Hey
@Mudd216! Congratulations on getting this far. I bet you thought it would go much faster? I have yet to get an answer from SS, been waiting over 2 weeks. I assume they have no engineering department and are merely rebranding Chinese designed items and they don’t know how to answer. That said, I am still working through this. I plan to have an answer before this Thursday.
Couple of details added below for consideration I learned on commissioning, hope this helps.
1. Ensure your current sharing cables are installed on parallels units, those that feed L1 or L2. They must be hooked up correctly or your unit(s) will die a fast death. Note the manual text “inverter 1 port A to Inverter 2 port A is referring to the current sharing cables, not the RS-232 cables.
2. Install RS-232/VGA cables and Ethernet between batteries and to your master inverter per the manual.
3. With AC power In and Out turned off, apply at least 2, more is better, batteries (10 kWh) and turn on one breaker at a time to the first inverter. Configure setting 28 for 2P1 and setting 05 for EG4 (assuming you have matched batteries) and set priority mode (03?) to SBU (solar, battery, utility). Power cycle your inverter and ensure unit is reading the battery voltage. If not, set 05 to USE and back to EG4. It took mine several tries, if stubborn power on split phase pair and try again.
4. Turn on 1-2 more batteries and Power on second phase unit (breaker and power on) (inverter 3) and in setting 28, set to 2P2 180, set 05 to USE and 03 to SBU. Check voltage on battery is reading.
5. Turn on PV inputs to both unit, observe that the battery SOC light is charging.
6. Turn on 2nd parallel unit (breaker and inverter on button) and set 28 to 2P1 and 05 to USE and 03 to SBU. Check that battery shows SOC.
7. Turn on 2nd parallel unit and set 28 to 2P2 180 and 05 to USE and 03 to SBU. Ensure battery shows SOC. Turn on remaining PV and check that batteries show SOC charging.
8. Close PV switches and push the power off on any inverter, they should all go into standby mode (horizontal panel light goes out) and units power off within 30-45 seconds. Turn off
9. Power on each unit staring with master and check to ensure phase settings remained, ensure 2P2 units read 180 and not 120. Check that batteries are showing SOC. Power off all PV inputs and power down units.
10. Ensure all batteries are at the same voltages, using stand alone charger or using inverters powering one unit on at a time until SOC is 100%. This may take several days as mine took about 4 hours for each battery.
11. Power off large house loads, A/C, heater, oven and turn off main house power. Energize system starting with batteries, then PV ensure system is stable and turn on AC input breakers and the AC output breakers.