FETtec ESC 45A User manual

4in1 ESC 45A
Manual
You can find this manual online at www.fettec.net/downloads
Page 1

Table of Contents
Introduction...............................................................................................................................................................................3
Features...................................................................................................................................................................................................3
Safety warning..........................................................................................................................................................................3
Connection Diagram..............................................................................................................................................................4
Top/Bottom ayout.............................................................................................................................................................................4
Dimension (in mm)..............................................................................................................................................................................4
Basic Setup.................................................................................................................................................................................5
4S................................................................................................................................................................................................................5
6S................................................................................................................................................................................................................5
FETtec FC.................................................................................................................................................................................................5
Betaflight.................................................................................................................................................................................................6
Connection.......................................................................................................................................................................................6
Configuration..................................................................................................................................................................................6
FETtec Configurator................................................................................................................................................................7
Settings....................................................................................................................................................................................................7
Page 2

Introduction
Thank you for purchasing the FETtec ESC. This is a high-quality sensor-less brush-less electronic 4
in 1 speed control.
Features
•Active current limiting @ 45A
•Input voltage: 3S-6S
•High quality 40V MOSFETs
•STM32G071 @ 64MHz
•128 kHz Motor PWM
•Automatic input signal detection
◦Dshot 300-2400
◦PWM
◦OneShot 42/125
◦in development: Crossfire, OneWireBus, Sbus, Graupner HoTT
•Soldering holes for up to 5 additional capacitors (required for 5S and 6S application)
•KISS FC Passthrough
•Betaflight Passthrough (in development)
Safet warning
•Remove propeller before flashing and configuration!
•The ESC can heat up to 100°C and more
•Please ensure that there is enough space and airflow to prevent any damage because of
overheating
•Please check periodically for firmware updates in the FETtec Configurator
Page 3

Connection Diagram
Top/Bottom La out
S1 – S4 – Motor Signal 1-4
T M – Telemetry (Serial)
GND – Reference Signal Ground
Dimension (in mm)
The ESC comes with a 30,5x30,5mm mounting hole layout designed for M3 and M4 screws.
Original is for M3 while you can use a screw driver and force it into M4 by rotating it inside the hole
carefully.
Page 4

Basic Setup
4S
For 4S usage please note that on 5”and higher builds the use of the supplied capacitor is advised.
On 4”builds the capacitor is not required.
6S
For 6S usage an additional capacitor with the following specification is required. You can use either
a single capacitor or use multiple ones which can be connected on each corner of the ESC.
Minimum 470uF
50V
ESR < 1ohm
We recommend to use the provided 477CKE050M capacitor.
FETtec FC
Use the 8pin cable which comes with the ESC to connect it to the FETtec FC
Page 5

Betaflight
Connection
Signal 1 – 4 have to be connected to the corresponding FC Motor outputs. The T M wire has to be
connected to an available serial TX pin.
Configuration
In order to utilize ESC provided current and voltage sensor the following settings need to be
applied to betaflight. (Feature, motor protocol and meter can be configured through the GUI itself).
In addition the correct serial port need to be selected and assigned to ESC sensor.
feature ESC_SENSOR
set motor_pwm_protocol = DSHOT600
set current_meter = ESC
set battery_meter = ESC
set esc_sensor_half uplex = ON
Page 6

FETtec Configurator
Please update your ESC periodically with the current Firmware version.
The ESC configuration tool is available at https://github.com/FETtec/ESC-Configurator
The ESC firmware is available for download at https://github.com/FETtec/ESC-Firmware
FC passthrough is available for the following platforms:
•KISS FC – Firmware 1.3-RC36j (or higher)
•Betaflight 4.1 firmware (Minimum requirement for Onewire is STM32F4)
Settings
Mainpage to connect to the ESC. Please select correct connectivity type and serial/COM port.
The Overview page allows to flash individual ESCs
Page 7

The Setting page allows to adjust all available ESC parameter
- Reverse rotation direction
- Slow start
- 3D mode
- PWM min & max signal
- ESC Beep enabled
- Current calibration
- Individual ESC ID (for use on onewire protocol)
In Telemetr page you can spin the motors, view and debug the Motor telemetry.
Page 8