KT KT 36V/48V Controller & Display

KT Electric Bike Controller and Display User Manual

For 36V/48V 250W/350W/500W Brushless Gear and Gearless Motors

1. Уводзіны

This manual provides essential information for the installation, operation, and maintenance of your KT Electric Bike Controller and Display system. This system is designed for electric bicycles utilizing 36V or 48V power, and is compatible with 250W, 350W, and 500W brushless gear and gearless motors. It offers both Sine Wave and Dual Mode controller options, along with a choice of KT LCD8H, LCD3, or LED880 displays.

2. Інфармацыя па бяспецы

⚠️ Please be aware of potential fire risks and strictly adhere to the instruction manual for proper charging and storage of your e-bike battery and components.

  • Always ensure all connections are secure before operating the e-bike.
  • Avoid exposing the controller and display to excessive moisture or extreme temperatures.
  • Do not attempt to modify the controller or display, as this may void your warranty and create safety hazards.

3. Прадукт скончыўсяview

The KT system comprises a brushless motor controller and a choice of display units to provide comprehensive control and information for your electric bicycle.

3.1 Кампаненты

KT Controller and various display options (LCD8, LCD3, LED880)
Figure 1: KT Controller shown with various display options (LCD8, LCD3, LED880).
Close-up of KT-LCD8, KT-LCD3, and KT-LED880 displays
Малюнак 2: Буйны план view of the KT-LCD8, KT-LCD3, and KT-LED880 display units.

3.2 Controller Types

  • Sine Wave Controller: Operates smoothly and quietly, but requires a motor with a Hall sensor.
  • Dual Mode Controller: Offers flexibility, working with motors both with and without Hall sensors.
Sine wave controller unit
Малюнак 3: Выпample of a Sine Wave Controller.
Dual mode controller unit
Малюнак 4: Выпample of a Dual Mode Controller.

3.3 Display Features (KT LCD8H, LCD3, LED880)

The KT displays offer a range of functionalities to enhance your riding experience:

  1. Паказ дадзеных: Shows riding speed, single and cumulative mileage, riding time, power-assist gear, motor power and temperature, battery voltagстан электроннай і зарадкі, стан тармазоў і тэмпература навакольнага асяроддзя.
  2. Інтэлектуальная сіла: Provides an accurate reflection of battery charge and records power consumption to help estimate riding mileage.
  3. Налада кіёскаў: Allows multi-gear switching and automatic saving of the power-assist gear. It can restore the power-off stall state when turned on.
  4. Налада параметраў: Features user-adjustable parameters including motor settings, velocity measurement, speed-limit, power, power-assist control, minimum controller voltage, and maximum current.
  5. даныя View: Карыстальнікі могуць view and clear historical driving data, including single or cumulative riding time, mileage, maximum speed, and average speed.
  6. Vehicle Boosting: Includes a 6Km/h power-assisting function, indicated by a flashing boost logo, for easier vehicle maneuvering.
  7. Крэйсерская і пастаянная хуткасць: Allows setting and displaying cruise control to automatically maintain vehicle speed.
  8. Начное кіраванне: Features LCD backlit display and headlight switch control for visibility during night rides.
  9. Налада пароля: Provides a three-digit power-on password for security.
  10. Automatic Prompt: Displays different fault codes for vehicle failures, aiding in easy inspection and maintenance. Includes motor temperature display with ultra-temperature alarm and protection.
  11. Лічбавая сувязь: Utilizes five-line digital communication for good compatibility and interchangeability, allowing data exchange and parameter copying between different instruments.
  12. Sub-structure Design: The main unit and operation buttons of the meter use a sub-structure design for more reasonable and convenient operation.
  13. тtage Сумяшчальнасць: Automatically identifies and is compatible with 36V/48V supply voltagэс.
  14. дызайн: Features a black housing.
KT-LCD8 display showing a USB mobile charge port
Figure 5: KT-LCD8 display with an integrated USB mobile charge port.

Video 1: A 23-second product showcase of the KT brushless motor controller.

4. Тэхнічныя характарыстыкі

4.1 Controller Specifications

ПараметрКаштоўнасць
мадэльKT36/48VPRM-SJT02L (9 Mosfet)
Намінальны выпtageDC 36V / 48V
Намінальны ток12А
Нізкі абtagе АбаронаDC 30V / 40V ± 0.5V
Максімальны ток25А ± 1А
Набор хуткасці1-4.2В
Тормазны ўваходНізкі ўзровень
Памеры125 мм х 66 мм х 42 мм
Controller dimensions: 125mm x 66mm x 40mm
Figure 6: Controller dimensions for installation planning.

4.2 Тэхнічныя характарыстыкі дысплея

ПараметрКаштоўнасць
Даўжыня кабеля1.8м
Дастасавальна Voltage24V-36V-48V (automatically identified and compatible)
Колер корпусаЧорны

5. Настройка і ўстаноўка

Proper installation is crucial for the safe and efficient operation of your e-bike system. Please follow the wiring diagram carefully.

