LED street lighting dimming feature helps to flexibly adapt street and outdoor lighting to the varied nightlife of cities and municipalities and enables significant energy savings. It offers three different control and dimming functions in single electronic control gear:
DALI – digital interface for bi-directional communication
ADIM – autonomous dimming
ADIM – autonomous dimming is designed for dimming without any external control wiring and helps to save energy and reduce light pollution, even if only a power line is available. In ADIM operation, the street lighting fixtures executes a pre-set dimming profile, which can be factory programmed. The autonomous dimming is regulated by an integrated timer, which adjusts the dimming profile according to the previous night (operation from switch-on to switch-off).
Example: at 19 o’clock street lights are turned ON and at 6 o’clock turned OFF. In this case we have total of 11 hours long operation, middle point in this case is 5.5 hours which makes “natural midnight” at 00:30, so power goes down to 50% operation at 22:30 (00:30 – 2h), returns to 100% operation at 04:30 (00:30 + 4h). Power switch always takes average of last 4 operating times to calculate reference point. Energy savings about 70 percent. Higher energy savings can be achieved setting lower/longer operation level during night time or more power reduction steps. Please add this information when placing order.
Bellow you can download leaflet about LED STREET LIGHTING CONTROLS:
LED STREET LIGHTING CONTROLS.PDF