Nebula Cabling Option B2
Posted: Mon Jun 28, 2021 8:34 pm
So I´m looking at the different cabling options shown in the manual and find B2 to be the most convenient for my setup (and my limited experience). I have two questions on this:
1.
In the left side of the diagram, there is the power supply symbol. According to the legend on page 8, this can be either a monolithic PSU that handles all supply or it can be multiple smaller ones.
If I´m going for smaller ones, is there any connection made between them?
2.
In the same scenario, Nebula is receiving power via the power supply terminal and not via strips. Can this be connected to one of the "LED power supplies" or should there be a dedicated PSU for Nebula?
Context:
My main goal is to keep things simple, i.e. no V+ connection between any LED strip and Nebula, all strips and connectors are configured in the same way. If Nebula can be powered from one of the "strip PSU" that´s even nicer, but I want this to be a dedicated line.
Current test setup:
Strips: 5m of WS2815, 12V, 150 LEDs, 45W -> 3.75A per strip (calculated value)
PSU: Meanwell HLG-240H-12A specified at 12V 16A (don´t get fooled my the model number 12A)
After measuring a single strip at full white pulling 2.7A, I feel comfortable to power 4 strips from one PSU. I rarely use full white and I rarely use longer light sequences. At 450 addresses per strip, assigning 1 strip to 1 universe is of course wasting address space, but the setup is much easier to understand, because:
1 Nebula = 8 universes -> 8 strips
4 strips per port, 1 PSU per 4 strips = 2 PSU per Nebula
This then defines a building block which can be replicated for growth. Either in one big installation or several smaller ones.
1.
In the left side of the diagram, there is the power supply symbol. According to the legend on page 8, this can be either a monolithic PSU that handles all supply or it can be multiple smaller ones.
If I´m going for smaller ones, is there any connection made between them?
2.
In the same scenario, Nebula is receiving power via the power supply terminal and not via strips. Can this be connected to one of the "LED power supplies" or should there be a dedicated PSU for Nebula?
Context:
My main goal is to keep things simple, i.e. no V+ connection between any LED strip and Nebula, all strips and connectors are configured in the same way. If Nebula can be powered from one of the "strip PSU" that´s even nicer, but I want this to be a dedicated line.
Current test setup:
Strips: 5m of WS2815, 12V, 150 LEDs, 45W -> 3.75A per strip (calculated value)
PSU: Meanwell HLG-240H-12A specified at 12V 16A (don´t get fooled my the model number 12A)
After measuring a single strip at full white pulling 2.7A, I feel comfortable to power 4 strips from one PSU. I rarely use full white and I rarely use longer light sequences. At 450 addresses per strip, assigning 1 strip to 1 universe is of course wasting address space, but the setup is much easier to understand, because:
1 Nebula = 8 universes -> 8 strips
4 strips per port, 1 PSU per 4 strips = 2 PSU per Nebula
This then defines a building block which can be replicated for growth. Either in one big installation or several smaller ones.