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Motorcycle/Scooter Computer
MD-052-2XX/3XX User Manual
Thanks for purchasing the Motorcycle/Scooter computer.
The user manual is designed for MD-052-2XX and MD-052-3XX series,
functions and descriptions with “ ** ” are for MD-052-2XX only, functions
and descriptions with “ * ” are for MD-052-3XX only.
Different LED combinations have different model numbers. You may find
the above photo has different LED indicators from your computer; the photo
above is for reference only.
1. Tachometer Scale
2. Bar Tachometer
3. Speed & MAX speed
4. Other functions display
5. Push Button
PANEL DESCRIPTIONS
FEATURES
SPECIFICATIONS
FUNCTIONS
Multi-functional LCD Motorcycle/Scooter computer displays speedometer,
bar-graphic tachometer, ** fuel gauge or * temperature gauge, and one of
other function simultaneously.
Integrates backlight and 6 LED lights for different purpose indicators.
Built-in bar-graphic and digital tachometers and resettable shift warning
indicator.
On some models the backlight can be controlled separately from the ignition
power.
Allows end user to adjust odometer when the odometer is less than 30km /
18.6 miles
Fast processor so can connect to pulse type gearbox speed sensors.
**Fuel gauge in/-100Ω, 250Ω and 510 Ω options for fuel meter input
resistance, as well as “fuel gauge off” mode.
*MD-052-3XX series includes a temperature sensor for temperature gauge.
Odometer and total riding timer are stored in memory, even when the power
is off.
Universal wheel circumference setting from 1mm to 3999mm.
Includes speed sensor, magnet, RPM sensing wire, fitting kit, wiring harness
and *temperature sensor.
Excellent water resistant, anti-vibration structure and noise immunity design.
Power Input
DC 8-18V
Speed Sensor
Reed or 2 wires Hall-effect Sensor
Tachometer input
CDI or Ignition Coil Signal
Wheel circumference setting
1mm-3999mm (1mm increment)
Temperature sensor PT1/8” thermistor sensor
Dimensions
Ø52*45.1mm
Operation Temperature: -20°C - +80°C (inner temperature)
Storage Temperature: -30°C - +85°C (Inner temperature)
Functions
Symbol
Specifications
MD52-2XX MD52-3XX
Bar tachometer
Digital Tachometer
Max. RPM
Speedometer
Trip Meter
Odometer
Maximum Speed
Average Speed
12/24 Hour Clock
Total Hour Meter
Riding Timer
Total Riding Timer
**Bar-Fuel meter
Volt meter
*Temperature meter
*MAX Temperature
*Bar Temperature meter
12,000 rpm,
100-19,900 rpm, 100rpm increment
100-19,900 rpm, 100rpm increment
2.4-300.0 km/h (187.5MPH)
0.0-999.9 KM/Miles
0 - 999999 KM, 0-624999 Miles
2.4-300.0 KM/h (187.5 MPH),
2.4-300.0 KM/h (187.5 MPH),
0:00’00” – 11H59’59”/23H59’59”
0-9999H59’
0-99H59`59``
0-9999H59’,
1-7 bars, +/-100, 250, 510Ω and off mode
.
8-18VDC
0 °
C
-180
°
C
/ 32 °
F
-356 °
F
0 °
C
-180
°
C
/ 32 °
F
-356 °
F
1-7 bars and Off mode.
RT
HRTT
TT
RPM
MAX RPM
ODO
TRIP
MAX
AVG
V
Km/h / MPH
MAX °C or °F
°C or °F
Fuel Bar
7
6
5
4
3
2
1
0-Flash
100Ω
0~10
11~20
21~35
36~45
46~60
61~75
76~90
91~100
250Ω
0~25
26~50
51~85
86~110
111~150
151~200
201~230
231~250
510Ω
0~50
51~100
101~180
181~230
231~300
301~380
381~460
461~510
-100Ω
100~90
89~75
74~60
59~45
44~35
34~20
19~10
9~0
-250Ω
250~230
229~200
199~150
149~110
109~85
84~50
49~25
24~0
-510Ω
510~460
459~380
379~300
299~230
229~180
179~100
99~50
49~0
: Bar Graphic Tachometer
1. The bar graphic tachometer is always displayed.
2. It displays bar graphic tachometer up to 12,000RPM.
RPM: Digital Tachometer
1. It displays digital tachometer up to 19,900RPM and displays
19,999rpm when tachometer is over 20,000rpm.
