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Solax compatible devices

Table 1.1 - Compatible Solax inverters with Horizon Power Smart Connect Solar
 

⚠️ IMPORTANT: All systems over 30kW require FIM controller. See special installation requirements.

Please read Above 30kW PV generation and FIM controller for crucial information for the installation of these systems.

Hardware & Software Checklists 

Hardware:

CORE SGD PACKAGE

Please ensure that your SwitchDin SGD box contains the following parts before going to site:

• SGD (Droplet) unit
• Power supply (12V DC)
• 4G Antennas (2x or 4x depending on SGD version)
• SIM card (pre-installed in SGD)
• DIN-Rail mounting bracket

ACCESSORIES FOR INTERNET CONNECTION:

• CAT6 Ethernet cable
• USB-to-Ethernet adapter (SGD pre-Nov 2025 only)

ACCESSORIES FOR INVERTER-SGD CONNECTION:

If the model connection type is TCP in Table 1 above:

• CAT6 Ethernet Cable

If the model connection type is RS485 in Table 1 above:

• Any serial/twisted pair cable (RJ45) 
• RS485 to USB converter (recommended)

RECOMMENDED SPARES

1. Spare SGD unit (if possible)
2. Extra cables (of various lengths)
3. Extra SGD power supply

INSTALLER TOOLS:

• Mobile device with Stormcloud by SwitchDin app installed

Software:

Ensure you have a user account with the required permissions for the following applications: 

Solaxcloud: This platform is best accessed from a laptop and can achieve what you would on the Solax mobile app.

Stormcloud (SwitchDin): Ensure you pass the HP Installer accreditation to get installer permissions open on your user account. 

Android Stormcloud app 
iOS Stormcloud app

Physical connection

Behind the meter configuration overview

Here is the overview of the physical connections you need to establish between devices.

Mount the SGD

Depending on the SGD model, the DIN-Rail mounting bracket may be pre-fitted, or self-installation. Please refer to the following video for instructions on the self-installation of the DIN-Rail mounting bracket: https://www.youtube.com/watch?v=owM948WS1cQ
 

Connect to Home Internet

Connect Ethernet cable from a spare LAN port on the router (or any internet source) directly to the ETH2 port of the SGD. 

Important note: No other Ethernet port will be available for internet connection

For SGDs provisioned before November 2025, these may be connected to the internet by plugging the USB-Ethernet adapter with a CAT 6 cable from the home router into the USB port number 3 as shown here. (Please be aware that there is no other USB port that will accept any Internet traffic but USB port 3.

Connect to Solax inverter

There are two ways of connecting a Solax inverter to SwitchDin's SGD, depending on the model. Please look at Table 1.1 above to determine the model and which connection it supports.

1. Through RS485 connection

The SGD has a built-in RS485 port which can be used for the connection, or you can use a USB-RS485 converter (recommended).

If you are using a USB port to connect the inverter then you need to use a USB-RS485 converter.

Otherwise you can use the internal RS485 build in the SGD itself. You can use connection A or connection B.
Please contact Solax if you need to know to which pin we should connect to the inverter as every model has its own pin assignment.

 

Pick a set of wires, and connect the right pins to the RS485 to the USB converter according to the manufacturer's manual. Please contact the Inverter manufacturer company to see which pins to connect to. Let’s have a look:
 

For the Pro models (E.g. X3-PRO-10K-G2), start with picking a set of wires, and connect PIN 1 of the COM terminal plug (from the inverter) to PIN 1 (T/R-) on the RS485 to USB converter breakout board.

For Pro ones, connect RS485：Pin1&2 or Pin3&4

 

All the other inverters use Pin4&5

For Mic ones:

For Boost/Mini: connect on COM port with Pin4&5

Hybrid X3：COM port：
 

Hybrid X1: COM port:

COM Communication Connection (BSM/CAN/COM/LCD/DRM)

Connect the USB-RS485 adaptor to either USB port #1, or #2 on the SGD. 

 

2. Through TCP connection

If the inverter can be connected via TCP (as specified in Table 1) you can connect through a CAT6 Ethernet cable to ETH1 port of the SGD. 

⚠️ IMPORTANT: The inverter must be on the same network as the SGD for it to be discovered.
 

 

Connect the main 4G antenna

For the new 4-port antenna SGDs, make sure you connect the main 4G antenna to WWAN.

For older 2-port antenna SGD versions Make sure you connect the main 4G antenna to the WLAN-B connection as shown here.

 

Power up the SGD

Ensure you connect the power supply as below.

SOLAX inverter settings

COM Address

Check the Modbus address and baud rate. Ensure the baud rate is set to 19200 or 9600, and the address is 1. The inverter’s default settings are correct and do not need to be changed.

Setting Modbus

You can set the address and select the baud rate of the external communication protocol for communicating with external equipment.

Note: The password for advanced settings is 2014

Modbus can be set on the RS485 port of the inverter by accessing the COM address via the OLED display or the ShinePhone app.

• The default COM address is 1. 

• If you need to change the COM address, single touch on the OLD display or make number +1. Then double touch to confirm the setting.

