KUNTENG KT-LCD8HP User manual

用户手册
User Manual
KT-LCD8HPE-Bike Special Meter
WWW.SZKTDZ.COM

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 1 -
Contents
Preface……………………………………………………………………………..………. 4
Outlook and Size…………………………………………………………………………... 4
Meter Dimension …………………………………………………………………… 4
Button Box Dimension………………………………………………………………..5
Main Material and Color………………………………………………….………...... 5
Wiring Schematic……………………………………………………………….……. 5
Installation Instruction……………………………………………………………….…….. 5
Φ 31.8 handlebar diameters install icon………………………………………..….…5
Φ 22.2 handlebar diameters install icon……………………………………….….…. 6
Physical installation icon............................................................................................. 6
Function Overview……………………………………………………………………..….. 6
Display Content…………………………………………………………………….….…... 7
Button Definition…………………………………………………………………….….…. 7
Normal Operation………………………………………………………………………...... 8
On/Off…………………………………………………………………………........... 8
Display Interface………………………………………………………….….……..... 8
Display of Turned on Throttle……………………………………………………....... 9
Display of Pas……………………………………………………………………..... 10
PAS Ratio (or Throttle) Gear Switch……………………………….……………. 10
Push Function…………………………………………………………..…………… 10
Cruise Function…………………………………………………………………...…11
Turn On/Off Backlight…………………………………………………….………... 11
Brake Status Display…………………………………………..…………….……… 12
Battery Capacity Indicator……………………………………..………………..........12
Motor Power and Temperature.....................................................................................13
Environment Temperature…………………………………………………………... 13
Single Data Clearing……………………………………………………………….... 14
Automatic Prompt Interface……………………………………………………..….. 14

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 2 -
Error Code Display…………………………………………………….…........ 15
Motor Operating Temperature Alarm……………………………………......... 15
User Project Setting……………………………………………………………………..... 15
General Project Setting…………………………………………………………………… 16
Maximum Trip Speed………………………………………………………….......... 16
Wheel Diameter…………………………………………………………………..…. 16
Metric and Imperial Units…………………………………………………………... 17
P Parameter Setting……………………………………………………………….…….... 18
P1 Motor Characteristic Parameter Setting ............................................................... 18
P2 Wheel Speed Pulse Signal Setting ....................................................................... 18
P3 Power Assist Control Mode Setting ...................................................................... 19
P4 Throttle Startup Setting ..................................................................................... 20
P5 Power Monitoring Setting ..................................................................................... 20
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 Motor Operating Temperature Display Setting .................................................... 28
C9 Power-on Password Setting .................................................................................. 28
C10 Automatic Restore Default Setting ..................................................................... 30
C11 Attribute Selection Setting .................................................................................. 30
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
C15 Push-assist Speed Parameters Setting...................................................................35
L parameters Setting. ...................................................................................................35

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 3 -
L1 parameters Setting. .................................................................................................35
L2 parameters Setting. .................................................................................................36
L3 parameters Setting. .................................................................................................37
L4 parameters Setting. .................................................................................................37
Exit Parameter Setting............................................................................................. 38
Parameter Copy .................................................................................................................. 38
User Setting Note ............................................................................................................... 40
Version Information……………………………………………………………………… 40

ELECTRIC BICYCLE METER KT—LCD8H 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

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 5 -
Dual Bracket Mounting Dimension
○Button Box Dimension
○Main Material and Color
PC material is mainly used for KT-LCD8H P meter and button box housing, and the
housing color is black.
○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.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 6 -
○Φ 31.8 handlebar diameters install icon
○Φ 22.2 handlebar diameters install icon
○Physical installation icon
Function Overview
KT-LCD8HP 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

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 7 -
(ODO));
◇Display of turned on throttle (THROTTLE);
◇Display of turned on PAS (ASSIST)
◇Power assistant ratio (or throttle) gear (ASSIST) switch;
◇6KM/H power assistant push ( ) function;
◇Cruise function (CRUISE, );
◇Battery capacity indicator ( );
◇Real-time battery voltage (VOL) display;
◇Motor power (MOTOR W) and temperature (MOTOR ℃) display;
◇Brake status 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.
Button Definition
KT-LCD8H P meter adopts the structural form with part design between the main part
and operating buttons.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 8 -
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.
○Display Interface
Turn on the meter, it will enter display 1, as below picture shows.
Display 1
In display 1, hold button (SW) shortly to enter display 2.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 9 -
Display 2
In the riding mode after within 5 seconds, display 2 automatically jump to display 1
Display 3
In display 2, hold button (SW) shortly, meter will enter display 3, and so on.
In each display interface, if you hold button (SW) long, the meter will be
powered-off together with that of the controller.
○Display of Turned on Throttle
Rotate the throttle control handle under normal operating of the meter, the display
interface shows the logo of turned-on throttle, see the Figure below.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 10 -
○Display of Turned on PAS
Turn on PAS under normal operating of the meter, the display interface shows the logo of
turned-on pas, see the Figure below
○PAS Ratio (or throttle) Gear Switch
Under normal operation, hold button (UP) or button (DOWN)shortly
to switch the power assist ratio (or throttle) gear (ASSIST), changing motor output power.
Switching range is 0-5 gear, gear 1 is for the lowest power, and gear 5 is for the highest
power.
At every startup, the meter will automatically restore gear of (this can also be
configured as required by users) when it was shut down at last time. 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

