The cFos Power Brain Controller is a controller for installation in an EVSE for charging electric cars according to IEC 62196 (type 2). For this purpose, the cFos Power Brain Controller monitors the "Charge Pilot" (CP) and "Proximity Pilot" (PP) signals of the connection cable to the EVSE. A resistor in the cable signals the maximum charging current for which the cable is designed via PP. CP is used to detect the car, monitor short circuits and signal the maximum charging current via PWM.
The cFos Power Brain Controller has the following components:
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:
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. This allows the EVSE to be cost-effectively 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.
(1) Only for devices supported by the cFos Power Brain Controller, i.e. only for controllers installed in large numbers in EVSE EVSEes from OEM partners. For the cFos Power Brain Wallbox, only the respective scope of equipment described there applies.
(2) The inputs can be controlled potential-free. Voltage from approx. 3.3V to 24V. The cFos Power Brain Controller can optionally supply 12V voltage for this.
Parking garage for apartment building and condominiums
Apartment house with 13 parties and underground car park
cFos Charging Manager on the Smart Meter Gateway
Billing and use of calibrated meters
Running Raspberry Pi with Huawei LTE Stick/Router
Set up a charging park and solar surplus with the help of a Raspberry Pi
Modbus wiring instructions (PDF)
cFos Charging Manager App - Download and functions
Instructions for installing the cFos Charging Manager on a Raspberry Pi
What's new in the current version of the cFos Charging Manager?
Check yourself if the cFos Charging Manager is compatible with your inverter.
RFID and PIN functions
Clever charging functions
Environmentally friendly charging
Formulas for meters and charging rules
OCPP configuration for cFos Charging Manager, cFos Power Brain Controller and the cFos Power Brain Wallbox
COM Port Counter
operate cFos Charging Manager with Volkszähler/vzlogger
Optical read heads and SML counters
cFos Power Brain Controller with Modbus meter or S0 meter