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ttbb avatar image
ttbb asked

DC consumption not logging on VRM?

I have just set up a Raspberry Pi running Venus OS

System: 2x 75/15s + Pi / 7s Lithium NMC / DC only setup with all loads via the load outputs.

So the VRM dashboard shows 'live' consumption at last update, the advanced widget 'System Overview - DC system' does a good job of allowing me to see watts used at any point in time.

Load out data from the MPPTs clearly exists. Why then is there no DC consumption logged on the dashboard like solar power produced?

https://vrm.victronenergy.com/installation/50299/share/e844d84d


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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @TTbb

there is, but not as 'DC power' that is only available with a battery monitor.


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ttbb avatar image ttbb commented ·

Hi @Daniël thank you for the reply . I am not so interested monitoring the individual outputs at any point in time, although its useful and nice. Totals over a time period in watts is what i am after.

If all the data is already available and clearly it is because consumed watts are logged within the controller history, live consumed watts are being shown in the VRM dashboard. 'System Overview - DC system' can be used to track back what was used at any point in time. Why is a battery monitor needed just to log this data to present it like the PV watts generated? That seems to make no logical sense!

I thought i would give the VRM a go and set up the Pi because the MPPTs are functionally compromised by the lack of an internal clock. Without a new day starting at a consistent set time and a useful time such as midnight the logging in history is not really that useful.

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JohnC avatar image JohnC ♦ ttbb commented ·

Hi TT. I don't know if this is what you want, but if you set Dashboard to 'Last 7 Days' and hover over the bar you want, you'll get daily summaries.

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ttbb avatar image ttbb JohnC ♦ commented ·

Hi @JohnC yes that is exactly what i am after and it works wonderfully for solar but the issue is consumption is not logged. :(


@Daniël is suggesting it can only be done with a battery monitor. As is probably clear form my response I can't quite wrap my head around that one. The data already exists form the MPPTs and is presented in 'advanced' where it can be tracked back. To show on the graph would surely just be taking the total between two points in time, what am i missing? Maybe i am missing something but is that not exactly what is happening with the solar logging??



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JohnC avatar image JohnC ♦ ttbb commented ·

In the VRM Dashboard, have you tried all selections in the System Overview box?

If you have 'Has DC System' checked in Venus, try with it unchecked.


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