Yolin YL80C User manual

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Contents
Product name and model.....................................................................................................................2
Specifications...................................................................................................................................... 2
Appearance and dimension................................................................................................................. 2
Function overview and functional area distribution........................................................................... 4
Function Overview..............................................................................................................4
Functional area distribution................................................................................................ 5
Button definition................................................................................................................. 6
Normal operation.................................................................................................................................6
On / off................................................................................................................................ 6
UI.........................................................................................................................................6
Walk power assist................................................................................................................7
Backlight on / off.................................................................................................................8
Power assistance (PAS) level selection................................................................................8
Battery bars......................................................................................................................... 9
Motor power indication.......................................................................................................9
Error code indication.........................................................................................................10
General settings................................................................................................................................. 10
Single mileage reset.......................................................................................................... 11
Backlight brightness..........................................................................................................11
Imperial and Metric Unit Conversion...............................................................................12
General parameter settings................................................................................................................13
Wheel diameter setting......................................................................................................13
Speed limit setting.............................................................................................................14
Personalization settings.....................................................................................................................14
Battery level setting...........................................................................................................15
Power assist parameter setting (optional)......................................................................... 16
Current limit value setting (optional)................................................................................17
Booster sensor setting (optional)...................................................................................... 17
Throttle setting(optional).................................................................................................. 18
System settings (optional).................................................................................................20
Power-on password setting............................................................................................... 21
Exit Settings...................................................................................................................... 22
Restore default settings..................................................................................................................... 23
Quality commitment and warranty................................................................................................... 23
Lead connection diagram.................................................................................................................. 24
Precautions........................................................................................................................................ 24
Schedule 1: Error code definition table............................................................................................ 25
Schedule 2: Table of default values for PAS level ratio................................................................... 25

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Product name and model
Intelligent LCD meter for electric bicycle; Model: YL80C.
Specifications
24V / 36V / 48V power supply
Instrument rated working current 10mA
Maximum working current of the instrument: 30mA
Shutdown leakage current <1uA
Supply controller current 50mA
Working temperature -20 ～60 ℃
Storage temperature -30 ～70 ℃
Appearance and dimension
Physical and dimensional drawings (unit: mm)

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Physical and dimensional drawings

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Function overview and functional area
distribution
Function Overview
YL80C meters provide a variety of functions to meet your riding needs, including:
Battery bars
Motor power indication
Assist level adjustment and indication
Speed (including real-time speed, maximum speed, average speed)
Mileage (including single mileage and total mileage)
Walk assist mode
Backlight control and display
Error code
USB connection indication (optional)
Heart rate (optional)
Multiple parameter settings (such as: wheel diameter, speed limit, battery power setting and
boost parameter setting, power-on password setting, controller current limit setting, etc.)
Default parameter recovery function

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Functional area distribution
YL80C functional area distribution interface

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Button definition
There are five keys on the operation unit corresponding to the YL80C meter. The keys ‘+’ and ‘-’
are replaced with the words "UP" and "DOWN" in the following description.
Normal operation
On / off
After long pressing M, the meter starts to work, and the controller's working power is connected.
In the on state, short press Mto turn off the power of the electric bike. In the off state, the meter
no longer uses battery power, and the leakage current of the meter is less than 1uA.
If the e-bike is not used for more than 10 minutes, the meter will automatically shut down.
UI
After the display is turned on, the display shows the real-time speed and total mileage (km) by
default. Short press ‘i’ key, the displayed information can be in real time speed (km / h), single
mileage (km), total mileage (km), maximum speed (km / hour), average speed (km / Hour) and

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cycling power.
Display interface switching
Walk power assist
Press and hold DOWN, the electric bike enters the state of electric walk power assistance. Electric
bike travel at a constant 6km/h. At the same time the screen shows . Release the DOWN,
the electric bike will immediately stop the power output and return to the state before the boost.

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Walk power assist interface
The Walk power assist mode can only be used when the user pushes the electric bicycle.
Do not use it while riding.
Backlight on / off
Short press the headlight key, the display backlight dims, and at the same time notify the
controller to turn on the headlight. When there is insufficient external light or driving at night, the
headlights can be turned on. Press the headlight key again, the display backlight turns on and tells
the controller to turn off the headlights.
Backlit display interface
Power assistance (PAS) level selection
Short press the UP / DOWN button to switch PAS level thereby changing the motor output power.
The default output power range of the display is 0-3, 0 is 0 power output, 1 is the lowest power,
and 3 is the highest power. When the level 3 is reached, short press the UP button again, the
interface still displays 3, and the number 3 does not change, which is the highest grade. After the
assist downshift reaches the level 0, press the DOWN button again briefly, the interface still
displays 0, the number 0 does not change, and it is the lowest level. The default position of the
display when it is turned on is level 1.

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PAS level interface
Battery bars
The battery displays 5 power bars. When the battery voltage is high, all 5 bars are on. When the
battery is under voltage, the outer frame of the battery flashes at a frequency of 1HZ, prompting
you to charge immediately.
Battery indication interface
Motor power indication
You can know the motor output power through the display. The display mode is shown in the
figure below.
Motor power indication interface

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Error code indication
Error code indication interface
When an error code appears on the display interface, remove the fault in a timely
manner. The electric bike will not run normally after the fault occurs.
General settings
Press and hold M to power on. In the on state, when the bicycle is stationary, press and hold the
UP and DOWN buttons simultaneously for more than 2 seconds, the display will enter the general
setting state.
Each setting item needs to be set when the bicycle is stationary.