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User Manual: WaveLinx Lite (4.0)
Modify Closed Loop Daylight Settings in Standalone Areas
Daylight sensor control is achieved in WaveLinx Lite through fixture mount, tilemount and integrated sensors for both interior and exterior
applications. The WaveLinx Lite (4.0) system supports a closed loop daylighting approach in standalone areas for fixtures connected to these
devices.
For outdoor applications, the focus is typically on ensuring that the fixtures turn OFF at dawn and turn ON or enable motion activity to turn ON
lighting at dusk. For indoor applications, the focus is typically on trying to maintain a consistent light level by adjusting the amount of electric
light needed based on the amount of daylight present in the space.
In both scenarios, the daylighting functionality may be disabled for fixtures that are not located in daylight zones or for any devices where
daylight operation is not desired. In standalone areas, if daylighting is disabled, the device will work solely from occupancy settings and
commands from the mobile application.
Daylighting filters or inhibits the fixture's response to other control commands. A command from the occupancy sensor to go to 100% level will
adjust the electric light level output to meet the calibrated daylight level (calibrated light level = 100%). A command from the occupancy sensor
to go to 50% will adjust the electric light level to meet 50% of the calibrated daylight level. The actual electric light level output with these
commands will vary based on the available amount of daylight and how much electric light needs to be contributed to maintain the
commanded target. If the electric light has daylight dimmed to OFF, lighting will remain OFF if occupancy commands are received, preventing
unnecessary energy waste when adequate daylight is present.
For information on how a specific device operates with dimming and dim-to-off response, refer to "WaveLinx Lite Device Reference Sheets"
beginning on page 9 to locate the specific daylight response by device type.
• Closed Loop Daylighting: With the closed loop approach, the sensor controls only its connected light fixture. A closed loop sensor reads
the reflected light level from the surface directly below it including light contributed by the electric light and the daylight that falls within the
sensor's view. As daylight contribution increases, the sensor dims the electric light to keep the light level on the surface as consistent as
possible. If bright daylight causes the surface light level to be above the desired level even after the light level has been fully dimmed, after
a period the fixture will dim to OFF.
then raise the amount of electric light accordingly.
This section focusses on the use of closed loop sensor control. This includes details on how to:
• Enable/disable daylighting for a sensor
• Use auto calibration for a closed loop sensor
• Manually calibrate a closed loop sensor
• Test a daylight sensor's operation
Internet connection is not needed but connection to the WaveLinx Lite device is required.
Enable or Disable Daylighting for a Closed Loop Sensor
Default closed loop daylight operation is dependent on sensor type:
• By default, daylight dimming and dim-to-off functionality is enabled for all outdoor closed loop sensors. If the devices should not respond
to daylighting disable the daylight sensor.
• By default, daylight dimming and dim-to-off functionality is disabled for all interior (ambient, industrial, and tilemount) closed loop sensors.
If the devices should respond to daylighting, enable the daylight sensor.
WARNING: Disabling the daylight sensor will cause the fixture to operate solely from motion sensor activity. The
occupancy sensor will trigger response during daytime and nighttime hours regardless of light level.
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If the device allows dim-to-off, when the measured light level exceeds 150% of the calibrated light level for more than 30 minutes, the sensor will turn lighting OFF. Lighting
will be turned back ON when one of the two conditions occurs. Condition 1: The measured light level falls between 100% and 50% of the calibrated light level for more than
10 minutes. Condition 2: The measured light level falls below 50% of the calibrated light level for longer than 30 seconds.
As daylight contribution decreases and the surface light level lowers, the fixture will turn back ON and
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