This article describes a functionality where after turning on the lights they will adjust the light intensity using daylight harvesting as long as presence is detected in the room.
The lighting turns on when the button is pressed. Luminaires adjust the light intensity depending on the amount of daylight (daylight harvesting). When a sensor stops detecting the presence the lighting turns off. Use this scenario when you want one button to turn the light on and the other to turn it off (single button mode [1]for each vertex action [2]).
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Import the ready made flow using the instructions here: Importing a Node-RED flow or follow the instructions below. |
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Step-by-step instructions
Find the following nodes in the palette on the left side of the Node-RED, drag them to your workspace, name them and connect as shown.
DALI2 Devs Common x2
Daylight Harvesting
vertex action x4
vertex cluster
We have two DALI2 Devs Common nodes, one for the On/Off button function and the second node for the multisensor. In the On/Off Button node, with button no. 1 we set the brightness to 100% on a selected group. Button no. 2 sets the brightness to 0% (turns off the group).
Edit the two vertex action nodes.
In the 100 vertex action node uncheck the default priority checkbox [1] and set the priority to 255 [2] in order to enable daylight harvesting function. Daylight harvesting will then start to work after turning on the lighting from the ON button. In the 0 vertex action node leave the default priority.
In both nodes choose the Mode as single button, choose Action as set brightness and select a group you want to work on. Set the brightness level you need.
Enter the multisensor DALI2Devs Common node and find the correct serial number [3]. In this DALI-2 multisensor node, we have 2 instances The first instance is responsible for presence/movement detection and the second one is a light sensor instance.
Set the t1 and t2 times [4] in the motion/presence sensor section, make sure to uncheck the disabled checkbox [5] to enable the sensor and check if the correct event filters are set [6].
Check the Illuminance levelcheckbox[7]in the Light sensor section.
4. In VA: Motion sensor nodeselect the same group as in the VA: 100 and VA: 0 nodes.
5. Daylight Harvesting node configuration: Daylight Harvesting.
6. Configure the VA: DH node:
Make sure that the Priority is set to “0”.
7. Connect all nodes, link VA nodes with vertex cluster and click Deploy.
Do not forget to click Done and Deploy!
What can I modify?
Brightness levels after buttons pressing. Change that in VA: 100 and VA: 0 nodes.
Change the value of Daylight harvesting value.
Change the presence and transition times in the DALI-2 multisensor node.
Optionally if you use a 4-button wall panel, you can add further buttons to e.g. set different brightness levels or scenes triggering.
You may not need a light sensor and can have only an ON/OFF button + OFF from the sensor function. If so, delete nodes that are not needed.