and advanced diagnostics. The DO840 features 16 current-sourcing output channels arranged in two isolated groups of eight, each with independent process-voltage supervision . Built-in protection mechanisms including current limiting, over-temperature protection, and inductive load suppression ensure stable operation even in harsh industrial environments.
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ABB DO810 3BSE008510R1 Digital Output Module
The ABB DO810 (3BSE008510R1) is a high-performance digital output module from the S800 I/O series, designed for the ABB Ability™ System 800xA and other ABB control platforms . This module provides 16 channels of 24V DC current-sourcing outputs, serving as a reliable interface between the controller and field devices such as solenoids, relays, contactors, and indicator lights . Featuring robust protection mechanisms and comprehensive diagnostics, the DO810 ensures stable and safe operation in demanding industrial environments.
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ABB DO820 3BSE008514R1 Digital Output Module
The ABB DO820 (3BSE008514R1) is an 8-channel digital output module from the S800 I/O family, designed to provide robust and reliable control for demanding industrial automation applications . Featuring electromechanical relay outputs with Normally Open (NO) contacts, this module bridges the gap between your control system and high-power field devices. As part of the ABB S800 I/O system, the DO820 interfaces seamlessly with AC800M controllers and System 800xA via the ModuleBus. Its individually isolated channels and comprehensive diagnostic capabilities make it a trusted choice for discrete output control in process industries, power generation, and factory automation.
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ABB CI865K01 3BSE040795R1 Communication Interface Module
The CI865 module is the AC 800M system’s communication interface for Satt ControlNet and bridges different bus standards used on AC 800M and Satt ControlNet. The CI865 module makes it possible to use older Satt I/O system (Rack I/O and Series 200 I/O) with the AC 800M controller platform, but it cannot be used as a general ControlNet interface. CI865 cannot be used in a High Integrity controller.
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