Megarevo Inverter Configuration (Open Loop)

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

Refer to the latest Discover Energy Systems documentation for battery values and the latest Megarevo documentation for menu navigation and details on the setup procedure.

Set the Discover Lithium batteries to ON and set the inverter to ON.
The inverter power button is located on the front of the inverter. The inverter touchscreen can turn ON even when the inverter is OFF.
Using the inverter touchscreen interface, in the top-left corner of the Control Panel, touch the Gear icon to enter the Settings menu.
When requested by the Settings screen, enter the password. The default is 11111.
Configure the battery parameters as shown below.

NOTE
If using multiple inverters, configure inverters to operate in parallel before setting the battery operation parameters. 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.

> Battery

Battery Screen 1

Use the icons at the top of the screen to navigate the Setting menus. After configuration changes, click the orange arrow icon to apply them.

Battery Type and Communications	HELIOS ESS 52-48-16000
Batt Type	Select Lead Acid / Cust.
Bat Com Type	N/A
Charge Current	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 HELIOS Manual, Minimum Specifications for Battery Systems.
Dischg power limit	Set the maximum inverter discharge as a percentage of its max continuous power output.
Dischg power limit	75%
Battery awaken	N/A
CAN ID	N/A

Battery Screen 2

Set the following battery parameters according to your application requirements.

Battery Setting	HELIOS ESS 52-48-16000
Float Charge Volt	53.6 V
Absorption Volt	55.2 V
Batt Cutoff Volt	48.0 V (BMS cutoff is 43.2 V)
Over Voltage	57.4 V (BMS cutoff is 58.08 V)
Battery Cap AH	314 Ah
Bat Grid DOD	When the battery’s depth of discharge exceeds the set value, the inverter triggers a battery low-voltage alarm. You can differentiate DOD behavior between when the battery is connected to the grid and when the battery is off-grid.
Offgrid DOD
Grid Eco Hyst	After a low-voltage alarm is generated, it is cleared once the battery is recharged to the specified level. You can differentiate the alarm reset level between when the battery is connected to the grid and when the battery is off-grid.
Offgrid Eco Hyst

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