In the dark the question often arises, automated lighting control, such as the lighting of the facades of buildings, commercial offices, shops, entertainment venues, perimeter fence, etc.
There are several ways of addressing this issue
- Manual control, delays often occur on the inclusion or Vice versa, depending on the mode of operation staff
- Operation via a light barrier is the difficulty in installing the sensitive element of the scheme in urban areas, sometimes you have to raise to the highest point of the building where the least impact of night lighting adjacent buildings
- The control through Electromechanical time relays 24 hours, ease of Assembly and maintenance, need periodic adjustment of the time on and off.
Fig. 1. The scheme of lighting control time switch 24 hour
Mounting arrangement comprises Electromechanical time relay for 24 hours, switch to manual and automatic control, managed kontaktori and feeding machine.
Auto mode
When you switch time relay within a predetermined range, the power through the closed contacts of time relay and manual switch and automatic mode, is supplied to a coil contactor which closes the power contacts through which you can power coil power magnetic starters.
Manual mode
If you want to include the outside of the contactor time relay, just a switch in manual control and the power is turned on the coil of the contactor
Fig. 2. The appearance of relay
Publication: electro.narod.ru