5.1 Заўвагі па сумяшчальнасці

  • The KT LCD/LED displays are designed to work exclusively with KT Controllers. They are not compatible with controllers from other brands.
  • The KT Controller is primarily designed for sensored brushless DC motors. While dual-mode controllers can operate sensorless, optimal performance is often achieved with sensored motors.

5.2 Правадныя злучэнні

Identify the various connection points on your controller and connect them to the corresponding components on your e-bike. Refer to the detailed wiring diagram below for specific connections.

Controller with labeled wires for LCD Display, PAS Sensor, Battery, Throttle, Headlight, Brake, and Motor
Figure 7: Controller with labeled wire connections.
Detailed wiring diagram for KT electric bike controller
Figure 8: Comprehensive wiring diagram for the KT controller system. Ensure all connections are made correctly according to this diagram.

Ключавыя моманты падключэння:

  • Правады акумулятара: Connect to your e-bike's battery (red for positive, black for negative).
  • Правады рухавіка: Connect to your e-bike's motor.
  • ВК-дысплей: Connect the display unit cable to the designated port.
  • Датчык PAS: Connect the Pedal Assist System sensor.
  • Дросель: Connect the throttle unit.
  • Тормаз: Connect the brake levers (low-level input).
  • Фара: If applicable, connect the headlight.

After making all connections, ensure they are secure and properly insulated to prevent short circuits.

6. Інструкцыя па эксплуатацыі

Once installed, your KT controller and display system is ready for use. The display provides an interface for monitoring and adjusting your e-bike's performance.

6.1 Уключэнне/выключэнне сілкавання

Press and hold the power button on your display unit to turn the system on or off.

6.2 Асноўныя функцыі дысплея

  • хуткасць: Бягучая хуткасць язды.
  • Прабег: Single trip distance (resettable) and total cumulative distance.
  • Узровень батарэі: Visual indicator of remaining battery charge.
  • Power-Assist Level: Shows the current level of motor assistance.

6.3 Пашыраныя функцыі

  • Changing Power-Assist Levels: Use the '+' and '-' buttons on the display to cycle through different power-assist levels.
  • Налады параметраў: Access the settings menu (refer to your specific display model's detailed instructions for navigation) to adjust motor parameters, speed limits, and other operational settings.
  • круіз-кантроль: Activate cruise control through the display settings to maintain a constant speed.
  • Кіраванне фарамі: Use the designated button on the display to turn the e-bike's headlight on or off (if connected).
  • USB Charging (LCD8H): The KT-LCD8H display features a USB port for charging mobile devices.

7. Тэхнічнае абслугоўванне

Regular maintenance helps ensure the longevity and optimal performance of your KT system.

  • Уборка: Keep the controller and display clean and free from dust and dirt. Use a soft, damp тканіну для чысткі. Пазбягайце агрэсіўных хімічных рэчываў або абразіўных матэрыялаў.
  • Сувязі: Перыядычна правярайце ўсе электрычныя злучэнні, каб пераканацца ў іх герметычнасці і адсутнасці карозіі.
  • Абарона ад вільгаці: While the components are designed for outdoor use, avoid prolonged exposure to heavy rain or submersion in water.
  • захоўванне: When not in use for extended periods, store the e-bike and its components in a dry, cool place.

8. Выпраўленне непаладак

If you encounter issues with your KT controller or display, refer to the following common problems and solutions.

8.1 Дыягнастычныя коды

The display system is equipped with an automatic fault prompt feature that shows different fault codes for vehicle failures. Consult your display's specific manual for a list of fault codes and their meanings to diagnose issues effectively.

8.2 Агульныя праблемы

  • Сістэма не ўключаецца:
    - Check battery connections and ensure the battery is charged.
    - Verify all main power cables to the controller are securely connected.
  • Display Not Working / No Information:
    - Ensure the display cable is firmly connected to the controller.
    - Check for any visible damage to the display cable or unit.
  • Рухавік не рэагуе:
    - Check motor phase wire connections and Hall sensor connections (if applicable).
    - Verify throttle and PAS sensor connections.
    - Ensure the correct controller type (Sine Wave or Dual Mode) is used for your motor (sensored/sensorless).
  • Няправільныя паказанні хуткасці/прабегу:
    - Check the speed sensor connection (if external).
    - Verify wheel circumference settings in the display parameters.

If you are unable to resolve an issue, please contact customer support for assistance.

9. Карыстальніцкія парады

Currently, there are no specific user tips from customer reviews or Q&A that are not already covered in the product features or troubleshooting sections. Always ensure your system is compatible with your motor type (sensored vs. sensorless) when choosing between sine wave and dual-mode controllers.

10. Гарантыя і падтрымка

For any warranty claims or technical support, please contact the seller or manufacturer directly. Ensure you have your purchase details and product model information readily available.


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