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FETtec SFOC Preliminary Manual

50a 4in1 esc
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FETTEC SFOC 50A 4in1 ESC preliminary manual
Introduction
FETtec SFOC (Simplified Field Oriented Control) is a new method for
controlling brushless three-phase motors, designed to make them more efficient
and responsive. By using this approach, motors can run up to 13% more
efficiently and accelerate up to 30% faster. Additionally, it offers other benefits
like better motor startup without sensors, less noise, and smoother overall
performance.
1. FETTEC SFOC 50A 4in1 ESC
2. Board size and mounting
3. Board connection
4. Supported ESC protocols
5. Getting started
6. ESC settings and Firmware update
7. ESC sensor calibration
8. SFOC tuning
9. Beep codes
10. Self test
Betaflight passthrough
11.

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Summary of Contents for FETtec SFOC

  • Page 1 FETTEC SFOC 50A 4in1 ESC preliminary manual Introduction FETtec SFOC (Simplified Field Oriented Control) is a new method for controlling brushless three-phase motors, designed to make them more efficient and responsive. By using this approach, motors can run up to 13% more efficiently and accelerate up to 30% faster.
  • Page 2 FETTEC SFOC (Simplified Field-Oriented Control) is a new sensorless motor control method invented by FETTEC. SFOC aims to combine the simplicity of block commutation ESCs with the advantages of FOC (Field-Oriented Control). This is achieved through new hardware and software that require no complex motor data, yet provide full sinusoidal motor current output, high efficiency, and smooth torque even at very high RPM.
  • Page 3 2. Board size and mounting The board's mounting pattern is 20x20mm with 4mm drill holes. There are white-marked rings around each mounting hole indicating the maximum screw or nut size (7mm). Underneath these white-marked rings are conductive copper traces that must not be scratched. Please use plastic washers, plastic screws, plastic nuts, or rubber bumpers for mounting.

  • Page 4: Board Connection

    (+) / BAT+: Positive supply +6 - +34V (board will get damaged on +40V or more) • (-) / GND: Negative supply (0V) • TLM: FETTEC Onewire or D-shot serial Telemetry signal • S1, S2, S3, S4: ESC Signal input (PWM, Dshot, BiDir Dshot, S2M) •...

  • Page 5: Getting Started

    The listed ESC motor control signals will be auto-detected: 1. PWM Signal: 1000-2000µs with 40-490Hz 2. Dshot: Dshot150, Dshot300, Dshot600, Dshot1200, and Dshot2400 3. Bidirectional Dshot600: RPM, temperature, voltage, and current feedback 4. FETTEC S2M: Serial protocol 5. FETTEC OneWire 5. Getting started Installation and Setup Instructions 1.
  • Page 6 6. ESC settings and Firmware update The preliminary ESC configurator can be found at https://gui.fettec.net/ESC. The recommended web browser is Google Chrome. Establishing a Connection to the ESC There are two ways to connect to the ESC: 1. Using the ESC's Own USB-C Port - Ensure no flight controller (FC) is connected.
  • Page 7 In the Settings tab, the ESC's configuration can be changed for each motor.
  • Page 8 Deactivates automatically after calibration (see "Sensor calibration" for details). • OneWire ID: Represents the ESC unit's FETtec OneWire ID (range: 1 – 20). Care must be taken to avoid conflicts if multiple ESCs share the same ID on the OneWire bus (default: auto-managed by configurator).
  • Page 9 In the Telemetry tab, connected motors can be tested, and telemetry can be viewed. To enable the throttle bar, select "Set Throttle." To allow negative throttle settings, select "Reversible." Telemetry values are displayed in a fixed-point format. For example, a voltage of 1500 represents 15V, and a current of 1200 represents 12A.
  • Page 10 For most setups, this tuning should not be necessary. However, if you experience issues with motor performance, you can make improvements here. Warning: Incorrect values in the SFOC tuning settings can cause sync losses and motor overheating. In the worst-case scenario, it can burn your motor.
  • Page 11 The auto-detected values can be seen in the telemetry tab, but only after startup and before a motor has run. This is visible only if the SFOC tuning setting value is 0. If any other value is saved, the manually set values will be displayed.

  • Page 12: Beep Codes

    - 3 Beeps: The ESC temperature exceeded 100°C, reducing the maximum output power to prevent damage. - 5 Beeps: The ESC was running with FETtec OneWire and S2M in parallel, and one of these signals experienced a fail-safe. 10. Beta flight pass through The FETTEC ESCs use a half-duplex serial connection at 2000,000 baud on the "TLM"...
  • Page 13 - In Betaflight, go to the "Ports" menu and reconfigure the UART as ESC sensor. - In the "Motors" menu, ensure the ESC telemetry pin is enabled. Connecting to the ESC Configurator After setting up the connection: 1. Open the FETTEC ESC configurator. 2. Select "Betaflight Passthrough" to connect to the ESCs.