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Hi, I have an installation with an 8kw Quattro and a 3kw Fronius AC coupled. 30kw of BYD Premium LVL. Also has 5kw solar on MPPT.
The Quattro shifts the frequency as expected when the battery is full, but doesn't drop it back to 50htz when the sun goes down. In some cases it drops it back at 2 or 3 am, and in the case of the attached PDF, it held it up until 6.50am the next day. Note the battery is down to 83%SOC. Freq graphs.pdf
Hi @Lawrence,
This behaviour is described here - https://www.victronenergy.com/live/assistants:pv-inverter-support#q1_-_the_system_is_locked_to_53_hz_and_does_not_resume
Please check that the Multi is correctly configured for lithium batteries and the absorption/float voltage.
Hi @Guy Stewart (Victron Community Manager)
Its not locking out at 53hz, its sitting at 52.72.
And i did read that and check all my settings. VE config settings.pdf
When the sun goes down with only 200w load the battery voltage is sitting at 53.1 on both the Battery monitor (BYD via CAN) and the VE Bus
I have a 3kw diversion load on AC2 out running off assistants. Ive noticed that once the Quattro lifts the frequency, it does it in one jump from 50 to 52.7, once up, it stays up the rest of the day, even with the 3kw diversion on and only 1500w coming from the MPPT
I might have to pass this one up to the chain, but before I can. The first thing they will ask is can you please confirm firmware version on the Quattros and the Assistant (in VE.Configure) to make sure that they are current latest release?
