DH Python Series ESC

DH Python Series Brushless ESC User Manual

Models: 20A, 40A, 60A, 80A, 100A SBEC

1. Introduction

The DH Python Series Brushless Electronic Speed Controller (ESC) is a high-performance, 32-bit microprocessor-controlled device designed for RC boats and underwater thrusters. It offers precise control, high reliability, and efficient power management for various marine applications. This manual provides essential information for the proper setup, operation, and maintenance of your Python Series ESC.

Overview of DH Python Series ESCs (20A-130A)
Figure 1: Overview of DH Python Series ESCs (20A-130A) showing various amperage models.

2. Features

  • Advanced MOSFET Technology: Utilizes a new generation of MOSFETs for low heat generation, instant large current handling, and high reliability.
  • High-Performance Microprocessor: Equipped with a powerful 32-bit microprocessor for enhanced computing ability, faster response, smoother startup, and accurate throttle linearity.
  • Waterproof Design: The ESC is waterproof and glued, featuring a flat water-cooling design for efficient heat dissipation.
  • Dual Running Modes: Supports two operational modes: "Forward Only" and "Forward and Backward" for diverse applications.
  • Energy Efficiency: Incorporates synchronous rectification to significantly reduce heating, leading to higher driving efficiency and energy savings.
  • Optimized Circuit Design: Control board and power board are designed separately, improving reliability and anti-interference capabilities, especially under high power conditions.
  • Powerful SBEC: Built-in upgraded high-power switching BEC, adjustable between 5V/6V, with a continuous output current of 8A and burst current up to 15A, capable of driving stronger servos and external devices.
  • Multiple Protections: Includes Start-up Protection, Over-Heat Protection, Low-Voltage Cutoff Protection, Phase Loss Protection, and Signal Loss Protection.
Diagram illustrating the 32-bit microprocessor in the ESC
Figure 2: Illustration of the high-performance 32-bit microprocessor.
Diagram showing waterproof design and running modes for an 80A ESC
Figure 3: Bilateral waterproof design and two running modes for marine applications.
Diagram illustrating the upgraded BEC with an RC boat
Figure 4: Upgraded high-power switching BEC for enhanced servo and external device support.
Diagram showing synchronous rectification for longer endurance and low heating
Figure 5: Synchronous rectification for improved efficiency and reduced heat.
Diagram showing separated control board and power board design
Figure 6: Separated control and power board design for enhanced reliability and anti-interference.

3. Specifications

The following table details the specifications for various models within the DH Python Series ESC line:

Specification table for Python Series ESCs (20A-100A)
Figure 7: Detailed specifications for Python Series ESC models.
TypePN#ModelCont./Burst Current(A)Battery cell NiXX\LipoWeight(g)BEC OutputSize(mm) L*W*HUser Program
Python 20A SBEC702021020\30A5-12NC\2-4Lipo305.5V/4A62*30*9Yes
Python 30A SBEC703021030\40A5-12NC\2-4Lipo315.5V/4A62*30*9Yes
Python 40A SBEC704021040\55A5-12NC\2-4Lipo405V/6V 4A75*32*9Yes
Python 50A SBEC705021050\65A5-12NC\2-4Lipo415V/6V 4A75*32*9Yes
Python 60A SBEC706021060\80A5-18NC\2-6Lipo705V/6V 8A72*40*12.5Yes
Python 80A SBEC708021080\100A5-18NC\2-6Lipo905V/6V 8A96*43.5*13Yes
Python 100A SBEC7100210100\120A5-18NC\2-6Lipo1005V/6V 8A96*43.5*13Yes

General Product Properties:

  • Material: Composite Material
  • For Vehicle Type: Boats
  • RC Parts & Accs: Speed Controllers
  • Recommend Age: 14+ years
  • Certification: CE
  • Is Electric: No Battery (refers to the ESC itself not containing a battery)
  • Is Batteries Included: No
  • Quantity: 1 pcs

4. Setup

Proper setup is crucial for the safe and efficient operation of your ESC. Follow these general guidelines:

