I am setting up an ESS system with 2xMultiplus2 48/5000 and 1xMultiplus2GX 48/5000 configured in 3phase mode to also provide 3phase AC for my heat pump. It has a battery storage of 20kWh consisting of 4xAccuratTraction 24V/200AH (5.1kWh each). These batteries are connected in 2 groups of 200Ah/48V each and have an integrated BMS. Unlike expensive batteries such as Pilontech, they can be charged and discharged at 1C. The battery system can therefore be charged and discharged with a maximum of 400A at 48V (approx. 20kW). Each group has a SmartShunt500A for monitoring the state of charge and the midpoint deviation of each group. Each SmartShunt is connected via a VE.direct and a USB adapter. An ET340 is installed as SmartMeter, connected to the GX via RS485 and USB. To charge the batteries there are 4xSmartSolar250/85 CAN, 2xSmartSolar250/70 CAN and 1x SmartSolar150/70 CAN which draw their energy from 61xTrinaSolar 405W. After completing the inverter installation, I tested the system for about 4 weeks with a solar charge controller (operated with a mains adapter) for testing purposes. During this time I continued to expand the system. Since one week, I have brought the system to the final state on the CAN side and unfortunately had to notice that the GX device makes a cyclical reset. This is indicated by the two LEDs on the network connection lighting up briefly and the wifi access failing for a short time. I am using the latest SW version (venus-swu-nanopi-20230412212730-v2.94.swu) on the GX unit. The CAN bus is equipped with a terminating resistor on each side and has the following cofiguration:
After a RESET, all solar charge controllers are visible with their "self-defined" names and the current power. However, the power values and the "self-defined" names then disappear over time and the "default" names are displayed.