knexbuilder
New Member
- Joined
- Jul 1, 2022
- Messages
- 60
I have been testing the limits of my off grid solar system and have a question for the community/Signature solar on battery communication and charge settings.
A LITTLE BACKGROUND (not necessary reading):
My system consists of two EG4 inverters (6500ex-48) and two banks of EG4 Lifepower4 48V batteries. Originally when I started up my system in late October I used the BMS/Inverter communication cable. All worked well for a time (3-4 weeks) except for the intermittent error 61 code which I devoutly ignored while I attended to more important matters. One day the system just shutdown without any obvious reason. Attempts to restart would only run for 3 minutes or so and shut dwn again. As best as I could diagnose batteries or the inverter were reading low battery and shutting everything down (battery was >50% SOC). Again, I didn't have the time to resolve it and switched to user defined settings as recommended in the EG4 manual (see image). I used this settings without issue for a couple of months.
MY QUESTION (the point of the post):
Now that I have a little more time on my hands I have returned to pondering my BMS/Inverter communication issue. I upgraded the firmware on the inverters and all problems have gone away and things are running smoothly. My question now is, how do the EG4 BMS charge settings differ from the user defined settings recommended in the manual? With the inverters set to use the EG4/BMS communication, settings 26 and 27 in the inverter menu show a bulk/float charge of 58V. This doesn't seem right to me when comparing to the user manual user defined settings. @BenFromSignatureSolar
The second image below is pulled from solar assistant which reports all the battery charge settings at the bottom. These match what is shown on the actual inverter displays themselves.
Thank you all for your help and comments. Happy new year everyone!
A LITTLE BACKGROUND (not necessary reading):
My system consists of two EG4 inverters (6500ex-48) and two banks of EG4 Lifepower4 48V batteries. Originally when I started up my system in late October I used the BMS/Inverter communication cable. All worked well for a time (3-4 weeks) except for the intermittent error 61 code which I devoutly ignored while I attended to more important matters. One day the system just shutdown without any obvious reason. Attempts to restart would only run for 3 minutes or so and shut dwn again. As best as I could diagnose batteries or the inverter were reading low battery and shutting everything down (battery was >50% SOC). Again, I didn't have the time to resolve it and switched to user defined settings as recommended in the EG4 manual (see image). I used this settings without issue for a couple of months.
MY QUESTION (the point of the post):
Now that I have a little more time on my hands I have returned to pondering my BMS/Inverter communication issue. I upgraded the firmware on the inverters and all problems have gone away and things are running smoothly. My question now is, how do the EG4 BMS charge settings differ from the user defined settings recommended in the manual? With the inverters set to use the EG4/BMS communication, settings 26 and 27 in the inverter menu show a bulk/float charge of 58V. This doesn't seem right to me when comparing to the user manual user defined settings. @BenFromSignatureSolar
The second image below is pulled from solar assistant which reports all the battery charge settings at the bottom. These match what is shown on the actual inverter displays themselves.
Thank you all for your help and comments. Happy new year everyone!