4x Victron 200Ah NG 25.6V batteries
Lynx Smart BMS 500 NG
4x Orion XS1400 (2x charging from the vehicle, 2x as a constant voltage source for 12V and 24V)
SmartSolar Chargers:
1x SmartSolar Charger MPPT 100/50
4x SmartSolar Charger MPPT 75/15
Quattro II 5kVA connected to shore power via AC1 IN
Smart Phoenix 5kV connected to AC2 IN of the Quattro
Ekrano GX
When the Quattro is connected to shore power via AC1, it prioritizes this, even though sufficient solar power is available. If I set AC1 to off or inverter only, the solar power output immediately jumps to 1000 to 1800 watts (2.1kW peak installed). However, as soon as AC1 is available, solar power drops to 70-100 watts and AC1 is used. It seems that only the pure DC load is covered by solar, while battery charging and AC output are covered via AC1 input.
Is there a setting somewhere to ensure solar power always has maximum priority?
Unfortunately, I haven’t been able to test this thoroughly yet, but is it also possible that the two XS1400 chargers (displayed as alternator in ekrano) , which are charged by the vehicle’s alternator, have a higher priority than solar power? Can these priorities be configured or adjusted somewhere?
I’m guessing you are using '“Prioritize other energy sources” in VE Configure to set your sustain voltage at 26.9 volts or so? You then see a little windmill/ sun icon on the cerbo display when using AC in 2 and this will prioritize solar. You can tell the system to charge to 100% anytime in the settings.
If you are using shore power in via AC in 1, I think you see a little transmission tower icon on the cerbo display and the systen will say “Charging to 100%” and I think solar is not used as a priority?
I think that AC in 1 automatically charges to 100% by default? My dealer has not been able to confirm this to me yet.
On another boat with four XS1400 alternator chargers, two masters are shown as alternator and the two slaves are shown as a negative DC load. The solar is still prioritized but only if we connect shore power to AC in 2.
You can play with the sustain voltage setting. I have read the 26.00volts is about 30% SOC. I am using 26.9volts as a conservative value.
This is the behavior I have observed as well. In a boat or a shore system, with a Quattro, if you have a generator, set it up to AC-In-1. Regardless of whether or not you have a generator, set shore power/external power to AC-In-2 (even if that means leaving AC-In-1 connected to nothing). The Quattro treats AC-in-1 as coming from a generator or another source where you want to ignore other settings and charge the batteries up to 100%. By setting up your shore/external power to AC-In-2, you can enable solar priority or other features where it will not use the AC-In-2 power over solar/wind. Note that Alternating Current loads will still be fed by the Quattro from AC-In-2 in this mode as passthru, but your DC loads will all be powered by the battery, with solar charging the batteries and the battery going down at night until you have solar again or 7 days have expired.