ROLL-ROAD EMMA User manual

EMMA Owner's Manual
http://roll-road.com

Take down your serial numbers here!
Bike frame number:
B
Battery serial number:
Motor serial number:
If you reset a security passcode via Display Setting,
we suggest you write it down here in case you may forget:

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Contents
About Manual.....................................................................................................................................................................2
Basic Specifications..........................................................................................................................................................3
Battery Pack Installation...................................................................................................................................................4
Color LCD Display Manual.........................................................................................................................................5
Safety Checklist................................................................................................................................................................30
Emma Use&Care...............................................................................................................................................................32
Trouble Shooting...............................................................................................................................................................36
Quality Assurance and After-Sale Service ......................................................................................................................37
Maintenance.......................................................................................................................................................................39
Riding Limitations..............................................................................................................................................................40
 Online Resources...............................................................................................................................................................40

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About Manual
This manual contains details of the product, information on its operation and maintenance, and other helpful tips for owners. Read it carefully and familiarize yourself with
the Roll Road e-bike before using it to ensure safe use, reduce risk of damage and premature wear, and prevent accidents. Be sure to retain this manual as your convenient
Roll Road e-Bike information source.
This manual contains many Warnings and Cautions concerning safe operation, and consequences if proper setup, operation and maintenance guidelines are
not followed. All information in this manual should be carefully reviewed.
The safety grade color of Caution is
orange, and if not avoided, may result in
moderate or serious injury.
Users should also pay special attention to
information marked in this manual
beginning with “NOTICE”
The safety grade color of Warning is red, and if not avoided will likely result in serious
injury or death.
Because it is impossible to anticipate every situation or condition which can occur while riding, this manual makes no representations about the safe use of our bicycles
under all conditions. There are risks associated with the use of any bicycle which cannot be predicted or avoided, and which are the sole responsibility of the rider. You
should keep this manual, along with any other documents that were included with your bicycle, for future reference, however all content in this manual is subject to change
or withdrawal without notice. Visit http://roll-road.com/ to download the latest version. Assembly and first adjustment of your Roll Road e-Bike requires special tools and skills,
and it is recommended that this be performed by a trained bicycle mechanic if possible
.

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Basic Specifications
Frame
JYL 6061 Aluminum Alloy
Pedal Assist
Torque Sensors/0-5 level pedal assist
Drive Mode
Half Twist Throttle +Pedal Assist Mode
((individually 5 Levels)
Pedals
Wellgo
Display
Color LCD Display with USB port
Weight
93 lbs(with battery)
Color
White/Black Frame
Length*Width*Height
67*29*43.3 In
Battery
48V 20Ah Lithium Battery with USB port
Fender
Full fenders
Fork
Hydraulic suspension /Soft and Hard Adjustable
Lockout
Lights
1200 lumen LED headlight, water-flowing front
and rear turn signals
Shift System
Shimano 7-Speed Gear Shift System
Suspension
Full Suspension
Tire
Kenda 20”*4” In
USB Charging Port
Yes
Chain
KMC
Cruise Control
Yes
Brake
180mm Hydraulic Disc Brakes
Total Payload
Capacity
450 lbs
RIM
Aluminum Alloy Spoke Rim
Charging Time
6-8 Hours

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Battery Pack Installation Guide
1. After putting the battery into the slot correctly, push it downward into the lock, then push the battery into the frame and lock it;.
2. Notice: the key must be pulled out. (Otherwise the key may be crushed when turning the fork).
NOTICE: Before assembling your bike, it’s recommended to remove the battery for the reasons outlined below:
1. Determine if there’s battery drain or damage during shipping.
2. Reduce the weight of the e-bike to make it easier to maneuver the bike while assembling.
3. Avoid battery damage during the assembly process.

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Emma LCD Display User’s Manual
TABLE OF CONTENTS
◆1. PRODUCT NAME AND MODEL NUMBER..................................................................................................................................................
◆2. SPECIFICATION................................................................................................................................................................................................
◆3. APPEARANCE AND SIZE...............................................................................................................................................................................
◆4. FUNCTION OVERVIEW AND FUNCTIONAL AREAS................................................................................................................................
• 4.1 FUNCTIONAL OVERVIEW.....................................................................................................................................................................
• 4.2 FUNCTIONAL AREAS............................................................................................................................................................................
• 4.3 BUTTON DEFINITIONS..........................................................................................................................................................................
◆5. ROUTINE OPERATION....................................................................................................................................................................................
• 5.1 POWER ON/OFF......................................................................................................................................................................................
•
5.2 DISPLAY INTERFACE SWITCHING....................................................................................................................................................
• 5.3 WALK BOOST MODE.............................................................................................................................................................................
•
5.4 TURNING ON/OFF LIGHTS...................................................................................................................................................................
• 5.5 PAS LEVEL SELECTION.......................................................................................................................................................................
•
5.6 BATTERY LEVEL DISPLAY..................................................................................................................................................................
• 5.7 ERROR CODE DISPLAY........................................................................................................................................................................
◆6. PERSONALIZED PARAMETER SETTINGS................................................................................................................................................
• 6.1 BACKLIGHT BRIGHTNESS..................................................................................................................................................................
•
6.2 METRIC AND IMPERIAL SETTING.....................................................................................................................................................
•
6.3 RATED VOLTAGE SETTING.................................................................................................................................................................
• 6.4 AUTO SLEEP TIME SETTING...............................................................................................................................................................
•
6.5 PAS LEVEL SETTING.............................................................................................................................................................................
•
6.6 WHEEL DIAMETER SETTING...............................................................................................................................................................
• 6.7 NUMBER OF SPEED SENSOR MAGNETS SETTING.....................................................................................................................
• 6.8 SPEED LIMIT SETTING..........................................................................................................................................................................
• 6.9 START-UP SETTING...............................................................................................................................................................................

