1. Вступ
The Engwe YL81F is an intelligent liquid crystal display meter designed for electric bicycles. It provides essential riding information and allows for personalized parameter settings to enhance your e-bike experience. This manual will guide you through the setup, operation, and maintenance of your YL81F display.

2. Налаштування та встановлення
2.1 Important Customization Note
Before or after purchase, it is crucial to contact customer service and provide the serial number located on the back of your display. The YL81F display utilizes various communication protocols, and providing your serial number ensures that our engineers can customize a new, plug-and-play display specifically for your e-bike, guaranteeing compatibility and optimal performance.

2.2 Монтаж дисплея
The YL81F display is designed for handlebar mounting. Ensure your handlebar has a diameter of approximately 31.8mm for a secure fit. Use the provided clamps to attach the display firmly to your e-bike's handlebar in a position that offers clear visibility while riding.

2.3 Підключення дисплея
The display connects to your e-bike's controller via a 5-pin waterproof connector. Carefully align the pins and push the connector firmly until it clicks into place. Ensure the connection is secure to prevent water ingress and ensure reliable operation.


3. Інструкція з експлуатації
3.1 Інтерфейс дисплеяview
The YL81F display provides a clear overview of your e-bike's status and riding data. Refer to the diagram below for an explanation of each functional area:

