question

Yes I did see the post but was not clear on cables and dip settings. The post is very helpful, and shows the rigt way. I am really angry about worrying manuals.

PROBLEM IS SOLVED - Here my clarifications and findings:

The post https://community.victronenergy.com/questions/129009/lv-hub-troubleshooting.html describes the right way - thanks to perma-batteries for the time spent! I will add my comments in their instruction:

• VERY IMPORTANT : Adress of the LV HUB must be : 000111 (not shown in any Pylontech manual !)
  
• -> I did it, and it works!
• Cable used : Victron Type A (from "CAN OUT LV HUB to GX).-> YES type A
  
• Cable used to connect Master US3000C battery (group 1) to the LV HUB port "1" : specific cable supplied by Pylontech (PIN 1/3 : null), with blue tag on it -> cable has SN WI0SCAN30RJ1, refer to US3000C manual page 15 .
• You need to use straight UTP cable to connect each stack (B/RS485 to ACAN to slave, and so on). You can use the Pylontech cable with the SILVER tags on it shown "Battery - Battery "... -> cable has SN WI0SCAN35RJ3, with SILVER mark: Bat-Bat, refer to US3000C manual page 15. Probably any other LAN cable where pins 1 to 8 are directly connected.
• You have for example 36x US3000C, 3x stacks of 12x US3000C. You let all ADD of the batteries as defaut (all UP). Here's the procedure ->
  
  NOTE: The above picture is WRONG!! Wrong in https://en.pylontech.com.cn/products.aspx?id=47
  and even on their website: https://en.pylontech.com.cn/pro_detail.aspx?id=123&cid=23
  Next picture from US3000C manual is RIGHT: https://en.pylontech.com.cn/download.aspx?id=201:
  This picture is as decrcibed in the post by perma batteries.
  
  
• Disconnect LV HUB from master battery.
• Boot up every single battery, sequence 1-2-3 .... to the last battery.
• Then you should hear an alarm buzzer which goes like this " bip, bip, bip" (three times). That means every battery is online and connected.
• Then you change the DIP of ONLY the master battery of GROUP 1 to 0010. (please find pictures attached). -> Again, descrption is wrong in the US3000C manual
  Maybe they refer to the wrong assembly of DIPs. As a picture was missed, I attach my one:
• .
• Then you connect the master battery to the LV HUB (using proprietary RJ cable with PIN 1-3 null). Use that specific cable, otherwise communication won't work.-> Yes. the blue labelled cable with SN WI0SCAN30RJ1
• Then you boot up the LV HUB. You will hear the LV HUB rings. Then all the groups connected shall be shown on the LED. -> looks like here, 3 groups connected:
  
• Once it is done, you connect the LV HUB to the GX device with TYPE A cable only (Type B will NOT work and will put the LV HUB in error mode). Do not forget to use RJ45 120 Ohm terminator on the BMS CAN unused of the GX device.
• You're all set.

-> I see them in Cerbo GX as shown:

This is where I am now.

My next issue is how to reduce batt charging to 95%.

And then: How to integrate stacks/groups made of other batteries in the Pylontech LV-HUB configuration

Dear Ekramer,

If it shows up on GX as "PYLON", it means your LV HUB is not updated with the latest firmware. You should therefore proceed to firmware upgrade thorugh a RS232 cable with the Batteryview software. Do you have the required hardware, cables and software ? Firmwares can be downloaded from the following link :

https://drive.google.com/drive/folders/1JHU5bpSA5AM46YNvPzKO5jSJmWIs2aWP?fbclid=IwAR2Mr-vUe-R0gp-hs4D81SZ-3Rxf92aVj7_hhy29eHI8vA0Kl941gwut-74

Contact me on contact@perma-batteries.com if you need more details, you'll need to crimp a specific cable to be able to properly communicate with the LV HUB and Batterview software.

Best regards

Dear perma-batteries thanks a lot i'll contact you via email

Thank you ekramer for the detailed description!!!

I did it exact the same way. In my config I have 4 groups of 5 Pylontech US3000C and a LV-Hub. The LV-Hub boots up and shows me the 4 groups in dual code but on the victron cerbo cx things are strange.

Why do I only see 8 Battery-modules?

Why is the available capacity bigger than the installed?

I don't think it is working correctly and I also wonder about the firmware status of the pylontech devices.

It would be great if someone can help me out.

Thank you in advance!

After using the latest Firmware for the LV-Hub my 20x US3000C are displayed correctly. The Version is 1.8 and you can get it by mailing jeff.cheaung@pylontech.com.cn

To connect the groups to the LV-Hub we used the LV-Hub manual. It's working as described but you have to take exactly those steps in chapter 3.3 and use the matching cables. Thats essential.

Also very important if searching for manuals that you look for the exact battery you have. There are mayor differences between US3000C, US3000 and so on.

The Dip-Switches on the LV-Hub can all be as in the manual. (All off / lower pos)