ICT KT-LCD3 User manual

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KT-LCD3 eBike Special Meter
WWW.SZKTDZ.COM
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 1 -
Contents
Preface……………………………………………………………………………..………. 4
Outlook and Size…………………………………………………………………………... 4
MeterDimension……………………………………………………………………… 4
Button Box Dimension……………………………………………………………….. 4
Main Material and Color………………………………………………….………...... 5
Wiring Schematic……………………………………………………………….……. 5
Installation Instruction……………………………………………………………….…….. 5
Φ31.8 handlebar diameters install icon………………………………………..….… 5
Φ22.2 handlebar diameters install icon……………………………………….….…. 5
Physical installation icon............................................................................................. 6
Function Overview……………………………………………………………………..….. 6
Display Content…………………………………………………………………….….…... 6
Button Definition…………………………………………………………………….….…. 7
Normal Operation………………………………………………………………………...... 7
On/Off…………………………………………………………………………........... 7
Display Interface………………………………………………………….….……..... 8
Display 1………………………………………………………………..……...... 8
Display 2……………………………………………………………………...... 9
Display 3……………………………………………………………..……….... 10
PAS Ratio (or Handlebar) Gear Switch……………………………….……………. 11
Push Function…………………………………………………………..…………… 11
Cruise Function…………………………………………………………………...… 12
Turn On/Off Backlight…………………………………………………….………... 12
Battery Capacity Indicator…………………………………………..…………….… 13
Motor Power and Temperature ................................................................................... 13
Environment Temperature…………………………………………………………... 14
Single Data Clearing……………………………………………………………….... 15

ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 2 -
Automatic Prompt Interface……………………………………………………..….. 15
Error Code Display…………………………………………………….…........ 15
Motor Operating Temperature Alarm……………………………………......... 15
User Project Setting……………………………………………………………………..... 16
General Project Setting…………………………………………………………………… 16
Maximum Trip Speed………………………………………………………….......... 16
Wheel Diameter…………………………………………………………………..…. 17
Metric and Imperial Units…………………………………………………………... 18
Exit General Project Setting……………………………………………………….... 18
P Parameter Setting……………………………………………………………….…….... 19
P1 Motor Characteristic Parameter Setting Mode ...................................................... 19
P2 Wheel Speed Pulse Signal Setting Mode .............................................................. 19
P3 Power Assist Control Mode .................................................................................. 20
P4 Handlebar Startup Mode ....................................................................................... 21
P5 Power Monitoring Mode ....................................................................................... 21
Exit P Parameter Setting ............................................................................................. 22
C Parameter Setting ............................................................................................................ 23
C1 Power Assist Sensor and Parameter Selection Mode ........................................... 23
C2 Motor Phase Classification Coding Mode ............................................................ 23
C3 Power Assist Ratio Gear Initialization Mode........................................................ 24
C4 Handlebar Function Setting Mode ........................................................................ 25
C5 Controller Maximum Current Adjustment Mode ................................................. 26
C6 Backlight Brightness Adjustment Mode ............................................................... 27
C7 Cruise Function Setting Mode .............................................................................. 27
C8 Motor Operating Temperature Display Mode ...................................................... 28
C9 Power-on Password Setting Mode ........................................................................ 29
C10 Automatic Restore Default Setting Mode ........................................................... 30
C11 Attribute Selection Mode .................................................................................... 31
C12 Controller Minimum Voltage Adjustment Mode ............................................... 32
Exit C Parameter Setting............................................................................................. 33

ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 3 -
Parameter Copy .................................................................................................................. 33
User Setting Note ............................................................................................................... 35
Version Information……………………………………………………………………… 35

ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 4 -
Preface
The illustrated manual will help you understand and be familiar with the meter
function, guiding you on how to operate the meter, how to set the project parameters, how
to achieve the best match of the three as motor, controller and meter to improve electronic
control performance of the electric motor. This manual covers installation, operation,
parameter setting of the meter and how to use it properly, which help you resolve the
problems appeared in practical use.
