Background lighting saves energy by turning on the lights to profile max only when an area or space is occupied. It relies on a group of sensors using the same profile and being in the same motion group. It uses a combination of the sensors' profile max light level and background light level of the motion group enabled in the Advanced Profile.
In legacy lighting control, the profile has two light levels: min and max light level. When there is no occupancy, the sensor controlling the fixture sets it to the min. light level, and when the sensor detects motion, the lights go to the profile max.
Background lighting allows any sensor in the group to control the light levels in the area. When a person enters a room, background lighting turns on all lights in the area to the profile max, providing sufficient lighting in the area. As the person prepares to stay and work at the desk, the sensors directly above the person raise their light levels to the profile max, while the remaining lights in the area continue to maintain their background light levels.
When the person leaves the room, and after the Active Motion Window times out, the lights go down to the background light level (50% of the profile max). The lights stay at background light levels as long as there is no motion for the time specified in the Advanced Profile, after which, the lights go down to the profile min light level.
To enable background lighting,
- Click on Profile Templates in the left panel to display the list of available profiles.
- Select the required profile instance.
- Scroll down and click the Advanced tab. The Advanced Profile window is displayed.
- Check the box to set Background Light level to 50% of the profile max.
- Specify a time between 1 minute and 120 minutes for the lights to go down to the background light level after the Active Motion window times out.
- Scroll up and click the Update button to apply the changes.
- Assign the profile to the group of sensors controlling background lighting.