BenFromSignatureSolar
Solar Addict
What issues are you having?
Closed Loop Comms between Sol-Ark 15k and EG4 LL batteries
- Thread starter BenFromSignatureSolar
- Start date
I have EG-4LL V2s with 6-position DIP switches.
While just "bench testing" the batteries with BMS. Following the manual directions that indicate battery #1 is set to ID1, this results in "garbage" communication with BMS, meaning it's communicating, but protocol is not correct.
If I set battery #1 to ID2 (subsequent batteries to +1), BMS works fine via the RS485 port. Just for a single battery. None of the other batteries show up without connecting directly to their RS485 ports. This makes me think that closed loop communications with an inverter will be a problem and I see many people posting here to set the inverter(s) to USE mode to work around.
Question:
Are subsequent battery communications (supplied 1 ft green wire) connected from battery port (bat 1) to com port (bat 2), bat 2 battery port to battery 3 com port, etc? Should these show in BMS without connecting directly?
I'd love to see a setup video on the EG-4 inverter(s) and several EG-4LL V2 batteries.
Last edited:
BenFromSignatureSolar
Solar Addict
Try it here, it's pulling up on my phone and computer
Lips2000
New Member
BenFromSignatureSolar
Solar Addict
You can find the latest version of all firmware at eg4electronics.com
BenFromSignatureSolar
Solar Addict
Send me your info and I'll get someone in touch to help you out. (Name and email address)
linuxdrake
Solar Beginner - Electrician / Hardware Engineer
@BenFromSignatureSolar Quick question here on topic, I got Closed Loop to work now with my 12x EG4-LL v2's but not sure if the settings for the Float V, Absorb V, Equalize V and Batt Empty V are correct. They are all 56V, do you have correct values to use?
If you're running closed loop, isn't that stuff handled for you? User would mean those values are used.. (please correct me)
linuxdrake
Solar Beginner - Electrician / Hardware Engineer
That's where I am not sure myself. I would of expected it, The EG4-LL manual states:
1. Bulk/Absorption: 56.2V (+/- .2V)
2. Float: 54V (+/- .2V)
3. Low DC cutoff: 47-44V*
But they are 56Float, 56Absorb, 56 Equal in the unit. Should we not disable equalization as well? As that is for Lead Acid to break up sulfur on the plates etc, and not useful on Lithium?
I am also curious as I plan to integrate a Solar Assistant, and if so closed loop will be lost. As you have to change the "Master" battery to ID2 to allow Solar Assistant to work.
As I understand it, typical standard closed loop comm automatically reports this info to the inverter as well as temperature, state of charge, error codes, etc..Basically its the same info that you see when you hook up with BMS Test. Very basic RS232 serial port communications like we had before the internet. It isn't rocket science.
It's a little disconcerting with the EG-4LL V2s as the BMS test cannot currently see more than one battery at once without direct connection to each battery.
Lips2000
New Member
After much hair pulling and a replaced LL V2 battery (bad logic board), I have *finally* gotten closed loop working well with my Sol-Ark 15k.
I currently have a single LL V2 "mastered" to the SA 15K and 5 LifePower4 batteries connected in series to the LL V2 using the BATT/COMMS ports.
The most frustrating part is the manual is wrong on how to select protocol on the LL V2. It says to put it in ID 16 and press and hold the ENTER button for 5 secs. That is wrong.
Place all DIP switches (the newer V2 have 6 DIPs) to the right (away from their number), recycle power on BMS and then press and hold RETURN (!) for 5 seconds. Select the Sol-Ark protocol, place DIPs back to ID1 (LRRRRR from the top down), plug in BATT COMMs to 2nd batt, recycle BMS power and plug in Sol-Ark to CAN COMM port of the first battery.
Seeing what I expected and all good.
I do not fault Signature Solar but I will fault EG4. Terrible manual.
Happy to help if you have questions.
Mark
I currently have a single LL V2 "mastered" to the SA 15K and 5 LifePower4 batteries connected in series to the LL V2 using the BATT/COMMS ports.
The most frustrating part is the manual is wrong on how to select protocol on the LL V2. It says to put it in ID 16 and press and hold the ENTER button for 5 secs. That is wrong.
Place all DIP switches (the newer V2 have 6 DIPs) to the right (away from their number), recycle power on BMS and then press and hold RETURN (!) for 5 seconds. Select the Sol-Ark protocol, place DIPs back to ID1 (LRRRRR from the top down), plug in BATT COMMs to 2nd batt, recycle BMS power and plug in Sol-Ark to CAN COMM port of the first battery.
Seeing what I expected and all good.
I do not fault Signature Solar but I will fault EG4. Terrible manual.
Happy to help if you have questions.
Mark
what battery setting did you choose on sol ark 15K battery setting page. did you choose BMS lithium mode? and if so, what is the number you entered?
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Bfreeskier
New Member
- Joined
- May 12, 2021
- Messages
- 3
Im not sure if it's apples to apples, but I got was able to get closed-loop coms going after I placed "0" in my BMS Lithium mode. I'm using a Sol-ark 12k with 5 EG4-LL V1 batteries with the firmware reflash.
Lips2000
New Member
I used Lithium Battery and used a '0' in the BMS Lithium Battery mode.
Jax_Solar
New Member
have you looked at your system settings in powerview (mysol-ark)? When I do this, the setting shows up as blank, and other settings are incorrect. So we're running open loop right now on guidance from Sol-Ark.
houseofancients
Solar Wizard
What happens if you go to equipment > inverter> battery tab ?
Jax_Solar
New Member
I don't remember, to be honest. But I tested it out the other day and Sol-Ark said to change it back because it didn't work.
We're running in open loop communication with the settings I've attached.
Attachments
Curious, What is your max charge you are seeing going into your batteries in open loop? when I first set up my system in open loop I couldn't get the EG4 LL v2's to take more than 18amps per battery no matter how I set the inverter. as soon as I set up closed loop, I could get the full rate. (currently 170/5 even though the manual says I should only be able to charge @160 with only using 1 DC breaker)
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