question

aaront avatar image
aaront asked

REC ABMS WIFI Module

Hi Guys, have just finishing installing a REC active BMS with a WIFI module integrated with a Cerbo GX and appears to be working correctly, but i have a few questions that hopefully someone can shed some light on for me.

1- I don't seem to be able to change the settings for max charge and discharge current.

2- What is the settings "charger 1 to 4" used for under the charger/ inverter tab

3- How is the float voltage calculated or established as it doesn't seem to line up with the charge hysteresis - end of charge is set at 3.58v pc and hystersis is set at 0.26 pc, GX device under REC tab is limiting 14.4V and 13.8V

I was under the impression that all parameters could be accessed with the WIFI module but it looks like i will need the PC software and cable

Thanks Aaron




BMS
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
dirkmuc avatar image
dirkmuc answered ·

Hello Aaron,

with the Wi-Fi-Module you have the same functionality as with the PC software. To change the values you have fist to unlock the BMS. For settings not accessible via the web frontend you can send the respective serial commands also via the Wi-Fi module.

see also https://www.rec-bms.com/datasheet/UserManual_WIFImodule.pdf

Cheers

Dirk


2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

aaront avatar image
aaront answered ·

Thanks for the reply Dirk, BMS has been unlocked so no problem there. Hopefully its all good now REC has sent me an updated firmware overnight which is going to fix the issues

2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Related Resources

Additional resources still need to be added for this topic