BMS COVP Not Working?


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Sonic01

Member
Joined
Sep 19, 2017
Messages
125
Hi Guys,

Am I missing something here? I've set this up on 4 BMS, 2 it worked, 2 it didn't?

As you can see from the images below, I've set COVP to 4.1v and release to 4.0v, and the charge fet is shown as disabled with the COVP alarm... yet it's still allowing charge current through?

Thanks in advance if anyone is able to help:(


image_ofptrh.jpg


image_xjvpxv.jpg
 

Redpacket

Active member
Joined
Feb 28, 2018
Messages
1,434
Not sure which section allows/overrides the other, but in the "High Protect Configuration" section the COVP limit shows 4.250mV which it doesn't look like you've reached, so maybe charging=on is expected?
Maybe test with that value lower?
 

Sonic01

Member
Joined
Sep 19, 2017
Messages
125
Redpacket said:
Not sure which section allows/overrides the other, but in the "High Protect Configuration" section the COVP limit shows 4.250mV which it doesn't look like you've reached, so maybe charging=on is expected?
Maybe test with that value lower?

yeah i tried lowering that one to 4v as well, it was still charging :(
 

Redpacket

Active member
Joined
Feb 28, 2018
Messages
1,434
Might have a bug or two?
Don't suppose the old "quit the s/w & restart" helps?
Maybe power cycle (power off, then on again) the BMS board after changes made, saved, etc?
Do the menus show the s/w versions?
Any way to update the firmware? Can manufacturer help?
 
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