Sol-Ark Integration Guide

1) The Gen or Grid checkboxes need to be selected to program their corresponding V or % start triggers. The V or % start
triggers can only be programmed if in voltage or percentage based controls.
2) Large generators over 8kW in size are commonly connected to the grid input of the inverter and use the grid start trigger
3) Offgrid customers should use 51.4V or 20% as a trigger for grid/generator charging, and 51V or 15% for any secondary
backup generators. The generator will charge the batteries to around 90% full.
4) Grid-tied customers should use 51V or 15% as the trigger for grid charging and 50.5V or 10% for any secondary backup
generators. Then, use the time-of-use settings in grid parameters to maintain the battery at 20%. This will prevent nuisance
charging of the batteries from the grid.
5) It is okay to raise the grid or generator start triggers for customers wanting more conservative reserve capacities.
6) Customers with inverter communication who keep their batteries near 100% for most days of the year should enable
equalization time of 1 hour every 60 days to help maintain state-of-charge calibration.
7) Customers without battery-inverter communication should set Float to 54.4V and absorption to 55V, keeping
equalization disabled.
D. Program the Discharge tab:
Shutdown voltage turns off the battery and waits for the sun to come back up to recharge the battery .While this value can
be lowered, it is a good idea to keep it high and conservative so that the parasitic load of the inverter itself does not
discharge the battery before needing to be recharged. If the system is regularly hitting its shutdown voltage, an automatic
secondary power source such as a grid or generator charge should be added to the system design.
The low battery alarm and inverter restart power level are also user adjustable.
The battery empty voltage should not be adjusted to be lower than 48V.