ETC Echoflex ELED3, Руководство по настройке, Страница: 14 / 24

10 Tri-Zone Dimming Controller Configuration Guide
3. Tap the [Teach] button on the mounted sensor three times to set the daylight harvesting
parameters to closed loop function. The light ramps up to full ON and then dims to OFF to
acknowledge the change.
4. Move away from the sensor so your shadow does not affect the light level the sensor
records.
After a pause, the light responds once again when the next message from the sensor is
received and the controller returns to normal operation. The pause may take up to 150
seconds.
While maintaining the set point, the dimming output level only changes a small amount of the
output's full range with every message received from the photo sensor. The
closed loop
maximum output change is set to 10% by default.
Note:
Ensure the wireless photo sensor has an update rate that is appropriate to
indoor closed loop lighting applications. The period between consecutive messages
should not exceed 200 seconds.
The output dimming level does not change when the photo sensor level is within (+ or -) the
closed loop dead-band value of the closed loop daylighting set point . Garibaldi Pro software is
required to configure both the amount of change per message and the dead-band value
parameters.
Open Loop Control
Open loop daylighting becomes active when a photo sensor with a maximum detectable range
of light greater than 2500 lux is linked to the controller. In open loop daylighting, the sensor
monitors the natural light contribution and should be mounted so it is not affected by the
controlled fixture's light output.
When the light level monitored by the photo sensor is below the open-loop maximum output
set point , dimming output is at the maximum output level . When the light level is above the
open-loop minimum output set point , dimming output is at the minimum output level .
In the diagram below, the solid line (blue) indicates dimming output. It begins lowering as the
natural light level increases, dashed line (green). When the monitored light level is between
the set points it modulates dimming output proportionally.
Minimum
Output Level
Photo Sensor Range
Min. set point% 100%
Dimming Output Value Photo Sensor Value
0% Max. set point%
Maximum
Output Level
The rate that dimming output changes is defined by the parameter open loop dimming rate
which defines the time for dimming to go from 0% to 100% or vice versa (default
65 seconds).