Suzhou Kunteng Electronics KT-LCD5 User manual

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User Manual
KT-LCD5 eBike Special Meter
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ELECTRIC BICYCLE METER KT—LCD5 Product User Manual
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Contents
Preface …………………………………………………………………………..………. 3
Outlook and Size ……………………………………………………………………….. 3
Meter Dimension …………………………………………………………………… 3
Main Material and Color ...……………………………………………….………...... 3
Wiring Schematic ……………………………………………………………….……3
Installation Instruction ……………………………………………………………….……. 3
Physical Installation Icon ........................................................................................... 4
Function Overview……………………………………………………………………..….. 4
Display Content …………………………………………………………………….….….. 5
Normal Operation ……………………………………………………………………......5
On/Off ………………………………………………………………………….......... 5
Display Interface ………………………………………………………….….…….... 6
Display 1……………………………………………………………………........ 6
Display 2……………………………………………………………………...... 8
Display 3……………………………………………………………..……….8
Display of Turned on Throttle ……………………………………………………… 10
Display of Power-assist Startup ……………………………………………………. 10
PAS Ratio (or Throttle) Gear Switch ……………………………….…………… 10
Push Function …………………………………………………………..………… 11
Cruise Function …………………………………………………………………... 11
Turn On/Off Backlight …………………………………………………….……….. 12
Battery Capacity Indicator …………………………………………..……………. 12
Single Data Clearing ………………………………………………………………... 13
Automatic Prompt Interface ……………………………………………………..…. 13
Error Code Display …………………………………………………….…....... 13
User Project Setting …………………………………………………………………….... 14
General Project Setting ………………………………………………………………… 14

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Maximum Trip Speed …………………………………………………………......... 14
Wheel Diameter …………………………………………………………………..…15
Metric and Imperial Units ………………………………………………………….. 16
Exit General Project Setting ………………………………………………………... 17
P Parameter Setting ……………………………………………………………….……... 17
P1 Motor Characteristic Parameter Setting ................................................................ 17
P2 Wheel Speed Pulse Signal Setting .......................................................................18
P3 Power-assist Control Mode Setting ...................................................................... 19
P4 Throttle Startup Setting ......................................................................................... 19
P5 Power Monitoring Setting ..................................................................................... 20
Exit P Parameter Setting ............................................................................................. 21
C Parameter Setting ............................................................................................................ 21
C1 Power-assist Sensor and Parameter Selection Setting .........................................21
C2 Motor Phase Classification Coding Setting .......................................................... 22
C3 Power-assist Ratio Gear Initialization Setting .....................................................23
C4 Throttle Function Setting .............................................................................. 24
C5 Controller Maximum Current Adjustment Setting ...............................................25
C6 Backlight Brightness Adjustment Setting ............................................................. 26
C7 Cruise Function Setting ........................................................................................ 27
C8 Undefined ............................................................................................................. 28
C9 Power-on Password Setting .................................................................................. 29
C10 Automatic Restore Default Setting ..................................................................... 30
C11 Attribute Selection Setting .................................................................................. 31
C12 Controller Minimum Voltage Adjustment Setting ............................................. 32
C13 ABS brakes of the controller and Parameters of anti-charge control Setting .... 33
C14 Power-assist Tuning Parameters Setting .............................................................34
Exit C Parameter Setting ........................................................................................... 35
Parameter Copy .................................................................................................................. 35
User Setting Note ............................................................................................................... 36
Version Information …………………………………………………………………… 37

ELECTRIC BICYCLE METER KT—LCD5 Product User Manual
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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
○Main Material and Color
PC material is mainly used for KT-LCD5 meter, and the housing color is dark gray.
○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

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protection film on meter display panel should be torn.
○Physical Installation Icon
Function Overview
KT-LCD5 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));
◇Display of turned on throttle (THROTTLE);
◇Display of power-assist startup (PAS);
◇Power-assist ratio (or throttle) gear (ASSIST) switch;
◇6Km/H power assistant push ( ) function;
◇Cruise function (CRUISE);
◇Battery capacity indicator ( );
◇Real-time battery voltage (VOL) display;
◇Brake display ( );
◇Turn on backlighting and lights ( );
◇Data clearing;

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◇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.
There are three keys on the KT-LCD5 display panel, icons is UP button,
is SW button, is DOWN button.
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 shut down 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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○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)

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Single Trip Distance 6Km/H Power Assist Function
Backlights and Headlights Status Brake Status
Cruise Function Display Power-assist Startup Display
Throttle Turned on Display

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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)
Single Average Speed (AVS)
In the riding mode after 5 seconds, display 2 automatically returns to display 1.
Display 3：
In display 2, hold button (SW) shortly to enter display 3.

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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.
In display 3, hold button (SW) shortly again to enter display 1.
In each display interface, if you hold button (SW) long, the meter will be
powered-off together with that of the controller.

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○Display of Turned on Throttle
Rotate the throttle control handle under normal operating of the meter, the display
interface shows the sign of turned-on throttle, see the Figure below. The sign will be off
automatically after about five seconds.
○Display of Power-assist Startup
The meter is driving with power-assist under normal operating conditions, the display
interface flashes the power-assist startup sign (PAS) as shown in the figure. The sign will
be off automatically after about five seconds.
○PAS Ratio (or Throttle) Gear Switch
Under normal operation, hold button (UP) or button (DOWN) to
switch the power-assist ratio (or throttle) 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.

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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
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.

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○ 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.
○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.

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Voltage shortage flashes
Battery capacity indicator
○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：

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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：
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
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

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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.
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.

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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.
○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

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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
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
P1 is motor characteristic parameter setting, 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.

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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
Enter P2 parameter setting interface after P1 parameter setting is finished, and P2
parameter column flashes.
P2 parameter setting interface
P2 is wheel speed pulse signal setting, if wheel generated 1 pulse signal by a
revolution, P2 should be set as1. If wheel generated 6 pulse signals by a revolution, P2
should be set as 6. If users didn’t configure the pulse signal system, and then P2 parameter
setting can be 0. The setting range of P2 should be between 0-6, hold button (UP)
shortly or button (DOWN) for selection.

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Under P2 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 P2 parameter setting, hold button (SW) shortly to save the
current set values and enter P3 parameter setting interface.
Please Note：when P2 parameter is set to be 0, for the built-in clutch motor, there will
be the following defects, when the internal motor rotors stop or the internal rotor speed is
lower than the outer rotor speed, then the speed displayed on the meter is inaccurate!
○P3 Power-assist Control Mode Setting
Enter P3 parameter setting interface after P2 parameter setting is finished, and P3
parameter column flashes.
P3 parameter setting interface
P3 is for power-assist control mode setting, when P3 parameter setting is1, power-
assist control mode is gear 5 of "imitation torque control" mode, when P3 parameter
setting is 0, power-assist control mode is gear 5 of "speed control" mode. P3 parameter
needs to be determined according to the distributed function of the controller, its setting
range is 0 or 1, hold button (UP) shortly or button (DOWN) for selection. P3
parameter setting method is the same to that of P2.
○P4 Throttle Startup Setting
Enter P4 parameter setting interface after P3 parameter setting is finished, P4
parameter column flashes.