Failsafe mode

Ensure that the value for export limitation is set to 0. 

The failsafe setting is a protection when communication between SGD is lost, the inverter runs at the default setting to not exceed the limitation value.

Setting Export Control

This function allows the inverter to control the output power to the grid. 

• The User Value set here must be less than the maximum value. 

• If the user does not want to feed power to the grid, set User Value to “0”

Inverter region settings

Please select “Australian C” for Horizon power area.

Advanced settings

Setting path: Menu > Settings > Advanced Settings

Setting Safety Code

Here you can set safety codes according to different countries and grid-tied standards.

• User Defined option allows for customization of relevant parameters with a wider range
• There are several standards to choose from, please refer to the LCD screen on the inverter (May be changed or added without notice)

Commissioning the SGD

Open the Stormcloud application and sign in.

• Please follow this link if you are creating your user account. You must ensure you have permissions on this account opened by SwitchDin.

• Your username is an email address. (both username and password are CASE sensitive)

• If two-factor authentication has been enforced, you will receive a passcode valid for 300 seconds in your email inbox to finish logging in to the SwitchDin portal.

 

Create a portfolio

When you first log into your StormCloud app, you'll need to create a portfolio - a folder that groups all the sites where you install SGDs (Solar Gateway Devices).

Step 1: Navigate to Portfolio Monitoring After logging in, go to the Portfolio Monitoring section. You'll see an empty portfolio list with a green "Create" button in the top right corner.

Step 2: Fill in Portfolio Details Click the "Create" button. A dialog box will appear asking you to:

• Enter a name for your portfolio (required)
• Toggle "Mute Alarms" on or off based on your preference

As an installer, we recommend using your business name, your area, or a client name to easily identify your portfolio.

Step 3: Confirm Creation Click the green "Create" button in the dialog box. Your new portfolio will now appear in the Portfolio List, ready for you to add sites and monitor your SGD installations.

Create a unit

Tap on your portfolio to create your first unit. Tap on 'Create' in the top right corner.

In the Unit Name field, please use the following naming convention:
Street address or significant place name - Town - Inverter size (kW) 

• Example: 12 Test Road - Onslow - 5kW or Broome Test School - Broome - 25kW

Enter the address: Start typing in the Address field and select from the dropdown suggestions.

Add the NMI: Enter the 11-digit National Metering Identifier. Don't have it yet? Use a placeholder like 11111111111 and update it later.

Click "Create" and you're done. Your unit is now ready for monitoring.

Add the SGD to the unit

Once you've created a unit, you need to add an SGD (Secure Gateway Device) to start monitoring.

Step 1: Open Your Unit From your portfolio, select the unit you just created. You'll see the unit overview with tabs at the bottom.

Step 2: Go to Equipment Tab Tap on the "Equipment" tab. You'll see an empty state with the message "There's nothing here yet. Add a Droplet to begin."

Step 3: Claim Your Droplet Tap the "Claim droplet" button. This will take you to the installer section where you can register your SGD.

Note: You must be an accredited installer to access the installation section and claim droplets.

Step 4: Enter Droplet ID (Serial number) In the installer section, you have two options to identify your Droplet:

Scan QR Code: Use the QR code found on the SGD box or on the device itself

Enter Manually: Type the Droplet ID, which always starts with 0001c

Can't find the ID? Look for the ETH2 MAC address label on the Droplet—that's your Droplet ID.

Step 5: Connect to Internet After entering the Droplet ID and confirming:

Power up the Droplet

Connect the eth2 port on the SGD to your router (for SGD provisioned after November 2025)or switch using an RJ45 ethernet cable

Tap "Connect Via Ethernet Or 4G" in the app

Step 6: Verify Connection ,the app will attempt to communicate with the Droplet to verify it has internet connectivity. This process may take up to 30 seconds. If the connection fails, verify that:

• The Droplet is powered on
• The ethernet cable is securely connected
• Your internet connection is working properly

Step 7: Assign to Portfolio and Unit Once the connection is verified, you'll be prompted to select the portfolio and unit where this Droplet should be assigned. Choose your existing portfolio or create a new one, then select the specific unit and tap "Next."

Success! Your Droplet has been successfully added to the unit. The next step is to add devices to the Droplet in the Equipment section to begin monitoring your solar installation data.

Update firmware

Select 'Manage Devices' and tap at the top of the screen to download the latest firmware update if available.

Manage Devices

 Now that your Droplet is added to the unit, you need to configure it to communicate with your inverters.

Step 1: Inside your unit, click on the "Equipment" tab at the bottom. You'll see your Droplet listed with its Endpoint ID and current status. Under the Droplet information, you'll see sections for "Endpoint attributes" and "Devices".

Step 2: click "Add device", if the connection is okay it will automatically show up. Then you just need to click "add".

If you have a meter normally the meter role will be a “grid meter role”

Add the Horizon Power Controller

Add a Controller After adding your devices, switch to the "Controllers" tab in the Equipment section. Click "Add Controller" and select your controller type from the dropdown menu—in this case, "Horizon Power Controller."