The Yolin YL81C-A is an intelligent LCD display designed for e-bikes, offering a comprehensive suite of functions to enhance the riding experience. Manufactured by Tianjin Yolin Technology Co., Ltd., this display serves as the central interface for monitoring and controlling various aspects of an e-bike's operation.
Function Description:
The YL81C-A display provides riders with essential information and control capabilities. Its primary functions include:
- Battery Level Indication: A clear visual representation of the remaining battery charge, allowing riders to manage their power consumption effectively. The indicator consists of four segments, with the last segment flashing to signal an undervoltage condition, prompting immediate charging.
- Assist Level Adjustment and Indication: Riders can easily select from three assist levels—ECO, MID, and HIGH—to adjust the motor's output power according to their riding preferences and terrain. The currently active assist level is clearly displayed on the screen.
- Speed Indication: Real-time speed is displayed in either kilometers per hour (km/h) or miles per hour (MPH), depending on the selected metric or imperial system.
- Distance Indication: The display tracks both trip distance (TRIP) and total odometer reading (ODO). Riders can toggle between these two displays using a dedicated button. The trip distance automatically resets to zero after reaching 9999 km.
- Error Code Indication: In the event of a fault within the e-bike's electronic control system, the display automatically shows an error code (e.g., E0**) in the distance area. These codes help in diagnosing and troubleshooting issues, with detailed definitions provided in Schedule 1 of the manual.
- Headlight Control: The display allows for convenient control of the e-bike's headlights. Pressing and holding the plus button turns on the headlights and dims the display backlight, while pressing and holding it again turns off the headlights and restores full backlight luminance.
- Power On/Off: The display and the e-bike's controller can be powered on or off by pressing and holding the power button. The display is designed to automatically power off if the e-bike is not used for more than 10 minutes, conserving battery life.
Important Technical Specifications:
The YL81C-A display is built to operate reliably within a range of environmental conditions and power requirements:
- Power Supply: Compatible with both 36V and 48V e-bike systems.
- Rated Working Current: 15mA, indicating efficient power consumption during normal operation.
- Maximum Working Current: 30mA, ensuring stable performance even under peak demand.
- Leakage Current at Power-off: Less than 1uA, minimizing battery drain when the display is off.
- Working Current at the Supply Controller End: 50mA.
- Working Temperature: Designed to function effectively in temperatures ranging from -20℃ to 60℃.
- Storage Temperature: Can be safely stored in temperatures from -30℃ to 70℃.
- Dimensions:
- Overall width: 70.0mm
- Overall height: 48.5mm
- Depth (from mounting point): 37.0mm
- Handlebar clamp diameter: Ø22.2mm
Usage Features:
The YL81C-A display is designed for intuitive and user-friendly operation:
- Simple Button Interface: Three clearly marked buttons (on/off, plus, and minus) provide straightforward control over all display functions.
- Automatic Power-off: To conserve battery, the display automatically shuts down after 10 minutes of inactivity.
- Metric and Imperial Units: Supports both km/h and MPH for speed, and km and miles for distance, catering to different regional preferences.
- Clear Display Layout: The functional area layout is organized for quick readability, with dedicated sections for speed, distance, assist level, and battery status.
- Parking Status Indication: When the e-bike is in parking status, 'P' is displayed in the speed area, and assist level adjustments are disabled.
- Wiring Sequence: The manual provides a detailed outgoing line connection diagram and a wiring sequence table for standard connectors, ensuring correct installation. The standard wiring includes Red (VCC) for power, Blue (Kp) for controller power control, Black (GND) for ground, Green (RX) for data receiving, and Yellow (TX) for data transmission. Some products may feature waterproof connectors, where internal wire colors are not visible.
Maintenance Features:
The YL81C-A display emphasizes durability and provides clear guidelines for troubleshooting and warranty:
- Quality Commitments: Yolin Technology offers a limited warranty for faults caused by product quality under normal use, valid for 12 months from delivery.
- Non-Warranty Scope: The warranty does not cover issues arising from:
- Opened enclosures.
- Damaged connectors.
- Scratched or damaged enclosures after delivery.
- Scratched or broken outgoing lines of the display.
- Faults or damage caused by force majeure (e.g., fires, earthquakes, lightning strikes).
- Expired warranty period.
- Error Code Diagnostics: The display's ability to show specific error codes (e.g., E001 for Controller Abnormality, E022 for Throttle Abnormality) facilitates quick identification of system malfunctions, enabling timely troubleshooting.
- Considerations for Use:
- Always ensure safe operation; avoid plugging or unplugging the display while it is powered on.
- Protect the display from physical impacts.
- Do not alter background parameter settings without proper knowledge, as this can impair normal riding functionality.
- If the display malfunctions, seek repair as soon as possible.
- Due to ongoing product upgrades, some features or displayed content may vary slightly from the manual, depending on the actual model purchased.
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