1. Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your PWM DC Motor Speed Controller with Digital Display. This module is designed to provide precise speed control for DC motors, featuring a digital display for 0-100% speed indication and an adjustable drive module.
The product is an upgraded V2 version, offering improved stability compared to the original.
Figure 1: Cover page of the Motor Controller Description manual
2. Specifications
General Specifications:
- Working Voltage Range: 9V - 60V
- Output Voltage: Linear (under load)
- Rated Current: 12V35A
- Speed Control Range: 0% - 100% (digital display)
- Maximum Current: 60A
Figure 2: Important notes and specifications for the PWM controller
Environmental Requirements:
- Cooling Method: Natural cooling (forced air cooling recommended)
- Operating Environment: Avoid dust, oil mist, and corrosive gases.
- Operating Temperature: 0°C to +50°C
- Humidity: <80% RH, non-condensing, non-frosting
- Vibration: Max 5.9m/s²
- Storage Temperature: -20°C to +65°C
- Weight: Approx. 0.26Kg
Important Note:
Due to drastic changes in storage and transportation temperatures, condensation or frosting may occur. In such cases, the driver should be left for 12 hours until its temperature matches the ambient temperature before powering on.
3. Setup & Installation
Wiring Matching:
Connect the power and motor wires strictly according to the nameplate. Ensure the phase sequence, voltage, and current do not exceed the standard limits. The grounding must be firm.
Figure 3: PWM DC Motor Speed Controller Board (Top View)
Figure 4: Bottom view of the controller board
Figure 5: Angled view of the controller board showing components
Pin Definition and Dimensions:
Figure 6: Wiring diagram and dimensions of the controller with pin definitions
- Pin 1: Motor
- Pin 2: Motor
- Pin 3: Negative pole of power supply
- Pin 4: Positive pole of power supply
Figure 7: Dimensional drawing of the controller board
Physical Components:
Figure 8: Digital display, potentiometer, and power switch
Figure 9: Top view of the controller board with terminal blocks
General Installation Notes:
- Ensure good ventilation when installing the driver.
- If multiple drivers are used in parallel within a cabinet, maintain a distance of at least 5cm between them.
- For safety, always connect the driver's grounding terminal to the equipment's protective ground.
4. Operation
Parameter Setting:
Before starting up, adapt the rated parameters of the motor (power, speed, rated current) to the controller. Adjust the protection values (overcurrent, overheating, undervoltage) as needed.
Start-up Operation:
Avoid frequent start/stop cycles, forward/reverse rotation with carrier frequency, and soft start/soft stop. Prevent overloading and operating at excessive speeds.
Video 1: Demonstration of the PWM speed controller components and assembly
5. Maintenance
Environmental Protection:
Keep the controller away from dust, oil stains, and accumulated water. Operate within the rated temperature range and ensure proper ventilation and heat dissipation. Regularly clean any filter screens.
Maintenance Operations:
- During maintenance, the power must be cut off and discharged.
- It is strictly prohibited to plug and unplug wiring or remove the cover plate while the power is on.
- Regularly check the wiring terminals for looseness and erosion.
Adaptation Protection:
For outdoor or corrosive environments, use a protective controller with waterproof sealing for cables to prevent foreign objects from entering the housing.
6. Troubleshooting
Fault Handling:
If an alarm occurs and the unit shuts down, first power off. Troubleshoot the issue (check wiring, motor, and load), then reset the unit. It is strictly prohibited to operate the device with known faults.
If the controller experiences an over-temperature shutdown, ensure additional heat sinks are installed if necessary.
If an overcurrent (short circuit) fault occurs, check the motor wiring and other potential short circuits. After clearing the fault, power cycle the unit to reset.
If there is no motor fault indication, check the motor wiring. After confirming the wiring is correct, power cycle the unit to reset.
7. User Tips
- Voltage Compatibility: This controller supports a wide voltage range from 9V to 60V. Always verify that your power supply and motor voltage are within this range for optimal performance and safety.
- Control Method: The speed is adjusted via the integrated potentiometer and displayed digitally from 0-100%. This controller is not designed for 0-10V analog input control.
- Load Requirement: The PWM controller must be connected to equipment (a motor) to function properly. Do not test the controller without a load.
8. Warranty & Support
For detailed warranty information and technical support, please refer to the official product documentation or contact your vendor. Always ensure proper installation and operation to maintain warranty validity.
A user manual in PDF format is available for download. Please refer to it for comprehensive details: View User Manual (PDF)
