I have an ESS system. At the moment, I manually change the Minimum charge during the course of the year. I like to keep a minimum of 20% at all times for UPS to run for 24h with minimum household load. Can I do these changes automatically?
Enable batterylife then the GX will automatically raise the minimums based on seasonal conditions.
Alternatively, if a fixed schedule works you can use nodered to schedule this for you.
LX thanks. I might give this a try. One of the problems where I live (SW France) is that the weather is quite variable during the winter and off season months. So I can see it getting confused. I have got a schedule setup so that at the beginning of every month it overrides the programmed min SOC to 100% for a day to help the batteries.
Whatās the point of setting the minimum SOC so finely and changing it so often? I set my minSOC to 20% in the summer and 40% in the winter. I do this manually, but it would be incredibly easy to automate.
Hi Tom. At the moment I just go in and change the min SOC once a month. It only takes a few seconds. I initially just had a winter and summer setting, so only changed it twice per year. I āgiveā any surplus energy back to EDF. I was finding that in the winter months as soon as there was a good sunny day that I was returning a lot of the produced energy to the grid. I think I shall give NodeRED a try.
This strongly suggests that your battery has far too low a capacity. And if you can fully charge the battery on a sunny winter day, and there are at least one or two sunny days a month, allowing your battery cells to balance, then thereās absolutely no need to constantly raise the minimum SOC. You could just run with a minimum SOC of 20%ā¦
I would create a function within nodered that sets your desired SOC at a fixed time on the first of each month.
You could use nodes such as cron but a simple function is probably easier.
Depending on your skill level, Victron has some good intro videos worth watching. The forum has a dedicated nodered section with plenty of examples.
Your requirement isnāt complicated.
Most AIās are quite good at helping to generate flows or functions, just test it properly.
Addendum: For people with a running Home Assistant [HA] installation it is also relative simple to control ESS setting via modbus in the HA gui. Also the SOC scheduled with simple automations.
Since weather can vary, I would rather create a watchdog. You are presumably expecting a minimum SOC by a certain time. Dynamically changing min SOC throughout the day would provide a more consistent result imo.
I have a system where it needs to be 80% by 4pm, so the limit is appropriately raised to charge and then reset.
