Yolin YL81F Electric Bike Display User Manual

Yolin YL81F Electric Bike Display

Product Information

• Product Name: Electric Bike Display
• Model Number: YL81F
• Manufacturer: Tianjin Yolin Technology Co. Ltd.

Table of Contents

1. Product Name and Model Number
2. Specification
3. Appearance and Size
4. Function Overview and Functional Areas
5. Routine Operation
6. Personalized Parameter Settings
7. Shortcut Operation
8. Quality Assurance and Warranty
9. Wire Connection Diagram
10. Precautions
11. Schedule 1: Error Code Definition
12. Schedule 2: Pedal Assist Level Default Ratio Value

Specification

• Power Supply: 24V/36V/48V
• Display Rated Current: 15mA
• Display Maximum Current: 30mA
• Shutdown Leakage Current: [No value provided]

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

Figure 3-2 Physical picture of the K5 control button

Figure 3-3 Physical picture of the K6 control button

Figure 3-4 90T-V Front View Dimension

Figure 3-5 90T-V Side View Dimension

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
• Error code indicator
• Motor power indicator (optional)
• USB connection indicator (optional)
• Cruise control indicator (optional)
• Bluetooth connection indicator (optional)
• Personalized parameter settings (e.g. wheel diameter, speed limit, rated voltage, PAS parameter, password, and controller current limit setting, etc.).
• Factory default parameter recovery function

Functional areas

Figure 4-1 YL90T-V functional area distribution interface

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 press  to switch between Trip Odometer(km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).

Figure 5-1 Display Interface Switching

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/h and the display shows . Release to stop the power output immediately and restore to the state before walk boost.

Figure 5-2 Helping to implement the display screen

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.

Figure 5-3 Backlight display interface

PAS level selection

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

Figure 5-4 PAS level display interface

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.

Empty power flashing

Figure 5-5 Battery Level Display Interface

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.

Figure 5-6 Error Code Display

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,

1. Press and hold simultaneously for more than 2 seconds to enter the personalized parameter setting interface.
2. Press  to toggle between the personalized parameter setting interface, and press to enter the parameter changing state.
3. Press to select the parameter, long pres for addition operation, long press for subtraction operation.
4. Press to save the parameter settings and return to the personalized parameter setting interface.
5. 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

Metric and Imperial setting

• 01P 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.

Figure 6-1 Metric and Imperial Units Setting Interface

Rated voltage setting

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

Figure 6-2 Rated voltage setting interface

PAS level setting

• 03P 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.to select the parameter and press to save the
• Press to enter the parameter changing state. Press the /parameter setting and return to the personalized parameter setting interface.

Figure 6-3 PAS level setting interface

PAS level ratio value setting

• To meet different requirements for users, the speed of every level can be adjusted by setting the PAS level ratio value. Please see the details from Schedule 2.
• For example, “45-55%” is the ratio range of PAS 1. The default ratio value of PAS 1 is 50% which is adjustable.
• Press the  to select the parameter and press to save the parameter and enter into the next level setting.
• Press again to save the settings and return to the personalized parameter setting interface.

Figure 6-4 PAS level ratio value setting interface

Wheel diameter setting

• 04P is the wheel diameter setting. The adjustable wheel diameter range is: 8~50inch.
• 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.

Figure 6-5 Wheel diameter setting interface

Number of speed sensor magnets setting
05P is the speed sensor magnet number setting. The adjustable speed sensor magnet number range is: 1 ~ 15 pcs （5S protocol）,1 ~ 63 pcs （KDS protocol）.

• 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.

Figure 6-6 Number of speed sensor magnets setting interface

Speed Limit Setting
06P is the speed limit setting. The adjustable speed limit range is: 1~60km/h or 1~41km/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 the parameter setting and return to the personalized parameter setting interface.

Figure 6-7 Speed limit setting interface

Controller Current Limit Setting
07P is the controller current limit setting. The adjustable range is: 1~31.5A.

• 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.

Figure 6-8 Controller current limit setting interface

PAS sensor setting
08P is the PAS sensor setting. 6.8.1 PAS sensor direction setting

• run is the PAS sensor direction setting. run-F is front direction and run-b is opposite direction.
• Press to enter the parameter changing state. Press the  to select the parameter and press to save the parameter setting and enter into 6.8.2 PAS sensor sensitivity setting interface.

Figure 6-9 PAS sensor direction setting interface

PAS sensor sensitivity setting
SCN is the PAS sensor sensitivity setting. The adjustable range is: 2-9. 2 is the highest level sensitivity while 9 is the lowest.

• Press the to select the parameter and press to save the parameter setting and enter into 6.8.3 PAS magnets number setting interface.

