Yolin YL91F-E Electric Bike Display User Manual

Electric Bike Display
User’s Manual
YL91F-E
Tianjin Yolin Technology Co. Ltd.

Product Name and Model Number

Smart LCD display for electric bicycle; Model: YL91F-E.

Specification

• 48V power supply
• Display rated current 15mA
• Display maximum current 30mA
• Shutdown leakage current <1uA
• Supplied current to the controller 50mA
• Operating temperature -10～60℃
• Storage temperature -30 to 70°C

Appearance and Size

Figure 3-1 Physical picture of the YL91F-E display

Figure 3-2 Physical picture of the K5 control button

Figure 3-3 91F-E Front View Dimension| Figure 3-4 91F-E Side View Dimension

Function overview and Functional areas

4.1 Functional overview
The YL91F-E 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
• Cruise control indicator (optional)
• Personalized parameter settings (e.g. wheel diameter, speed limit, etc.).
• Factory default parameter recovery function

4.2 Functional areas

Figure 4-1 YL91F-E functional area distribution interface

4.3 Button definitions

The YL91F-E display is equipped with five buttons on the corresponding operating unit: power on/off , plus , minus , light and toggle .

Routine operation

5.1 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.

5.2 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 switched cyclically between Trip Odometer(km), Odometer (km), Maximum Speed (km/h), and Average Speed (km/h).

Figure 5-1 Display Interface Switching

5.3 Walk boost mode
Long Press and hold , the electric bicycle enters the walk boost mode. Your e-bike will run at the constant speed at the promoted speed 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.

5.4 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

5.5 PAS level selection
Press / to switch PAS level of electric bicycle, thus changing the motor output power. (The following pictures are only for illustration of different speeds in different gears. The specific speed is subject to the actual product)

Figure 5-4 PAS level display interface

5.6 Quick switching operation of dual drive mode
Long press and hold the on the main interface of the display, three driving modes can be quickly cycled for switching,when switching, The left side of the display indicates the current switching status. (When in rear wheel drive, the stars inside the rear tires always light up, when in front wheel drive, the stars inside the front tires always light up, and when in full-time dual drive, the stars inside the front and rear tires flash simultaneously)

Figure 5-5 Drive mode display interface

5.7 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.

Figure 5-6 Battery Level Display Interface

5.8 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 5-7 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 press 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:

6.1 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

6.2 Rated voltage setting
02P is the rated voltage setting. The available rated voltage range is: 36V, 48V, 60V.
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 6-2 Rated voltage setting interface

6.3 PAS level setting
03P is the Pedal assist (PAS) level setting. The available Pedal assist level settings are: 0~3, 1~3, 0~5, 1~5.
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 6-3 PAS level setting interface

6.4 Wheel diameter setting
04P is the wheel diameter setting. The adjustable wheel diameter range is: 8~32inch.
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 6-4 Wheel diameter setting interface

6.5 Number of speed sensor magnets setting
05P 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.

Figure 6-5 Number of speed sensor magnets setting interface

6.6 Speed Limit Setting
06P is the speed limit setting. The adjustable speed limit range is: 1~52km/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 6-6 Speed limit setting interface

6.7 Start-up setting
07P 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 the parameter setting and return to the personalized parameter setting interface.

Figure 6-7 Start-up setting interface

6.8 Drive mode setting
08P 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.

Figure 6-8 Drive mode setting interface

6.9 Pedal assist sensitivity setting
09P 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 the parameter setting and return to the personalized parameter setting interface.

Figure 6-9 Pedal assist sensitivity setting interface

6.10 Pedal assist strength setting
10P 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 the parameter setting and return to the personalized parameter setting interface.

Figure 6-10 Pedal assist strength setting interface

6.11 Number of pedal assist sensor magnets setting
11P is the number of pedal assist sensor magnets setting. The adjustable range: 5~12 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.

Figure 6-11 Number of pedal assist sensor magnets setting interface

6.12 Controller Current Limit Setting
12P 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.

Figure 6-12 Controller current limit setting interface

6.13 Battery under voltage value setting
13P 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.

Figure 6-13 Battery under voltage value setting interface

6.14 Auto Sleep Time Setting
14P 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: 00~60min, 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.

Figure 6-14 Auto Power Off Time Setting Interface

Shortcut operation

dEF is the restore factory default parameter settings. dEF-Y is to restore the factory 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 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 parameter setting interface

7.2 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. The odometer can not be reset.
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.

Figure 7-2 Trip Odometer Reset Interface

Quality Assurance and Warranty

8.1 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.

8.2 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

9.1 Standard wire connection sequence

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-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

Tel: 022-86838795 Fax: 022-86838795
Email: yolin@yolintech.com
Website: www.yolintech.com
Address: Tianjin Beichen District, Tianjin Beichen Economic Development Zone, Medical Equipment Industrial Park, East of Jingfu Highway, Ugu New Science Park 52-1 plant

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