  1. Motor Connection: Connect the three motor wires to the three output wires of the ESC. These typically use 3.5mm banana plugs. Ensure secure connections.
  2. Battery Connection: Connect the battery to the power input wires of the ESC. The ESC typically uses an XT60 plug for battery connection. Ensure correct polarity (red to positive, black to negative).
  3. Receiver Connection: Connect the signal cable from the ESC to the throttle channel of your RC receiver.
  4. Water Cooling: Ensure the water cooling system is properly connected and functioning to dissipate heat from the ESC.
  5. Mounting: Securely mount the ESC in your RC boat or thruster, ensuring it is protected from physical damage and has adequate airflow for cooling (in addition to water cooling).
Python 20A SBEC ESC showing XT60 battery plug and 3.5mm banana motor plugs
Figure 8: Python 20A SBEC ESC with XT60 battery plug and 3.5mm banana motor plugs.
Python 40A SBEC ESC showing XT60 battery plug and 3.5mm banana motor plugs
Figure 9: Python 40A SBEC ESC with XT60 battery plug and 3.5mm banana motor plugs.
Python 60A SBEC ESC showing XT60 battery plug and 3.5mm banana motor plugs
Figure 10: Python 60A SBEC ESC with XT60 battery plug and 3.5mm banana motor plugs.
Python 80A SBEC ESC showing XT60 battery plug and 3.5mm banana motor plugs
Figure 11: Python 80A SBEC ESC with XT60 battery plug and 3.5mm banana motor plugs.
Python 100A SBEC ESC showing XT60 battery plug and 3.5mm banana motor plugs
Figure 12: Python 100A SBEC ESC with XT60 battery plug and 3.5mm banana motor plugs.

5. Operating Instructions

Once the ESC is correctly installed and connected, follow these steps for operation:

  1. Power On: Turn on your RC transmitter first, then connect the battery to the ESC. The ESC will perform a self-test and emit a series of beeps.
  2. Throttle Calibration: If necessary, calibrate the throttle range according to your transmitter's instructions. The Python Series ESC features super smooth startup and accurate throttle linearity.
  3. Running Modes: The ESC supports two running modes:
    • "Forward Only": For applications requiring only forward motion.
    • "Forward and Backward": For applications requiring both forward and reverse capabilities. This mode is suitable for most RC boats and underwater thrusters.
  4. Normal Operation: Use your transmitter's throttle stick to control the motor speed. The advanced 32-bit microprocessor ensures a responsive and stable control experience.
  5. Power Off: Disconnect the battery from the ESC first, then turn off your RC transmitter.

6. Programming

The DH Python Series ESC offers flexible programming options to customize its parameters:

  • LCD Program Card: An external LCD program card (e.g., ZTW LCD Program Card G2) can be used for easy and convenient parameter adjustment.
  • Phone App: Programming can also be done via a dedicated phone application, requiring an additional ZTW App Adapter.
  • Transmitter: Basic programming can be performed directly through your RC transmitter. Refer to the specific programming instructions for detailed steps.
Diagram showing programming options: LCD Program Card, Phone App, Transmitter
Figure 13: Programming options for the Python Series ESC.
ZTW LCD Program Card G2
Figure 14: Example of a compatible ZTW LCD Program Card G2.

7. Maintenance

To ensure the longevity and optimal performance of your ESC, consider the following maintenance tips:

  • Regular Inspection: Periodically check all connections (motor, battery, receiver) for any signs of wear, corrosion, or loose contacts.
  • Cleaning: Although the ESC is waterproof, it's good practice to gently clean any dirt or debris from its surface after use, especially around the water cooling inlets/outlets.
  • Heat Management: Always ensure the water cooling system is clear and functioning correctly. Blockages can lead to overheating and damage.
  • Storage: Store the ESC in a dry, cool place away from direct sunlight and extreme temperatures.

8. Troubleshooting

The Python Series ESC is equipped with multiple protection features to prevent damage. If you encounter issues, consider the following:

  • No Power/Response: Check battery connection, battery charge level, and receiver connection. Ensure the ESC is properly armed.
  • Motor Stuttering/Irregular Operation: Verify motor wire connections, check for motor damage, and ensure correct throttle calibration.
  • Overheating: Check the water cooling system for blockages or leaks. Ensure the ESC is not overloaded (e.g., using too large a propeller or motor for the ESC's rating).
  • Protection Activation: The ESC features Start-up Protection, Over-Heat Protection, Low-Voltage Cutoff Protection, Phase Loss Protection, and Signal Loss Protection. If the ESC stops working unexpectedly, these protections might have been triggered. Identify the cause (e.g., low battery voltage, high temperature) and rectify it before resuming operation.
Diagram illustrating multiple protection features of the ESC
Figure 15: Multiple protection features for enhanced safety and durability.

9. User Tips

  • Compatibility: The Python Series ESC shares similarities with ZTW Shark ESCs, particularly regarding programming options. If you are familiar with ZTW Shark programming cards or apps, they may be compatible with this ESC (verify specific models).
  • BEC Output: The adjustable 5V/6V 8A SBEC is powerful enough for most standard and high-torque servos. Ensure your servos and other connected devices operate within these voltage limits.

10. Warranty and Support

For any technical assistance, warranty claims, or support inquiries, please contact the seller or manufacturer directly. Keep your purchase records handy for faster service.

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