Light control unit
In this eibabo category you will find light control units of various automation systems (radio, LCN, KNX). The most common light control units in this catalog are for the KNX bus system. The light control units in KNX are usually dimming actuators for electronic ballasts that means for connecting devices with 1-10 V interface to the KNX bus system. Some explanation: A ballast unit is required for operating a gas discharge lamp, such as a fluorescent lamp (fluorescent tube). Electronic ballasts (ECG) operate at a high frequency (<50 kHz), and, thus, have lower losses than a conventional ballast. Electronic ballasts for fluorescent lamps also include the starting mechanism, have low losses and have lower operating costs, prevent „flickering light” when switched on, and are much smaller and lighter and can therefore even be installed directly in the base of lamps. Electronic ballasts may have very high capacitive inrush currents of up to 100A for 1-5 milliseconds when switched on, due to the charge storage in a capacitor for generating a constant DC voltage which is converted into a high-frequency alternating voltage for lamp operation, which, in turn, has a detrimental effect on the switching contacts of the KNX actuators and can, in the worst case, cause sticking. For this reason, these contacts are often designed for C-load (capacitive load). The same applies to LED control devices, as they also require a high input capacity. Now if you want to dim electronic ballast with a discharge lamp, the electronic ballast must be provided as dimmable electronic ballast. Dimmable electronic ballasts then have a corresponding 1-10V interface. The KNX light control units or dimming actuators for electronic ballasts also have a contact for the 1-10V control line to the ballast for dimming value and a switching contact (on / off) for switching the operating unit (EVG). Another standard for electronic ballast is DALI (Digital Addressable Lighting Interface). For KNX DALI gateways, see> eibabo catalogue Smart Home Interface-media gateway in eibabo catalog Smart Home. The advantage compared with the 1-10 V type is that addressing is possible and wiring by groups is not necessary. Further advantages are a direct response, status messages, scene memory and a variety of dimming options with DALI ballast. In this eibabo category you will find, for example, KNX dimming actuators for electronic control gear (ECG) with 1-10V interface, wireless controllers for electronic ballasts, controllers master / slave, KNX switching / dimming actuators, KNX control actuators, sensor modules, KNX control units, KNX dimming signal converters, switching and dimming modules, KNX light controls, KNX control actuators, KNX light controller modules, KNX controller CHROMOFLEX of brands ABB, Busch-Jäger, Eaton, Eltako, Gira, Hager, Issendorf, Lingg & Janke, Merten, MDT, Siemens and Theben for various automation systems.