Luxpower Inverter Configuration (Open Loop)

If closed-loop communication cannot be established and you need to resume operation, you may have to manually convert the Luxpower inverter to an open-loop configuration. Refer to the latest Discover Energy Systems documentation for battery values and the latest Luxpower documentation for menu navigation and details on the setup procedure.

NOTE
Depending on your system and particular use case, there may be other settings that require configuration. Refer to the inverter manual for information on these settings.

Set the Discover Lithium batteries to ON and set the inverter to ON.
Using the inverter touch screen interface, touch the Gear icon to set the properties as indicated in the following tables.
Touch the Up and Down buttons to scroll through screens.
Touch the Set button to save changes on a screen.

> Advanced

Advanced - Luxpower Screen 2

Advanced (Screen 2)
Battery Type	Select 1: Lead-acid when operating the inverter and Lithium batteries in an open-loop configuration.
Lead capacity	314 A × number of batteries

> Charge

Charge- Luxpower Screen 1

Charge (Screen 1)

Operating Mode

Select the Use Bat V check box when operating the inverter in an open-loop charge configuration.

Bat charge current limit (A)

200 A x number of batteries

NOTE: Each HELIOS ESS battery is rated at a 200 A charge rate, but when connected in parallel, the maximum current is limited by internal busbars. For the recommended maximum current for paralleled HELIOS ESS, refer to the table in the Minimum Specifications for Battery Systems topic.

Charge- Luxpower Screen 2

Charge (Screen 2)
Absorb voltage (V)	55.2
Float voltage (V)	53.6
Start derate Volt (V)	48

> Discharge

Discharge- Luxpower Screen 1

Discharge (Screen 1)
Operating Mode	Select the Use Bat check box when operating the inverter in an open-loop configuration.
Discharge current limit (A)	200 A x number of batteries NOTE: Each HELIOS ESS battery is rated at a 200 A discharge rate, but when connected in parallel, the maximum current is limited by internal busbars. For the recommended maximum current for paralleled HELIOS ESS, refer to the table in the Minimum Specifications for Battery Systems topic.
On-grid cut-off (V)	Set to voltage greater than the Start derate Volt. The recommended value for the cut-off is 48.5 V or more.
Off-grid cut-off (V)

NOTE
For more information about configuring the Luxpower inverter-charger, refer to product documentation on their website (luxpowertek.com) or the LYNK II Installation and User Manual (805-0033).