I/O Module ABB DI840 Industrial Control Discrete Contact Input I/O Module 1 isolated RTD reference junction

1 isolated RTD reference junction compensation channel

Water Treatment Plants: Supports distributed control of pumps and valves

In addition to its I/O capabilities

Tracks status inputs from auxiliary systems and safety interlocks

I/O Module ABB DI840 Industrial Control Discrete Contact Input I/O Module 1 isolated RTD reference junctionOverview The ABB DI840 (3BSE020836R1) is a 16 channel digital input module in the S800 I O family, designed for reliable signal acquisition from field devices in distributed control systems. It supports 24 VDC inputs, galvanic isolation, channel diagnostics, and LED indicators for robust operation in mission critical environments. The module integrates with ABB AC 800M controllers and System 800xA, supporting both redundant and non redundant