LR/S 2.2.1 Light Controller and Dim Actuator Datasheet

This document is a technical datasheet for the ABB i-bus EIB LR/S 2.2.1, a two-channel DIN rail device that functions as a light controller, switch, and dim actuator for electronic ballasts with 0-10V control inputs. It details specifications, application programs, wiring diagrams, and configuration for constant light control in offices, including closed-loop control, dimming thresholds, and manual operation.