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Integration of the Huawei inverter with Trydan

Huawei inverters are industry leaders in the solar sector, providing efficient and reliable solutions for photovoltaic energy conversion. They are renowned for their quality, connectivity, and compatibility with various brands.

To configure Trydan with a Huawei inverter, the first step is to check whether the inverter model supports a direct and wireless connection with the e-Charger or, alternatively, requires the installation of a current clamp. It’s important to note that, since this inverter is designed to work with batteries, the best way to connect is directly to the inverter.


Tabla de contenidos
  1. Electrical installation
  2. Huawei inverter configuration
  3. Connection to the inverter
  4. Huawei inverter configuration in the V2C Cloud app
  5. Did I complete the integration correctly?
  6. Need technical support?

Electrical installation

Once you’ve confirmed that your Huawei inverter is on the supported list, make sure it has been properly installed and configured. Then, you’ll need to measure the household consumption. To do this, connect one of the power meters compatible with Huawei to the inverter. In this manual, we’ll use the DDSU666-H meter as an example.

Power Meter Installation (DDSU666-H)

The power meter is responsible for calculating household consumption and sending this data to the inverter via RS485. To establish this communication, the following connections must be made:

1. 485B1

Differential signal – of RS485
Single SUN2000: –
Cascaded SUN2000: Connects to the SUN2000 units

2. 485A1

RS485A, differential signal + of RS485
Un único SUN2000: –
SUN2000 en cascada: –

3. 485B2

RS485B, differential signal – of RS485
Single SUN2000: Used for connecting to the RS485 signal ports of the battery and the power meter
Cascaded SUN2000: Used for connecting to the RS485 signal ports of the battery and the power meter

4. 485A2

RS485A, differential signal + of RS485
Single SUN2000: When both the battery and the power meter are configured, they must be crimped to ports 485B2 and 485A2
Cascaded SUN2000: When both the battery and the power meter are configured, they must be crimped to ports 485B2 and 485A2

To power the meter, connect the phase to terminal 3 and the neutral to terminal 4. Then, establish RS485 communication by connecting terminal 24 (A+) and 25 (B-) on the meter to pins 3 and 4 on the Huawei inverter’s communication port, respectively. The clamp must be connected following the diagram below:

Huawei inverter configuration

Download the FusionSolar app

Once the installation is complete, you can configure the Huawei inverter communication using the WiFi signal it generates. This configuration can be done from a smartphone, so we’ll use the mobile app setup as an example. Download the FusionSolar app and install it on your mobile device.

* After installation, when launching the app for the first time, accept the privacy policy and all required permissions.

Direct download of the app

Physical connection of the device to the inverter

You’ll need the SDongleA device.
This is an additional device that acts as a WiFi adapter for the inverter.*

To establish communication with Trydan, the sDongle must be connected to the inverter’s USB port as shown in the images.

Once connected, the sDongle will start its boot protocol and the LED will begin flashing red. Once completed, the LED will flash green and a WiFi access point will be generated for 3 minutes.

* If the user has an older inverter model (prior to updates), the device might not be necessary.

Check the SDongle version

Make sure the device version is higher than V100R001C00SPC127, or preferably the latest version.

1. Log into the FusionSolar web portal.
2. Go to the Home page and select the plant (installation) you want to check.
3. Next, select Device Management.
4. Check the SDongle software version. If the version is not higher than the one mentioned above or isn’t the latest, you must update it (next step).

STEP 1
STEP 2
STEP 3
STEP 4

Update the version

1. Go to the Plants section and then to Update Management.
2. Next, click the Add button.
3. Then, fill in the required details and select the device you want to update. In the Target Version field, select the latest version, and in the With Authorization field, tick the Yes checkbox.
4. Then click OK, and finally confirm the update task.

STEP 1
STEP 2
STEP 3
STEP 4

Connection to the inverter

After updating the SDongle, you must connect to the Huawei inverter. Next, you need to enable the Modbus TCP/IP communication protocol, check and write down the communication address (COM), and check and write down the IP address assigned to the inverter.

Connecting to the inverter

STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

To establish a connection with the inverter:
1. Go to the Services section.
2. Select Device Commissioning.
3. Select ‘Connect to another WLAN’ to establish the connection with the inverter’s network.
4. Select SUN2000 and enter the password ‘Changeme’.
5. Return to the FusionSolar app, connect to the SUN2000 network, and enter the default password, which is ‘00000a’.

Modbus TCP/IP communication protocol

STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6

1. Go to ‘Configure’ section.
2. Go to Communication Settings.
3. Select Dongle Parameter Settings.
4. Then Modbus TCP.
5. Next, under Connection, click Enable without restrictions.
6. Finally, select OK.

Take note of the COM address

STEP 1
STEP 2
STEP 3
STEP 4

1. Go to the Configure section.
2. Go to Communication Settings.
3. Select RS485.
4. Take note of the COM address.

Check IP address

STEP 1
STEP 2
STEP 3
STEP 4

1. Go to Configure.
2. Go to Communication Settings.
3. Select Router Connection Settings.
4. Click the arrows to expand the menu, and write down the IP address*.

Enter the WiFi network password and press the Connect button.

* If you want to assign a static IP, you must uncheck the DHCP option.

Huawei inverter configuration in the V2C Cloud app

Open the V2C Cloud app and access your e-Charger to correctly configure dynamic power control.

Go to the charger’s settings section and choose Dynamic Power Control.

Under Device Type, select Inverter, and under Inverter Type, choose Huawei. If you assigned a static IP in the Huawei app, make sure to enter that same IP.

Then, select the COM address you noted earlier and choose the installation type.

Don’t forget to save the changes to ensure the modifications are applied and that dynamic power control functions properly.

STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

Did I complete the integration correctly?

When Trydan finishes booting, it connects to Huawei and can begin receiving the necessary measurements to perform dynamic power control according to the charging profile you have configured.

On the Trydan screen, you will be able to see the measurements received. You should check that the values shown on the display match those in the FusionSolar app.

If Trydan is unable to connect to Huawei, it will display the message shown in the image. It’s possible that a step was not executed correctly.

Possible causes of the communication error include:

  • The SDongle version is not up to date
  • The IP address assigned to the inverter is incorrect
  • The inverter and the charger are not connected to the same network

Need technical support?

Submit a request through the Technical Support Center and we will contact you as soon as possible to provide the best solution.

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