BMS 1A NEWBIE WITH AN ISSUE

• M

  Mark

  9/3/24, 12:20 PM

  Hello,

   

  I have a REC-BMS attached to a Winston Bty with a Victron set up.  The system came with a new to me yacht. I cannot get the BMS to function.

  I have the wifi module and having watched the you tubes on Updates etc I have managed to get connectivity to the wifi but when I follow up with trying to get the firmware down load i seem to be getting different files to the ones on the latest tutoroals.

  So help please?

  Q1.   What should I be downloading, from where? I have a 1A-xxxx system.

  Q2.  Any links to good tutorials I should study.

  Q3.  Any advice on getting myself going.

   

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• B

  Pro user

  Ben

  9/4/24, 5:43 AM

  There are 2 version of firmware.

  See the text doc, when you downloaded the new firmware.

  https://rec-bms-na.com/

  You need xx.x.1 or XX.x.2 depend on your installation, see same worddoc.

   

  You need to see or you have a one relay system, or a 2 relay system.

   

  The builder from the system has different possibilities how to setup.

  The REC has 4 output, you need to check the system how it is setup.

  If there are no diagrams, you need to follow the cables, and I suggest to make a diagram yourself.

   

  Q2 and Q3, download the manual. 

  BMS's are a bit technical, you need to have a bit off tech understanding to setup yourself.

  See tutorials on REC official website and on the REC/US website.

  https://www.rec-bms.com/

   

  https://rec-bms-na.com/

  If you have any questions, please post them here.

   

  Edit:

  Up to firmware 2.92, there are 2 versions.

  Firmware 2.94 is new, one version for both.

  See txt doc at the downloaded file.

  https://rec-bms-na.com/

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• M

  Mark

  9/4/24, 1:51 PM

  thank you.  i have update to |SW 2.94 HW2.1

  i can see the BM|S and I have Error "Internal Memory Problems Detected" The SD card is hardly used so there must be another memory?

  I have a Victron Smart shunt 1000A on a 100Ah LiFePO4 bty.

  The SOC is not correct and does not change when charging.

  Can I clear the memory fault!

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• M

  Mark

  9/4/24, 3:39 PM

  some how the error has cleared and I have now manually set the SOC to the shunt reading.   

  I now need to understand how I can get the Victron smart shunt to be seen.  Currently there is no option for a 1000A /50mv shunt, there is the option to customise but not sure how that is done.

   

  I would have thought the Smart shunt would have been in the dropdown selection.

   

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• B

  Pro user

  Ben

  9/4/24, 10:49 PM

  @Mark suggestion also have the WiFi unit with newest firmware.

  Sometimes good to start with a new formatted SD card in the WiFi unit. 

   

  The shunt value is just a setting, under "setting" tab. Use "custom", see manual how to calculate the correct value, to type in there.

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• R

  Rick OGM Support Staff

  9/6/24, 3:10 PM

  Hi, congratulations on your new boat!

  To use the Victron smart shunt, you need to have the shunt wires connected across the shunt and treat it as a manual shunt.  You can not rely on the CANBus network for this function as it is a high priority parameter that needs very fast response time.

  https://ogm-energy.com/community/ogm-user-forum/topic/86110/abms-with-smart-shunt

  For a 1,000A shunt the setting will be half of a 500A or 0.009765625

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