Outlook and Size
○Meter Dimension
Meter Dimension
Dual Bracket Mounting Dimension
○Button Box Dimension
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- -
○Main Material and Color
PC material is mainly used for KT-LCD3 meter and button box housing, and the
housing color is dark gray or white.
○ Wiring Schematic
Installation Instruction
The meter body and button box are mounted on the handlebars of the electric vehicle,
adjusting perspective. In the case that the vehicle is power off, the meter connectors are in
plug connection to corresponding controller connectors. Turn on the power, electric
vehicle and meter will be under normal operation, the meter installation is finished. The
protection film on meter display panel should be torn.
○Φ31.8 handlebar diameters install icon
○Φ22.2 handlebar diameters install icon
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Lateral View Meter and Dual Bracket View

ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 6 -
○Physical installation icon
Function Overview
KT-LCD3 meter provide you with a variety of functions such as vehicle controls and
vehicle status digitized displays to meet the trip demands.
 Trip time display (with displays of a single trip time (TM) and total trip time (TTM));
 Trip speed display (with displays of real-time speed (Km/H or MPH) and a single
maximum speed (MXS) and a single average speed (AVS));
 Trip distance display (with displays of a single trip distance (DST) and total trip
distance (ODO));
 Power assistant ratio (or handlebar) gear (ASSIST) switch;
 6Km/H power assistant push ( ) function;
 Cruise function (CRUISE);
 Battery capacity indicator ( );
 Real-time battery voltage (VOL) display;
 Motor power and temperature (MOTOR) display;
 Brake display ( );
 Turn on backlighting and lights ( );
 Environment temperature ( or )  display;
 Data clearing;
 Fault code display;
 User parameter setting
 ℉ 24V, 36V, 48V supply voltage can automatic identification and be compatible ℉
Display Content
The display content is shown as follow.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 7 -
Button Definition
KT-LCD3 meter adopts the structural form with part design between the main part
and operating buttons.
There are three keys on the operating panel of button box, which are icons of
button (alt text UP), button (alt text SW) and (alt text DOWN).
Button Box and Operating Panel
Normal Operation
○On/Off
Hold button (SW) long, the meter is powered on and into normal operation, and
it provides the controller with power supply. Under normal operating status, hold
button (SW) long, the meter is powered off, meanwhile to shutdown the power supply of
controllers. When the vehicle is stopped and without any button operation on the
meter for five minutes, the meter will automatically shut down, and the power supply
of the electric vehicle will be powered off. In power off mode, the power consumption of
the meter and controller is zero.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 8 -
○Display Interface
Display 1
The meter is startup to enter display 1.
Display 1
The followings are shown on display 1.
Battery Capacity Indicator Single Trip Time (TM) Display
Power Assist Ratio Gear (ASSIST) Real-time Trip Speed (Km/H)
Single Trip Distance 6Km/H Power Assist Function
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 9 -
Motor Operation Power Environment Temperature
Backlights and Headlights Status Brake Status
Cruise Function (CRUISE) Motor Running Temperature
Display 2
In display 1, hold button (SW) shortly to enter display 2.
Display 2
The followings are shown on display 2:
Total Trip Time (TTM) Total Trip Distance (ODO)
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 10 -
Single Average Speed (AVS) Motor Operating Temperature
In the riding mode after 5 seconds, display 2 automatically returns to display 1. ℉
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℉
In display 1, the original motor power is replaced by motor running temperature as is
shown in Figure.
Display 3
In display 2, hold button (SW) shortly to enter display 3.
Display 3
The followings are shown on display 3.
Single Maximum Speed (MXS) Real-time Voltage (VOL)
In the riding mode after 5 seconds, single maximum speed will automatically
return to real-time trip speed (Km/H) as shown in the icon.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 11 -
In display 3, hold button (SW) shortly again to enter display 1. ℉
℉℉
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In each display interface, if you hold button (SW) long, the meter will be
powered-off together with that of the controller.
