This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
Hi,
Yesterday and today, I experience several "Low voltage alarms" reported on the CerboGX web page (Multiplus II 48/5000/70-50, Pylontech batteries 4.8 kWh, connected to grid and SMA solar inverter). The latest alarm occurred at 23:14, which corresponds to the last hole in the voltage and current curves.
The same holes can be found on the SOC curve:
Any idea of what is going on?
Thanks in advance.
Can the Pylontech's BMS disconnect the battery? If it can, then that would also lead to Cerbo shutting down (so gaps in monitoring) even during the day since there is no MPPT to power the DC side. Just a guess. I might be completely off-track on this.
The first alarm in this sequence started from August 13th at 6.49 pm. On August 13th in the morning, I modified DVCC settings to limit charging power to 0 W until noon (I needed power to charge the car and I did not want to spend power charging the home battery) and then to 500 W (10A, instead of 1700 W in configuration, there is so much sun power available during Summer that battery gets to 100% in all cases). This limit of 500 W remains until now. There is a so high correlation between these alarms and the modification of DVCC settings that I will revert to the configured limit, at least for testing. I'll see if alarms continue to occur.
