YL61F Electric Bike

Electric Bike Display

Specifications

• Product Name: Smart LCD display for electric bicycle
• Model Number: YL61F
• Power Supply: 36V/48V
• Display Rated Current: 15mA
• Display Maximum Current: 30mA
• Shutdown Leakage Current: [Value not provided]

Product Usage Instructions

1. Installation

To install the Electric Bike Display, follow these steps:

1. Ensure that the power supply to the electric bicycle is
   switched off.

2. Locate the appropriate mounting position on the handlebar of
   the electric bicycle.

3. Attach the Electric Bike Display securely to the handlebar
   using the provided mounting bracket.

4. Connect the display’s wiring harness to the corresponding
   connector on the electric bicycle’s controller.

5. Tighten all connections and ensure that the display is firmly
   in place.

2. Power Supply Connection

The Electric Bike Display requires a 36V or 48V power supply. To
connect the power supply:

1. Locate the power supply connector on the display.

2. Connect the positive (+) wire of the power supply to the
   positive terminal of the display.

3. Connect the negative (-) wire of the power supply to the
   negative terminal of the display.

3. Display Operation

The Electric Bike Display provides various information and
features. Here is an overview:

• Battery Level: Displays the remaining battery capacity.

• Speed: Shows the current speed of the electric bicycle.

• Odometer: Tracks the total distance traveled.

• Assist Level: Allows you to select different levels of
  assistance.

• Backlight: Controls the display’s backlight for better
  visibility in low-light conditions.

Refer to the user manual for detailed instructions on using each
feature.

FAQ (Frequently Asked Questions)

Q: How do I change the assist level on the Electric Bike

Display?

A: To change the assist level, press the up or down button on
the display until the desired level is selected. The current assist
level will be shown on the display.

Q: Can I use the Electric Bike Display with any electric

bicycle?

A: The Electric Bike Display is compatible with most electric
bicycles that have a 36V or 48V power supply. However, it is
recommended to check the compatibility with your specific electric
bicycle model before installation.

Q: How do I reset the odometer on the Electric Bike

Display?

A: To reset the odometer, press and hold the reset button on the
display for several seconds. The odometer will be reset to
zero.

Electric Bike Display
User’s Manual
YL61F
Tianjin Yolin Technology Co. Ltd.

TABLE OF CONTENTS
1. Product name and model number ……………………………………………………………………………………………………………………………2 2. Specification ………………………………………………………………………………………………………………………………………………………..2 3. Appearance and Size ……………………………………………………………………………………………………………………………………………. 2 4. Function overview and Functional areas ………………………………………………………………………………………………………………… 3
4.1 Functional overview …………………………………………………………………………………………………………………………………….3 4.2 Functional areas …………………………………………………………………………………………………………………………………………..3 4.3 Button definitions ………………………………………………………………………………………………………………………………………..3 5. Routine operation ………………………………………………………………………………………………………………………………………………… 3 5.1 Power on/off ………………………………………………………………………………………………………………………………………………. 3 5.2 Display interface switching …………………………………………………………………………………………………………………………..4 Figure 5-1 Display Interface Switching ……………………………………………………………………………………………………………………… 4 5.3 Walk boost mode ………………………………………………………………………………………………………………………………………… 4 5.4 Turning on/off lights …………………………………………………………………………………………………………………………………….5 5.5 PAS level selection ………………………………………………………………………………………………………………………………………5 5.6 Battery level display …………………………………………………………………………………………………………………………………….5 5.7 Error code display ………………………………………………………………………………………………………………………………………. 6 6. Personalized parameter settings …………………………………………………………………………………………………………………………….. 6 6.1 Backlight luminance setting ………………………………………………………………………………………………………………………….7 6.2 Metric and Imperial setting ………………………………………………………………………………………………………………………….. 7 6.3 Rated voltage setting …………………………………………………………………………………………………………………………………… 8 6.4 Auto Sleep Time Setting ……………………………………………………………………………………………………………………………….8 6.5 PAS level setting ………………………………………………………………………………………………………………………………………… 9 6.6 Wheel diameter setting …………………………………………………………………………………………………………………………………9 6.7 Number of speed sensor magnets setting ………………………………………………………………………………………………………10 6.8 Speed limit setting ……………………………………………………………………………………………………………………………………..10 6.9 Start-up setting …………………………………………………………………………………………………………………………………………. 11 6.10 Drive mode setting ………………………………………………………………………………………………………………………………….. 11 6.11 Pedal assist sensitivity setting …………………………………………………………………………………………………………………… 12 6.12 Pedal assist strength setting ……………………………………………………………………………………………………………………….12 6.13 Number of pedal assist sensor magnets setting …………………………………………………………………………………………… 13 6.14 Controller Current Limit Setting ………………………………………………………………………………………………………………..13 6.15 Controller under voltage value setting ………………………………………………………………………………………………………..14 6.16 ODO reset operation ……………………………………………………………………………………………………………………………….. 14 6.17 Cruise enable setting ……………………………………………………………………………………………………………………………….. 15 6.18 Promotion function setting ………………………………………………………………………………………………………………………..15 7. Quality Assurance and Warranty …………………………………………………………………………………………………………………………..16 7.1 Warranty info …………………………………………………………………………………………………………………………………………….16 7.2 Warranty does not cover ……………………………………………………………………………………………………………………………..16 8. Wire connection diagram ……………………………………………………………………………………………………………………………………. 16 8.1 Standard wire connection sequence …………………………………………………………………………………………………………….. 16 9. Precautions ……………………………………………………………………………………………………………………………………………………….. 16 Schedule 1: Error Code Definition ……………………………………………………………………………………………………………………………17 Schedule 2: Error Code Definition ……………………………………………………………………………………………………………………………17

