ABB DO880 System 800xA hardware selector

ABB DO880 System 800xA hardware selector

INTRODUCTION

The DO880 is a 16 channel 24 V digital output module for single or redundant application. The maximumcontinuous output current per channel is 0.5 A. The outputs are currentlimited and protected against over temperature. Each output channel consists of a current limited and over temperature protected high side driver, EMC protection components, inductive load suppression, output state indication LED and an isolation barrier to theModulebus.

Features and benefits

16 channels for 24 V d.c. current sourcing outputs in one isolated group 

Redundant or single configuration Loop monitoring, supervision of short and open loadwith configurable limits . 

Diagnostic of output switches without pulsing on outputs 

Advanced on-board diagnostics 

Output status indicators (activated/error) 

Degraded mode for normally energized channels (supported fromDO880 PR:G) 

Currentlimitation at short circuit and over-temperature protection of switches 

Faulttolerance of1(as defined in IEC 61508) for output drivers. 

For ND (Normally De-energized) systems, outputs can still be controlledwith error on output drivers 

Certified for SIL3 according to IEC 61508 Certified for Category 4 according to EN 954-1.

Detailed data

Isolation：Groupwise isolated from ground

Current limiting：Short circuit proof current limited output

Maximum field cable length：600meters (656 yards)

Rated insulation voltage：50 V

Dielectric testvoltage：500 V a.c.

Current consumption +5 VModulebus：45 mA

Current consumption +24V external：10mA

Main Functions

Multi-Channel Design:

The DO880 module provides 16 channels of 24V DC current source outputs that can be used in single or redundant applications.

Protection and Stability:

Each output channel is equipped with current limiting and thermal protection high side drivers to ensure stable and reliable output.

The modules also feature EMC protection components, inductive load suppression, and isolation barriers for Modulebus to enhance system immunity and safety.

Monitoring and Diagnostics:

Supports loop monitoring with the ability to monitor short-circuit and open-circuit loads with configurable limits.

Diagnostics for output switching without pulses and advanced on-board diagnostics are provided to help identify and resolve problems in a timely manner.

Indication and Communication:

Equipped with output status indication LEDs to show active or error status.

Supports integration and communication with other modules and devices and is an important part of the System 800xA system.