I was playing around with the AC-In disconnect feature in order to make more and better use of my batteries. This all worked fine on cloudy days, but it became a problem on sunny days.
I have a solar array with inverter connected on the AC-Out of the Multiplus-II. As long as the solar array is not producing more than is required by my house or to charge the batteries, all is well, but if the array is producing more energy, the Multiplus seems to keep trying to push that energy into the batteries, which eventually causes and error and the Multiplus to temporarily shut down. Obviously all that extra energy has nowhere to go when it is not tied to grid.
It would be nice if there was a setting that would enable connecting to grid if the AC-Out power is below a certain limit. Currently there is an option to connect when power is above a certain limit, but there is no lower limit that can be set.
It should frequancy shift and drop the pv inverter production to zero… This is programmable in the pv assistant or ess assistant
If the pv inverter does not respond to frequency shifting install it on ac 2 out and use the generator assistant to switch it on and off.
The other possible way to create your ideal use case solution is take a look at node red as it is possible to have it natively on the GX and create a flow that connects the inverter when those conditions are met.
Does AC-OUT2 allow for power feed-in like AC-OUT1 does? I currently do not have a GX, but it’s on its way. The SolarEdge HD Wave inverter that I have now is not configured to respond to frequency shift, but it should be able to do it. Sadly though, an installer needs to come and enable it, I can’t do it myself.
Good to hear you are getting one as ess assistant does not work without it. You will see in the manual it is a requirement.
And is possibly the reason why things are not working as expected.