SOFAR ME3000SP

Tinbum
Posts: 1112
Joined: Mon May 31, 2021 9:55 pm

Re: SOFAR ME3000SP

#21

Post by Tinbum »

Tinbum wrote: Sun Aug 11, 2024 11:02 pm What are the settings in the BMS's?
85no 58mm solar thermal tubes, 28.5Kw PV, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, 8kWh Growatt storage, 22 x US3000C Pylontech, Sofar ME3000's, Brosley wood burner and 250lt DHW
GRUMPY
Posts: 43
Joined: Mon Jun 20, 2022 5:56 pm

Re: SOFAR ME3000SP

#22

Post by GRUMPY »

i will get the settings from the bmss
Moxi
Posts: 2221
Joined: Sun Oct 31, 2021 3:46 pm

Re: SOFAR ME3000SP

#23

Post by Moxi »

nowty wrote: Mon Aug 12, 2024 10:44 am
Moxi wrote: Mon Aug 12, 2024 8:32 am I'm just wondering if the problem is the depth of discharge figure?

Looking at the screen you have said "I want to be able to discharge 80% of the battery" BUT what if the logic is written so that 80% discharge means only 20% of the battery is used ? so then the inverter tries to start charging a battery that's 80% full at 50Amps which fires up the overvault alarm as the BMS requires a lower amperage above the 80% point?

If you set the DoD to 20% will it then charge at 50 amps without fault?

I'm probably way off the mark but thought I would mention it.

Moxi
Its not Moxi, I have one.

Only thing I can think of is drop the charge voltage down a touch to 58V or even 57V and see if that helps.
Cheers Nowty,

I had to ask as on my Solis its 20% and I would have felt silly if I hadn't mentioned it just in case.

Stay with it Grumpy, the forum hive mind doesn't often fail.

Moxi
GRUMPY
Posts: 43
Joined: Mon Jun 20, 2022 5:56 pm

Re: SOFAR ME3000SP

#24

Post by GRUMPY »

Hi
is this the settings you requested from the bms





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GRUMPY
Posts: 43
Joined: Mon Jun 20, 2022 5:56 pm

Re: SOFAR ME3000SP

#25

Post by GRUMPY »

also my jk bmss have no communication to the sofar units
Tinbum
Posts: 1112
Joined: Mon May 31, 2021 9:55 pm

Re: SOFAR ME3000SP

#26

Post by Tinbum »

Yes,
It looks as if you haven't changed your settings from default.

You have COV set at 3.6v which equates to 57.6v so the BMS will turn off at that voltage.

Your 'continued' charge current is 25A.

Your UTPR and UTP are also incorrect.
85no 58mm solar thermal tubes, 28.5Kw PV, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, 8kWh Growatt storage, 22 x US3000C Pylontech, Sofar ME3000's, Brosley wood burner and 250lt DHW
Tinbum
Posts: 1112
Joined: Mon May 31, 2021 9:55 pm

Re: SOFAR ME3000SP

#27

Post by Tinbum »

GRUMPY wrote: Mon Aug 12, 2024 3:39 pm also my jk bmss have no communication to the sofar units
That explains it even more.
85no 58mm solar thermal tubes, 28.5Kw PV, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, 8kWh Growatt storage, 22 x US3000C Pylontech, Sofar ME3000's, Brosley wood burner and 250lt DHW
GRUMPY
Posts: 43
Joined: Mon Jun 20, 2022 5:56 pm

Re: SOFAR ME3000SP

#28

Post by GRUMPY »

thanks for reply
I have not changed my settings from default
would you know what they should be set to
thanks
GRUMPY
Posts: 43
Joined: Mon Jun 20, 2022 5:56 pm

Re: SOFAR ME3000SP

#29

Post by GRUMPY »

My continued charge current is 25 amps
is this what the bms is set to receive and will not accept above that figure
does this mean i have to up the continued charge current figure
please advise
MrPablo
Posts: 273
Joined: Mon Oct 17, 2022 1:26 pm

Re: SOFAR ME3000SP

#30

Post by MrPablo »

You can see some recommended JK BMS settings (for LFP cells) here - https://off-grid-garage.com/my-settings/

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These are a good starting point and should improve your experience.
10x 405W JA Solar panels (4.05kWp) @ 5 degrees
3x 405W Longi panels (1.22kWp) @ 90 degrees
16.5kWh DIY LifePo4 battery
Solis inverter/charger
0.6kW Ripple WT
64kWh Kia E-Niro
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