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.
The use of Wi-Fi repeaters or mesh networks may affect the proper functioning of the system. We recommend using a stable and direct Wi-Fi network to ensure an optimal connection between the charger and the inverter.
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.
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.
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).
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.
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
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
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
1. Go to the Configure section.
2. Go to Communication Settings.
3. Select RS485.
4. Take note of the COM address.
Check IP address
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.
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.
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
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