AJ22

Hi, I did not get this resolved and the reason is as follows: The Growatt inverter (GROWATT 5000TL HVM) I have is an older model which does not support CANBUS. This was introduced for the newer Growatt models so I had to rely on voltages to control the charging of the Shoto battery. The manual says it does but it actually does not. Do you have the same setup?

Hi All, this is my first post on this forum. I have been trying to establish BMS communication between a GROWATT 5000TL HVM and a Shoto SDA10 5.12 KWH using a cable that was manufactured based on information from each respective manual. When connected between the BMS RJ45 port on the inverter and the CAN port on the battery, I get 4/20 error on the display of my inverter indicating a BMS communication error. The inverter firmware is 500.08/002.00/null and I am also using a wifi data logger ShineWifi-S with firmware 1.7.6.6. I have tried numerous settings on option 36 (LI02, LI07, LI51,LI52) but the red fault indicator still remains on with the 4/20 error displayed. Is the custom cable configured correctly? Does the cable on the inverter side require a ground pin as it currently only has two pins configured (CANH & CANL), the battery side has two pins going to ground in the cable shield (See attached)? Has anybody out there got the BMS working correctly between these two pieces of equipment? I was also told by my installed that the battery does not need an earth if I am running a single battery, not sure if this is accurate? Shoto Growatt custom cable RJ45 pinouts.docx