Unable to change DALY BMS setting 'diff volt protect' and BMS is shutting down...

[kjemmo]

I have an Eve 280ah pack and a Daly BMS.

Lately the BMS is shutting down all the time. I suspect that it is the the protection parameter 'diff volt protect' that causes the BMS to shut down.

Mine is set to 0.26V, but I often see voltage difference at up to 0.7V while discharging. That is why I suspect that it is this setting that causes the shutdown.

When the pack is resting there is no voltage difference.

When I try to change the 'diff volt protect' parameter, I cant. I can change any other parameter, but with this one nothing happens when I click 'Set'. I also tried to do a factory reset in the app, but it had no effect and all parameters remained the same. Any tricks to force change the parameter.

Are my assumption about diff voltage causing the shutdowns correct?

Please see the attached images.

No voltages difference when resting

Voltage difference when discharging

Unable to change the diff volt setting

 

[cwilken]

I am having the same problem that the phone app wont change the setting under "dif volt protect". It does what it looks like yours is doing. You put in the new value, push set, then password 123456, then your new input value just sits in the input field. The value does not change on the left.
My BMS setting here is set to 0 and I would like to change it to .1 but it wont. Whenever I put a big load on it for 10 or 15 minutes the BMS shuts the battery down as the cells begin to diverge in their charge.

Other settings in this app work fine but this one doesn't. Does anyone have a work around or ???
Ive been trying the pc software connection now but there are like 8 choices of IC to connect to. Im not sure how to find the chipset for the sinowealth software.

 

[Just John]

I have an Eve 280ah pack and a Daly BMS.

Lately the BMS is shutting down all the time. I suspect that it is the the protection parameter 'diff volt protect' that causes the BMS to shut down.

Mine is set to 0.26V, but I often see voltage difference at up to 0.7V while discharging. That is why I suspect that it is this setting that causes the shutdown.

When the pack is resting there is no voltage difference.

When I try to change the 'diff volt protect' parameter, I cant. I can change any other parameter, but with this one nothing happens when I click 'Set'. I also tried to do a factory reset in the app, but it had no effect and all parameters remained the same. Any tricks to force change the parameter.

Are my assumption about diff voltage causing the shutdowns correct?

Please see the attached images.

No voltages difference when resting View attachment 60010

Voltage difference when discharging View attachment 60011

Unable to change the diff volt setting View attachment 60012

You should clean and check your busbar connections, that's the most likely problem.

 

[Just John]

I have an Eve 280ah pack and a Daly BMS.

Lately the BMS is shutting down all the time. I suspect that it is the the protection parameter 'diff volt protect' that causes the BMS to shut down.

Mine is set to 0.26V, but I often see voltage difference at up to 0.7V while discharging. That is why I suspect that it is this setting that causes the shutdown.

When the pack is resting there is no voltage difference.

When I try to change the 'diff volt protect' parameter, I cant. I can change any other parameter, but with this one nothing happens when I click 'Set'. I also tried to do a factory reset in the app, but it had no effect and all parameters remained the same. Any tricks to force change the parameter.

Are my assumption about diff voltage causing the shutdowns correct?

Please see the attached images.

No voltages difference when resting View attachment 60010

Voltage difference when discharging View attachment 60011

Unable to change the diff volt setting View attachment 60012

FYI, none of the screen shots show an error condition. I never tried to change the voltage difference, never had a problem. What error does it give when it shuts down?

Why is overcharge protect set to 150 amps, and overdischarge set to 100 amps?

 

[cwilken]

I am having the same problem that the phone app wont change the setting under "dif volt protect". It does what it looks like yours is doing. You put in the new value, push set, then password 123456, then your new input value just sits in the input field. The value does not change on the left.
My BMS setting here is set to 0 and I would like to change it to .1 but it wont. Whenever I put a big load on it for 10 or 15 minutes the BMS shuts the battery down as the cells begin to diverge in their charge.

Other settings in this app work fine but this one doesn't. Does anyone have a work around or ???
Ive been trying the pc software connection now but there are like 8 choices of IC to connect to. Im not sure how to find the chipset for the sinowealth software.

Two additional things.
1. I went to google play and looked at the android app. There is an email address of the developer. I emailed him my problem and a screen shot of the setting that won't change on the app and what Daly BMS i was using.
2. My main problem I think now was not my BMS shutting off the battery but my 80 amp breaker that goes off after 10 minutes @ 26amps (AC Unit). I switch to another battery system I had and it still shuts off when I get this continuous draw. I have switched to a high amp battery switch (to isolate battery) and a 80 amp ANL fuse in series.

 

[Just John]

Two additional things.
1. I went to google play and looked at the android app. There is an email address of the developer. I emailed him my problem and a screen shot of the setting that won't change on the app and what Daly BMS i was using.
2. My main problem I think now was not my BMS shutting off the battery but my 80 amp breaker that goes off after 10 minutes @ 26amps (AC Unit). I switch to another battery system I had and it still shuts off when I get this continuous draw. I have switched to a high amp battery switch (to isolate battery) and a 80 amp ANL fuse in series.

That happens a lot with cheap Chinese breakers.

I use a high quality USA made breaker and I've never had a problem. You get what you pay for, and with breakers, don't scrimp, it's dangerous. If they have what you need in stock, here is where I got mine.

Eaton Bussmann 285 Series Resettable Circuit Breakers Surface Mount up to 150A

These high-amp, Type III circuit breakers are typically used in automotive auxiliary and accessory circuits for trucks, buses, RVs and marine applications. High-amp circuit breakers also have applications in battery charger systems and DC audio systems.

powerwerx.com

Eaton Bussmann 187F Series Resettable Waterproof Circuit Breaker Surface Mount up to 200A

Marine Rated 187 Series Circuit Breaker features a manual switching and heavy duty circuit protection from 50 to 200 Amp loads. Type III waterproof circuit breakers are typically used in automotive auxiliary and DC accessory branch circuits for trucks, buses, RVs and marine applications.

powerwerx.com

 

[BajanAlan]

Two additional things.
1. I went to google play and looked at the android app. There is an email address of the developer. I emailed him my problem and a screen shot of the setting that won't change on the app and what Daly BMS i was using.
2. My main problem I think now was not my BMS shutting off the battery but my 80 amp breaker that goes off after 10 minutes @ 26amps (AC Unit). I switch to another battery system I had and it still shuts off when I get this continuous draw. I have switched to a high amp battery switch (to isolate battery) and a 80 amp ANL fuse in series.

Pot something in the field under the on u are setting and press set on that one. Will change one above

 

[minitt]

You should clean and check your busbar connections, that's the most likely problem.

I found the same issue on mine. One of the bus bar was loose and was causing high volt variance among 2 cells. After tightening it and cycling once fixed it.