1. Introduction
This 9IMOD AM32 80A Brushless Electronic Speed Controller (ESC) is pre-installed with custom AM32 firmware, optimized for RC crawler vehicles. It provides exceptionally smooth and quiet operation, making it suitable for various 1/8 scale or smaller cars. The ESC features a built-in adjustable quad-group voltage Battery Eliminator Circuit (BEC) with a maximum current of 10A, ideal for high-torque servo applications. An integrated e-Switch enhances durability and helps prevent failures in harsh environments. All wires are pre-soldered for convenience.
2. Key Features
- AM32 custom firmware for optimized performance.
- Sine wave start for ultra-low speed motor operation.
- Variable driving frequency.
- Comprehensive protection: low voltage, runaway, and rotor lock.
- High-performance 32-bit MCU.
- Durable and waterproof e-Switch.
- Pre-soldered wires for easy installation.
- Firmware upgradeable via Betaflight pass-through, single-wire serial, or Arduino.
- Supports Servo PWM and Dshot (300,600) motor protocols.
- Bi-directional rotation capability.
- KISS standard ESC telemetry.
- Adjustable BEC output voltage (5.2V, 6.0V, 7.4V, 8.2V).
3. Specifications
| Parameter | Value |
|---|---|
| Battery Input | 2~6S LiPo |
| Continuous Current | 80A |
| BEC Output | Max 10A, Adjustable 5.2V/6.0V/7.4V/8.2V via DIP switch |
| Electronic Switch | Supported |
| Cooling Fan | Included, with reserved power plug |
| Motor Power Connector | Not included |
| Power Wire Length | 14AWG x 150mm |
| Motor End Wire Length | 14AWG x 100mm |
| Signal Wire Length | 200mm |
| Electronic Switch Wire Length | 125mm |
| Dimensions (approx.) | Total length: 172mm, ESC width: 45mm, Wire length from ESC: 90mm |
4. Setup and Installation
4.1 Physical Connections
Connect the ESC to your RC vehicle components as illustrated below. Ensure all connections are secure and correctly oriented.
- Receiver Plug: Connects to your RC receiver for control signals.
- Power Switch: The included e-Switch for turning the ESC on/off.
- Motor Plug: Connects to your brushless motor. Note: Motor power connectors are not included and must be added by the user.
- Battery Plug: Connects to your 2-6S LiPo battery.
4.2 BEC Output Voltage Adjustment
The BEC output voltage can be adjusted using the DIP switches located on the ESC. Refer to the table and image below for the correct settings.
| DIP Switch 1 | DIP Switch 2 | BEC Output |
|---|---|---|
| OFF | OFF | 5.2V |
| OFF | ON | 6.0V |
| ON | OFF | 7.4V |
| ON | ON | 8.2V |
5. Operating Instructions
5.1 USBLink for Configuration and Firmware Upgrade
The USBLink module allows you to connect your ESC to a computer for configuration and firmware updates. It is compatible with AM32/BL32 firmware.
- Connect the ESC signal plug to the USBLink module.
- Connect the USB Type-C cable from the USBLink to your computer.
- Install the VCP driver on your computer if not already present.
- Download the Configuration Tool: Google Drive Link
- Download the CH340 Driver: WCH Website Link
- Open the ESC Configuration Tool.
- Check the 'Direct Connect' box (do not check if using a flight controller interface).
- Select the correct serial port number where the tuner is located.
- Click the 'Connect' button.
- Read the ESC settings using the M1 button.
- Adjust settings, change tabs, upload new firmware, or load default EEPROM settings.
- After making adjustments, save your settings.
- To verify settings, close the connection, then reconnect and press M1 again.
5.2 Recommended Setting Parameters
The recommended parameters depend on your battery configuration and motor specifications. Always set the motor KV value and the number of poles according to your motor's specifications.
