Yolin YL70E User manual

Tianjin Yolin Technology Co.,Ltd.
User Manual for
E-bike Display
YL70E

Table of Contents
1. Product name and model............................................................................................................................................................... 1
2. Specifications...............................................................................................................................................................................1
3. Appearance and dimensions..........................................................................................................................................................1
4. Function overview and functional area layout............................................................................................................................ 2
4.1 Function overview.................................................................................................................................................................... 2
4.2 Functional area layout............................................................................................................................................................. 2
4.3 Button definitions.....................................................................................................................................................................2
5. General operation ......................................................................................................................................................................... 2
5.1 Power on/off.......................................................................................................................................................................2
5.2 Display interface.......................................................................................................................................................................2
5.3 Headlight on/off.......................................................................................................................................................................3
5.4 Assist level selection................................................................................................................................................................. 3
5.5 Battery level indicator............................................................................................................................................................. 3
5.6 Error code indicator................................................................................................................................................................. 3
6. Custom setting...............................................................................................................................................................................4
6.1 Metric/imperial system setting................................................................................................................................................ 4
6.2 Setting of number of steel magnets for speed measurement................................................................................................. 5
6.3 Rated voltage setting................................................................................................................................................................5
6.4 Wheel diameter setting.............................................................................................................................................................5
6.5 Speed limit setting.....................................................................................................................................................................6
7. Quality commitments and warranty scope.................................................................................................................................. 6
7.1 Warranty information:............................................................................................................................................................ 6
7.2 Non-warranty scope................................................................................................................................................................. 6
8. Outgoing line connection diagram................................................................................................................................................6
8.1 Wiring sequence of standard connector................................................................................................................................. 6
9. Considerations...............................................................................................................................................................................7
Schedule 1 Error Code Definitions.................................................................................................................................................... 7

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1. Product name and model
Intelligent digital display for e-bike; model: YL70E.
2. Specifications
 36V/48V power supply
 Rated working current 18mA
 Maximum working current 30mA
 Leakage current at power-off <1uA
 Working current at the supply controller end 50mA
 Working temperature -20～60
 Storage temperature -30～70
3. Appearance and dimensions
Fig. 3-1 Picture of Display 70E
Fig. 3-2 Front View of Display 70E Dimensions
Fig. 3-3 Side View of Display 70E Dimensions

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4. Function overview and functional area layout
4.1 Function overview
Display YL70E provides a variety of functions to meet the riding needs of users, including:
 Battery level indicator
 Assist level adjustment and indication
 Speed indicator
 Distance indicator (including trip distance and ODO)
 Headlight indicator
 Error code indicator
 Custom parameter setting
4.2 Functional area layout
Fig. 4-1 Functional Area Layout Interface of Display YL70E
4.3 Button definitions
There are two buttons on the operating unit of display YL70E, i.e., the on/off button and the level button .
5. General operation
5.1 Power on/off
By pressing and holding the button , the display will start to work and the working power supply of the controller
will be turned on. In the power-on state, by pressing and holding the button , your e-bike will be powered off. In the
power-off state, the display will no longer use the battery power, and its leakage current will be less than 1uA.
 If your e-bike is not used for more than 10 minutes, the display will be automatically powered off.
5.2 Display interface
After the display is turned on, the display will show the real-time speed (km/h) and the trip distance (km) by default.
By pressing and holding the button , the information displayed will be switched between the trip distance (km) and the
ODO (km). When the ODO light is off, the trip distance is displayed; when the ODO light is on, the ODO is displayed.
Trip distance indicator ODO
Fig. 5-1 Display Interface Switching
Headlight indicator
Speed indicator
Speed unit
Distance indicator
Battery level indicator
Assist level indicator
Odometer

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5.3 Headlight on/off
When the ambient environment is dark or when driving at night, you may turn on the headlights.
By pressing the button , the controller will turn on the headlights; by pressing the button again, the
controller will turn off the headlights.
Fig. 5-2 Headlight-on Indicator Interface
5.4 Assist level selection
By pressing the button , the e-bike assist level will be switched cyclically to change the motor output power. The
assist levels available for the display include: levels 0-3, levels 1-3, levels 0-5, levels 1-5, levels 0-7, levels 1-7, levels 0-9
and levels 1-9.
Fig. 5-3 Assist Level Switching Interface
5.5 Battery level indicator
The battery level indicator consists of four segments. When the battery is fully charged, the four segments will be all
on. In case of undervoltage, the outline of the battery indicator will flash, which means the battery has to be charged
immediately.
Fig. 5-4 Battery Level Indicator Interface
5.6 Error code indicator
When a fault occurs in the electronic control system of your e-bike, the display will automatically indicate the error
code in the distance area in the format of E0**. Detailed definitions of error codes are shown in Schedule 1.
Fig. 5-5 Error Code Indicator Interface
 When an error code appears on the display interface, please conduct troubleshooting in time. Otherwise, your e-bike will

