First time posting but I have an issue with the voltage readings on my system.
48/3000 Multiplus 2 - Connected with 50mm2 cables
Lynx power in + Lynx Shunt + Lynx Distributor
250/85 Smart Solar Regulator - Connected with 32mm2 cables
Renogy 48v 50ah batteries x 4 - Connected with 50mm2 cables
Voltage issue I am having:
(These were all with no input from the solar panels and loads disconnected from the multiplus, let the system sit for about 10min before checking voltages)
At battery terminals - they are all at 49.2V - Tested with 2 different multi meters and got the same values.
Lynx Shunt shows 49.72v with voltage coming into the shunt of 49.2v (from the multimeter) - I was going to do the voltage configuration on the shunt until I realised the voltage of other components in my system.
Smart Solar - 49.68v
Multiplus 2 - 49.69v
Next I checked connections / torques etc everything was fine. Multiplus has the latest firmware as does my other components.
Should I be worried, I can calibrate the shunt but not Multiplus and Smart Solar?
My main reason for checking the voltages was to make sure each of the batteries were at the same voltage.
Not sure if it is the same issue, but my lynx shunt reads lower than other components.
struggled to get SOC to reset in the end I had to set the charged voltage slightly lower to get the SOC to reset.
There has been plenty of talk about this and even mention of a calibration setting for the shunt but I don;t see that and unfortunately the post does not mention the firmware version it appeared in.
The voltage calibration for the Lynx Shunt is a part of VictronConnect. Connect to the GX system in VictronConnect (either via the remote tab or via a local connection), then go the the lynx shunt battery settings and there a calibration button should be visible.
The voltage reported for the other components are not what they see on their battery connection, but what they believe the battery voltage is. This can be an adjusted value based on the received DVCC Shared voltage sense / Vsense. I assume you have everything connected to a GX system?
You can then check the voltages again after disabling DVCC on the GX. The voltages reported by the SmartSolar and the Multiplus should be closer to the value on their battery connections after a minute or so.
The Lynx Shunt Battery Voltage Calibration that has been added to VictronConnect should also help here to get the reported Lynx Shunt voltage be more accurate, and thus also for the other components when DVCC and Shared voltage sense is enabled.
You can not see the calibration setting because you are looking in Venus OS on your GX device. You need to view the Lynx Shunt in VictronConnect either local to the device or remotely via VRM. Both posts above stated to use VictronConnect.
