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colins avatar image

Baud rate conflict 250/500kbit/s - Parallel Quattros-Cerbo-Pylontech-250/100MPPTs-Lynx....

Off-Grid system has 2 x Quattro 48/10000 in Parallel with 24 x Pylontech US2000 & LV HUB, Cerbo GX, Lynx Distribution system inc Lynx Shunt, 2 x 250/100 VE.Can MPPTs ground array, 2 x Fronius 6KW PV Inverters roof array. Perking 12kVA Generator. All kit a few months old. All Firmware updated to the very latest.

Following the Victron documentation Pylontech (Type B cable) to Cerbo VE.Can BMS connections. MPPTs and Lynx Shunt to Cerbo VE.Can connections. Quattros to VE.Bus connections. DVCC enabled, settings as per the book.

Problem: With CAN-bus BMS (500 kbit/s) CAN-profile in the CCGX as per the book, the MPPTs and Lynx Shunt disappear. They reappear if the baud rate is set to 250 kbit/s. Various problems manifesting such as auto-run generator stops working etc.

Am aware that others have had similar issues with the 250/500 kbit/s conflict. Any suggestions how to get round this - thinking switch the MPPTs to VE.Direct connection instead of Can but hate work-arounds and want the correct solution!

Thanks in advance!


cerbo gxmppt smart solaroffgridPylontechFronius
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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @ColinS

did you read the manual?

https://www.victronenergy.com/media/pg/Cerbo_GX/en/installation.html#UUID-36e56fea-f89d-83ed-3b7c-92632551a2bf


you need to connect the 250 kbps products to the ve.CAN port, and the 500 kpbs to the BMS CAN port

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Thanks Daniel. We've gone through all the connections and checked against the manual again. The system is working but the Pylontech batteries are not visible on the BMS-Can (Settings/Services/BMS-Can port). Is that normal for third-party batteries such as the Pylontech?