Deye Inverter Configuration (Open Loop)

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.

Batt Mode

Select the Use Batt V option to use battery voltage for all the settings.

Activate Battery

Select this check box.

Batt Capacity

Set to the number of Discover Lithium batteries x Ah capacity of each. For example, set to 628 Ah (2 x 314 Ah) for two HELIOS ESS 52-48-16000 batteries.

Max A Charge

For a single inverter, set to the lesser value between the inverter’s maximum charge rate or the quantity of attached batteries multiplied by the battery’s maximum charge rating.

For example:

Single phase system with SUN-6K-SG01LP1-US inverter and two HELIOS ESS 52-48-16000 batteries

• Set the SUN-6K-SG01LP1-US inverter to the lesser of the inverter’s maximum charge rate of 135 A, or 380 A for two HELIOS ESS 52-48-16000 batteries that are each rated at a maximum charge rating of 200 A.
  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.

Three-phase system with three SUN-6K-SG04LP3 inverters and two HELIOS ESS 52-48-16000 batteries.

• For a three-phase system, set to the lesser value between the master inverter’s maximum charge rate or the quantity of attached batteries multiplied by the battery's maximum charge rating divided by the number of inverters. For example, set the SUN-6K-SG04LP3 inverter to the lesser of the inverter’s maximum charge rate of 150 A, or 133 A for two HELIOS ESS 52-48-16000 batteries that are each rated at a maximum charge rate of 200 A, and then divided by three inverters (2 x 200 A ÷ 3 = 133.33 A).

Max A Discharge

For a single inverter, set to the lesser value between the inverter’s maximum discharge rate or the quantity of attached batteries multiplied by the battery’s maximum discharge rating. For example, set the SUN-6K-SG01LP1-US inverter to the lesser of the inverter’s maximum discharge rate of 135 A, or 380 A for two HELIOS ESS 52-48-16000 batteries that are each rated at a maximum discharge rating of 200 A.

• 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.

For a three-phase system, set to the lesser value between the master inverter’s maximum discharge rate or the quantity of attached batteries multiplied by the battery’s maximum discharge rating divided by the number of inverters. For example, set the SUN-6K-SG04LP3 inverter to the lesser of the inverter’s maximum discharge rate of 150 A, or 133 A for two HELIOS ESS 52-48-16000 batteries that are each rated at a maximum discharge rate of 200 A and then divided by 3 inverters (2 x 200 A ÷ 3 = 133.33 A).

Float V

53.6 V

Absorption V

55.2 V

Equalization V

Do not equalize Discover Lithium batteries

Equalization Days

Equalization Hours

Shutdown (%)

Turns off the inverter when the battery reaches the specified SOC.

Low Batt (%)

Inverter outputs a warning when the battery reaches the specified SOC.

Restart (%)

Inverter AC output continues when the battery reaches the specified SOC.

TEMPCO (mv/C/Cell)

Set to 0 mv/C/Cell. ⁽¹⁾

Batt Resistance

Keep the default value of 25 mOhms.

For more information about configuring the Deye inverter-charger, refer to product documentation on the Deye website (www.deyeinverter.com) or the LYNK II Deye User Manual (805-0084).