Service Tip: Activating and Deactivating the WLAN interface on Sunny Boy Inverters with Built-in WiFi

From Shahla Flynn (guest post) on August 25, 2016 in Category Service with 4 Comments
wifi-SMA-Solar-inverter

New generation Sunny Boy inverters provide customers with great flexibility due to their integrated WLAN and Webconnect interfaces. This allows direct access to the user interface of the inverter for smooth commissioning and configuration. It also provides an option for local monitoring via the inverter’s user interface or online monitoring via Sunny Portal and Sunny Places. However in some instances a customer or installer may prefer to turn off the WLAN function in the inverter (e.g. privacy, not used, etc.). The step by step procedure to switch off and switch on the WLAN in the inverter is described below.

 

PREPARATION CHECKLIST:

Bring your smartphone, tablet or laptop with Ethernet patch cable along to the site

wifi1Whether the installation site is remote, or if this is the first time commissioning this type of inverter, or it is known the inverter’s WiFi hotspot has been deactivated, it is recommended that you bring a computer with an Ethernet port and an Ethernet patch cable, as it will make the configuration process easier in case you experience any difficulty. Otherwise, any smartphone or tablet with WiFi capability should be sufficient.

The WLAN function is activated as standard at the time of manufacturing. To deactivate this function, it is necessary to access the web user interface of the inverter. First, make sure the inverter is commissioned. You will then need to access the inverter user interface using either the following two methods:

 

a) Connecting via WLAN

You will need to have a computer, a tablet or a smartphone with Wi-Fi capability.

 

b) Connecting via Ethernet

You will need a computer with an Ethernet interface.

Below is the detailed description of how to access the inverter user interface.

 

a) Connecting via WLAN

Search for Wi-Fi networks in your device. You will see the inverter network as SMA[serial number]. Connect to this network and enter the password. The Wi-Fi password for the first ten hours of operation is SMA12345. After this, use the WPA2-PSK password of that particular inverter which you will find on the inverter type label on the right hand side of the unit. Once you have successfully connected to this network, open an internet browser and enter the IP address in the address bar according to information below and press Enter.

3

This will take you to the login page of the inverter user interface. Log in as an Installer. If this is the first time you are logging in, you will be asked to create a password. Otherwise use the password set by the installer at the time of commissioning.

 

b) Connecting via Ethernet

Connect the inverter directly to a computer via an Ethernet patch cable. See below for the Ethernet connection point on the inverter.

Location of Ethernet connection points on Sunny Boy inverter models

Location of Ethernet connection points on Sunny Boy inverter models

Open an internet browser and enter the IP address in the address bar according to information below and press Enter.

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This will take you to the login page of the inverter user interface. Log in as an Installer. If this is the first time you are logging in, you will be asked to create a password. Otherwise use the password set by the installer at the time of commissioning.

 

Switching the WLAN interface off

Once logged in to the inverter user interface, you can switch off the WLAN function. However, be mindful that by doing so, future access to the inverter user interface will be possible only via an Ethernet connection. This means if you need to re-activate the WLAN function you must connect the inverter directly to a computer or a router via Ethernet.

Procedure:

1. On the menu, click on “Device Parameters” and then click on “Editing Parameters”.

2. Click on “System Communication”, then select “WLAN”.

Device Parameters

Device Parameters

3. To deactivate the WLAN direct connection, select “Soft-access-point is turned on” and set this parameter to “No”.

4. To deactivate the WLAN connection in the local network, select “Activated” and set this parameter to “No” ”.

 

 

Switching the WLAN interface on

To switch on the inverter’s WLAN function (if it has been deactivated), you will require either a computer or laptop and an Ethernet patch cable. Once the inverter is connected to the computer or laptop via Ethernet, open an internet browser and enter the IP address in the address bar according to your device (see below) and press Enter.

neuProcedure:

  1. On the menu, click on “Device Parameters” and then click on “Editing Parameters”.
  2. Click on “System Communication”, then select “WLAN”.

wifi5

  1. To activate the WLAN direct connection, select “Soft-access-point is turned on” and set this parameter to “Yes”.
  2. To activate the WLAN connection in the local network, select “Activated” and set this parameter to “Yes”.

wifi8

 

Conclusion

New Generation Sunny Boy inverters are equipped with a WLAN interface as standard. While this function facilitates easy system configuration and monitoring using WiFi, customers sometimes prefer to deactivate the WLAN function. The WLAN function can be easily deactivated by accessing the inverter user interface. However, once the WLAN interface is deactivated, it will only be possible to re-activate the WLAN by connecting the inverter directly to a computer or a router via Ethernet.

 

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The Author

Shahla Flynn (guest author)

Shahla is a Service Technician at SMA Australia.

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4 Comments

  • avatar

    Jarle Johannessen

    July 16, 2017 at 03:18

    Is it possible to after mount the WLAN interface in a SI 4.4M-11?
    What will I need?
    Is this a part of the SMA Webconnect-Interface SWDMSI-NR?

    Please advice.

    Reply »
    • avatar

      Jennifer Rößler

      July 17, 2017 at 13:52

      Hello Jarle,
      it isn`t possible to add a W-LAN interface in the Sunny Island 4.4M-11.
      The W-Lan interface is only for the new Sunny Island -12 and is directly on the board of the new one.
      Kind regards, Jennifer

      Reply »
  • avatar

    John

    June 17, 2017 at 06:50

    What is the maximum length of the Password the 3.0 can manage? The WiFi router password is 63 characters and the inverter fails to connect but when I shorten it to say 20, it connects. This is a little too weak for safe use. Can a firmware upgrade be implemented to increase the password length??

    Thnak you,

    John

    Reply »
    • avatar

      Jennifer Rößler

      June 23, 2017 at 07:25

      Dear John,

      The length of the wi-fi password can be up to 63 characters. Please check the wi-fi settings of your inverter again.

      Please do not hesitate to contact our service line if the issue persists. Our colleagues will be glad to assist further. See an overview of all service line phone numbers here.

      Kind regards, Jennifer

      Reply »

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