ve configure is different from connect, though you can do most things in connect. I did not try this with connect.
Might not be able to get it anymore because everything is forcing me to download this. Maybe I need an old download mirror link.
Looks like it might of been my error, it was located elsewhere downloading and will give it a go.
OK so heres some screenshots any input on what should be changed would be great. Reminder its a Multiplus II - 12/500/20 series with 3x 75ah SLA batteries attached. We cant see the SOC because the VE Direct cable is bad. So any way I can see it or ensure the SOC doesnt shut down the circuits (looks like thats disabled) is best. We also want to hit 100% SOC. Perhaps the voltage shut down needs to be adjusted? Everything I have required 12vdc to run so perhaps thats not an adjustment thats needed?
Any changes or advice is welcome, these settings are a few weeks old but this is what was sent to me last trip out there.
Thanks!
First off the Battery Absorption Voltage and float voltage are set way too low. Absorption should be 14.2 - 14.4v, and float 13.6 - 13.8V at 12V the Multi will NEVER charge the batteries, and the battery life may be degraded.
The “Charged voltage” for the shunt should be about 13.8V for 3 minutes. Then as the Multiplus brings the voltage up to 14v, the shunt will reset to 100%.
The virtual switch shots are showing just the default settings, although enabled, the virtual switch will not do anything with these settings.
Do you have any solar charging the battery?
If so I can recommend VS settings to optimise solar use, but otherwise ignore these.
No it is shore power, battery is a backup only.
So in regards youre saying to:
Absorption set to either 14.2 to 14.4v range, and float 13.6 to 13.8V range?
Also are the timeframes for absorption / float etc all fine?
Finally do I make these adjustments in the MultiPlus or the Shunt? If in the MultiPlus do I need to enable VDCC to do this? I dont see in the MultiPlus where I can adjust these settings.
yes, the time settings are ok. No DVCC does not need to be enabled, this relates only to BMS controlled lithium systems.
The exact voltage depends on the battery manufacturer’s recommended settings, but these foltages are generally good. There are also preset AGM batery models in VE configure that you can use.
These settings are made to the Multiplus only. If you still have problems with the shunt, you need to get the VE direct cable from the shunt to the Cerbo working. Then you will be able to check and modify any shunt settings.
Whats the easiest way to apply these settings in the MultiPlus? I overwrote the file…. Or can I manually manipulate these 2 settings in the MultiPlus?
Use the VE configure program to modify the voltage settings. then the file is updated when you close Ve configure. Then use VRM to remotely upload these settings to the inverter. It should not require an inverter reset, so the AC out power should not be interrupted.
Sorry I meant where, as I cant remember where in the inverter I even downloaded the file haha. Also my only choice was to overwrite the file as a .vsc file but my original was an .rvsc file will that matter?
Disregard found it I had to go back to the original conversation that started this all :-0)
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@MikeD under general on that file should I check Enable Battery Monitor or does that not have anything to do with the SOC issue reporting from the shunt? If I need to enable it, what SOC % should be listed for SOC charge when Bulk finished? and I assume for capacity that would be 75ahx3 but what would charge efficiency be?
that enables the Multi’s own internal estimation of SOC, nothing to do with the shunt. If you have the external shunt wiht SOC, and the Cerbo, then that does not need to be enabled. The multi is driven by the sensed battery voltage, rather than the SOC which is an estimated parameter, not a measured one. Hence SOC is much less accurate than voltage, and should only be used as an estimate for e.g calculating time to go…
SOC for bulk finished is usually about 80%, and charge efficiency 60 - 70% but that gets tweaked. Better to use the Shunt values as these will be more accurate.
Thanks!
I was just thinking until I can get the VE Direct cable fixed this is a solution as it will be end of year before I get to that location to try and replace the cable if at all. I have seen efficiency ratings from 80-90 so I wasnt sure. I assume 70% would be 0.70.