Daly smart bms turns itself off
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DiySolarU
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Hello Sunraiser
I use an Arduino (in my case M5Stack) that reads the DALY Smart BMS data on RS485 every second and converts it to the CAN protocol for the SOLIS Hybrid Inverter 5G. Every 10 seconds I save the data to a Microsoft SQL Databaes (via LAN) running on Windows, based on this great library: https://github.com/mustafakemalgilor/arduino-mssql
I use an Arduino (in my case M5Stack) that reads the DALY Smart BMS data on RS485 every second and converts it to the CAN protocol for the SOLIS Hybrid Inverter 5G. Every 10 seconds I save the data to a Microsoft SQL Databaes (via LAN) running on Windows, based on this great library: https://github.com/mustafakemalgilor/arduino-mssql
Hi, DiySolarU
Thanks for your kindness.
Hallo, wie sind BMS und Solis an den m5stack angeschlossen ? Welche Komponenten werden benötigt für die Verkabelung ?
spongie
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hi did you ever get a solution to this problem? the identical thing started with me 2 days ago after about 2 mths of perfect operation. im seeing a max volt of up to 6.2v with a min at 0.4v at the same time ( for like 2 secs) and i am using Version 20210112-1. 01T then the bms just shuts off .. sometimes it starts back, and other times i have to plug it out and back in did the firmware help you ?
these voltage readings cant be correct, this is what is causing the bms to shut down. i think i have the latest firmware Version 20210112-1. 01T
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DiySolarU
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This is a firmware problem. Upgrading to firmware 20210222 should solve this problem (it is solved for me, I had exactly the same problem). Attached you will find the firmware. I only tested on DALY Smart BMS 16S / 250A HD version DL-BMS-R32-01E. Use DALY PC Software 1.2.8 to install the Firmware. If you have already installed the latest firmware and still have the same problem, it is probably a fault in the wiring or in the BMS. Hope it helps...
DALY_BMS_Software_Downloadlink
DALY_BMS_Software_Downloadlink
Usually when one cell reads high and another low, it's a connection problem. Verify the sense/balance leads are connected properly (people have reported problems with the plug ends). You also may need to clean the busbar to cell terminal connections.
DiySolarU
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For me it was definitely the firmware version 20210112-1. 01T with this problem. I reported this with a video to DALY support and then I got the new firmware 20210222. All problems with wrong voltage (and current) are gone.... The new firmware is very stable and so far I have found no more problem with this release.
spongie
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ok sounds feasible, Ill get that done and let you know the outcome thanks again
spongie
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omg i finally got them both updated. what a mission for a non-computer person. i had to unzip rar files and open drivers and all kindsa fun stuff. took me all day but finally just done the the 2nd one. well thanks again and finger's and toes crossed this works
spongie
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oh well, I guess that didnt work. got up at 4 am and checked the system and the same bank is offline again. I didnt bother to go pull the wires off to reset it as the other bank was at 65% soc, so I just went back to bed. I think what I will try today is to swop the bms with the one that works fine and see if the problem gets transferred to the other bank, at that point Ill be100% positive that its the BMS and nothing elseAgain one step closer from a non-computer person to a computer specialist...
Let us know after a few days if the problems are all fixed now.
DiySolarU
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Can you take a screenshot of the READ parmeter in the PC software for both BMS and upload that image? You also need to set the BMS to 100% SOC when the voltage of each cell is about 3.45 volts. The BMS needs to know where the 100% SOC point is. And the Ah of the battery must also be set correctly in the configuration of the BMS. And the cells must all be TOP balanced, otherwise one cell may go to high voltage very quickly and turn off the whole battery. Even at 65% SOC... It is best to observe the battery voltage of the individual cells when the first cell reaches 3.40 volts during charging. Charging to 3.45 volts is then very fast.
spongie
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ok so this one is from the bms that works fine
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DiySolarU
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I suggest you to change the settings exactly as in the attached picture. These settings have worked perfectly for me for months. The following points are important:
1. automatic sleep time on: 65535 (otherwise the BMS switches off after 1h if no charge/discharge current flows).
2. the value in level 1 must not be the same as in level 2 (the DALY support told me that this could cause problems).
3. Set the rated capacity to your value (280 Ah).
4. set the SOC value to 100% when each cell has more than 3.40 volts when charging.
If the cells are well TOP balanced, then the cell voltage in the range above 3.40 volts should be only a few mV apart (10-30mV) at charging currents around 10-20 amps. otherwise the cells are not well balanced. Then you have to make a new TOP balancing.
If you charge the batteries and leave the PC software on the data monitoring you will see the reason for the BMS shutdown when the BMS turns off (Alarm List). E.g. cell volatage high or so. This would then show you what the problem is.
1. automatic sleep time on: 65535 (otherwise the BMS switches off after 1h if no charge/discharge current flows).
2. the value in level 1 must not be the same as in level 2 (the DALY support told me that this could cause problems).
3. Set the rated capacity to your value (280 Ah).
4. set the SOC value to 100% when each cell has more than 3.40 volts when charging.
If the cells are well TOP balanced, then the cell voltage in the range above 3.40 volts should be only a few mV apart (10-30mV) at charging currents around 10-20 amps. otherwise the cells are not well balanced. Then you have to make a new TOP balancing.
If you charge the batteries and leave the PC software on the data monitoring you will see the reason for the BMS shutdown when the BMS turns off (Alarm List). E.g. cell volatage high or so. This would then show you what the problem is.
spongie
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ok great thanks I will get that done today, however the trouble maker shut down last evening when the charge controllers went offline and I havnt been able to get the trouble maker turned back on. i dunno if today when the charge controllers are running the trouble maker will come back online.
Could you explain which setting from which app can be used to fix bluetooth dropping issue? I have this issue with JBD 100a BMS. Sometime, after awhile, bluetooth could come back.
JBD has smart and helpful technical support. Daly does not.
JBD does use a third party bluetooth interface, and you can get a replacement for under $10. There are even USA sources to purchase a replacement. Probably cost more, but certainly faster shipping.
The JBD bluetooth problem you have is in no way related to the Daly issue.
Thanks for the tip! I’ll try if the issue happens frequently.
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