Introdução
This manual provides comprehensive instructions for the Voktta PWM DC Motor Speed Controller, Model VKXN0029. This device is designed to regulate the speed of DC motors by adjusting the Pulse Width Modulation (PWM) signal. It is suitable for DC motors operating within a voltage range of 9V to 60V and a maximum power output of 500W. Key features include soft start protection, a digital encoder knob for precise control, and adjustable duty cycle and frequency settings.
Leia atentamente este manual antes da instalação e utilização para garantir o uso seguro e eficiente do produto.
Informações de segurança
- Certifique-se de que a fonte de alimentação voltage is within the specified range (DC 9V-60V) to prevent damage to the controller and motor.
- Always disconnect power before making any wiring connections or disconnections.
- Observe correct polarity when connecting the power supply and motor. Reverse polarity can cause irreversible damage.
- Do not exceed the maximum rated current of 20A or maximum power of 500W.
- Mantenha o dispositivo longe de umidade, poeira e temperaturas extremas.
- This product is intended for industrial and hobbyist use. Professional installation is recommended if you are unfamiliar with electrical wiring.
Produto acimaview
The Voktta PWM DC Motor Speed Controller features a compact design with a digital display and an encoder knob for user interaction. The unit's dimensions are 79mm x 43mm x 26mm.

Figura 1: Frente view of the Voktta PWM DC Motor Speed Controller.

Figure 2: Dimensions of the Voktta PWM DC Motor Speed Controller (79mm x 43mm x 26mm).
Componentes principais:

Figure 3: Front panel with labeled controls and display.
- Digital Display (Nixie tube): Shows the motor adjustment duty cycle, and allows setting upper/lower limits and frequency.
- Rotary Encoder Knob: Used to adjust motor speed. Turning left decreases the duty cycle, turning right increases it.
- Botão do codificador: A short press controls motor start and stop. A long press enters the setting mode for parameters.
- Motor Start/Stop Light: Indicates motor status (light on for start, off for stop).
Configuração e instalação
Proper wiring is crucial for the safe and correct operation of the speed controller. Refer to the wiring diagram below.

Figure 4: Wiring diagram for the Voktta PWM DC Motor Speed Controller.
Instruções de ligação:
- Entrada de energia: Connect your DC power supply (9V-60V) to the "POWER+" and "POWER-" terminals. Ensure correct polarity.
- Saída do motor: Connect your DC motor to the "MOTOR+" and "MOTOR-" terminals. The motor's rotation direction can be reversed by swapping these connections.
- External Control (Optional): The unit can be connected to a switch signal or a 3.3V level signal via the J3 terminals (STOP, GND, CTRL) to control motor start and stop.
- Montagem: The controller is designed for panel mounting. Ensure adequate ventilation around the unit.
Warning: Double-check all connections before applying power to prevent damage.
Instruções de operação
1. Ligar/desligar
- After wiring, apply power to the controller. The digital display will light up.
- To start the motor, short press the rotary encoder knob. The motor start light will illuminate.
- To stop the motor, short press the rotary encoder knob again. The motor start light will turn off.
2. Ajustando a velocidade do motor
- With the motor running, turn the rotary encoder knob clockwise to increase the motor speed (increase duty cycle).
- Turn the rotary encoder knob counter-clockwise to decrease the motor speed (decrease duty cycle).
- The digital display shows the current duty cycle percentage.
3. Parameter Settings (Advanced)
To enter the parameter setting mode, long press the rotary encoder knob until the display changes.
- Setting Duty Cycle Limits:
- In setting mode, rotate the knob to select the parameter for minimum duty cycle (e.g., 'L00' for 0%). Press the knob to confirm.
- Rotate the knob to adjust the value. Press again to save and move to the next parameter.
- Repeat for maximum duty cycle (e.g., 'H100' for 100%).
- Setting PWM Output Frequency:
- In setting mode, rotate the knob to select the frequency parameter (e.g., 'F20' for 20 KHz). Press the knob to confirm.
- Rotate the knob to adjust the frequency (1 KHz to 99 KHz). The default frequency is 20 KHz. Press again to save.
- Exiting Setting Mode: Long press the rotary encoder knob again to exit the setting mode and return to normal operation.
The soft start protection feature automatically reduces the initial current surge, protecting the motor and extending its lifespan.
Especificações
| Parâmetro | Valor |
|---|---|
| Vol operacionaltage | DC 9V ~ 60V |
| Corrente nominal | 12A |
| Corrente Máxima | 20A |
| Potência máxima | 500 W |
| Frequência de operação | 1 KHz ~ 99 KHz (Adjustable, Default 20 KHz) |
| Precisão da Freqüência | 1% |
| Faixa de ciclo de trabalho | 0% ~ 100% (1% step) |
| Dimensões do produto | 79 mm x 43 mm x 26 mm |
| Peso | 60g |
| Número do modelo | VKXN0029 |
Manutenção
- Mantenha o controlador limpo e livre de poeira e detritos. Use um pano macio e seco para a limpeza.
- Verifique regularmente todas as conexões da fiação para garantir que estejam seguras e livres de corrosão.
- Avoid exposing the device to direct sunlight or high humidity for extended periods.
- Não tente abrir o casing or modify the internal circuitry, as this will void any warranty and may cause damage or injury.
Solução de problemas
| Problema | Possível causa | Solução |
|---|---|---|
| O controle não liga. | No power supply, incorrect wiring, or reverse polarity. | Verifique a conexão da fonte de alimentação e a voltagem.tage. Verify wiring polarity. |
| O motor não funciona. | Motor not connected, motor stop engaged, or duty cycle set to 0%. | Ensure motor is connected. Short press the knob to start the motor. Increase duty cycle. |
| A velocidade do motor não pode ser ajustada. | Knob malfunction or in setting mode. | Ensure not in setting mode (long press to exit). Check knob for physical damage. |
| Motor runs erratically. | Unstable power supply or loose connections. | Verify power supply stability. Check all wiring connections for tightness. |
Garantia e Suporte
Voktta products are manufactured to high-quality standards. For any questions, technical support, or warranty inquiries, please contact your retailer or the manufacturer directly. Please refer to your purchase documentation for specific warranty terms and contact information.