I have a Victron Multiplus 48/5000/70 installed with a ET112 grid meter connected to a Raspberry PI running as a Venus Device and I have ESS installed. I have a solar PV system, but no connection to the Venus Device.
The Multiplus is charging and maintaining 100% charge, however never switches into Inverter mode.
I want the system to charge the batteries during the day with the solar excess and discharge to the house overnight. I do not want to charge the batteries from the grid and want to avoid exporting any energy from the battery.
Currently I am stuck with the Multiplus not inverting. Any help would be appreciated.
You will need the GX device to see the PV so it knows when tp use it and not. At the moment it thinks you just have batteries… You can set a minimum SOC and charge schedule on the GX and that may be an option.
Hi, thanks for comments so far.
The switch is in the ON positions.
I do not know how to read the PV output. I have a Solis PV inverter connected into the main house supply.
I want to charge the batteries during the day and discharge at night. However, restrict the batteries from exporting to the grid and only supplying the house.
At the moment the Multiplus will not Invert. It occasionally switches to invert and discharges for a second or so and then immediately reverts to charging.
I am finding the battery charging restrictions set in the VRM are also not being applied to the charger ie I set it not to charge at night, but it still charges?
Look at scheduled charge under the ESS it will allow you to vary the SOC during the day and night at different levels.
ESS is designed to be grid connected all the time, the only times you will switch to inverting is when there is grid rejection or grid outage.
But you can discharge to loads on the output of the inverter (if you set i like that in ESS).
OK sorry, it is unclear exactly what you are trying to do. When you say it won’t invert, I assumed you mean that if you switch the power off, it doesn’t supply the loads.
Now it sounds as if you mean that it does not push energy back to your loads. Which is a bit different.
As @LXpwr said, you want to look at ESS. How to set it up is in the documentation. Then you can use Scheduled charge levels to make it charge during the day, and discharge at night.
I only have one connection to the Multiplus from the consumer unit, which is on the input. This connection also has all my loads attached. Yes I am trying to push energy back into the loads without pushing anything more to the grid. And yes the inverter is not inverting at any time. I think I either have a wiring issue, or the Multiplus is too old for the ESS software?
update: this afternoon having powered the multiplus off and back on again, it has started to discharge? I can see no reason for the change… any idea why this may be?
DynamicESS is Victron’s arbitrage system, mostly used by people in Europe, to buy energy when it is cheap, and potentially sell it back when it is expensive.
Your use of the term “Consumer unit” tells me you’re British
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