DAMSON YL81F Electric Bike Display User Manual

: August 24, 2024
: damson

Table of Contents

DAMSON YL81F Electric Bike Display
Product Information
Product Name and Model Number
Specification
Appearance and Size
Function overview and Functional areas
Routine operation
Personalized parameter settings
Shortcut operation
Quality Assurance and Warranty
Wire connection diagram
Precautions
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DAMSON YL81F Electric Bike Display

Specifications

Product Name: Smart LCD display for electric bicycle
Model Number: YL81F
Power Supply: 24V/36V/48V
Display Rated Current: 15mA
Display Maximum Current: 30mA
Shutdown Leakage Current: N/A

Product Information

Appearance and Size
The Smart LCD for electric bicycle, model YL81F, features a sleek and compact design suitable for mounting on the handlebars of electric bikes. The dimensions of the display are X inches in width, Y inches in height, and Z inches in depth.

Function Overview and Functional Areas
The display provides essential information such as speed, battery level, distance traveled, and assistance level. It typically consists of a main screen displaying speed and mode, with additional buttons or touch areas for adjusting settings.

Routine Operation

Press the power button to turn on the display.
Use the buttons to navigate through different display screens.
Monitor speed, battery level, and other relevant information while riding.
Adjust assistance level using the designated controls if available.
Turn off the display when not in use to conserve battery.

Personalized Parameter Settings
Users can customize various settings on the display to suit their preferences. This may include adjusting units of measurement, backlight brightness, language, and other display options.

Shortcut Operation
Shortcut operations allow users to quickly access commonly used functions without navigating through multiple screens. Refer to the user manual for specific shortcuts available on the YL81F model.

FAQ

Q: What should I do if the display shows an error code?
A: Refer to Schedule 1 and Schedule 2 in the user manual for error code definitions and troubleshooting steps.
Q: Can I use this display with any electric bike?
A: The YL81F display is compatible with most electric bicycles that operate within the specified power supply range. However, it is recommended to check compatibility with your bike manufacturer.
Q: How do I reset the personalized settings on the display?
A: To reset personalized settings, navigate to the factory reset option in the settings menu or refer to the user manual for specific instructions.

Electric Bike Display
User’s Manual
YL81F

Product Name and Model Number

Smart LCD display for electric bicycle; Model: YL81F.

Specification

24V/36V/48V power supply
Display rated current 15mA
Display maximum current 30mA
Shutdown leakage current <1uA
Supplied current to the controller 50mA
Operating temperature -20～60℃
Storage temperature -30 to 70°C

Appearance and Size

Figure 3-1 Physical picture of the YL81F display

Function overview and Functional areas

Functional Overview
The YL81F display offers a variety of features to suit your riding needs, including:

Battery level indicator
Pedal assist (PAS) level indicator
Speed (current speed, maximum speed, average speed)
Mileage display (single and total mileage)
Walk boost mode
Light ON/OFF（Not achieved）
Error code indicator
USB connection indicator (Not achieved)
Cruise control indicator (optional)
Bluetooth connection indicator (Not achieved)
Personalized parameter settings (e.g. wheel diameter, speed limit, battery power setting and PAS parameter setting,password setting, controller current limit setting, etc.).
Factory default parameter recovery function

Functional areas

Button definitions
The YL81F display is equipped with five buttons on the corresponding operating unit: power on/off , plus , minus , light and toggle .

Routine operation

Power on/off

Long press to power on/off the display. When the display is off, it will not use the battery power and the leakage current is less than 1uA.
The display will automatically shut off if it is not used for more than 10 minutes.

Display interface switching

When the display is powered on, it will show the Current Speed (km/h) and Trip Odometer (km) by default. Short
press to switch between Trip Odometer(km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h). Walk boost mode

Long Press and hold , the electric bicycle enters the walk boost mode. The electric bicycle will walk at a fixed
speed of 6 km per hour and the display shows state before walk boost. Release to stop the power output immediately and restore to the The walk boost mode can only be used when pushing the electric bicycle, please do not use it while riding

Turning on/off lights

Press the to make the controller turn on the lights and the display backlight becomes dim. Press again to make the controller turn off the lights and the backlight restore brightness. PAS level selection

Press / to switch PAS level of the electric bicycle, thus changing the motor output power. Battery level display

The Battery level is shown as 5 bars. When the battery is full charged, all of the 5 bars lighten up. When the battery is fully depleted, the bar will begin to flash, warning the user to charge the battery as soon as possible.

Error code display

If there is a fault occurs in the electronic system of the electric bicycle, the display will automatically show an error code, see Schedule 1 for a detailed definition of the error code. When the error code appears on the display, please troubleshoot the problem in time, the electric bicycle will not be able to drive normally after the problem occurs.

Personalized parameter settings

Each setting needs to be done with the bicycle stationary. The personalized parameter setting procedure is as follows: When the display is ON and the speed shows 0,

Press and hold simultaneously for more than 2 seconds to enter the personalized parameter setting interface.

Press / to toggle between the personalized parameter setting interface, and press to enter the parameter changing state.

Press / to select the parameter, long pres for addition operation, long press for subtraction operation.

Press to save the parameter settings and return to the personalized parameter setting interface.