Key indicators include:
- Рівень заряду батареї: Показує залишок заряду батареї.
- Код помилки: Displays diagnostic codes if an issue occurs.
- Поточна швидкість: Real-time riding speed.
- Підвищення швидкості ходьби: Indicates when walk assist mode is active.
- Подорожний одометр: Distance covered in the current trip.
- Одометр: Total distance covered by the e-bike.
- Максимальна швидкість: Highest speed achieved during the current trip.
- Середня швидкість: Average speed during the current trip.
- Увімкнення/вимкнення світла: Indicates headlight status.
- Одиниця швидкості: Displays speed in KM/H or MPH.
- Круїз: Indicates when cruise control is active (if enabled).
- Рівень PAS: Показує поточний рівень системи допомоги при педалях.
- Value and Unit: Displays various values and their corresponding units (e.g., kcal, Wh/Ah, mile/h).
3.2 Basic Controls (K5 Buttons)
The display is operated using the K5 buttons, typically located on a remote control unit attached to the handlebar. These buttons allow you to navigate menus and adjust settings.
3.3 Персоналізовані налаштування параметрів
To enter the personalization parameter setting interface, press and hold the '+' and '-' keys simultaneously for more than 2 seconds. Use the '+' and '-' buttons to navigate through the options and the power button (or a dedicated 'Set' button) to confirm selections.
- 01P Backlight Brightness: Adjusts display brightness (01 = darkest, 03 = brightest).
- 02P Metric/Imperial Unit: Selects measurement units (00 = metric, 01 = imperial).
- 03P Rated Voltage: Sets the rated voltage (24В, 36В, 48В, 52В, 60В).
- 04P Auto Power Off Time: Sets inactivity time before auto-shutdown (00-60 minutes; 00 disables auto-off). Factory default is 10 minutes.
- 05P Power Assist Gear Range: Configures available PAS levels (e.g., 0-3, 1-3, 0-5, 1-5, 0-9, 1-9 gears).
- 06P Wheel Diameter: Sets wheel diameter (1-50 inches).
- 07P Speed Sensor Magnet Number: Configures the number of magnets on the speed sensor (1-255 pcs).
- 08P Speed Limit: Adjusts the maximum speed limit (1-62 mile/h or 1-100 km/h). Note: Maximum adjustable speed limit may vary with different communication protocols.
- 09P Start Mode: Selects between zero start (00) or non-zero start (01).
- 10P Drive Mode: Chooses drive modes: 00 (Assisted drive only), 01 (Electric drive only), 02 (Assisted and electric drive coexist).
- 11P Booster Sensitivity: Adjusts how sensitively the controller detects booster sensor magnets to start the motor.
- 12P Boost Start Strength: Sets the relative strength of the PWM signal output from the controller when Boost starts (0-5, 0 being weakest, 5 strongest).
- 13P Booster Sensor Magnets: Sets the number of magnets for the booster sensor (5-12).
- 14P Controller Current Limit: Adjusts the controller's current limit (1-50A).
- 15P Battery Undervoltage: Sets the battery undervoltage value based on the rated voltage.
- 16P ODO Zero Setting: Resets total mileage (00 = no reset, 01 = total mileage reset).
- 17P Controller Cruise Setting: Enables or disables cruise control (00 = disable, 01 = enable).
- 18P Pushbutton 6km Push: Enables or disables the 6km/h walk assist function (00 = disable, 01 = enable).
4. Технічне обслуговування
4.1 Очищення
The YL81F display has an IPX6 waterproof rating, meaning it is protected against high-pressure water jets from any direction. You can clean the display with a damp тканиною. Уникайте використання агресивних хімічних речовин або абразивних матеріалів, які можуть пошкодити екран абоasing.
4.2 Перевірки з'єднань
Periodically check the 5-pin waterproof connector to ensure it remains securely fastened and free from dirt or corrosion. A loose connection can lead to intermittent display functionality.
4.3 Зберігання
When not in use for extended periods, store the e-bike and display in a location where the temperature remains within the storage temperature range of -30℃ to 70℃ (-22℉ to 158℉).
5. Вирішення проблем
5.1 Дисплей не вмикається
- Check all cable connections, especially the 5-pin connector, to ensure they are secure.
- Verify that the e-bike battery is charged and properly connected.
- If the display has an auto power-off feature enabled (04P setting), ensure you are not exceeding the set inactivity time.
5.2 Error Codes Displayed
If an error code appears on the display, note the code and refer to your e-bike's main controller manual or contact customer support for specific diagnostic information. Error codes indicate issues with various e-bike components.
5.3 Incorrect Speed or Mileage Readings
- Check the wheel diameter setting (06P) to ensure it matches your e-bike's wheel size.
- Verify the speed sensor magnet number setting (07P) is correct.
- Inspect the speed sensor for damage or misalignment.
5.4 Unexpected Motor Behavior (e.g., no assist, sudden starts)
- Review the 'Start Mode' (09P) setting (Zero start vs. Non-zero start).
- Check the 'Drive Mode' (10P) setting to ensure it aligns with your desired riding style (Assisted, Electric, or Coexist).
- Adjust 'Booster Sensitivity' (11P) and 'Boost Start Strength' (12P) if the assist feels too weak or too strong at startup.
6. Технічні характеристики
| Особливість | Специфікація |
|---|---|
| Номер моделі | YL81F |
| Тип | Дисплей |
| Розмір продукту | 59.5 x 97 x 71.2 мм |
| Кнопки продукту | K5 |
| Product Connectors | 5pin waterproof connector |
| Рейтинг водонепроникності | IPX6 |
| Вага продукту | 150г |
| Відповідні бренди | Engwe |
| Джерело живлення | 48V (Compatible with 36V, 52V systems via setting) |
| Meter Rated Working Current | 15 мА |
| Максимальний робочий струм | 30 мА |
| Струм витоку відключення | <1uA |
| Supply Working Current to Controller | 50 мА |
| Робоча температура | -10℉ до 60℃ (14℉ до 140℉) |
| Температура зберігання | Від -30 до 70 ℃ (-22 -158 до XNUMX ℉) |
7. Гарантія та підтримка
For any issues, technical assistance, or warranty claims, please contact the seller or Engwe customer service. Remember to provide your display's serial number for efficient support, especially if you encounter compatibility issues or require a replacement.
8. Поради користувача
- Serial Number is Key: Always keep a record of your display's serial number. This is vital for customization and support, as mentioned in the setup section.
- Customize for Your Ride: Take the time to explore the personalized parameter settings (01P-18P). Adjusting wheel diameter, speed limit, and drive mode can significantly improve your riding experience and ensure accurate data.
- Регулярно перевіряйте підключення: A quick check of the 5-pin connector before each ride can prevent unexpected disconnections and ensure consistent performance.
- Understand Error Codes: If an error code appears, don't ignore it. It's the display's way of telling you something needs attention. Consult your e-bike's manual or contact support.





