Installation and Configuration Manual — KEBA KeContact P40 / P40 Pro

1. Introduction

1.1. Legal provisions

The information contained in these documents is the property of Heckert Solar GmbH. Publication, in whole or in part, requires the written consent of Heckert Solar GmbH.

Subject to changes and printing errors!

1.2. Qualification of the installing electrician

A qualified electrician is a person who has the necessary experience and training:

  • Setting up, switching on, switching off, disconnecting, short-circuiting and repairing circuits and devices

  • Standard maintenance and use of protective devices in accordance with current safety standards

  • First aid/emergency care

  • Current knowledge of local regulations, standards and guidelines

2. Product description

The Symphon-E App KEBA KeContact communicates with the FENECON Energy Management System via Modbus TCP/IP.

Please note that Modbus TCP/IP requires software version 1.2.0 or later.
This functionality has been tested and approved up to firmware version 1.3.0.

At the following KEBA Downloads & Updates eMobility website , you’ll find all software updates for the KEBA KeContact P40 / P40 Pro.

3. Commissioning

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To install the KEBA charging station, please follow the instructions in the "KeContact P40 / P40 Pro Charging Station Installation Manual."
Installation Manual — KEBA KeContact P40 / P40 Pro

This quick guide refers to the original user manuals.
It serves as an installation aid for qualified electricians in the area of communication interfaces, but is not a substitute for studying the user manuals.

Install the KEBA KeContact P40 / P40 Pro charging station according to the KEBA GmbH installation instructions.

Please note that the site conditions of KEBA GmbH apply.

Follow the instructions for the power supply for the KEBA KeContact P40 / P40 Pro charging station.

3.1. Ethernet connection

The KEBA KeContact P40 / P40 Pro series connects to the Energiemanagement System via the customer’s network using the LAN network interface (RJ45). Please follow the steps below.

Connect the RJ45 plug to the LAN network connection X3 provided on the KEBA KeContact P40.

ethernet X3
Image 1. Connection overview KEBA KeContact P40
ethernet lan
Image 2. Example of a network connection

In a network, IP addresses are typically assigned automatically via DHCP. In many cases, this is handled by the internet router, e. g. a router such as a FRITZ!Box. This can result in a loss of communication between EMS and the charging station. To prevent this, a static IP address can be assigned.

3.2. Assigning an IP address via DHCP

Once connected to the customer’s network, the KEBA KeContact P40 / P40 Pro is assigned an IP address via DHCP. This IP address can be found in the DHCP server, e. g. the router. Alternatively, the IP address of your KEBA KeContact P40 / P40 Pro can be retrieved via the KEBA eMobility App.

4. Configuration

The KEBA KeContact P40 / P40 Pro series can only be set up via the KEBA eMobility App. Please download the KEBA eMobility App from the AppStore or Google PlayStore.
Table 1. Home page of the KEBA eMobility App
start app

  1. Open the KEBA eMobility App.

  2. Click the green "+" button to set up a new KEBA KeContact P40 / P40 Pro.
setup app

  1. There are three ways to establish a connection to the new KEBA KeContact P40 / P40 Pro using the KEBA eMobility App. The following section describes the setup process via Add via Setup Guide.
auswahl app

  1. Select the desired KEBA KeContact series — here: KEBA KeContact P40 / P40 Pro.

Please make sure that Bluetooth activated on your cell phone.
Stay close by throughout the entire pairing process.
Table 2. Example of a network connection
pairing app

  1. The Bluetooth pairing process will then start automatically.
pairing app 2

  1. You may see several KEBA KeContact P40 / P40 Pro devices listed in your vicinity.
    Identify your KEBA KeContact P40 / P40 Pro using the serial number.
    Click on Connect Wallbox.
pairing app 3

  1. Confirm "Pair with P40_serial number?".

  2. Enter the PIN (see back of KEBA KeContact P40 instructions).
Table 3. Setup for Installer Accounts
installer id

  1. Under "Select role", choose "Installer".

  2. Click on "Next".

  1. You will then be prompted to enter the serial number and the installer PIN (see the back of the KEBA KeContact P40 manual).
installer pairing

  1. Select your preferred connection. We recommend connecting via "LAN".

  2. Click on "Pair wallbox".

This setting applies only to the "User" access level. Installers do not select a preferred connection.
Table 4. Configuration of the KEBA KeContact P40 / P40 Pro
pairing success

  1. Once the connection is established, the KEBA KeContact P40 / P40 Pro must be restarted.
    To do this, press and hold the service button for 6 seconds.
konfiguration

  1. Then, enter the following …​

    • for Max. HW current, indicate the maximum current in Ampere.

    • for Nominal voltage, enter the voltage of the grid to which the charging station is connected.

    • for phase rotation, indicate the sequence of the phases (or supply lines).

    • Under Max. Asym. Current, specify the maximum current in A for asymmetric charging.
konfiguration 2

  1. Then click on "Save" in the top right-hand corner.
finish

  1. You’ve done it! You have successfully completed the electrical commissioning.
Table 5. Read out IP address via the KEBA eMobility App
ip address 1

  1. On the overview page, click the button.
ip address 2

  1. Select the "Settings" tab.
ip address 3

  1. On the settings page, click the "Show more" button.
ip address 4

  1. The IP address (here: LAN) is then displayed.

Please make a note of the assigned IP address. The IP address is required below to set up the Symphon-E App KEBA KeContact.

The Symphon-E App KEBA KeContact communicates with the FENECON Energy Management System via Modbus TCP/IP.

