Hello,
I have 3 identical standalone systems installed in the last 2 weeks that are not calculating the SOC correctly.
(NOTE. This has never been a problem with dozens of other installs over the last several years & I suspect a recent firmware update issue but please tell me I'm wrong).
As you will see in the VRM data below, the SOC is gradually reducing each day, however the MPPT is clearly reaching float.
In the past we would slightly reduce the VEconfig absorption voltage & Float Voltage to below the MPPT charge settings (& below what was being reported in VRM for the VEBUS DC Voltage). The Multi would then "Force" SOC to value set in VEConfig resulting in regular syncing and doing a very good job.
Equipment & Firmware:
Multiplus 2 48V 5kVa - firmware 467
MPPT 150/100 Smart Solar - firmware 1.47
CCGX - firmware 2.42
No BMV Battery Montitor
No External DC Loads
No AC Coupled PV Inverters
Lead Acid Batteries
CCGX Settings:
System has Multiplus 2 set as battery montior
Note. The option "improve VEBUS SOC with Solar" is no longer visable as of a recent CCGX update
DVCC turned off
VE Config Settings:
General Tab
-Battery Monitor Enabled
-SOC when Bulk finished - 95%
-Charge efficiency - 0.85
Charger Tab
- Absorption Voltage - set slightly below MPPT voltage & voltage reported in VRM for VEBUS DC Voltage
-Float Voltage - set slightly below MPPT voltage & voltage reported in VRM for VEBUS DC Voltage
Note. I have adjusted all of the VEconfig settings several times trying to get the system to work with no success.
VRM Data:
