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Hello,
I have a Battery which is charged by solar with a BlueSolar 75/15. Now I want to add a Multiplus Compact 1600/70 which should charge the battery when it gets Power from the grid. Because both chargers at the same time does'nt work, I want to use the internal Relais of the Multiplus to switch off the BlueSolar, but I do not find a command for the relais to switch when Grid Power is on. Have I overlooked something or must I use an external relais?
Thanks
Ed
Whats the issue you are facing that prevents you from using both the MPPT and the Multiplus at the same time?
But switching the internal relay should be possible by using the relay assistant in VE.Config, if AC1 is available, switch relay off, if AC1 is not available, switch relay on
I cant post a screenshot since its broken here. Maybe ask the question in the new community again
Hi,
Its because the charging state is defined by the battery voltage. If there are two chargers, each of them sees the charging voltage of the other.
I don‘t see any option in the VE.config Software. Is it the second (standard) setting „drive multifuctional relay…“ ?
Thanks
Ed
Its because the charging state is defined by the battery voltage. If there are two chargers, each of them sees the charging voltage of the other.
The charging state is defined by how much the battery is charged, thats what sets the DC system voltage. If the battery is fully charged then both chargers will go into float. If you set the float voltage to the same level, both will change state at the same time (roughly). This is no issue, it just means the battery is fully charged, not that the chargers influence eachother.
Further you can activate "Solar and Wind priority" on the Multiplus, this will ensure that the battery is charged by the MPPT as the first priority. This means that even if you leave the grid connected, the system will use solar power first to charge. No need to switch on/off chargers or change their charging voltage levels.
I don‘t see any option in the VE.config Software. Is it the second (standard) setting „drive multifuctional relay…“ ?
Thats the virtual switch section, that should work as well, but im not sure how to set it to react to grid present, theres no setting for grid voltage.
Using the realy assitant you can use ACin present to switch the relay on, and ACin not present to switch it off again
