The cFos Power Brain Controller is a charge controller and has the following components:

• 230V relay for switching a 3-phase contactor to release the charging current
• optional connection of a DC residual current sensor from Western Automation
• RS 485 interface
• I2C interface for connection of displays and RFID readers ⁽¹⁾
• 2 S0 inputs ⁽²⁾
• GPIO Pinheader with numerous analog and digital inputs and outputs
• 230V integrated power supply

At the heart of the cFos Power Brain Controller is an ESP32 from Espressif Systems. With the help of this powerful microcontroller, the cFos Power Brain Controller can speak the following communication protocols:

• WiFi 802.11 b/g/n, including full TCP/IP stack
• OCPP 1.5 and OCPP 1.6 (SOAP and JSON), both client and backend
• HTTP, MQTT
• Modbus TCP and RTU

You can therefore use cFos Power Brain Controller to build a EVSE that speaks OCPP and Modbus at the same time and can also be controlled via an HTTP API. Such EVSEs can then be easily networked via WiFi

The cFos Power Brain Controller can read meters via Modbus, e.g. the ABB B23 112-100 (but also others according to your requirements) or up to two S0 meters via the S0 inputs. With this charge controller, the wallbox can be inexpensively equipped with an intermediate meter for billing purposes and at the same time optionally read other meters from consumers or generators (solar system).

Of course our own EVSE uses the cFos Power Brain Controller.

Questions and Answers regarding cFos Power Brain Wallbox, cFos Power Brain Controller and cFos Charging Manager