Deye Inverter Configuration (Closed Loop Without LYNK II)

The HELIOS ESS supports closed-loop communication with the Deye inverters listed in the Closed-Loop Communication with Inverters table in the HELIOS ESS Closed-Loop Communication topic.

To enable communication between the inverter and batteries:

Connect a CAT6 or higher straight cable from the HELIOS ESS COM2 port to the
CAN port of the Deye inverter-charger.

Deye CAN Connection

Configure the Inverter-Charger
1. Using the touch screen and keypad on the inverter-charger, navigate to Main
  Screen > System Setup > Battery Setting.
2. Specify the settings according to the instructions in the tables that follow to stop
  power conversion when a closed-loop communication error occurs.
3. Touch the Up and Down arrows to scroll through the screens. Touch the checkmark
  button to save changes.
Exit and restart the inverter-charger.

NOTE

If there is a break in communication between the HELIOS ESS battery and inverter-charger for more than ten seconds, the inverter-charger will safely stop operation, so long as the BMS Lithium Batt and the BMS_Err_Stop parameters are both enabled on the Deye inverter-charger. The inverter-charger will display an F58 BMS Communication Fault if communication is lost. The Deye inverter-charger will check every five minutes and resume closed-loop operation if communication is re-established.
If communication cannot be reestablished and you need to resume operation, you may have to convert the Deye inverter to an open-loop configuration manually. For instructions on configuring open loop, refer to Deye Inverter Configuration (Open Loop).

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.

Main Screen > System Setup > Battery Setting

Battery Setting - Deye Closed-loop Charge Settings

Battery Setting (page 1)
Batt Mode	Select the Lithium option to use the battery BMS.
Activate Battery	Select this check box.

Battery Setting - Deye Closed-Loop Charge Settings

Battery Setting (page 3)
Lithium Mode	Set this value to 00 (Pylon).
Shutdown	Adjust values to support the use case or keep the original values.
Low Batt
Restart

Main Screen > System Setup > Advanced Function

Advanced Function - Deye Closed-Loop Setting

Advanced Function
BMS_Err_Stop	Select this check box to cause the inverter-charger to stop operating if there is a communication error.