1. Introduction
The Flipsky FSESC 75450 is a high-current Electronic Speed Controller (ESC) designed for demanding applications such as e-foils, fighting robots, and other high-power remote control vehicles. Based on the VESC platform, it offers robust performance, advanced control modes, and comprehensive protection features. This manual provides essential information for the safe and effective use of your FSESC 75450.

2. Safety Information
Always exercise caution when working with high-voltage and high-current electronic components. Failure to follow safety guidelines can result in serious injury or damage to equipment.
- Ensure all connections are secure and properly insulated to prevent short circuits.
- Verify battery voltage and polarity before connecting to the ESC.
- Operate in a well-ventilated area, especially during initial setup and testing.
- Keep hands and loose clothing away from rotating parts when the motor is active.
- Disconnect the battery when not in use or during maintenance.
- Do not expose the ESC to moisture unless specifically designed for waterproof operation and sealed appropriately.
3. Product Overview
The FSESC 75450 features a robust design with an aluminum case and an aluminum PCB for enhanced heat dissipation. It supports various control modes and offers extensive protection features to ensure reliable operation.

Key Features:
- Adjustable protection against: low voltage, high voltage, over current, abnormal temperature, MOSFETs/motor over temperature.
- Support for various control modes: Current, Duty Cycle, Speed, and PID control.
- Integrated balancing car function via IMU module (e.g., MPU9250, MPU9150, MPU6050, LSM6DS3, BMI160) through the IIC interface.
- High-performance CPU: STM32F405 with a frequency of 168MHz.
- Aluminum PCB for superior heat dissipation, extending product lifespan.
- Built-in ignite power on/off switch button for convenient control.

4. Specifications
| Feature | Specification |
|---|---|
| Firmware | 5.2 (supports upgrade) |
| Voltage Range | 14-84V (4-20S LiPo) |
| Continuous Current | 50V/450A; 75V/350A (dependent on mounting, ambient temp, air/water circulation) |
| Burst Current | 1200A |
| BEC Output | 5V@1A |
| Max ERPM | 150000 |
| Communication Ports | USB, CAN, UART, SPI, IIC |
| Supported Sensors | ABI, HALL, AS5047, AS5048A |
| Input Source Support | PPM, ADC, NRF, UART |
| Sensorless Operation | Yes |
| Regenerative Braking | Yes |
| Programmable | Via VESC_TOOL |
| Power Switch | Red Switch Button (Ignite) |
| Phase Filter | Yes |
| Dimensions (with enclosure) | 227.5mm x 140mm x 54mm |
| Material | Metal (Aluminum Case, Aluminum PCB) |
| Certifications | CE, RoHS |


5. Setup and Installation
Careful wiring and installation are crucial for the optimal performance and longevity of your FSESC 75450. Refer to the wiring diagram below for all connections.
5.1 Wiring Diagram

5.2 Connection Points
- Motor Connections (A, B, C): Connect the three phase wires from your motor to the corresponding terminals on the ESC.
- Battery Connections (BAT+, BAT-): Connect your battery's positive terminal to BAT+ and negative terminal to BAT-. Ensure correct polarity.
- Communication Ports: The ESC provides various ports for communication and control:
- UART2: Universal Asynchronous Receiver-Transmitter for serial communication.
- SWD: Serial Wire Debug for firmware development and debugging.
- HALL: For Hall effect sensors in sensored motor operation.
- USB: For connecting to a computer for configuration via VESC_TOOL.
- COMM: General communication port.
- PPM: Pulse Position Modulation for traditional RC receiver input.
- CAN+POWER: Controller Area Network for multi-ESC setups and power.
- POWER SWITCH: Connect the external power switch here.
- IGNITE: For the ignite power on/off switch button.
- Water Cooling: Connect your water cooling system to the designated ports on the side of the enclosure (refer to Figure 3). Ensure a proper seal to prevent leaks.
5.3 Physical Mounting
Mount the ESC securely within your application, considering its dimensions (227.5mm x 140mm x 54mm) and the need for adequate air or water circulation for cooling. The aluminum PCB and enclosure are designed for efficient heat dissipation, but proper mounting in the system's airflow or water flow path is still important.

