Model	Size (kW)	No Phases	Equipment Category	Connection type
SB3.0-1AV-41 (AS4777-2 2020)	3	1	Grid Connect PV Inverter	TCP only
SB4.0-1AV-41 (AS4777-2 2020)	4	1	Grid Connect PV Inverter	TCP only
SB5.0-1AV-41 (AS4777-2 2020)	5	1	Grid Connect PV Inverter	TCP only
SB6.0-1AV-41 (AS4777-2 2020)	6	1	Grid Connect PV Inverter	TCP only
SBSE3.6-50	3.6	1	Multiple Mode Inverter - PV and Battery	TCP only
SBSE4.0-50	4	1	Multiple Mode Inverter - PV and Battery	TCP only
SBSE5.0-50	5	1	Multiple Mode Inverter - PV and Battery	TCP only
SBSE6.0-50	6	1	Multiple Mode Inverter - PV and Battery	TCP only
STP3.0-3AV-40 (AS4777-2 2020)	3	3	Grid Connect PV Inverter	TCP only
STP4.0-3AV-40 (AS4777-2 2020)	4	3	Grid Connect PV Inverter	TCP only
STP5.0-3AV-40 (AS4777-2 2020)	5	3	Grid Connect PV Inverter	TCP only
STP6.0-3AV-40 (AS4777-2 2020)	6	3	Grid Connect PV Inverter	TCP only
STP 50-41 (AS4777-2 2020)	50	3	Grid Connect PV Inverter	TCP only
STP8.0-3AV-40 (AS4777-2 2020)	8	3	Grid Connect PV Inverter	TCP only
STP10.0-3AV-40 (AS4777-2 2020)	10	3	Grid Connect PV Inverter	TCP only

⚠️ 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:

All SMA models are connected to the SGD through TCP, as shown in the Table 1 above:

• CAT6 Ethernet Cable

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: 

SMA APP/Web

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 SMA inverter

The SGD and SMA inverter talk to each other over the network. As a result, both devices must be connected to the same network. Additionally, ensure that the port 502 is open on the inverter to enable Modbus TCP communication between the devices.

Connect a Cat 6 cable between ETH1 port of the SGD and the SMA ETH port.

NOTE: Only use a hard-wired LAN (Ethernet) connection on the inverter. 

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.

SMA inverter settings

Please call the inverter manufacturer for more information about their app 

Enable Modbus TCP and port 502

1. Establish a connection to the user interface.

2. Log into the user interface as an Installer.

3. Select the Device Parameters tab.

4. Select [Edit parameters].

5. Select the Parameter group External Communication

6. Select Modbus>TCP Server.

7. In the drop-down list Activated, select the entry Yes.

8. If necessary, change the port in the field Port. (required setting: 502)

9. Select [Save all]. 

Failsafe mode

Ensure that the default 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.

Inverter region setting

Ensure that you set the country to Australia and the region to C for Horizon Power.

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."