○PAS Ratio (or Handlebar) Gear Switch
Under normal operation, hold button (UP) or button (DOWN) to
switch the power assist ratio (or handlebar) gear (ASSIST), changing motor output power.
Switching range is 1-5 gear (this can also be configured according to the customer
requirements), gear 1 is for the lowest power, and gear 5 is for the highest power.
At every startup, the meter will automatically restore gear (this can also be
configured as required by users) when it was at last shut down. When the power
assist ratio is gear 0 zero, there’s no power assist function.
○Power Assistant Push Function
Users can use 6Km/H power assist function when pushing vehicles. Hold
button (DOWN), the meter assist function logo ( ) flashes, the vehicle drives at the speed
of no more than 6Km/h. Release button (DOWN), the assist function will be
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 12 -
revoked.
○Cruise Function
When C7 parameter setting is 1 (see C parameter setting), the meter turns on cruise
function, hold button (DOWN) long to enter the cruise status when the vehicle
speed is more than 7 km/h, and the cruise function logo (CRUISE) lights. Brake or hold
any button to revoke cruise function.
○Startup Backlights and Headlights
Hold button (UP) long, the meter turns on the backlights as well as the vehicle
headlights (the Controller should have headlights driving and output functions), meter
backlighting and vehicle lights power logo ( ) light, hold button (UP) long again
to turn off backlights and vehicle headlights.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 13 -
○Battery Capacity Indicator
The meter can automatically identify 24V, 36V, 48V battery capacities when it is
supporting use with the specified controller. When the battery capacity is over 70%, the
four power displays of the meter are lit, when the battery capacities drop, the four power
displays are off in order, when the power capacity is less than 15%, the four power
displays are totally turned off.
When the controller is power off due to voltage shortage, the power display frame
flashes, indicating the vehicle has been in voltage shortage and waiting for shutdown
currently.
Voltage shortage flashes
Battery capacity indicator
○Motor Operating Power and Temperature
Under the riding status of vehicle, the real time running and output power can be
known via the meter displays.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 14 -
Motor operating power
The operating temperature of the motor shows there should be a temperature
sensor installed in the Inner motor to output the temperature for signal detection
simultaneously.
Motor operating temperature
When the motor operating temperature exceeds the warning value, temperature
display flashes to alarm, meanwhile the motor controller will offer the appropriate
protection to motor.
○Environment Temperature
After startup, the environment temperature for using meter will be displayed in
environment temperature display column.
Environment temperature display
The temperature display value may be in deviation shortly after boot-up, and the
display value will be gradually approaching the environment temperature within 10
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
- 1 -
minutes after boot-up.
○Single Data Clearing
5 seconds after the meter is powered on, at display 1, hold both the button (UP)
and the button (DOWN) simultaneously for about 2 seconds, the single trip time
(TM) and single trip distance (DST) flicker, then hold button shortly (SW), the
record contents of both will be cleared.
Single data clearing display
Under the status of data flashing, if there were no operations on the data within 5
seconds, the meter will automatically return to display1 after 5 seconds, and the
original record content will be saved.
○Automatically Prompt Interface
Error Code Display
When the electronic control system of the electric vehicle fails, and the meter will
automatically display (flicker) fault code. You can’t exit the fault code display only the
fault is removed.
Error Code Display
Error Code & Definition Table
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
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Error Code
Definition
01info Throttle Abnormality
03info Motor Hall Signal Abnormality
04info Torque sensor Signal Abnormality
05info Axis speed sensor Abnormality(only applied to torque sensor )
06info Motor or controller has short circuit Abnormality
Motor operating temperature alarm
Under any interface, when the motor operating temperature exceeds the warning value,
the motor operating temperature display flashes to alarm, meanwhile, the controller will
offer the appropriate protection to motor.