Figure 6-10 PAS sensor sensitivity setting interface

Number of pedal assist sensor magnets setting

• PAS is the pedal assist sensor magnets setting. The adjustable range is: 5-31.
• Press the  to select the parameter and press to save the parameter setting and to return to the personalized parameter setting interface.

Figure 6-11 Pedal assist sensor magnets setting

Throttle setting
09P is the throttle setting.

Throttle 6KM/H walk boost setting

• HL is the throttle 6KM/H walk boost setting. HL-Y is to enable the walk boost and the speed will maintain at 6KM/H when using throttle. HL-Y is to disable the walk boost and it can reach the max speed when using throttle.
• Press the to select the HL-Y and press to save the parameter setting and return to the personalized parameter setting interface.
• Press the to select the HL-N and press to save the parameter setting and enter into 6.9.2 Throttle Level setting interface or long press to return to the personalized parameter setting interface.

Figure 6-12 Throttle 6KM/H walk boost setting

Throttle level setting
HF is the throttle Level setting. HF-Y is to enable the throttle level. When using the throttle, the max speed depends on the throttle level. (0~3, 1~3, 0~5, 1~5, 1~7, 0~7, 0~9, 1~9) HF-N is to disable the throttle level. The speed is independent with the throttle level and can reach the rated max speed.

• Press the to select the parameter and press to save the parameter setting and enter into 6.8.3 PAS magnets number setting interface.

Figure 6-13 Throttle level setting

Power-on password setting
10P is the power-on password setting. The power-on password is not activated by default but users can activate it from setting PSd-y. The factory default password is 1212. Users can set other four-digit password. Please keep the password in mind after changing it, otherwise you will not be able to use the display.

• Press to enter the parameter changing state. Press thee to select the parameter. PS-y means the power-on password is activated while PS-n is off. Press to confirm the mode and enter the state of setting the four digits power-on password or exit to the personalized parameter setting interface.

Remember your password after changing it, or you will not be able to use the meter!

Figure 6-14 Password OFF interface
Figure 6-15 Password Activated interface

• In the password setting mode, the adjustable digit will flash. Press the   to select the parameter and press to save the numbers and go to the next digit setting. Long press to save the parameter setting and return to the personalized parameter setting interface after finish setting the four digits in turn.

Figure 6-16 Power-on password setting interface

Auto Sleep Time Setting
11P is the auto sleep time setting. To save the battery power and reach 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.

• In the password setting mode, the adjustable digit will flash. Press the   to select the parameter and press to save the numbers and go to the next digit setting. Long press to save the parameter setting and return to the personalized parameter setting interface after finish setting the four digits in turn.

Figure 6-17 Auto Power Off Time 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  press and hold and simultaneously for 2s to enter 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.

Figure 7-1 Restore Factory Default Settings Interface

Trip odometer reset operation
The display can record trip odometer and odometer. 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 press and  hold and simultaneously for 2s to reset the trip odometer. The main interface will flash during the reset process.

Figure 7-2 Trip Odometer Reset Interface

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

Controller connector Display connector (Female terminal) Display connector (Male terminal)
Figure 9-1 Wire Connection Diagram

Table 9-1 Standard connector wire sequence table

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 upgrade. Please refer to the physical products.

Schedule 1: Error Code Definition

YL-01, YL-02 Error codes

Error code| Definition| | Error code| Definition
E001| Controller failure| E004| Throttle failure
E002| Communication failure| E005| Brake failure
E003| Hall failure| E006| Motor phase failure
YL-05, KDS, YL-J Error codes
Error code| Definition| | Error code| Definition
E021| Current failure| | E024| Hall failure
E022| Throttle failure| | E025| Brake failure
E023| Motor phase failure| | E030| Communication failure

Schedule 2: Pedal Assist Level Default Ratio Value

Level      Level selection| ****

1

| ****

2

| ****

3

| ****

4

| ****

5

| ****

6

| ****

7

| ****

8

| ****

9

---|---|---|---|---|---|---|---|---|---
0-3/1-3| 50%| 74%| 92%| –| –| –| –| –| –
0-5/ 1-5| 50%| 61%| 73%| 85%| 96%| –| –| –| –
0-7/ 1-7| 40%| 50%| 60%| 70%| 80%| 90%| 96%| –| –
0-9/ 1-9| 25%| 34%| 43%| 52%| 61%| 70%| 79%| 88%| 96%

• Tel: 022-86838795 Fax: 022-86838795
• Email : store@yolintech.com
• Website: www.yolintech.com
• Address: Plant 52-1, Yougu Xinke Park, East of Jingfu Road, Pharmaceuticals and Medical Equipment Industrial Park, Beichen Economic Development Zone, Beichen District, Tianji

References

• Tianjin Yolin Technology Co.,Ltd

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