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not work normally.
6. Custom setting
In order to meet the users needs, there are currently three versions of custom settings available:
Table 6-1 Functions of each Custom Setting Version
Version
Setting function
Remarks
A1
N/A
/
A2
6.1 Metric/imperial system setting + 6.2 Setting of number of
steel magnets for speed measurement
Settings 1
A3
6.3 Rated voltage setting + 6.4 Wheel diameter setting + 6.5
Speed limit setting
Settings 2
The steps for custom setting are as follows:
In the power-on state, when the display shows the speed of 0,
(1) Simultaneously press and hold buttons and for more than 2 seconds, the custom setting interface will pop
up;
(2) Press the button to switch the function, and press the button to enter the parameter modification
interface;
(3) Press the button for parameter selection;
(4) Press and hold the button to confirm and save the parameter. When "---" is displayed, it will automatically
return to the custom setting interface. Alternatively, press the button to return to the custom setting interface without
saving the parameter;
(5) Press and hold the button or to exit the custom setting interface.
 If no operations are performed within one minute, the display will automatically exit the setting interface.
 All parameters can only be set when your e-bike stops.
A2 version custom setting:
6.1 Metric/imperial system setting
P1 refers to the metric/imperial system setting option. 00 represents the metric system (unit: "km/h"), and 01 represents
the imperial system (no unit display). In the parameter modification interface, press the button to select a parameter,
and press and hold the button to confirm and save the parameter. When "---" is displayed, it will automatically return
to the custom setting interface.
Fig. 6-1 Metric/imperial System Switching Interface

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6.2 Setting of number of steel magnets for speed measurement
P2 represents the setting option of number of steel magnets for speed measurement. The adjustable range of the
number is: 1~64. In the parameter modification interface, press the button to select a parameter, and press and hold the
button to confirm and save the parameter. When "---" is displayed, it will automatically return to the custom setting
interface.
Fig. 6-2 Setting Interface of Number of Steel Magnets for Speed Measurement
A3 version custom setting:
6.3 Rated voltage setting
P1 represents the rated voltage setting option. There are two options for the rated voltage: 36 means the rated voltage is
36V and 48 means the rated voltage is 48V. In the parameter modification interface, press the button to select a
parameter, and press and hold the button to confirm and save the parameter. When "---" is displayed, it will
automatically return to the custom setting interface.
Fig. 6-3 Rated Voltage Setting Interface
6.4 Wheel diameter setting
P2 represents the wheel diameter setting option. The adjustable range is 8~28 inches. Select the corresponding wheel
diameter of your e-bike to ensure the accuracy of the speed and distance indication. In the parameter modification interface,
press the button to select a parameter, and press and hold the button to confirm and save the parameter. When
"---" is displayed, it will automatically return to the custom setting interface.
Fig. 6-4 Wheel Diameter Setting Interface

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6.5 Speed limit setting
P3 represents the speed limit setting option. The adjustable range is 12~40Km/h. In the parameter modification
interface, press the button to select a parameter, and press and hold the button to confirm and save the parameter.
When "---" is displayed, it will automatically return to the custom setting interface.
Fig. 6-5 Speed Limit Setting Interface
7. Quality commitments and warranty scope
7.1 Warranty information:
 For the faults caused by the quality of the product under normal use, the Company will be responsible for providing
limited warranty during the warranty period.
 The warranty period of the product is within 12 months from delivery.
7.2 Non-warranty scope
 The enclosure is opened
 The connector is damaged
 The enclosure is scratched or damaged after delivery
 The outgoing line of the display is scratched or broken
 Faults or damage caused by force majeure (such as fires, earthquakes, etc.) or natural disasters (such as lightning
strikes, etc.)
 The warranty period has expired
8. Outgoing line connection diagram
8.1 Wiring sequence of standard connector
Connecting terminal to the
controller
Leading-out terminal of
display
Connecting terminal
Fig. 8-1 Outgoing Line Connection Diagram
Projection
Groove

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Table 8-1 Wiring Sequence of Standard Connector
Standard wiring
sequence
Standard wire color
Function
1
Red (VCC)
Power cord of display
2
Blue (Kp)
Power control line of controller
3
Black (GND)
Ground wire of display
4
Green (RX)
Data receiving line of display
5
Yellow (TX)
Data transmission line of display
 The outgoing lines of some products adopt waterproof connectors, and users cannot see the outgoing line color inside the
wire harnesses.
9. Considerations
Please use safely, and do not plug or unplug the display when it is powered on.
◆Please avoid bumping as far as possible.
◆Please do not alter the background parameter settings of the display at will, otherwise normal riding cannot be
guaranteed.
◆If the display fails to work normally, it should be repaired as soon as possible.
◆Due to product upgrades of the Company, part of the displayed contents or functions of the product you bought may
be different from the manual, depending on the actual model.
Schedule 1 Error Code Definitions
Error codes for protocols YL-01 and YL-02:
Error codes
for
Definition
Error codes
for protocols
Definition
E001
Controller Abnormality
E004
Throttle Abnormality
E002
Communication Abnormality
E005
Brake Abnormality
E003
Motor Hall Signal Abnormality
E006
Motor Phase Abnormality
Error codes for protocols YL-05, KDS and YL-J:
Error codes
for
Definition
Error codes
for protocols
Definition
E021
Current Abnormality
E024
Motor Hall Signal Abnormality
E022
Throttle Abnormality
E025
Brake Abnormality
E023
Motor Phase Abnormality
E030
Communication Abnormality
Tel: [phone] Fax: [phone]
Email: [e-mail]
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, Tianjin