1. Product name and model number
Smart LCD display for electric bicycle; Model: 61F.
2. Specification
36V/48V power supply Display rated current 15mA Display maximum current 30mA Shutdown leakage current <1uA Supplied current to the controller 50mA Operating temperature -2060 Storage temperature -3070
3. Appearance and Size

Figure 3-1 Physical pictture of the YL61F display

Figure 3-2 YL61F Front View Dimension 2

Figure 3-3 YL61F Side View Dimension

4. Function overview and Functional areas
4.1 Functional overview The YL61F display offers a variety of features to suit 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 (optional) Cruise control indicator (optional) Bluetooth connection indicator (optional) 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
4.2 Functional areas

Battery level

Speed

PAS level Max speed Cruise control

Walk boost

Trip odometer Odometer

Figure 4-1 YL61F functional area distribution interface

Light ON/OFF
Speed unit Km/h MPH
Average speed
Mileage/speed unit MetricKmKm/h Imperial: MileMile/h

4.3 Button definitions The YL61F display is equipped with three buttons on the correctionding operating unit: power on/off

, plus

and minus .
5. 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.

3

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

Trip Odometer

Odometer

Average Speed

Figure 5-1 Display Interface Switching

Maximum Speed

5.3 Walk boost mode Long press and hold

, the electric bicycle enters the walk boost mode. The electric bicycle will walk ata a fixed

speed of 6km per hour and the display shows the state before walk boost.

. Release the button to stop the power output immediately and restore to

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.
4

5.4 Turning on/off lights

Long press the

to make the controller turn on the lights and display backlight becomes dim. Long 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.

Figure 5-4 PAS level display interface
5.6 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.

Full power

Four bars power Three bars power Two bars power One bar power Empty power flashing Figure 5-5 Battery Level Display Interface

5

5.7 Error code display If there is a fault occurs in the electric 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 Interface
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.

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

(1) Press and hold and 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

parameter changing state.

to enter the

(3) Press / operation.

to select the parameter, long press

for addition operation, long press

for subtraction

(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.

6

6.1 Backlight luminance setting 01P refers to the backlight luminance setting option. The adjustable range is: 1-3, 01 for the minimum luminance, 02
for the standard luminance, 03 for the maximum luminance.

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

to save the

Figure 6-1 Backlight luminance setting interface

6.2 Metric and Imperial setting 02P is the metric and imperial setting option, 00 for metric and 01 for imperial.
Press to enter the parameter changing state. Press the / to select the parameter and press parameter setting and return to the personalized parameter setting interface.

to save the

Metric display interface

Imperial display interface

Figure 6-2 Metric and Imperial Units Setting Interface

7

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

to save the

Figure 6-3 Rated voltage setting interface

6.4 Auto Sleep Time Setting 04P is the auto sleep time setting. To save the battery power and reach higher range, this dispaly 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 parameter setting and return to the personalized parameter setting interface.

to save the

Figure 6-4 Auto Power Off Time Setting Interface 8

6.5 PAS level setting 05P is the Pedal assist (PAS) level setting option. The available Pedal assist level settings are: 0~3, 1~3, 0~5, 1~5, The
factory default setting 0~5.

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

to save the

Figure 6-5 PAS level setting interface

6.6 Wheel diameter setting 06P is the wheel diameter setting option. Unit: inch, accurace: 0.1, The adjustable wheel diameter range is: 0~50inch.

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

to save the

Figure 6-6 Wheel diameter setting interface 9

6.7 Number of speed sensor magnets setting 07P is the speed sensor magnet number setting option. The adjustable speed sensor magnet number range is:
01~255pcs.

