Does JK BMS log Cell Under Voltage Protection (Cell UVP)?

[burgerking]

This Morning, my Deye shutdown (due to low battery) and I went to investigate the cause.
My Deye is configured with Shutdown Voltage of 49.5V or an average cell voltage of 3.010V.
My 16s JK is configured UVP of 2.800V and far lower than the 3.01V.
However, it is possible one of the cells went lower. So I checked JK logs and found nothing recorded.

I have seen my JK logged Charge/Discharge Over Temperature Protection and Over Voltage Protection (Cell Over Charge Protection), but I haven't seen it logged Cell Under Voltage Protection.

Can any attest that JK indeed log this event at all?
I'd appreciate if you could post some of the other error events for future references.

Thanks.

 

[Steve_S]

Sadly the internal logging of JKBMS is CRAP ! The Log does NOT roll over and contains only the first 50 Entries and then locks up.
This has been reported to JK & Hankzor (supporting vendor) several times, they acknowledged it is a problem and committed to fixing it along with other Software flaws in November of 2022 and then they disappeared from the forum and from interacting with us...

Hope it Helps, good luck

 

[burgerking]

oh.. didnot know.
i was out of the loop for a few months..

 

[Steve_S]

One suggestion, is to go over the BMS Settings, the factory defaults for LFP is terrible ! They had been advised MANY times and they said they would correct it BUT did not yet as far as I am aware. Check the Undervolt Delay Timer, if the timer expires when a surge demand lasts too long the BMS will drop discharge (as it should).

Here are my current settings which are corrected... also look at the temp settings etc... verify them all.

Steve_S-Tech: My Final Config for Midnite Classic SCC & JKBMS' w/ Large Bank (works amazingly well) Includes Charge Profile & BMS Config

INTRO: I have debated posting this for a while until I got everything tweaked in and working as best as possible. The End Result is Gobsmackingly Good ! I cannot speak for other SCC and such as each is different & unique in their own ways BUT this may likely be a Good Reference. Civility &...

diysolarforum.com

 

[burgerking]

Undervolt Delay Timer

There is timer when it reaches Undervoltage?
Where is this variable?
Attached are my current settings and system logs.

I changed my over temperature to 40 yesterday; will bring it down to 39C once I fix the cooling.