With this functionality, you will be able to use light sensors to adapt luminaire power to the current daylight level. The light intensity in the room will be kept constant and luminaire power will automatically adjust to a given value of light intensity.
Instructions
Find the DALI2 Devs Common, Vertex action, Vertex Feedback, Daylight Harvesting, and Vertex cluster node in the palette on the left side of the Node-RED.
Drag the nodes and drop them onto the workspace.
3. In the DALI2 Devs Common node, in the Serial Number field, select the multisensor.
4. Uncheck the Light Sensor checkbox. Check the Illuminance level option.
5. Go to Daylight Harvesting node. Select the Feedback group which will be controlled and give feedback on current lux value. Set number of luxes in Daylight Harvesting value field and choose toleration (in luxes).
Note that the value of luxes in the Daylight Harvesting may not correspond to the actual brightness intensity on e.g. the desk. You should do a quick calibration. Use lux meter to measure the brightness intensity on the desk.
How to do the daylight harvesting calibration:
Set brightness in vertex action node to get e.g. 500 luxes on the desk (measure this using lux meter)
Note the Illuminance level below the DALI2 Devs Common node in the Node-RED workspace.
Enter this value in the Daylight Harvesting Value field in the daylight harvesting node.
If you need, check other configurations e.g. 1000 luxes and create a table with values.
6. Go to vertex action node. Set mode as Direct Value and as action select Set brightness (scale logarithmic). Select the same group as for the Daylight Harvesting node.
7. Uncheck the Priority checkbox and set the priority as 0. This enables the daylight harvesting function to operate after the lighting will turn on (triggered by multisensor or by switch).
Vertex action node configuration for Daylight Harvesting
8. Link all nodes together as in the screenshot below.
Flow
[{"id":"60bd1c0.62e65e4","type":"DALI2 Devs Common","z":"59857715.c357f8","name":"","outputs":1,"uid":"0084052F30EB6EE776","savedSettings":[{"instanceType":3,"isDisabled":true,"dali2t1":"","dali2t2":""},{"instanceType":4,"isDisabled":false},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"},{"instanceType":1,"isDisabled":true,"mode":"normal"}],"x":760,"y":880,"wires":[["64e7216b.57395"]]},{"id":"64e7216b.57395","type":"vertex daylightHarvesting","z":"59857715.c357f8","name":"Daylight Harvesting","primarygroup":"eae92c3f7a879fa591d3b6ec263c5133","target":"230","tolerance":15,"P":0.25,"I":0.03,"D":0,"min":-25,"max":25,"x":1100,"y":880,"wires":[["746d6035.25c8d"]]},{"id":"746d6035.25c8d","type":"vertex action","z":"59857715.c357f8","name":"","typeButton":"directv","bPayload":{"action":"setbrightnesslog","group":"eae92c3f7a879fa591d3b6ec263c5133","param":0,"priority":"0"},"bState":"","defaultpriority":false,"x":1340,"y":880,"wires":[["6e43667d.bd2b68"]]},{"id":"365ea292.b2c2ce","type":"vertex feedback","z":"59857715.c357f8","name":"","primarygroup":"eae92c3f7a879fa591d3b6ec263c5133","x":740,"y":940,"wires":[["64e7216b.57395"]]},{"id":"6e43667d.bd2b68","type":"vertex cluster","z":"59857715.c357f8","userouting":false,"rate":5,"x":1570,"y":880,"wires":[]}]
0 Comments