The Symphon-E App KEBA KeContact uses a Modbus TCP/IP interface.
For the KEBA KeContact P40 / P40 Pro charging station, the Modbus TCP register must be enabled in the advanced settings of your KEBA eMobility App.
Table 6. Enabling Modbus TCP
ip address 1

  1. On the overview page, click the icon:ellipsis-v button [role=black, set=fas].
ip address 2

  1. Select the "Settings" tab.
modbus 1

  1. Scroll to the bottom of the settings page. Click the "Show Advanced Settings" button.
modbus 2

  1. Select the " Modbus" tab.
modbus 3

  1. Set the slider to "ON" to "Enable" Modbus TCP on your KEBA KeContact P40 / P40 Pro.

4.1. Updating the charging station firmware

The latest software updates are automatically displayed when you open the KEBA eMobility App.

This feature has been tested and approved up to firmware version 1.3.0.
Table 7. Software update of the KEBA KeContact P40 / P40 Pro
update 1

  1. Click on "Update" in the Update available pop-up.
update 2

  1. Your KEBA KeContact P40 / P40 Pro starts the software update.
update 3

  1. Please follow the instructions.
update 4

  1. After successful installation, click on "Finish update."

  2. Your KEBA KeContact P40 / P40 Pro will then be restarted.

The configuration is now complete.

5. Install Symphon-E App KEBA KeContact

In the Symphon-E App Center you will find all installable Symphon-E Apps — such as the Symphon-E App KEBA KeContact.

The user manual Symphon-E App Center provides detailed instructions on how to use the Symphon-E App Center. It also explains how to register and redeem a license key.

Then follow the instructions in the Symphon-E App installation wizard on your KEBA KeContact P40 / P40 Pro.

5.1. Installation wizard

You will then be taken to the installation wizard for Symphon-E App KEBA KeContact.

Please select the correct series for your KEBA KeContact under Product series.
fems app 5
Image 3. App installation — Variant 2: Step 7

Please select "P40" under product range if you have a KEBA KeContact P40 / P40 Pro.

fems app auswahl
Image 4. App installation — Selecting the KEBA KeContact P40

Confirm your selection by clicking the "OK" button.

The installation wizard for the KEBA KeContact P40 / P40 Pro will then be displayed.

fems app 5 p40 k
Image 5. App installation — Variant 2: Step 7

Some of the input fields are pre-filled. Nevertheless, enter your data if it differs from the default values (e. g. IP address). Otherwise, the default values can be retained (e. g. port, Modbus unit ID).

Mandatory fields are marked with *
Check your entries and make sure that they are correct. Otherwise the respective app will not work properly!

In the next step, you can set a phase rotation.

Please note that phase rotation is only included from FEMS release 2024.11.2 or later.

The phase connection L1_L2_L3 is selected as standard.

fems app rotation p40
Image 6. App installation — Phase rotation: Step 1

If your phase connection differs from this, you can select a different phase connection using the drop-down button.

fems app rotation 2
Image 7. App installation — Phase rotation 2: Step 2

Confirm with "OK".

Then click on "Install app".

fems app 7 p40 k
Image 8. App installation — Variant 2: Step 8

Once the installation process is complete, the new app appears in the overview of the Symphon-E App Center in the "Installed" category.

The Symphon-E App KEBA KeContact has been successfully installed.

5.2. Edit EMS app

Apps that have already been installed can be edited later to change their configuration settings. To do this, select the app in the Symphon-E App Center overview and click the "Edit App" button. Detailed instructions can be found in the App Center User Manual: https://docs.fenecon.de/en/fems/app_center/App_Center.html#_fems_app_bearbeiten.

If you accidentally selected the wrong product under Product Series, first uninstall Symphon-E App KEBA KeContact. To do this, select Symphon-E App KEBA KeContact in the Symphon-E App Center overview and click the "Remove App" button. Detailed instructions can be found in the user manual Symphon-E App Center. The redeemed license key can then be redeemed again for Symphon-E App KEBA KeContact.

6. Communication failure between KEBA P40/P40 Pro and EMS

Article updated: 24/09/2026

Currently, the log partition of the KEBA P40/P40 Pro may reach its capacity limit, which requires the wallbox to be restarted.

This applies in particular to systems in which the electric vehicle remains plugged in for an extended period and charging is paused, for example in OFF mode or PV Surplus mode when no PV surplus is currently available.

KEBA and Heckert Solar are currently working on a solution to the issue.

We apologize for any inconvenience this may have caused.

Until KEBA provides a fix, only operating modes that guarantee a charge or a minimum charging current should be used. Operating modes that may pause charging for an extended period while the vehicle is connected should be avoided.

6.1. Fault pattern

  • Error message: Modbus Communication Failed.

  • The wallbox no longer responds to control commands.

  • Communication between EMS and the wallbox is no longer possible.

  • A wallbox restart may only partially resolve the issue, and even then only temporarily.

  • In some cases, it is necessary to reset the wallbox to its factory settings.

6.2. Recommended interim solution

Until a compatible solution from KEBA and Heckert Solar is available, we recommend configuring the following settings, depending on the version you have installed:

Set the Base Mode to PV Surplus with Guaranteed Charging or Fast Charging.

or:

If the mode is set to OFF or Manual, change it to Automatic with Guarantee Minimum Charging.

In both cases, the wallbox is prevented from operating at a charging current of 0 A for an extended period of time.

6.3. Restarting the wallbox

To restart the KEBA P40/P40 Pro, follow these steps:

  1. Stop the current charging process.

  2. Disconnect the vehicle from the wallbox.

  3. De-energize the KEBA P40/P40 Pro using the MCB or upstream main switch.

  4. Please wait 30 seconds.

  5. Turn the power back on.
    This will restart the wallbox.

6.4. Reset to factory settings

  1. Restart the KEBA P40/P40 Pro.

  2. Check to see if communication between EMS and the wallbox has been restored.

  3. If the problem persists, reset the wallbox to its factory settings using the KEBA web interface or app, and perform the commissioning process again.