Product Overview

The ABB DO818, part number 3BSE069053R1, is a high-density digital output component engineered for the S800 I/O system family. This 24V DC module provides 32 individual output channels, structured into two separate galvanically isolated groups of 16. Designed specifically for integration with AC 800M controllers, the DO818 facilitates the precise control of actuators, pilot lights, and interposing relays. Its sophisticated architecture includes integrated process voltage supervision for each group, ensuring that the control system can detect and react to power supply irregularities immediately. The unit is optimized for space-constrained cabinets, offering a slim profile without sacrificing ruggedness or electrical protection.

Technical Hardware Specifications

• Model Identification DO818 3BSE069053R1

• Channel Configuration 32 Channels (divided into 2 isolated groups)

• Operating Voltage 24V DC (Range 12–32V DC)

• Current Capacity 0.5A continuous per channel

• Isolation Rating 50V (Basic isolation between groups and ground)

• Switching Response Typically 1ms

• Diagnostic Indicators Individual LED status per channel and Group Error LEDs

• Mechanical Footprint 11.8cm x 11cm x 4.3cm

• Weight 0.16 kg

• Standard Compliance Full EMC and CE industrial certification

Strategic Industrial Implementations

The DO818 is a versatile solution for high-reliability sectors requiring rapid switching and dense I/O counts. Primary use cases include:

• Oil and Gas Operations: Managing solenoid valves and safety signaling in hazardous areas through remote I/O stations.

• Power Plant Control: Driving interposing relays and alarming systems within distributed control system (DCS) nodes.

• Process Automation: Implementing complex logic for chemical batching and pharmaceutical manufacturing where rapid output response is essential.

• Infrastructure Management: Controlling large-scale signaling and utility distribution points where hot-swap capability is required to maintain 24/7 uptime.