LKHFOAQM 24H055M020
LKHFOAQM 24H055M020 DC 12V Brushless Servo Motor Instruction Manual
Model: 24H055M020
1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the LKHFOAQM 24H055M020 DC 12V Brushless Servo Motor. This motor features a built-in drive board, signal encoder feedback, and supports PWM speed regulation, making it suitable for various precision control applications. Please read this manual thoroughly before using the product to ensure safe and optimal performance.
2. Safety Instructions
- Always disconnect power before installation, maintenance, or troubleshooting.
- Ensure the power supply voltage matches the motor's specified voltage (DC 12V). Incorrect voltage can damage the motor.
- Avoid exposing the motor to moisture, dust, or extreme temperatures.
- Do not attempt to disassemble the motor or its built-in drive board, as this may void the warranty and cause damage.
- Handle the motor shaft and encoder carefully to prevent damage to precision components.
- Ensure proper ventilation around the motor during operation to prevent overheating.
3. Package Contents
Verify that all items are present in the package:
- 1 x LKHFOAQM 24H055M020 DC 12V Brushless Servo Motor with Built-in Drive Board
- 1 x Signal Encoder Feedback Cable (integrated or separate, depending on model variant)
- 1 x User Manual (this document)
4. Setup and Wiring
Follow these steps to properly set up and wire your brushless servo motor.
4.1 Motor Overview

Figure 1: Overview of the LKHFOAQM 24H055M020 DC 12V Brushless Servo Motor. This image shows the compact design, including the motor body, output shaft, and integrated wiring for power and control signals.
4.2 Wiring Connections
The motor features a built-in drive board and requires specific connections for power, PWM speed control, and encoder feedback. Refer to the wiring diagram (if provided separately or on the motor itself) for exact pin assignments.
- Power Supply: Connect a stable DC 12V power source to the designated power input terminals. Ensure correct polarity (+ and -).
- PWM Input: Connect your PWM signal source (e.g., microcontroller, PLC) to the PWM input pin. This signal controls the motor's speed.
- Encoder Feedback: The integrated encoder provides feedback on the motor's rotational position and speed. Connect the encoder output pins (typically A, B, and Z phases, plus VCC and GND) to your control system's encoder input. The motor has a 100-line encoder.
- Ground: Ensure all ground connections are common and properly secured.
Note: Incorrect wiring can damage the motor or control system. If unsure, consult a qualified technician.
5. Operating Instructions
Once properly wired, the motor can be operated using a PWM signal.
- PWM Speed Regulation: The motor's speed is directly proportional to the duty cycle of the input PWM signal. A higher duty cycle generally results in higher motor speed.
- Direction Control: The direction of rotation may be controlled by a separate digital input pin or by the polarity of a specific signal, depending on the drive board's design. Refer to the motor's specific pinout for details.
- Encoder Feedback: Monitor the encoder output signals to precisely track the motor's position and verify its speed. The 100-line encoder provides high-resolution feedback for closed-loop control systems.
- Initial Test: Start with a low PWM duty cycle and gradually increase it to observe motor response. Ensure the motor rotates smoothly without unusual noise or vibration.
6. Maintenance
The LKHFOAQM 24H055M020 brushless motor is designed for long-term, low-maintenance operation.
- Cleaning: Keep the motor free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquids or solvents.
- Inspection: Periodically inspect wiring connections for looseness or damage. Check the motor shaft for any signs of wear or obstruction.
- Ventilation: Ensure that the motor's operating environment allows for adequate airflow to prevent heat buildup.
- Lubrication: This brushless motor typically does not require external lubrication. Do not apply lubricants unless specifically instructed by the manufacturer.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not spin | No power supply; Incorrect wiring; No PWM signal; Motor locked. | Check power connections and voltage; Verify wiring against diagram; Ensure PWM signal is active; Check for mechanical obstructions. |
| Motor spins erratically | Unstable power supply; Noisy PWM signal; Encoder feedback issues. | Use a stable power supply; Filter PWM signal; Check encoder wiring and signal integrity. |
| Motor overheats | Excessive load; Insufficient ventilation; Prolonged operation at maximum power. | Reduce load; Improve ventilation; Operate within specified limits; Allow for cooling periods. |
| Inaccurate speed/position feedback | Damaged encoder; Incorrect encoder wiring; Signal interference. | Inspect encoder for physical damage; Verify encoder wiring; Shield encoder cables from electrical noise. |
8. Specifications
| Parameter | Value |
|---|---|
| Brand | LKHFOAQM |
| Model | 24H055M020 |
| Voltage | DC 12V |
| Maximum Speed | 3900 RPM |
| Outer Diameter | 41.9 MM |
| Motor Height | 34 MM |
| Motor Shaft Diameter | 6 mm (with flat position of 4.5 mm) |
| Output Shaft Length | 16.5 MM |
| Motor Weight | 118 grams |
| Line Length | 100 MM |
| Encoder Type | Signal Encoder Feedback |
| Encoder Resolution | 100 Line |
| Drive Board | Built-in |
| Speed Regulation | PWM |
9. Warranty and Support
This LKHFOAQM product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact LKHFOAQM customer support.
For technical assistance, troubleshooting, or warranty claims, please contact your retailer or the manufacturer directly.
Related Documents - 24H055M020
![]() |
Nidec 24H055M020 BLDC Brushless Motor Product Manual Product manual for the Nidec 24H055M020 12V BLDC Brushless Motor, detailing voltage, polarity, and age restriction guidelines for safe operation. |
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.
