HUAWEI SUN2000 USER MANUAL Pdf Download
To ensure the system response speed, you are advised to connect less than 30 cascading SUN2000s on each COM port of the SmartLogger. The
In the installation we have a Huawei SUN2000 solar inverter, a Huawei battery and some solar panels =) Huawei's own inverter has Wifi connectivity, I don't use it because I've had a bad experience with that device and my Unifi network, so to the Huawei inverter we will connect an Elfin-EW11.
Huawei FusionSolar Smart PV Management System shows that the communication with the inverter is interrupted. The RS485 cables among inverters are loose or disconnected. The PV string is not properly connected, and the inverter has no DC input. The baud rate or RS485 address of the inverter is changed. The Smart Dongle is faulty.
We will connect the Huawei inverter to Home Assistant via Modbus RTU, we use Elfin EW11 or EW11A adapter, which as we have mentioned is a Modbus RTU to Wifi converter. It comes with a cable that has a reset button on one side that can come in handy to reset the connection, and on the other hand a green connector with 4 Tickets.
Starting from firmware updates released in December 2021, Huawei has closed the Modbus-TCP interface on the network to which the inverter connects. ie. If the inverter is connected to your home network on 192.168.1.11, it will no longer be possible to connect on that IP.
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