Long Press to save the parameter settings and exit the personalized parameter setting interface

The following options are available on the personalized parameter setting interface:

Backlight luminance setting

01P is the backlight luminance setting. Parameters 01, 02 and 03 are available, which represent the backlight luminance, 01 for the minimum luminance, 02 for the standard luminance and 03 for the maximum luminance.
Press the button to enter the parameter modification interface. Press the button / for parameter selection.
Press the button to save the parameter and return to the selection interface of general setting options.

Metric and Imperial setting

02P is the metric and imperial setting, 00 for metric and 01 for imperial.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. Rated voltage setting

03P is the rated voltage setting. The available rated voltage range is: 24V, 36V, 48V.
Press to enter the parameter changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface.

Auto Sleep Time Setting
04P is the auto sleep time setting. To save the battery power and reach a higher range, this display will be turned off after it has not been used for a time. The adjustable range is: 1~60min, 00 means no auto shutdown. The factory default setting is 10 minutes.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. PAS level setting

05P is the Pedal assist level setting. The available PAS level settings are 0~3, 1~3, 0~5, 1~5, 1~7, 0~7, 0~9, 1~9.
Press to enter the parameter changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. Wheel diameter setting

06P is the wheel diameter setting. The adjustable wheel diameter range is: 1~50 inch.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface.

Number of speed sensor magnets setting

07P is the speed sensor magnet number setting. The adjustable speed sensor magnet number range is: 1 ~ 255 pcs.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface.

Speed Limit Setting

08P is the speed limit setting. The adjustable speed limit range is: 1~100km/h. (The maximum adjustable speed limit varies by different protocols).
Press to enter the parameter changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface. Start-up setting

09P is the start-up setting. The display can choose the following start modes: 00→zero start, 01→non-zero start.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface. Drive mode setting

10P is the drive mode setting. The available drive modes are: 00→Pedal assist only, 01→Electric only, 02→Both Pedal assist and electric.
Press to enter the parameter-changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface.

Pedal assist sensitivity setting

11P is the pedal assist sensitivity setting. When set to higher numbers, it will take more crank rotations to activate the motor. On lower numbers, it will take little crank rotation to activate the motor. The adjustable range is: 1~24.
Press to enter the parameter changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface. Pedal assist strength setting

12P is the Pedal assist strength setting. The Pedal assist strength is the relative strength of the PWM signal from the controller when start to activate pedal assist. The adjustable range is 0 ~ 5. 0 is the weakest strength and 5 is the strongest.
Press to enter the parameter changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface. Number of pedal assist sensor magnets setting

13P is the number of pedal assist sensor magnets setting. The adjustable range: 5, 8, 12 pcs.
Press to enter the parameter changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. Controller Current Limit Setting

14P is the controller current limit setting. The adjustable range is: 1~50A.
Press to enter the parameter changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. Battery under voltage value setting

15P is the battery under voltage setting. The value can be adjusted based on the current rated voltage.
Press to enter the parameter changing state. Press the / to select the parameter and press to save the parameter setting and return to the personalized parameter setting interface. ODO resets setting

16P is the ODO resets setting. The display can choose the following: 00→non reset, 01→reset.
Press to enter the parameter changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface. Display speed ratio

17P Select display speed ratio, 50%-150% range adjustable.
Press to enter the parameter changing state. Press the / to select the parameter and press to save theparameter setting and return to the personalized parameter setting interface.

Shortcut operation

Restore factory settings operation

dEF is the restore factory default parameter settings. dEF-Y is to restore default settings, and dEF-N is not to restore.
Enter into the main setting interface and keep the speed at 0, press and hold and simultaneously for 2s toe nter the restore factory default setting interface. Pressing / to toggle to dEF-Y. Then after pressing to confirm, the display will show dEF-0 for a few seconds and then automatically start to restore the factory default settings. The display will automatically exit to setting interface after the restoration. Trip odometer reset operation

The display can record trip odometer and odometer. The trip odometer is not automatically reset after turning off. The trip odometer needs to be reset manually.
Enter into the main setting interface and keep the speed at 0, press and hold and simultaneously for 2s to reset the trip odometer. The main interface will flash during the reset process.

Quality Assurance and Warranty

Warranty info

Yolin will offer a limited warranty for any failure caused by the product defects under normal use during the warranty period.
The product is warranted for 12 months from the date out of factory.

Warranty does not cover

The shell is opened.
The connector is damaged.
Scratches on the appearance after the product is out of factory.
Scratched or broken wires
Failure or damage caused by force majeure (e.g. fire, earthquake, etc.) or natural disaster (e.g. lightning strike,etc.)
Out of warranty period.

Wire connection diagram

Standard wire connection sequence

Table 9-1 Standard connector wire sequence table

Standard Wire Sequence	Standard wire color	Function
1	Red (VCC)	Display power wire
2	Blue (Kp)	Controller power wire
3	Black (GND)	Display ground wire
4	Green (RX)	Display data reception wire
5	Yellow (TX)	Display data transmit wire

Some models are equipped with waterproof connectors and the color inside wires can not be seen.

Precautions

Pay attention to all the general operating when using the products and do not plug and unplug the display while it is powered on.

Avoid bumping the display as much as possible.
Please do not change the parameter settings at will, otherwise normal riding cannot be guaranteed.
If display does not work properly, please send it to the repair center as soon as possible.
There may be differences between the physical products and this manual due to normal upgrades. Please refer to the physical products.

Schedule 1: Error Code Definition