Personally, the question I ask myself is at how many amps the thermal protection will come into operation.
Regarding the MCCB TOMZN I don't even know its trip curve.
Is it B, C or D?
No technical information which is a shame.
Even in the case of curve B we can imagine that a MCCB of 100A will...
I would like to tell those who are interested in a multi-bms version not to buy too much ESP32 or other hardware in advance. If we want to get it right, it's more than likely that a dedicated PCB will be required.
When your AIO switches to Utility, the inverter no longer supplies the loads but remains ready to take over in the event of an AC IN failure.
If you cut AC IN your AIO instantly switches to the inverter. The inverter is not ON not OFF but READY.
In this case, my AIO consumes 30W against 50W in...
1) are your PV panels as badly exposed as mine ? (see post #1)
2) regarding the behavior of the SCC MPPT see post #17 and #19 with my tests, maybe you will have the same results at home
On this graph you can see that the SCC MPPT managed to power small loads of 6W (A) and 25W (B) with low...
Yes it works but:
The solution is less pretty than using Atomic CAN base
GPIOs 1 and 2 can no longer be used to connect a BMS via UART
So why not buy Atomic CAN base?
@cinusik
The following conditions must be met for the BMS to be combined.
If one of these conditions becomes invalid, the BMS is decombined.
BMS switch charging ON
BMS switch discharging ON
BMS no errors
Combined switch ON
Attention ! with the new JK-PB series and the RS485 component from...
Thank you for your answer, you reassure me.
Indeed when I spoke of 15° on another post, it was good in relation to the horizontal and I may not have been understood.
FYI MCP2515 is supported. You can use the classic ESP32 which is equal to Atom Lite (ESP32-S3 / Atom S3 are more powerful). I don't remember what config you have, I know you have several different brand inverters. What you need to know is that with this new version it is possible to create...
As much time as necessary, I don't know, it depends on the imbalance created.
Edit: but don't worry it might just be one day. Configure your Deye to charge from the GRID and let the cells balance until you see the Charge Status “EOC” in HA. Maybe deactivate the float switch before starting the...
From March April the sun will be there from daybreak. In winter it's very sad here, we even think about moving.
Any comment regarding question 2 and the behavior of the MPPT controller?
I advise you to inform yourself well about this inverter before buying it. I just discovered yesterday that my EAsun SMX II 5.6kW also has a high idle consumption and on an isolated site it will be a problem in winter.
Consumption from battery :
Victron will be more expensive but idle...
Personally I haven't watched it yet. I stopped programming since I left on my trip. I don't have any plans for future projects yet, just ideas and I found a nice open-hardware PCB that maybe could be used. It is necessary to talk about all this with @MrPablo.
If you wish I can add you to our...
It seems that you are having the same problem as txubelaxu, it is the default values of the sensors that are displayed when no BMS is combined. We can continue on the subject below:
https://github.com/Sleeper85/esphome-jk-bms-can/issues/53
V1.16.4 on GitHub
Improved Charging Logic for ESP32 startup/reboot and Float charge (the voltage decreases slowly)
Add CAN ID 0x356 bytes [06:07] cycles for Sofar
Change switch name in order to be able to differentiate between the BMS switches and those of the CAN application
FYI, I had fun...
Currently RS485 is only used for connection to the new JK-BMS-PB.
Support for the new JK-BMS via UART-RS485 is achieved thanks to the @txubelaxu component.
In his example and his code he uses an RS485 board with a TALK PIN (which is not the case with good bidirectional boards).
So I don't know...
Hi @uksa007
My goal is not to throw stones, I just tested and analyzed your script in different situations and I am telling you what I discovered with the sole aim of improving it.
That said, this is probably useless because you have already done it in the new version 1.16 which I will happily...
I agree about using a single ESP32 to centralize information and communicate with the inverter on the CAN bus but using MQTT via WiFi is not a reliable solution for linking to BMS.
@Der_Hannes if you wish you can work with us to improve this project ;)
This is my first experience with a hybrid inverter and I wanted to test EAsun knowingly.
It was only after receiving it that I discovered it was a SRNE.
It was obviously the low price of 543€ that attracted me.
It's been tested at my place for 1 month but not really in production yet.
I...
@claus
It's possible to use SBU mode with the charger in Solar first mode.
In this case, when the AIO reaches the "bat 2 grid" voltage, it switches to Utility and at the same time recharges the battery up to the voltage of the "grid 2 bat" parameter, then returns to the batteries.
Otherwise...
I too was warned by a friend who owns 3 EAsun SMG II 5.6kW.
Here's what my friend said:
All I can say is that when the EAsun work, they work well but they are still a bit short-lived.
Out of 11 in production at home and around me, 6 have already broken down once and often in the first 3...
Hi,
It works well with the Deye, I have a string of 8 panels connected to MPPT. On cloudy days with sunny spells, I sometimes have current peaks at 16.7A o_O and that doesn't seem to pose any problems.
That said MPPT Deye are not perfect, especially when there is shadow on the panels, see the...
See this comment
Inverter and BMS Voltage calibration + test with different Absorption Offset V.
For information here is what I use with Deye.
# +--------------------------------------+
# | Battery Charge Settings |
# +--------------------------------------+
# This is max...
I simplified the code, it has exactly the same behavior as your version V1.13.3 except that I added a 'Rebulk Offset V.' slider which allows to exit the 'Wait' state if necessary without needing to activate 'Bulk Manually'.
This therefore prevents microcycling in the event that the ESP32 is...
Strange, in general we don't use these GPIOs because they are connected to uart0 for logging.
Do you use other UART connections on this board?
You should know that the ESP32 has 3 UARTs including 1 which is already used for logging, to use this 3rd UART it is necessary to release it.
So...
@uksa007
Normally with the above parameters and a 53.5V battery, when starting I have to execute the procedure framed in pink but it does not work for several reasons.
It's late and it's a bit long to explain so I'll give more details tomorrow.
I modified this part of the script to correct...
Yes thats exactly it.
I just think your battery is not balanced, this is work that needs to be done before putting it into production.
But if we want, we could add lines of code in the script. If the overall voltage of the pack is 54.4V (3.4v/cell) and a cell reaches 3.5v or 3.55v then the...
@virus100b
Normally there is an RGB LED on your board connected to GPIO 8. Try using the yaml that I created for ESP32-C3 and if I need to make corrections tell me.
When the LED flashes purple, the CAN bus status is OK.
It seems that I have a behavior similar to you. My MPPT controller needs 0.9A to work properly.
https://diysolarforum.com/threads/winter-production-and-mppt-behavior-at-low-light.52238/
PYLON and PYLON+ I don't really know what impact this information can have on the inverter. This makes me think that I could change this in the multi-bms version.
How many packs do you have?