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IBC Solar - AS-21 and AS-H31

Configuration Guide for IBC Solar AS-21 Series (5, 6) and AS-H31 Series (8, 10, 12)

Written by Timo Streckfuß

Before you start

Before you begin, make sure:

  • The inverter is physically installed and powered on

  • The inverter is updated to the latest software version

  • The Installer IBC HomeOne app is installed on your device

  • You are logged in to the Installer IBC HomeOne app


Step-by-Step Instructions

1. Connect the inverter to the network

  1. Connect an Ethernet cable to the LAN port on the inverter. The position of the Ethernet port differs between models. Refer to your inverter's manual for the exact port location.

  2. Verify the connection is established by checking the LED on the inverter or in the Installer IBC HomeOne app

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For network infrastructure requirements and troubleshooting, see Infrastructure requirements for the gateway.

2. Configure the fallback charging current

  1. Open the Installer IBC HomeOne app and select your inverter

  2. Navigate to fallback charging settings

  3. Set the fallback charging current based on your site's worst-case calculation. If no calculation is available or you are uncertain, set the value to 0

3. Discover the inverter in the commissioning wizard

The inverter is now ready for the commissioning wizard. The gateway will scan the network to find available devices, which may take a few minutes. Once complete, the IBC Solar inverter will appear on the results page.

When the inverter is detected, in most cases set the asset type to Hybrid (PV and Battery) from the dropdown.

If you are using the inverter exclusively as a PV inverter, select PV System. If it is used solely as a battery inverter, choose Battery.


Country-specific configurations

Germany

Applies to PV installations exceeding 2 kWp installed after February 24, 2025.

For detailed information refer to §9 EEG (2025) – 60% feed-in limitation

The inverter controls the grid feed-in limit, supporting energy management optimization. The following configuration on the inverter is mandatory:

  1. Navigate to
    Your systemDongleSettingsConfigure parameterE-meter

  2. Configure the following Export power limitation settings:

    • Activate export limitation: (Desired % of PV capacity × PV capacity in kWp) ÷ Inverter Nominal Power

  3. Save the settings

Set the following Energy management setting in the commissioning wizard:

  • Allow optimisation: Yes

  • Grid feed-in limit controlled by inverter: No


Additional Information

Multiple inverters (outside Germany or retrofit cases)

If you have multiple inverters at one location:

  • Connect each inverter to the network individually as a stand-alone asset

  • Only one inverter should have one battery and one meter installed according to OEM guidelines

  • Configure other inverters as PV inverters without meters

  • Install, configure, and commission all inverters as independent units

Important: Do not interconnect the inverters or configure them in Master-Slave mode according to the OEM guidelines, as this mode is not compatible with the local energy manager.


FAQ

Why isn't the inverter appearing in the commissioning wizard?

Check that the inverter is connected via Ethernet to the LAN port and that the connection LED is active. Verify the connection status in the Installer IBC HomeOne app. Restart the gateway and wait for the network scan to complete.

How do I update the firmware of the inverter?

Download the latest firmware from the IBC Solar website and perform the update through the Installer IBC HomeOne app.
For detailed update instructions, refer to the official IBC Solar documentation.


Supported models

AS-21 Series

  • 5 AS-H21

  • 6 AS-H21

AS-H31 Series

  • 8 AS-H31

  • 10 AS-H31

  • 12 AS-H31

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