1. Киришүү
This manual provides detailed instructions for the installation, operation, and maintenance of the DEWIN CONN873 Sensorless Brushless Three-Phase BLDC Motor Speed Controller. This device is designed for precise speed regulation of three-phase brushless DC motors operating within a DC 5V-36V range, supporting both clockwise (CW) and counter-clockwise (CCW) rotation.
2. Продукт бүтүп калдыview
The DEWIN CONN873 controller is a compact and efficient unit featuring a main control board housed in a protective casing, along with external components for speed and direction control.

Figure 2.1: DEWIN CONN873 Brushless Motor Speed Controller with its protective casing open, revealing the circuit board with heat sinks and connection terminals.

Figure 2.2: Dimensions of the DEWIN CONN873 controller, showing approximate measurements of 10cm (3.94 inches) in length, 4cm (1.57 inches) in width, and 6.8cm (2.68 inches) in height.

Сүрөт 2.3: Жакын пландан view of the B100K potentiometer, used for adjusting motor speed.

Сүрөт 2.4: Жакын пландан view of the ON-ON toggle switch, rated 6A 125VAC, used for controlling motor direction (CW/CCW).
3. Техникалык шарттар
| Өзгөчөлүк | Спецификация |
|---|---|
| Бренд | DeWin |
| Модел | CONN873 |
| Киргизүү көлөмүtage | DC 5V-36V |
| Материал | Металл |
| Колдонмо | Three-phase sensorless brushless DC motors |
| Ылдамдыкты көзөмөлдөө | Potentiometer |
| Багыттарды көзөмөлдөө | Toggle Switch (CW/CCW) |
| Өндүрүүчү бөлүгүнүн номери | CONN873 |
| UPC | 738613669429 |
4. Коопсуздук маалыматы
- Always disconnect power before making any connections or disconnections.
- Киргизүү көлөмүн камсыз кылыңызtage is within the specified range (DC 5V-36V). Exceeding this range can damage the controller.
- Verify correct polarity for power connections (DC+ to positive, DC- to negative). Incorrect polarity will damage the unit.
- Avoid short circuits between motor phases or between phases and ground.
- Operate the controller in a well-ventilated area to prevent overheating.
- Keep the device away from moisture, dust, and corrosive substances.
- This product is intended for use by individuals familiar with electronic components and motor control systems.
5. Орнотуу
Follow these steps to correctly set up your DEWIN CONN873 motor speed controller:
- Компоненттерди аныктоо: Familiarize yourself with the controller board, potentiometer, and toggle switch.
- Кубат менен камсыздоого туташуу: Connect your DC power supply (5V-36V) to the terminals labeled DC+ (оң) жана DC- (negative) on the controller board. Ensure correct polarity.
- Мотор туташуусу: Connect the three phase wires of your BLDC motor to the terminals labeled A, B, жана C on the controller board. The order of connection for A, B, C may affect the initial direction of rotation.
- Потенциометрди туташтыруу: The potentiometer is pre-wired and connects to the designated port on the controller board. This will control the motor speed.
- Direction Switch Connection: The toggle switch is pre-wired and connects to its designated port. This switch controls the motor's rotation direction.

Figure 5.1: Wiring diagram showing connections for power supply (DC+, DC-) and motor phases (A, B, C) to the controller board. The potentiometer and toggle switch are also shown connected.
6. Иштөө нускамалары
Once the controller is properly wired, follow these steps to operate your BLDC motor:
- Күйгүзүү: Apply power to the controller within the DC 5V-36V range.
- Багыт коюу: Use the toggle switch to select the desired rotation direction (CW or CCW). It is recommended to change direction only when the motor is stopped or at very low speed to prevent mechanical stress.
- Ылдамдыкты жөндөө: Rotate the potentiometer knob to adjust the motor speed. Turning the knob clockwise typically increases speed, while counter-clockwise decreases it.
- Өчүрүү: To stop the motor, turn the potentiometer to its minimum setting, then disconnect the power supply.
7. Техникалык тейлөө
The DEWIN CONN873 controller is designed for reliable operation with minimal maintenance. Adhere to the following guidelines:
- Тазалыкты сактоо: Regularly clean the controller and its casing to prevent dust and debris accumulation, which can hinder heat dissipation. Use a soft, dry cloth.
- Байланыштарды текшерүү: Мезгил-мезгили менен бардык зымдарды байланыштарды текшерип туруңуз, алар коопсуз жана коррозия же зыянга учурабайт.
- Экологиялык шарттар: Ensure the operating environment remains within recommended temperature and humidity ranges to prolong the lifespan of the electronic components.
- Ашыкча жүктөөдөн качыңыз: Do not operate the motor or controller beyond their specified current and voltage limits, as this can lead to overheating and permanent damage.
8. Кыйынчылыктарды
If you encounter issues with your DEWIN CONN873 controller, refer to the following troubleshooting guide:
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Мотор иштебейт | Электр энергиясы жок Incorrect power polarity Бошоң байланыштар Motor or controller fault | Электр менен камсыздоону жана тtage Verify DC+ and DC- connections Бардык зым туташууларын бекемдеңиз Test motor independently; contact support if controller is faulty |
| Motor runs erratically or at incorrect speed | Potentiometer issue Motor phase wiring incorrect Motor not compatible (e.g., brushed DC motor) | Check potentiometer connection and function Re-check motor phase connections (A, B, C) Ensure a three-phase sensorless BLDC motor is used |
| Motor does not change direction | Toggle switch issue Motor phase wiring | Check toggle switch connection and function Ensure motor phase wiring is correct and allows for reversal |
| Контроллер ысып кетет | Ашыкча жүктөө Начар желдетүү Кыска туташуу | Reduce motor load Ensure adequate airflow around the controller Check for any short circuits in wiring |
9. Кепилдик жана колдоо
DEWIN products are manufactured to high-quality standards. For warranty information or technical support, please refer to the documentation included with your purchase or contact your retailer. Please have your model number (CONN873) and purchase date available when seeking support.