ABB DI820 Digital Input Module

Description

ABB DI820 Digital Input Module is a specialized component for industrial automation control systems, designed to capture and transmit digital signals for process and equipment management. It supports two core signal types: switch and pulse inputs, with configurable parameters including signal type, filtering options, and channel mapping via dedicated configuration software. The module typically features 8 input channels, with expandability up to 32 channels for scaled applications, and connects to external devices via cables or wires with compatible interfaces.

Key technical specifications include an input voltage range of -30V to +5V for “0” signals and 15V to 30V for “1” signals, with groupwise isolation from ground across 2 groups of 8 channels. Optional filter times of 2, 4, 8, or 16 milliseconds allow customization for signal stability, while sensor power can be limited via MTU. It supports a maximum field cable length of 600 meters (656 yards), has an insulation rated voltage of 50V, and a power dissipation of 1.8 watts, with current consumption of 50mA on the +5V module bus and 0mA on the +24V module bus and external +24V supply.

Ideal for multiple industrial use cases, the module enables data collection from external devices like buttons and sensors, real-time process variable monitoring, integration into industrial safety systems to receive signals from emergency stops or smoke detectors, and event recording with timestamps for troubleshooting and analysis.