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Etrel INCH charging stations

Etrel

This guide explains how to configure and connect the Etrel INCH and INCH Duo smart AC chargers for communication with the SmartgridOne Controller.

Supported Devices​

Device TypeVariantsModbus TCP (Ethernet)RS485Curtailment
Etrel INCH / INCH DuoAll variants supporting Modbus TCP (via local network)✅❌✅ (per‑connector current control)
Etrel Inch EV charger

Wiring​

Ethernet connection​

  1. Connect the Ethernet (LAN) port of the charging station to the same local network as the SmartgridOne Controller.
  2. Make sure the LAN connection is live and the LEDs on the port are on.
  3. Recommended network cable: Cat 5e or higher, shielded for outdoor use if needed.

For general Ethernet wiring best practices, see the Ethernet wiring guidelines.

Configuration​

After the electrical installation of a charger is complete:

  1. Power up the charger.

    • The green LED will blink while the unit boots.
    • Wait until the LED turns steady green (charger ready).

  2. Access the local web interface.

    • Connect your laptop to the same network as the charger.
    • Open a web browser and enter the charger IP address shown on the sticker inside the side maintenance door.
    • If you cannot find the IP, press and hold the small reset button inside the maintenance area until a beep—then the current IP address is displayed on the screen.

  3. Log in and verify communication settings.

    • Check that the network configuration uses a fixed IP address in the same range as the Controller.
    • Subnet mask 255.255.255.0 and port 502 must be open for Modbus TCP.
    • DHCP can also be used if the controller supports automatic discovery.

  4. Enable Modbus TCP communication.

    • Open the web‑interface settings menu.
    • Ensure Modbus TCP communication is active (default unit ID = 1 / port 502).
    • No RS485 configuration is necessary.

  5. Check protection devices.

    • Confirm that RCD and over‑current protection are installed and active.
    • Etrel INCH units without built‑in RCD / MCB must be protected by external devices in the main distribution cabinet.

  6. Verify the LED and LCD indicators.

    • Steady green: charger available.
    • Blue blinking: charging in progress.
    • Red: fault—inspect or reboot before proceeding.

  7. Test communication.

    • From a PC, run ping <charger_ip> to verify the connection.
    • Then add the charger in the SmartgridOne Controller interface (Devices → Add device → EV charging station → Modbus TCP).
    • Enter the charger IP and port 502. Keep Unit ID = 1.

  8. Confirm Modbus control.

    • The controller will automatically read model, serial number, and connector data.
    • Each connector appears as a controllable child node.
Installer tip

If connection fails, use the side maintenance door to restart the station. Hold the reset button for 4 seconds until the beep, then choose Reset network to restore default IP (192.168.1.250).