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 11 -
button (DOWN)for a long time, 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 cruise function is
enabled, 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 press any
button to revoke cruise function.
○ Startup Backlights and Headlights
Hold button (UP) long, the backlights turns on 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.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 12 -
○Brake status display
Under normal operation, the brake status indicator( )will display when the vehicle
brakes, as the below picture shows.
○Battery Capacity Indicator
The meter can automatically identify 24V, 36V, 48V battery capacities when it is
supporting used with the specified controller. When the battery capacity is over 70%, the
four section of power are all light, 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.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 13 -
Voltage shortage flashes
Battery capacity indicator
○Motor Operating Power and Temperature
Under the riding status of vehicle, the motor real time running output power and
temperature can be known via the meter displays.
○ Environment Temperature
After startup, the environment temperature will be displayed in environment
temperature display column.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 14 -
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
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.
Under the status of data flashing, if there were no operations on the data within 5
seconds, the meter will automatically return to display1 and the original record
content will be preserved.
○Automatically Prompt Interface
Error Code Display：
If the fault is rectified, automatically return to the normal interface.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 15 -
Error Code & Definition Table：
Error Code
Definition
Motor position sensor fault!
illegal signal for hall sensor
Motor or controller short circuit fault!
there is a short-circuit fault occur
THROTTLE fault!
illegal signal for throttle
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-LCD8HP meter user setting project：
◇General project setting
◇P parameter setting
◇C parameter setting
◇L parameter setting
Under power off status, hold button long (SW), the meter is turned on. It will
enter parameter interface Within 5 seconds after boot-up, by holding button (UP)
and button (DOWN) simultaneously for about 2 seconds
User can move to any parameter by pressing button (UP) and button
(DOWN), to enter or quit parameter setting by pressing 键（SW）

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 16 -
Unter parameter setting interface, holding 键（ SW）long for about 2seconds to
quit and the value will be save
If no operation within 1 minute, the meter will return to main interface and the last
value will be saved
General Project Setting
○Maximum Trip Speed
Max speed setting LIM, hold button shortly (SW) when the cursor before LIM,
the value flash. To setting max speed by press button (UP) or button
(DOWN). The default value of max speed was set according to user's requirement.
The motor will stop, when the speed exceeds the max speed which has been set before
After finishing the maximum riding speed setting, press button shortly (SW) ,
to return to parameter setting interface
○Wheel Diameter
Under parameter setting interface, move cursor to DIM and press button
shortly (SW), the value flashes. Press button (UP) or button (DOWN) to
choose the corresponding wheel diameter specification to a selected vehicle. The selection
range of wheel diameter specifications are 15 species such as
5,6,8,10,12,14,16,18,20,23,24,26,27.5,700c, 28 and 29 inches.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 17 -
After finishing the wheel diameter setting, press button (SW) shortly to return
to parameter setting interface
○Metric and Imperial Units
Under parameter setting interface, move cursor to UNT and press button
shortly (SW), the value flashes. Press button (UP) or button (DOWN) shortly
to choose within the range of 0-3.
Definition Table of Metric/Imperial Units：
Code
Speed
Mileage
Ambient temperature
0
Km/h
Km
℃(Centigrade temperature)
1
MPH
Mil
℃(Centigrade temperature)
2
Km/h
Km
℉（Fahrenheit）
3
MPH
Mil
℉（Fahrenheit）

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 18 -
After finishing the metric/imperial units setting, press button shortly (SW) to
return to parameter setting interface
P Parameter Setting
○ P1 Motor Characteristic Parameter Setting
P1 is motor characteristic parameter setting, P1 = motor gear reduction ratio×number
of motor magnet pieces, just rounding if there’s any decimal.
Under parameter setting interface, move cursor to P1 and press button shortly (SW), the
value flashes. press button (DOWN) button (UP) or button (DOWN) for
selection within the range of 1-255.
After finishing P1 parameter setting, press button to return to parameter setting
interface.
○ P2 Wheel Speed Pulse Signal Setting
Under parameter setting interface, move cursor to P2 and press button shortly (SW), the value
flashes.

ELECTRIC BICYCLE METER KT—LCD8H Product User Manual
- 19 -
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.
After finishing P2 parameter setting, press button (SW) to return the 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
Under parameter setting interface, move cursor to P3 and press button shortly (SW), the value
flashes.
P3 is power assist control mode setting, when P3 parameter setting is1, power assist