linuxdrake
Solar Beginner - Electrician / Hardware Engineer
Hi All,
Got another interesting problem, I have 12x EG4-LL with 4 DIP's, and 12 more with 6 DIP.
According to Signature Solar, have been communicating with them, and even they are stumped at the moment. The 1st Master Batt, 6DIP with ID1, is first, followed by the 12 (4dip) batterys with ID 2 - 13, then 14-24 is the 6DIP batteries.
All 24 batts using the latest firmware from 02/24/2023. All Batts are about the same % charge and voltage, within 1-2 tenths of a volt, and charging all about 4-5A right now.
But the Sol-Ark Inverter is not seeing past 1600AH, or 16 batts.
I powered all the batts off, then starting with 24, then 23 and so on, powered them back up with master last, Sol-Ark only sees 1 batt, or 100AH on the Batt Conf, with BMS lithium on 00.
Next I tried, powering all the batts off, then Batt1, Sol-Ark sees that 100AH, then powered up batt2, Sol-Ark sees 200AH or both batts, and repeated the process to batt 16, no issues, see all 16 or 1600AH over CAN from the Sol-Ark inverter.
But when I power up batt 17, issues start, Sol-Ark reads 800AH or sometimes 100AH. Very odd.
Looking at the batts Batt-Com ports, Batt1, has both Rj45 ports lights blinking very rapidly, as expected for the master batt.
All other batts up to 16, all slow flash, like they are being poll'ed which I assume expected for CAN bus.
But whats intresting is batt 17, has the same very fast port light blinking exactly like Batt1, could be an issue with firmware? not sure.
Batt 18-24, all have the slow flash, like batts 2-15, which I expected. Very odd.....
Plugging in the RS485 USB to RJ45 cable, I confirmed batt ID's were correct from 2-16, as Batt1(master) gives junk info, as its in the host state, expected.
But also batt 17 is like that too. Batt 18 shows in the BMS_Tools app as ID2, 19 as 3 and so on. I assume as the tool is built for up to 16 and is just rolling over.
Any thoughts folks? I have contacted SignatureSolar and they are not sure, I am sending them over pictures, but wanted to ask the community here if anyone has done over 16 batts and ran into the same.
NOTE: All batts are connected to a common set of bus bars, all with equal length Pos and Neg 4/0 cables, then equal length 4/0 to both Sol-Arks, double runs to use both batt terminals for maximum discharge and charge current.
Both Sol-Ark 15's are paralleled, common AC bus, common Load bus and common GEN inputs in the wireways.
System has been working without issue with 12 batts for over 2.5MWh's or 3 months, just added the 2 extra cabinets.
Got another interesting problem, I have 12x EG4-LL with 4 DIP's, and 12 more with 6 DIP.
According to Signature Solar, have been communicating with them, and even they are stumped at the moment. The 1st Master Batt, 6DIP with ID1, is first, followed by the 12 (4dip) batterys with ID 2 - 13, then 14-24 is the 6DIP batteries.
All 24 batts using the latest firmware from 02/24/2023. All Batts are about the same % charge and voltage, within 1-2 tenths of a volt, and charging all about 4-5A right now.
But the Sol-Ark Inverter is not seeing past 1600AH, or 16 batts.
I powered all the batts off, then starting with 24, then 23 and so on, powered them back up with master last, Sol-Ark only sees 1 batt, or 100AH on the Batt Conf, with BMS lithium on 00.
Next I tried, powering all the batts off, then Batt1, Sol-Ark sees that 100AH, then powered up batt2, Sol-Ark sees 200AH or both batts, and repeated the process to batt 16, no issues, see all 16 or 1600AH over CAN from the Sol-Ark inverter.
But when I power up batt 17, issues start, Sol-Ark reads 800AH or sometimes 100AH. Very odd.
Looking at the batts Batt-Com ports, Batt1, has both Rj45 ports lights blinking very rapidly, as expected for the master batt.
All other batts up to 16, all slow flash, like they are being poll'ed which I assume expected for CAN bus.
But whats intresting is batt 17, has the same very fast port light blinking exactly like Batt1, could be an issue with firmware? not sure.
Batt 18-24, all have the slow flash, like batts 2-15, which I expected. Very odd.....
Plugging in the RS485 USB to RJ45 cable, I confirmed batt ID's were correct from 2-16, as Batt1(master) gives junk info, as its in the host state, expected.
But also batt 17 is like that too. Batt 18 shows in the BMS_Tools app as ID2, 19 as 3 and so on. I assume as the tool is built for up to 16 and is just rolling over.
Any thoughts folks? I have contacted SignatureSolar and they are not sure, I am sending them over pictures, but wanted to ask the community here if anyone has done over 16 batts and ran into the same.
NOTE: All batts are connected to a common set of bus bars, all with equal length Pos and Neg 4/0 cables, then equal length 4/0 to both Sol-Arks, double runs to use both batt terminals for maximum discharge and charge current.
Both Sol-Ark 15's are paralleled, common AC bus, common Load bus and common GEN inputs in the wireways.
System has been working without issue with 12 batts for over 2.5MWh's or 3 months, just added the 2 extra cabinets.