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

to save the

Figure 6-7 Number of speed sensor magnets setting interface

6.8 Speed limit setting 08P is the speed limit setting option. Change this value to set the maximum riding speed of the electric vehicle; The
adjustable speed limit range is: 0~100km/h, 100 means no speed limit.

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

to save the

Figure 6-8 Speed limit setting interface 10

6.9 Start-up setting 09P is the start-up setting option. 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 parameter setting and return to the personalized parameter setting interface.

to save the

Figure 6-9 Start-up setting interface

6.10 Drive mode setting 10P is the drive mode setting option. The available drive modes are: 00 Pedal assist only, 01 Electric only, 02
Both Pedal and assist electric.

Press

to enter the parameter changing state. Press the / to select the parameter and press

the parameter setting and return to the personalized parameter setting interface.

to save

Figure 6-10 Drive mode setting interface 11

6.11 Pedal assist sensitivity setting 11P is the pedal assist sensitivity setting option. The adjustable range is: 1~24.
Press to enter the parameter changing state. Press the / to select the parameter and press parameter setting and reyurn to the personalized parameter setting interface.

to save the

Figure 6-11 Pedal assist sensitivity setting interface

6.12 Pedal assist strength setting 12P is the Pedal assist strength setting option. 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 parameter setting and reyurn to the personalized parameter setting interface.

to save the

Figure 6-12 Pedal assist strength setting interface 12

6.13 Number of pedal assist sensor magnets setting 13P is the number of pedal assist sensor magnets setting option. The adjustable range: 5pcs, 8pcs,12pcs.

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

to save the

Figure 6-13 Number of pedal assist sensor magnets setting interface

6.14 Controller Current Limit Setting 14P is the controller current limit setting option. The adjustable range is: 1~50Ah, The factory default setting is 12Ah.

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

to save the

Figure 6-14 Controller Current limit setting interface 13

6.15 Controller under voltage value setting 15P is the controller under voltage value setting option.
Press to enter the parameter changing state. Press the / to select the parameter and press parameter setting and return to the personalized parameter setting interface.

to save the

Figure Controller under voltage value setting interface

6.16 ODO reset operation 16P is the odometer reset setting option. Optional

1. Press to enter the parameter changing state. Press the / to select the parameter and press parameter setting and return to the personalized parameter setting interface.

to save the

Figure 6-16 ODO reset operation 14

6.17 Cruise enable setting 17P is the cruise enable setting option. 00 means disabled cruise, 01 means enable cruise, The factory default 00.

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

to save the

Figure 6-17 Cruise enable setting interface

6.18 Promotion function setting 18P is the promotion function setting option. 00 represents no 6km, 01 represents 6km. The factory default 00.

Press

to enable the parameter changing state. Press the / to select the parameter and press

the parameter setting and return to the personalized parameter setting interface interface.

to save

Figure 6-18 Promotion function setting interface 15

7. Quality Assurance and Warranty
7.1 Warranty info Yolin will offer a limited warranty for any failure caused by the product defects under normal use during the
warrant period. The product is warranted for 12 months from the date out of factory.
7.2 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.
8. Wire connection diagram
8.1 Standard wire connection sequence

Controller connector

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

Standard Wire Sequence 1 2 3 4 5

Table 9-1 Standard connector wire sequence table

Standard wire color

Function

Red (VCC)

Display power wire

Blue (Kp)

Controller power wire

Black (GND)

Display ground wire

Green (RX)

Display data reception wire

Yellow (TX)

Display data transmit wire

Some models are equipped with waterproof connectors and color inside wires can not be seen.
9. 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 to all the general operating when using the products and do not plug and unplug the display while it is powered on.
Please do not change the parameter settings at will, otherwise normal riding cannot be guarantteed. 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.
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Error code E001 E002 E003

Schedule 1: Error Code Definition
YL-01YL-02 Error codes

Definition

Error code

Definition

Controller failure

E004

Throttle failure

Communication failure

E005

Brake failure

Hall failure

E006

Motor phase failure

Error code Error05
Error06

Schedule 2: Error Code Definition
Customized YL-02LKLSError codes

Status significance

Processing method

Brake failure

Whether the brake is in position; Replace

the brake handle

Battery undervoltage

Requires battey charging

Error07

Motor fault

Check whether the power line is loose

Error08 Error09

Throttle failure Controller failure

Whether the handle is returned; Check the handle link. If it is normal, replace the handle Check the controller hall connection

Error10 Error11

Communication reception failure
Communication transmission failure

Check whether the instrument cable is connected properly
Check whether the instrument cable is connected properly

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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References

• Tianjin Yolin Technology Co.,Ltd

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