6. Operating Instructions
6.1 Power On/Off
Utilize the built-in ignite power on/off switch button for safely powering the ESC on and off. Always ensure all connections are correct before powering on.
6.2 Control Modes
The FSESC 75450 supports multiple control modes, configurable via VESC_TOOL:
- DC (Direct Current): Basic control mode.
- BLDC (Brushless DC): Standard control for brushless motors.
- FOC (Field-Oriented Control): Advanced control for smoother, more efficient, and quieter motor operation.
- Current Control: Regulates the motor current.
- Duty Cycle Control: Directly controls the PWM duty cycle.
- Speed Control: Maintains a target motor speed.
- PID Control: Proportional-Integral-Derivative control for precise regulation.
6.3 Programming with VESC_TOOL
The ESC is fully programmable using the VESC_TOOL software. Connect the ESC to your computer via the USB port. VESC_TOOL allows you to:
- Configure motor parameters (e.g., motor type, pole pairs).
- Set up input devices (PPM, UART, etc.).
- Adjust protection thresholds (voltage, current, temperature).
- Perform motor detection and calibration.
- Monitor real-time data and diagnose issues.
- Upgrade firmware to the latest version (Firmware 5.2 and above supported).
6.4 IMU Module for Balancing
For applications requiring self-balancing, the FSESC 75450 supports IMU modules (such as MPU9250, MPU9150, MPU6050, LSM6DS3, BMI160) via the IIC interface. This functionality can be configured within VESC_TOOL.
7. Maintenance
Regular maintenance helps ensure the longevity and performance of your FSESC 75450.
- Cooling System: Regularly inspect the water cooling system (if used) for blockages, leaks, or reduced flow. Ensure the system is filled with appropriate coolant. For air-cooled setups, ensure adequate airflow around the ESC.
- Connections: Periodically check all electrical connections for tightness and signs of corrosion or wear. Loose connections can lead to overheating and performance issues.
- Cleanliness: Keep the ESC free from dust, dirt, and debris. Use compressed air or a soft brush to clean the exterior. Avoid using liquids directly on the electronics.
- Environmental Conditions: Operate the ESC within its specified temperature and humidity ranges. Extreme conditions can degrade performance and lifespan.
- Firmware Updates: Keep the ESC firmware updated using VESC_TOOL to benefit from performance improvements and bug fixes.
8. Troubleshooting
The FSESC 75450 includes several protection features that can help diagnose issues. If you encounter problems, check the following:
- No Power: Verify battery connection, power switch functionality, and ensure the battery is charged.
- Motor Not Spinning/Erratic Behavior:
- Check motor phase wire connections (A, B, C).
- Perform motor detection and calibration in VESC_TOOL.
- Verify Hall sensor connections if using sensored mode.
- Check input signal from your remote/controller (PPM, UART).
- Overheating:
- Ensure adequate cooling (water flow or airflow).
- Check for excessive current draw from the motor.
- Reduce load or adjust motor parameters in VESC_TOOL.
- Protection Triggered (e.g., Low Voltage, Over Current, Over Temperature):
- Low Voltage: Recharge or replace battery. Adjust low voltage cutoff in VESC_TOOL if necessary (but be cautious not to over-discharge batteries).
- Over Current: Check for motor short circuits, excessive load, or incorrect motor parameters. Reduce current limits in VESC_TOOL.
- Over Temperature (MOSFETs/Motor): Improve cooling, reduce load, or adjust temperature limits in VESC_TOOL.
- Communication Issues: Ensure correct wiring for USB, CAN, UART, SPI, or IIC. Check driver installation for USB.
For persistent issues, consult the VESC community forums or contact Flipsky support.
9. User Tips
While no specific user tips were available from reviews or Q&A, general best practices for high-power ESCs include:
- Always start with conservative settings in VESC_TOOL and gradually increase parameters as you gain experience and confidence.
- Regularly monitor temperatures of the ESC and motor during initial runs to ensure your cooling solution is adequate for your specific application.
- Keep your firmware updated to benefit from the latest features and stability improvements.
10. Warranty and Support
Flipsky provides a warranty for its products under specific conditions. Please review the following terms carefully:
10.1 Warranty Period
- Consumable Electronic Products (ESC, VESC, Motor, Battery): 2 months from the 7th day after shipment (shipping date is checked by logistic record).
- Non-Electronic Products: 2 months from the 7th day after shipment (shipping date is checked by logistic record).
To claim warranty, you must return the product to Flipsky. Shipping costs for returns are typically borne by the customer. If repair is not feasible, a discount may be provided for a new replacement (excluding shipping cost).
10.2 Warranty Exclusions
The warranty does not cover:
- Purchase from unauthorized channels.
- Mechanical damage to electronic components or PCB.
- PCB board repair or soldering iron traces (excluding factory-installed cable bullet connectors).
- Water damage or external impact damage.
- Abnormal applications or use beyond product specifications.
- Wear and tear caused by normal use.
For products purchased from other channels, please contact the original purchase channel to deal with your problems.
10.3 Proof of Purchase
For warranty claims, you must provide your original source order number or personal card number. Warranty is valid only for the original purchased product; it does not transfer to second-hand transactions.
10.4 Important Notes
- Most products are tested before shipment.
- Any uncertainty regarding connections or information for VESC/Motor settings, please contact Flipsky before installation.
- Flipsky's liability will not exceed the actual purchase price of the product.
- Product orders cannot be canceled unless extra shipping cost is agreed upon.
- Service for reasonable charge is available if your product is out of warranty.
- This warranty policy was updated on 2018/11/1.
10.5 Contact Support
For any warranty claims or technical support, please contact Flipsky service at: flipsky_service@outlook.com





