Communication Module CI840A-EA ABB Unit for Fieldbus Integration Control System It then converts these signals

It then converts these signals into a digital Keyphasor signal

This model features a high-voltage control power input (90–300 VDC or 70–265 VAC)

primarily 4−20 mA current and various DC voltage ranges

Technique: Optical (in IOM)

5% to 45% above 55°C (131°F) (non-condensing)

Communication Module CI840A-EA ABB Unit for Fieldbus Integration Control System It then converts these signalsOverview The ABB CI840A EA is part of the S800 I O family, a modular and distributed I O system used in ABBs System 800xA architecture. This module acts as a Fieldbus Communication Interface (FCI), enabling reliable and flexible data exchange between I O modules and parent controllers or PLCs. Designed for redundant applications, the CI840A EA supports hot configuration in run, allowing system updates without interrupting operations. It also handles