Parameter Explanations:
| Setting Item | Description | Setting Value (Example) |
|---|---|---|
| Engine Stall Protection | Protects the motor from overheating due to being stuck. Usually, this setting is sufficient unless there are special needs. | Motor with greater external load |
| Start Strength Setting | Adjusts the timing of FET drive signal during startup. | Default |
| Loop (Forward/Reverse/Neutral) | Prevents idle vibration. When no power switching is activated, the change in the electrical center is very small. | Closed/Open |
| Caliper Soft Start Protection | This setting mainly reduces impact. When the ESC is loosely connected to the motor hook, activation will reduce the impact. | Motor current when soft protection is activated, closed when switching |
| Steering Auto Correction | Controls tire correction when steering is not touched. | Default does not interfere with body tilt. Left and right tilt |
| Stall Protection | Protective measure against aging of one end of the motor and circuit board damage to prevent reversal. | Suitable for stopping falls |
| Sine Start | Intensity setting (startup force). | Suitable for stopping falls |
| 30-degree Timer Using | Direction control. | Self-positioning location |
| Shielded/Sensor | ||
| Motor KV | The higher the motor KV value, the color. | According to your motor settings |
| Control Mode | Higher voltage mode of the electronic control. | Original controller |
| High Power Engine Setting | Adjusts the frequency of the control engine. | Original high-speed engine control |
| Frequency Response Start Protection | Controls the suppression of noise at startup for most engines. | Default |
| Sine Start | If you want the car to be stable when braking downhill, calibrate the parking at a fixed distance. | Default. The fixed distance remains unchanged. |
| Positive Start Power | Easier loss of rotational energy, stronger power setting. Uses less energy but has a stronger torque setting. Power setting under positive start. Should be easier to control. Stronger power may cause the vehicle to deplete prematurely. | Loss of power setting by electronics with multiple/success/failure/balanced items |
Important Setting Notes:
- If using a 6S lithium battery, do not set the sine power value to 10, as this can cause the motor and ESC to overheat.
- When using 3-4S lithium batteries, set the sine power value based on the direct weight of the vehicle. A value around 6-8 is typically appropriate.
6. Maintenance
To ensure the longevity and optimal performance of your 9IMOD AM32 80A ESC, follow these general maintenance guidelines:
- Cleaning: Regularly clean the ESC to remove dirt, dust, and debris. Use a soft brush or compressed air. Avoid using liquids directly on the ESC.
- Inspection: Periodically inspect all wires and connectors for signs of wear, fraying, or corrosion. Replace any damaged components immediately.
- Storage: Store the ESC in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Waterproofing: While the e-Switch is durable and waterproof, avoid prolonged submersion or exposure to excessive moisture to protect other components.
7. Troubleshooting
If you encounter issues with your ESC, consider the following common troubleshooting steps:
- No Power: Check battery connections, ensure the e-Switch is in the 'ON' position, and verify battery charge.
- Motor Not Responding: Ensure all motor wires are correctly connected to the ESC. Check your radio and receiver setup for proper binding and signal. Verify ESC settings via the USBLink.
- Overheating: Ensure adequate airflow around the ESC. Check motor KV and pole settings, especially for 6S batteries (refer to Important Setting Notes in Section 5.2). Reduce load if possible.
- Erratic Behavior: Re-check all wiring for loose connections. Ensure no interference from other electronic components. Re-calibrate your radio and ESC if necessary.
- Firmware Issues: If issues persist after checking physical connections and basic settings, try re-flashing the firmware using the USBLink and Configuration Tool.
8. User Tips
- Radio Pairing: For new setups or after changing your radio, ensure your radio and receiver are correctly paired and calibrated before operating the ESC. Refer to your radio's manual for specific pairing instructions.
- Initial Setup: Always perform an initial setup and calibration of the ESC with your radio to ensure proper throttle range and response.
- Parameter Tuning: Experiment with the 'Sine Mode Power' and 'Running Brake Level' settings in the configuration tool to fine-tune your crawler's performance for different terrains and driving styles. Start with conservative settings and adjust incrementally.
9. Compliance Information
⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
10. Support
For further assistance, technical support, or inquiries regarding your 9IMOD AM32 80A Brushless RC Crawler ESC, please contact the official 9imod store or your retailer. Keep your purchase records handy for any support requests.