User Setting Project
KT-LCD3 meter user setting project
℉ General project setting
℉ P parameter setting
℉ C parameter setting
General Project Setting
○Maximum Trip Speed
Under power off status, hold button long (SW), the meter is turned on. Within
5 seconds after boot-up, hold button (UP) and button (DOWN)
simultaneously for about 2 seconds, the first is to enter the maximum riding speed setting
interface, then the speed display column flashes. Hold button shortly (UP) or
button (DOWN) in order to set the maximum riding speed value. The default maximum
riding speed value was 25Km/h. When the speed of the electric vehicle exceeds the set
value, the motor will be stopped driving.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
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Setting interface of maximum trip speed
Under the setting maximum riding speed interface, if there’s no button operation
on the meter for more than 1 minute, and then the meter will automatically return to
display 1, and the original set values will be saved.
After finishing the maximum riding speed setting, hold button shortly (SW) to
save the current set values and enter into the next setting.
○Wheel Diameter
After finishing the maximum riding speed setting, enter the wheel diameter setting
interface, and then the wheel diameter display column flashes. Hold button (UP) or
button (DOWN) to choose the corresponding wheel diameter specification to a
selected vehicle. The selection range of wheel diameter specifications are 13 species such
as 6,8,10,12,14,16,18,20,22,24,26,700 c and 28 inches.
Setting Interface of Wheel Diameter
Under the wheel diameter setting interface, if there’s no button operation on the
meter for more than 1 minute, and then the meter will automatically return to display
1, and the original set values will be saved.
After finishing the wheel diameter setting, hold button (SW) shortly to save the
current set specification and enter into the next setting.
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
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○Metric and Imperial Units
After finishing the wheel diameter setting, enter into the metric/imperial units setting
interface, and then the speed and mileage unit flash. Hold button (UP) or
button (DOWN) shortly to make sync selection of three metric/imperial units as speed,
mileage, and the environment temperature.
Setting Interface of Metric/Imperial Units
Definition Table of Metric/Imperial Units
Display Metric Imperial
Riding speed Km/H MPH
Total distance Km Mil
Environment
temperature temperature Fahrenheit
Under the metric/imperial units setting interface, if there’s no button operation
on the meter for more than 1 minute, and then the meter will automatically return to
display 1, and the original set units will be saved.
After finishing the metric/imperial units setting, hold button shortly (SW) to
save the current set values, and then speed and mileage units stop flashing. Hold
button (SW) shortly again, and the meter will enter into the maximum riding speed
interface again, or hold button (SW) long for about 2 seconds to exit the general
project setting environment and return to display 1.
○Exit General Project Setting
Among the three general project settings, after each setting is completed, if hold
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ELECTRIC BICYCLE METER KT—LCD3 Product User Manual
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button (SW) long for about 2 seconds, all can exit the setting environment and return to
display 1, meanwhile, the current set parameters are saved.
Under each setting interface, if there’s no button operation on the meter for more than
1 minute, and then the meter will automatically return to display 1, and the original set
parameters will be saved.
P Parameter Setting
After finishing metric/imperial unit settings, the speed and mileage units stop flashing.
Within one minute after stopping flashing, hold button (UP) and button
(DOWN) simultaneously for about 2 seconds to enter P parameter setting environment.
○P1 Motor Characteristic Parameter Setting Mode
P1 is motor characteristic parameter setting mode. P1 = motor gear reduction ratio×
number of rotor magnet pieces, just rounding if there’s any decimal.
After entering P parameter setting environment, the first is to set P1parameter, P1
parameter column flashes. P1 setting ranges between1-255, hold button (UP) or
button (DOWN) shortly for selection.
P1 parameter setting interface
Under P1 parameter setting interface, if there’s no button operation on the
meter for more than 1 minute, and then the meter will automatically return to display
1, and the original set parameter will be saved.
After finishing P1 parameter setting, hold button shortly to save the current set
values and enter P2 parameter setting interface.
○P2 Wheel Speed Pulse Signal Setting Mode
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