Ebikeling NC-81F Electric Bike Display User Manual

1. Product Name and Model Number

Smart LCD display for electric bicycle; Model: NC-81F.

2. Specification

• 36V/48V/52V power supply
• Display rated current 15mA
• Display maximum current 30mA
• Shutdown leakage current <1uA
• Supplied current to the controller 50mA
• Operating temperature: -20 ~ 60 °C
• Storage temperature: -30 to 70°C

3. Appearance and Size

The NC-81F display is a smart LCD unit for electric bicycles. It is accompanied by control buttons.

Components:

• NC-81F Display
• K5 Control Button
• K6 Control Button

Dimensions:

Front View: 59.5mm width, 86.0mm height.

Side View: 71.2mm width, with a mounting diameter of 31.8mm.

4. Function Overview and Functional Areas

4.1 Functional Overview

The NC-81F display offers a variety of features to suit riding needs, including:

• Battery level indicator
• Pedal assist (PAS) level indicator
• Speed display (current speed, maximum speed, average speed)
• Mileage display (single and total mileage)
• Walk boost mode
• Light ON/OFF control
• Error code indicator
• Cruise control indicator (optional)
• Bluetooth connection indicator (optional)
• Personalized parameter settings (e.g., wheel diameter, speed limit, rated voltage, PAS parameters)
• Factory default parameter recovery function

4.2 Functional Areas

The display interface shows various information:

• Battery Level: Indicated by bars.
• Error Code: Displays error messages when faults occur.
• Current Speed: Shows the current speed in KM/H or MPH.
• Walk Boost: Icon indicating walk assist mode.
• Trip Odometer, Odometer, Max Speed, Average Speed: Displays various distance and speed metrics.
• Light On/Off: Icon for controlling lights.
• Speed Unit: KM/H or MPH.
• Cruise: Icon for cruise control.
• PAS Level: Shows the current Pedal Assist System level.
• Value and Unit: Displays values like mileage, power consumption (kcal, Wh/Ah), and units.

4.3 Button Definitions

The NC-81F display is equipped with five buttons on the operating unit:

• Power On/Off: ?
• Plus: ➕
• Minus: ➖
• Light: ?
• Toggle: ℹ️

5. Routine Operations

5.1 Power On/Off

Long press the power button (?) to turn the display on or off. When off, the display minimizes battery drain with leakage current less than 1uA. The display automatically shuts off after 10 minutes of inactivity.

5.2 Display Interface Switching

When powered on, the display defaults to Current Speed (km/h) and Trip Odometer (km). Short press the Toggle button (ℹ️) to cycle through Trip Odometer (km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).

5.3 Walk Boost Mode and Cruise Enable Setting

Walk Boost Mode: Long press the power button (?) to enter walk boost mode. The electric bicycle moves at a fixed speed of 6 km/h. Release the button (or press the brake) to stop power output and return to the previous state. This mode is intended for pushing the bicycle, not for riding.

Cruise Control: When the bicycle is at a stable speed, long press the power button (?) to enter cruise state. The bicycle maintains the current speed. Press the power button (?) again, turn the knob, or apply the brake to exit cruise state.

5.4 Turning On/Off Lights

Press the Light button (?) to turn on the lights and dim the display backlight. Press it again to turn off the lights and restore normal backlight brightness.

6. Personalized Parameter Settings

All settings require the bicycle to be stationary. Operations must be completed within 8 seconds before starting the machine.

General Setting Procedure:

1. When the display is ON and speed is 0, press and hold the Plus (➕) and Minus (➖) buttons simultaneously for over 2 seconds to enter the personalized parameter setting interface.
2. Press Plus (➕) or Minus (➖) to toggle between different parameter setting interfaces, then press Toggle (ℹ️) to enter the parameter changing state.
3. Press Plus (➕) or Minus (➖) to select the parameter value. Long press Plus (➕) for increment, long press Minus (➖) for decrement.
4. Press Toggle (ℹ️) to save the parameter settings and return to the personalized parameter setting interface.
5. Long press Toggle (ℹ️) to save all parameter settings and exit the personalized parameter setting interface.

