Overview

The DO818 Digital Output Module is designed for ABB’s AC 800M controllers and System 800xA DCS platforms. It converts logic signals from the controller into switching signals for actuators such as relays, solenoids, and indicator lamps.

The module features short‑circuit protection, channel isolation, and LED status indicators, ensuring safe operation and simplified troubleshooting.

It is widely used in process industries, power generation, water treatment, and manufacturing automation, where precise digital output control is essential.

Technical Data

Typical Applications

• Power generation: Drives relays and solenoids in turbine and excitation systems.

• Process industries: Controls actuators in chemical, oil & gas, and pharmaceutical plants.

• Water treatment facilities: Operates pumps, valves, and signal lamps.

• Manufacturing automation: Provides digital outputs for robotic systems and conveyor lines.

• Infrastructure systems: Used in building automation and utility monitoring.

Example: In a chemical plant, the DO818 module can drive solenoid valves and indicator lamps, ensuring precise control of process flows and operator feedback.

FAQ

Q1: What is the ABB DO818 used for?
A1: It is a digital output module that drives actuators such as relays, solenoids, and lamps.

Q2: How many channels does it provide?
A2: It offers 32 isolated channels, grouped into two sets of 16.

Q3: What is the maximum current per channel?
A3: Each channel supports up to 0.5 A at 24 VDC.

Q4: Which termination units are compatible?
A4: It works with TU818, TU819, and TU830 termination units.

Q5: Is it short‑circuit proof?
A5: Yes, the module includes short‑circuit protection for safe operation.