frankiep

Hi guys! Hybrid inverters got Enable- and Enable+ terminal (in additions to RS485 connections) used for waking up the batteries but how this wake up signal works? Is it a signal from inverter to battery or vice versa? Are they a data signal, dry contacts or live wire?

Hi WannabeSolarSparky! after some busy days i'm thinking about your idea to provide "fake grid"...i think you mean through an UPS right? but what happens at UPS when inverter continue to generate? the energy provided by inverter could damage the UPS? The AC connection between inverter and the house loads is the same, on my inverter i have not EPS output 🤔 If you know what i mean 🙏

sure i just checked the pinout of my inverter growatt. i posted the pinout of huawei for you to see which pin has used the guy in the video to find some similitude with Growatt. Btw i think Enable- and Enable+ are used by the BMS to activate or deactivate the island mode, for this in the video the guy use just Enable- closed to GND 🤔

yes, but the guy in the video use Enable- and GND on the huawei. this is the pinout on COM port of sun2000

backup AC source is the inverter 😅 please take a look to this video basically, on huawei sun2000, you just need to close the contact between Enable- signal and GND to put the inverter in island mode and continue to perform AC to the house. Of course you need to build a circuit (for example a contactor on the main grid input) for disconnect phisically the grid. The guy in the video used an interlocked interruptor to disconnect the grid. I would know if on the Growatt MIN TL-XH i can do the same "hack"...

please take a look to this video

nono i do not want disable the export, i want get energy from the inverter during grid absense period (in my area they are common unfortunely)

Hi guys! There is a way to enable island mode (or "pure off-grid mode") on a MIN TL-XH (grid-tie) without Backup Box? Maybe using Enable+/Enable- pins of SYS COM port as is possibile to do on Huawei SUN2000 (as shown here)?? thanks