Sol-Ark Integration Guide

Rev 2.0 08-28-21
Fortress Power - Sol-Ark Inverter Guide
505 Keystone Rd, Southampton, PA 18966 . [phone]. [e-mail] . Fortresspower.com
6
Step 8 – Confirm BMS communication.
After completing steps 1-7, go to the home screen of the SolArk unit, touch the gear icon, and select the
new “Lithium Batt Info” option in the setup menu options screen. If data appears across the top of the
menu option as well as across line 2 only, then the battery is communicating to the SolArk. Otherwise
this option will only populate with zeroes.
Step 9 – Program Grid Parameters.
Go back to the home screen, touch the gear icon, and select “Grid Setup”. The Grid Parameters menu
will appear and the Grid Limiter Function will be the first tab. You may still need to program other tabs,
but this Grid Limiter tab plays an important role in battery behavior. The programmed levels are user
specific, so think carefully when programming this menu relative to the specific job site and grid policy.
Grid Sell – Select to sell back to the grid when
the batteries are 100% full.
Limited to Home – Select when not allowed
to backfeed the grid or when utility solar
buyback rates is horrible. Typically requires
200A SolArk CTs around the main grid feed.
Limited to Load – Select when off grid.
Time-of-use – Almost always select this
feature even when off-grid. It is useful not
only for time-of-use rate structures but to
optimize battery use conditions such as
grid/generator charging.
Charge Time of Use Column – The battery
will stop being used at the % programmed.
Checking the box will force a grid charge.
Discharge Time of Use Column – Select to for a sell back to the grid. Useful for utility battery incentive programs or
where time-of-use rate structures where the utility solar buyback rate is advantageous. Not commonly used, as the
battery will sell back to the grid if the grid sell column is checked.
Batt % Column – If more solar power is available than load, solar will always charge the battery to 100% before
selling back to the grid, unless the Sell column is checked. Alternately, if the battery falls below this % and grid
power is available, the battery will switch over to grid power. Useful for keeping the battery at 20% without
triggering a full grid recharge.
Header data appears here 56V 185A etc….
1: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2: Battery Data appears here when successful
3: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
4: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
……..
16. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Lithium Batt Info
Suggested Grid-Tie Parameters
9000
3:00AM
M
5:00AM
M
9:00AM
3:00PM
7:00PM
M
9:00PM
3kW
3kW
9kW
3kW
6kW
3kW
30%
20%
100%
100%
60%
45%
✓