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• 6.10 DRIVE MODE SETTING.......................................................................................................................................................................
• 6.11 PEDAL ASSIST SENSITIVITY SETTING..........................................................................................................................................
• 6.12 PEDAL ASSIST STRENGTH SETTING..........................................................................................................................................
• 6.13 NUMBER OF PEDAL ASSIST SENSOR MAGNETS SETTING.................................................................................................
•
6.14 CONTROLLER CURRENT LIMIT SETTING..................................................................................................................................
• 6.15 BATTERY UNDER VOLTAGE VALUE SETTING.........................................................................................................................
•
6.16 TRIP ODOMETER RESET OPERATION........................................................................................................................................
• 6.17 CRUISE CONTROL SETTING..........................................................................................................................................................
• 6.18 SPEED RETIO SETTING...................................................................................................................................................................
◆7. SHORTCUT OPERATION................................................................................................................................................................................
• 7.1 SHORTCUT OPERATION......................................................................................................................................................................
•
7.2 TRIP ODOMETER RESET OPERATION.............................................................................................................................................
◆8. WIRE CONNECTION DIAGRAM.....................................................................................................................................................................
• 8.1 STANDARD WIRE CONNECTION SEQUENCE................................................................................................................................
◆9. PRECAUTIONS................................................................................................................................................................................................
SCHEDULE 1: ERROR CODE DEFINITION...................................................................................................................................................
◆1.Product Name and Model Number
◆2. Specification
• 36V/48V/52V 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
◆3. Appearance and Size

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Figure 3-1 Physical picture of the YL90T-H display

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Figure 3-2 Physical picture of the K5 control button Figure 3-3 Physical picture of the K6 control button
Figure 3-4 90T-H Front View Dimension Figure 3-5 90T-H Side View Dimension

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Battery level
Light ON/OFF
Odometer Trip
odometerMax
speed
Average speed
Error code
PAS level
Value and unit
Speed
Speed unit
KM/H
MPH
Walk boost
Cruise control
◆4. Function overview and Functional areas
4.1 Functional overview
The YL90T-H 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, battery power setting and PAS parameter setting,password setting, controller
current limit setting, etc.).
● Factory default parameter recovery function
4.2
Functional areas

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4.3 Button definitions
Figure 4-2 YL90T-H functional area distribution interface
The YL90T-H display is equipped with five buttons on the corresponding operating unit: power on/off , plus , minus , light and toggle .
◆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 leakagecurrent 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 Odometer (km) by default. Short press to switch between Odometer (km), Trip Odometer(km), Maximum Speed (km/h), and Average Speed (km/h).

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Odometer Trip Odometer
Average speed Maximum
Figure 5-2 Display Interface Switching

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5.3
Walk boost mode
Long Press and hold , the electric bicycle enters the walk boost mode. The electric bicycle will walk at a fixed speedof 6 km per hour and the display shows . Release the button to stop the power output immediately
and restore to the state before walk boost.（Some protocols do not support this function）
Figure 5-3 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 5-4Backlight display interface

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5.5 PAS level selection
Press / to switch PAS level of electric bicycle, thus changing the motor output power.
Figure 5-5 PAS level display interface

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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 isfully 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
Figure 5-6 Battery Level Display Interface
5.7 Error code display
If there is a fault occurs in the electronic system of the electric bicycle, the display will automatically show an errorcode, 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

15
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,
(1)
Press and hold simultaneously for more than 2 seconds to enter the personalized parameter settinginterface.
(2)
Press / to toggle between the personalized parameter setting interface, and press to enter theparameter 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:
6.1
Backlight Brightness Setting
01P is the backlight brightness setting, 00 for darkest, 01 for standard and 03 for brightest.
Short 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 Backlight Brightness Setting Interface

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6.2
Metric and Imperial setting
02P 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.
6.3 Rated voltage setting
Figure 6-2 Metric and Imperial Units Setting Interface

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03P is the rated voltage setting. The available rated voltage range is: 24V, 36V, 48V.
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 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 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.
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.

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Figure 6-4 Auto Power Off Time Setting Interface
6.5 PAS level setting
05P is the Pedal assist (PAS) level setting. The available Pedal assist level settings are: 0~3, 1~3, 0~5, 1~5, 1~7, 0~7, 0~9, 1~9.
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 PAS level setting interface
6.6 Wheel diameter setting
06P is the wheel diameter setting. The adjustable wheel diameter range is: 1~50inch.
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.