Good day. I have inherited an installation with a Multiplus 24/5000 with the old microprocessor(1949209) and no GX device. Is it possible to load assistants like ESS or any other assistant that could help configure the inverter to prioritize PV power and battery power over Grid when these inputs are providing enough power to sustain the loads? It seems like the current firmware(209) is not capable of doing it even though it is listed under firmware with assistant capability. Currently the inverter uses Grid to sustain loads even though there is enough power from PV and battery. Thanks.
ESS is a topic for itself, and requires a GX device.
Wind and solar priority is only available for the newer microprocessor.
What have you tried so far? Is reducing the AC input current not enough for your requirements?
Hi Chrigu
Thanks for your response. I have tried the system with different loads, but it still runs from grid/mains the whole time. It only uses the incoming power from the mppt’s for charging the batteries. The only way it switches to inverter from mains(passthru), is by switching off the mains input power to the inverter. As soon as I switch main supply back on, it switches back to mains(passthru) on the inverter. Unfortunately I do not have control over the AC input power, the client also requires that should PV and battery power be insufficient, grid should be available as backup to carry the loads. I have not worked with the older units before, only newer ones with GX devices.
Kind Regards / Vriendelike Groete
No ESS and assistant usually requires 412 and above
I don’t think this chip can do that firmware. Or anything above 209 which is before many of the currently more popular assistants existed.
I have a somewhat old school solution for the solar priority
A daylight (day night) switch with an appropriate sized contactor on the ac input. Good sun and during day it disconnects and poor solar days “automatically” connects grid.
Second method to aid things is setting the mppt voltage 0.2v above the inverter charge voltage. An old trick with the old ve can models that don’t support dvcc and external control.
Although you won’t need this if you have the ac in disconnecting.