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The ABB DO814 is part of the ABB S800 I/O family and is a 16-channel, 24 V DC digital output module designed for industrial-process control systems.In process control systems using ABB’s DCS or
automation platform (e.g., ABB Ability™ System 800xA®), the DO814 module provides the digital output interface to field devices (actuators, valves, relays,
signal lamps, etc).utputs are current-sinking type (i.e., transistor low-side switching) within an output
specification of 24 V DC (typically) with range approx. 10-30 V.
Q1: What is the voltage range and current rating for the outputs?
A: The nominal signal specification is 24 V DC (the module is intended for 24 V DC output devices). The module rating shows the output voltage range is
approximately 10-30 V (or 12-32 V in some specs) for proper switching.
The maximum continuous current per channel is about 0.5 A.
Q2: Is each channel individually isolated from the others?
A: The module has two isolated groups (each group contains eight channels). Each group is galvanically isolated
from the other and has its own process-voltage supervision input. However, within a group the
channels share the same group isolation barrier rather than being individually isolated.
Q4: What kind of wiring or termination units are required?
A: The DO814 fits into ABB’s S800 I/O system and requires a compatible Module Termination
Unit (MTU) or “TU” series (for example TU810, TU812, TU814, TU830, TU833 or TU838).
The termination unit provides the field-wiring connections and the
ModuleBus mechanical and electrical
interface.
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