The Yolin YL81F is a smart LCD display designed for electric bicycles, offering a comprehensive range of features to enhance the riding experience. It serves as the central interface for monitoring and controlling various aspects of an e-bike, providing riders with essential information and customization options.
Function Description
The primary function of the YL81F display is to provide real-time information about the electric bicycle's operation and allow for personalized parameter settings. It acts as a dashboard, showing critical data such as battery level, current speed, pedal assist (PAS) level, and mileage. Beyond basic monitoring, it enables riders to adjust various settings to suit their preferences and riding conditions.
Key functional areas include:
- Battery Level Indicator: Displays the remaining battery charge, typically using a 5-bar graphic. It also provides a low battery warning by flashing the last bar.
- Pedal Assist (PAS) Level Indicator: Shows the current level of pedal assistance, allowing riders to easily see and adjust the motor's power output.
- Speed Display: Provides current speed, maximum speed, and average speed in either kilometers per hour (KM/H) or miles per hour (MPH).
- Mileage Display: Tracks both single trip odometer (TRIP) and total odometer (ODO) readings.
- Walk Boost Mode: A special mode that provides a fixed speed of 6 km/h, useful for pushing the bicycle.
- Light ON/OFF Control: Allows the rider to turn the bicycle's lights on or off, which also dims or restores the display backlight.
- Error Code Indicator: Displays specific error codes if a fault occurs in the electronic system, aiding in troubleshooting.
- Optional Indicators: Depending on the e-bike's configuration, it can also show motor power, USB connection status, cruise control activation, and Bluetooth connection status.
- Personalized Parameter Settings: This is a significant feature, allowing users to customize various operational parameters of the e-bike, such as wheel diameter, speed limit, rated voltage, PAS parameters, throttle settings, and even a power-on password.
- Factory Default Parameter Recovery: Provides an option to restore all personalized settings to their original factory defaults.
Important Technical Specifications
The YL81F display is built to be compatible with common e-bike power systems and operate reliably across a range of environmental conditions.
- Power Supply: Compatible with 24V, 36V, and 48V power systems.
- Display Rated Current: 15mA.
- Display Maximum Current: 30mA.
- Shutdown Leakage Current: Less than 1uA, ensuring minimal battery drain when the display is off.
- Supplied Current to Controller: 50mA.
- Operating Temperature: -20℃ to 60℃.
- Storage Temperature: -30℃ to 70℃.
- Dimensions: Approximately 59.5mm (width) x 86.0mm (height) x 71.2mm (depth, including mounting bracket). The mounting bracket accommodates a 31.8mm handlebar diameter.
- Button Configuration: Equipped with five buttons on a separate operating unit: Power on/off, Plus (+), Minus (-), Light, and Toggle (i).
Usage Features
The YL81F display is designed for intuitive and flexible use, catering to both routine operations and advanced customization.
- Power On/Off: A long press of the power button turns the display on or off. The display automatically shuts off after 10 minutes of inactivity to conserve battery.
- Interface Switching: Short pressing the toggle button (i) allows riders to cycle through different display interfaces, including Trip Odometer, Odometer, Maximum Speed, and Average Speed.
- PAS Level Selection: The Plus (+) and Minus (-) buttons are used to switch between different PAS levels, thereby adjusting the motor's power output.
- Walk Boost Mode Activation: A long press of the Minus (-) button activates the walk boost mode, providing a steady 6 km/h assistance. Releasing the button disengages the mode.
- Light Control: Pressing the Light button turns the bicycle lights on/off and adjusts the display backlight brightness accordingly.
- Personalized Parameter Settings: This advanced feature allows deep customization. To enter the setting interface, the display must be ON and the speed must be 0. A simultaneous long press of the Plus (+) and Minus (-) buttons initiates the setting mode. Users can navigate through settings using the Plus (+) and Minus (-) buttons, enter specific parameter adjustment modes with the Toggle (i) button, and save changes by long pressing the Toggle (i) button.
- Metric/Imperial Setting (01P): Allows selection between metric (00) and imperial (01) units for speed and distance.
- Rated Voltage Setting (02P): Configures the display for 24V, 36V, or 48V systems.
- PAS Level Setting (03P): Defines the number of available PAS levels (e.g., 0-3, 0-5, 0-9).
- PAS Level Ratio Value Setting (03P.1): Further customizes the power output percentage for each PAS level, offering fine-tuned control over assistance.
- Wheel Diameter Setting (04P): Adjustable from 8 to 50 inches to ensure accurate speed and distance readings.
- Speed Sensor Magnets Setting (05P): Configures the number of magnets on the speed sensor (1-15 pcs for 5S protocol, 1-63 pcs for KDS protocol).
- Speed Limit Setting (06P): Sets the maximum speed limit for the e-bike (e.g., 1-60 km/h or 1-41 km/h, depending on protocol).
- Controller Current Limit Setting (07P): Adjusts the maximum current supplied by the controller (1-31.5A).
- PAS Sensor Setting (08P): Includes settings for PAS sensor direction (run-F for front, run-b for opposite) and sensitivity (SCN, 2-9, where 2 is highest sensitivity).
- Pedal Assist Sensor Magnets Setting (08P.3): Configures the number of magnets on the pedal assist sensor (5-31).
- Throttle Setting (09P):
- Throttle 6KM/H Walk Boost Setting (HL): Enables (HL-Y) or disables (HL-N) the 6KM/H walk boost function when using the throttle. If disabled, the throttle can reach max speed.
- Throttle Level Setting (HF): Enables (HF-Y) or disables (HF-N) throttle level dependence. If enabled, max speed depends on throttle level; if disabled, speed is independent of throttle level and can reach rated max speed.
- Power-on Password Setting (10P): Allows users to activate a four-digit power-on password (default 1212) for security.
- Auto Sleep Time Setting (11P): Configures the inactivity duration (1-60 minutes, 00 for no auto shutdown) after which the display automatically turns off.
- Trip Odometer Reset: While the display is ON and speed is 0, a simultaneous long press of the Plus (+) and Light buttons resets the trip odometer.
- Restore Factory Settings: While the display is ON and speed is 0, a simultaneous long press of the Minus (-) and Light buttons enters the factory reset interface. Selecting "dEF-Y" and confirming will restore default settings.
Maintenance Features
The YL81F manual provides guidelines for proper care and troubleshooting, although it does not detail specific maintenance procedures for the display itself beyond basic precautions.
- Error Code Definition: A detailed schedule of error codes (E001-E006 for YL-01/YL-02, E021-E030 for YL-05/KDS/YL-J) helps users identify and troubleshoot faults in the e-bike's electronic system. This is a crucial maintenance aid, allowing for quicker diagnosis of issues like controller failure, throttle failure, brake failure, or communication failure.
- Precautions:
- Avoid plugging or unplugging the display while it is powered on.
- Protect the display from physical impact.
- Refrain from changing parameter settings arbitrarily, as this can affect normal riding.
- If the display malfunctions, it should be sent to a repair center.
- Warranty Information: Yolin offers a 12-month limited warranty from the date of factory shipment for failures due to product defects under normal use.
- Warranty Exclusions: The warranty does not cover:
- Opened display shell.
- Damaged connectors.
- Scratches on the appearance after leaving the factory.
- Scratched or broken wires.
- Failure or damage caused by force majeure (e.g., fire, earthquake, lightning strike, natural disaster).
- Issues occurring outside the warranty period.
The YL81F display is a robust and versatile component for electric bicycles, offering a blend of essential monitoring and extensive customization capabilities to enhance the user's riding experience and facilitate troubleshooting.
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