Recent content by Henrik

I removed the positive Shunt cable to battery. No new alarms yet. Output towards battery is a bit higher than the mppt tells me but nowhere near 30 v.

I have not disconnected the pos cable yet but I accessed the shunt and disabled the ve network. Currently mppt volage towards battery is 29,4 v

A short comment here. Now my MPPT is in bulk charging mode at 28.9V. That is after I set absoption to 27.4. So the question is really, why do I think the bulk would react from the absorption setting? I cannot set bulk voltage anywhere and according to history, the mppt is mostly in bulk mode...

I need to check if I accidently changed my Lifepo4 factory default settings. I don't remember the float to be at 27V. Do you have the settings from yours? Absorption time seems to be default at 2 hr. Re-bilk voltage offset seem to be 0.2. No equalization. No temp compensation. Low temp cut off...

Not able to. I cannot get BT connection with MPPT as it says connected to other device. Tried logging out of VRM and also disconnecting my Raspberry PI that is connected via USB to all my three Victron devices. Seem that a reset of the MPPT is needed. In my opinion, quality products requiring...

Hmm...maybe I should break the connection between these victron units. Maybe it is a combination of that Victron Inverter and Victron SmartShunt informs the VIctron MPPT about loads, hence the MPPT adjusts abnormally. Will try to break the the internal network for the to see if any changes

I also tested using another voltage meter. Both my manual voltage meters show 30.0V

I now got a new alarm. probably because I drained the battery a little and then charged it up and came to the same situation as earlier. Output voltage set to 28. Voltage meter shows med 30.1. Battery is considered full. BMS tells med 29.5 and it also tells me 0.0A towards battery. VRM shows this

I set it back to standard factory for LifePo4 a number of times. This issue always comes back. Issues came before I started messing around with absorption duration time and re-bulk voltage offset. I agree that voltages could be higher for a small amount of time but my average alarm is about 2-3...

No questions about the three stages being different. I was more wondering why I cannot set the bulk charge voltage setting and only absorption. I have never seen alarms during charge of battery (being well below full). Maybe I should use tail instead of fixed absoption time? I changed to 15...

If I set mppt to 28 it still goes up to 30V :)

Another question, Bulk and Absorption are considered the same. But why does this MPPT have 3 separate lamps then? One for bulk, absorption and float. When at bulk, most of the time voltage seem to be correct. Then when alarms comes, it generally did most of the charging needed. Could it be that...

Yes, MPPT measure with voltage meter shows over 30V. When I started using it I tried it out, setting the BMS to lower settings to see if it kicked in and it did. Not sure why it does not do that now. It would be another thing if it would read wrong, hence act wrong, but it seem to read correct...

I then put some more load on it, about 250W. Still showing to high voltage from MPPT when I measure with voltage meter. I then set MPPT charge voltage to 26. It now measures 26.5. BMS cell voltages are now: 3.436 3.444 3.456 3.447 3.472 3.443 3.414 Not really sure about anything at the moment.

Now I did some more tests as I got more alarms. While alarm was active I measured voltage. It is about 30.4. While having alarm I lower the settings in the MPPT controller to 28 from 28.4. And yes, these 0.4 is seen with my voltage meter. So I would have to lower MPPT settings to 26 or so in...