Huawei Sun2000

The Huawei SUN2000-KTL-L1 inverters can be connected to the FlexiObox by ethernet (Modbus TCP)

The connection is made using the local area network, no additional wiring is needed.

This type of connection is only possible when a Huawei WLAN-FE Smart Dongle is connected to the inverter, and the inverter built in wifi antenna is unplugged.

1. Modbus TCP setup

Modbus TCP has to be enabled on the inverter. This can be done true the Huawei FusionSolar app (remote) or via the Huawei SUN2000 App (local).

1.1 Enable Modbus TCP via FusionSolar app

1. Login on FusionSolar portal with your Installer account

2. Access the target plant. Click on Device Management->Check the box of the SmartDongle->Click on Set Parameters. The Firmware of the SmartDongle need to be V100R001C00SPC127 or newer. 

3. Click on Modbus-TCP tab and the connection need to be Enable (unrestricted).

4. Click on Set button.

1.2 Enable Modbus TCP via Sun2000 App

1. Open/download the Huawei SUN2000 app

   Download the app

2. Connect the SUN2000 APP to the inverter Wi-Fi hotspot

   Select manual connection and follow the steps, use the default password “Changeme” for the first login

   Attention

   Turn off the phone mobile data or else the inverter will not be found by the app.

3. Log in to the inverter

   Select installer, and enter the correct password, which defaults to “00000a”

   Attention

   If the password is not the default one, you can reset it by following the Manufactor guide. Be sure to get the owner authorization prior to do it.

Manufactor guide for password reset

4. Enable Modbus

   On the home page, select:

   Settings >> Communication configuration >> Dongle parameter settings >> Modbus-TCP >> Enable (unrestricted)

5. The inverter will be detected in the next 5 minutes by the FlexiObox, if that’s not the case, check if the inverter and dongle firmware versions are at the minimum required

2. Huawei firmware versions

Ensure that the firmware versions for inverter and dongle are at least the following:

Checking and updating the firmware versions can be doen true the FusionSolar app (WebUI remotly or Mobile app locally) and the Huawei SUN2000 App (local).

2.1 Firmware version via FusionSolar App

2.1.1 FusionSolar App Web UI

1. Log in to the management system, click Settings in the upper-right corner to go to the System Settings page, and choose Upgrade Management. On the Device Upgrade tab page, click Create Update Task, and create an upgrade task.

2. Set Upgrade, Device type, Target version, and Device selection, and click OK to upgrade the devices.

   

2.1.2 FusionSolar Mobile App

1. Run the FusionSolar app and go to the Device commissioning screen. (Perform this step only for the FusionSolar app.)

2. Connect the Smart Dongle.

3. Upgrade a device

   

2.2 Firmware version via SUN2000 App

• Check the inverter firmware version

  Connect the SUN2000 app to the inverter Wi-Fi hotspot and in the home page select:

  Maintenance >> Upgrade device >> Current version

  If a firmware upgrade is necessary, connect the inverter to the internet, and then, on the same screen, pick the package that appears on the list.

• Check the dongle firmware Version

  Connect the SUN2000 app to the dongle Wi-Fi hotspot, enabled on the first 3 minutes after power on (same steps has connecting to the inverter but choose dongle instead), and on the home page select:

  Maintenance >> Upgrade device >> Current version

  If needed you can upgrade the dongle firmware by selecting:

  Upgrade >> Manually

  If a firmware update is necessary, download the most recent dongle firmware to your smartphone and then pick the file from your smartphone filesystem and follow the app steps.