yes, i did it many times, cerbo reset, ve bus too,
And firmware were updated after system crazy. It not helped at all…
Very interesting.
I am finding a few things on your system interesting.
One being the massive voltage difference on the DC bus and the battery terminals. The battery terminals makes sense as it would be programmed for 52 so feedback would be then at 52.4v. but why such a massive voltage difference? Is it actually that high on the inverter terminal?
I am thinking also since pylontec is the compatible battery that should be the one set as the controlling BMS in DVCC. Having that set would eliminate one potential problem.
yes, its really strange and it happen.
MPII and MPPT are programmed for 52 absorbing voltage and 51V float. And BMS pylontech and TurboEnergy wont allow to overcharge, but still i happening.
55,6V but its blink with 52.X
I have idea to unplug BMS Pylontech from cable and delete programing modes in CerboGX. To let work Cerbo BMS alone.
I did it now, but 3 errors occur. No BMS conect and MPPT Error 67. BMS not connect or something. + low batery error.
And have asking for Dynamic ESS is ON and sheduled battery balancing.
Is that why battery wont discharging at evening? How long it may take? Its 2,5day.
Is the fusing between the battery bank and the system ok?
yes, and system can be charging. When i manualy set to inverting then everything is work.
now got new error Low Battery Alarm.
With 3.5X Victron adjusted the charging algorithm for Pylontech maybe that doesn’t work well with the two BMS’?
But that isn’t a supported setup anyway.
trying roll back to version 3.50 that worked for 100% but cant, downloaded swu file and paste into pendrive that is connected to cerbo and dosent see anything
System started work, turn off 2nd bms option in ve3 config.
But pylontech seems work strange.
TurboEnergy as rock 52V and stop.
Pylon charge and discharge charge, discharge and voltage grows up.
Till 53,7 and fast discharge then charge and still high cell voltage.
After 2h or so. Discharge and keep 52v around.
Maybe its an feature Pylon or no idea why it do that.
Is is interesting how many different voltage readings there are.
If that is on a common bus bar it is weird
VE bus 52.82v
Turbo 52.16v
Pylon 53.09v
have you checked with a digital meter?
Yes, and not verified them.
But 52,82 looks like average both.
System almost work as should but still in UPS mode and that make me crazy.
Tried Dynamic ESS too and wont help…
I had this exact same bug after a firmware update. It must be a software bug and prevented my system from working properly.
Disabling Vsense in VeConfigure fixed it.
Be careful here, see that:
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Yes, i unplug 1 panel from each tracker to prevent that situations in future.
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@Skipper
Nice observation. Correct 450v is the max at low temps.
That needs some attention.
That should sort that out @Pierun
Your VOC should be 408V
i did as you said, turning on Disable VSense.
but dont think that helped me.
MPPT have less Voltage now, its should be good with overload. And looks that help. But still
MPII have problem with keeping ESS ON, it automaticly turn it OFF after few hours average. Something after 30min when I turn it ON it will go OFF by itself.
And system still work as UPS only, Self Consumption doesnt work.
Yes, my VOC was under 410V usualy when Panels were working. When is not on load then it goes up.
Now everything looks fine even without load and with sunny, low temp.
This should be on. It is used to find hardware faults. I don’t thing that is the issue here.
That is the VOC (Voltage Open Circuit) meaning voltage with no load.
How is the battery bank physically wired up?
How are wired?
Separetly by own fuse with Turbo energy. Connected via Victron Lynx and Distributor.
addes again ESS… and still not helping. system generating no errors after reducing voltage. But wont work as should.