Available Settings:

• 6.1 Backlight Luminance Setting (01P): Adjusts backlight brightness. Parameters 01 (minimum), 02 (standard), 03 (maximum).
• 6.2 Metric and Imperial Setting (02P): Sets units. 00 for metric (km/h), 01 for imperial (mph).
• 6.3 Rated Voltage Setting (03P): Sets the system voltage. Available options: 36V, 48V, 52V.
• 6.4 Auto Sleep Time Setting (04P): Configures auto-shutdown time to save battery. Range: 1-60 minutes. 00 disables auto-shutdown. Factory default is 10 minutes.
• 6.5 PAS Level Setting (05P): Sets the available PAS levels. Options: 0~3, 0~5, 0~9.
• 6.6 Wheel Diameter Setting (06P): Sets the wheel diameter. Range: 1~50 inches.
• 6.7 Number of Speed Sensor Magnets Setting (07P): Sets the number of magnets on the speed sensor. Range: 1 ~ 255 pcs.
• 6.8 Speed Limit Setting (08P): Sets the maximum speed limit. Range: 1~100 km/h. (Note: Maximum limit may vary by protocol).
• 6.9 Start-up Setting (09P): Configures start mode. 00 = zero start, 01 = non-zero start.
• 6.10 Drive Mode Setting (10P): Selects the drive mode. 00 = Pedal assist only, 01 = Electric only, 02 = Both Pedal assist and electric.
• 6.11 Pedal Assist Sensitivity Setting (11P): Adjusts how easily the motor engages with pedaling. Higher numbers require more rotations. Range: 1~24.
• 6.12 Pedal Assist Strength Setting (12P): Sets the strength of pedal assist. Range: 0 (weakest) to 5 (strongest).
• 6.13 Number of pedal assist sensor magnets setting (13P): Sets the number of magnets for the pedal assist sensor. Range: 5-12 pcs.
• 6.14 Controller Current Limit Setting (14P): Sets the current limit for the controller. Range: 1~50A.
• 6.15 ODO Resets Setting (15P): Configures ODO reset behavior. 00 = non-reset, 01 = reset.
• 6.16 Power-on Password Setting (16P): Activates and sets a power-on password. Default is 'PSd-n' (off). To activate, set to 'PSd-y'. Factory default password is 1212. Users can set a four-digit password. Caution: Keep the password in mind after changing it.

7. Shortcut Operation

7.1 Restore Factory Settings Operation

To restore factory default parameter settings:

• Enter the main setting interface, ensure speed is 0.
• Press and hold the Power (?) and Plus (➕) buttons simultaneously for 2 seconds to enter the restore factory default setting interface.
• Press Plus (➕) or Minus (➖) to toggle between 'dEF-Y' (restore) and 'dEF-N' (do not restore).
• Press Toggle (ℹ️) to confirm. The display will show 'dEF-0' briefly, then automatically restore settings. The display will exit to the setting interface after restoration.

7.2 Trip Odometer Reset Operation

The trip odometer is not automatically reset when the display is turned off and needs manual resetting.

• Enter the main setting interface, ensure speed is 0.
• Press and hold the Power (?) and Toggle (ℹ️) buttons simultaneously for 2 seconds to reset the trip odometer. The main interface will flash during the reset process.

8. Quality Assurance and Warranty

8.1 Warranty Info

Yolin offers a limited warranty for product defects under normal use during the warranty period. The product is warranted for 12 months from the date of factory shipment.

8.2 Warranty Does Not Cover:

• Opened shells.
• Damaged connectors.
• Scratches on the product appearance after factory delivery.
• Scratched or broken wires.
• Failure or damage caused by force majeure (e.g., fire, earthquake) or natural disasters (e.g., lightning strike).
• Damage incurred outside the warranty period.

9. Wire Connection Diagram

9.1 Standard Wire Connection Sequence

The display connects to the controller and other components via specific wire sequences.

Controller Connector: Typically has 5 wires.

Display Connectors: Shown as female and male terminals, with pins numbered 1 through 5.

Note: Some models may have waterproof connectors where internal wire colors are not visible.

10. Precautions

• Pay attention to general operating procedures. Do not plug or unplug the display while it is powered on.
• Avoid bumping the display.
• Do not change parameter settings arbitrarily, as it may affect normal riding performance.
• If the display malfunctions, send it to a repair center promptly.
• There may be minor differences between physical products and this manual due to normal upgrades. Refer to the physical products for exact specifications.

11. Schedule 1: Error Code Definition

The following error codes may appear on the display: