Hi,
we installed a new system, where we use a Victron Ekrano as a master BMS to collect information from several batteries (400 kWh) via serial.
In node red, this information is then packed into pylontec CAN msgs and sent via socketcan VE.CAN port 1 to a Victron cerbo GX MK2 (where all the Multiplus are connected to.) The cerbo (Firmware V.3.80~39) is receiving it on VE.CAN port 2, (BMS LV 500 kbit/s). Connection is done with a CAT7 cable, Terminators on both ends. Works fine…
except after a few hours, the Cerbo CE.Can port 2 goes into Error-passive, TEC:128, and a handful of new dropped packages on TX. This results in “BMS Lost” Error.
After disabling the can port and enabling again, system runs again for 2-10 hours without any issue.
I can also get it working by disabling and enabling the CAN port on the Ekrano side.
Any idea why this is happening?