2. Tachometer signal can pick up from either CDI or Sparking plug we
suggest to circle round 2-5 turns on CDI or Plug cable.
3. It has 2 wires to pick up RPM signal, the yellow wire is to connect to
Plug, and blue wire is for signal from ECU or Ignition coil, only use 1
of the wires.
Shift Warning RPM
1. The function enables you to set up a shift warning RPM.
2. Bar-graphic tachometer flashes when RPM reaches setting value,
and stop flash after you shift gear.
MAX RPM: Maximum Tachometer
1. MAX RPM is displayed at the 2nd row.
2. Displays highest tachometer achieved after last Reset operation.
SPD: Speed Meter
1. Speed meter display is at the 1st row of the screen
2. Displays speed meter up to 300.0 Km/H or 187.5 mph.
MAX Km/h or MPH: Maximum Speed Meter
1. MAX is displayed at the 1st row.
2. Displays highest speed achieved after last Reset operation.
AVG: Average Speed Meter
1. AVG is displayed at the 1st row.
2. It calculates average speed from last RESET. The AVG is calculated
from TRIP be divided by RT.
TRIP: Trip Meter
1. TRIP function accumulates trip distance from last RESET as long as
bike is being ridden.
2. Display is on the 2nd row of screen.
ODO: Odometer
1. ODO accumulates total distance traveled.
2. ODO data is adjustable when it is less than 30km (18.6 Miles), after
that it stored in memory and cannot be reset.
HRTT: Total Hour Meter
1. Calculates total engine operation time since installation.
2. Counting automatically begins with engine starting.
3. HRT data is stored in memory, and cannot be reset.
RT: Riding Timer
1. Calculates total operation time since last RESET operation.
2. Counting automatically begins with movement.
TT: Total Riding Timer
1. Calculates total operation time since installation.
2. Counting automatically begins with movement.
3. TT data is stored in memory, even when the power is off.
: 12/24 hour Clock
1.Displays 12 or 24hour current time.
**
: Fuel Meter (Only for MD-052-2XX series)
1. Has 7 bars to indicate how much fuel remains.
2. Built-in 100, 250, 510Ohm, oFF, -100, -250 and -510Ωfuel sender
resistance, the fuel bars will disappear when you select “oFF” mode.
3. The full bars are low resistance and empty bar is high resistance for
100, 250 and 510ohm; -100, -250 and -510 ohm are the inverse.
4. Last bar and LED flash to indicate low fuel level
7. Shift warning indicator
8. Indicator of ** low fuel or *over
temperature
9. LED indicators
6. ** Fuel bar or *Thermo meter
*
INSTALLATION & PARTS
* ˚C or ˚F: Temperature Meter
1. It measures and displays from 0
℃
to 180
℃
(32
℉
-356
℉
).
2. It displays -L-
℃
or -L-
℉
when temperature is lower than 0
℃
or disconnected
temperature sensor, and displays -H-
℃
or –H-
℉
when temperature is over
180
℃
or 356
℉
.
3. The bar-temperature and digits of temperature and temperature LED
indicator flash when the thermo sensor detects temperature higher than the
maximum preset temperature.
4. The 4th bar of the temp bar chart counting from the bottom turns on when
temperature reaches the preset warning temperature, each +/-15
℃
lights
on/off a bar based on the 4th bar.
Speed decimal option:
1.User can decide to display speed to 1 or 0.1 mph / km/h.
2.Follow the item 10 of set up mode to option the decimal of speedometer.
V: Digital Voltage Gauge
It checks bike’s battery and charging systems health and displays battery /
charging voltage.
*MAX ˚C or ˚F: Maximum Temperature
1. It displays at the 1st row of LCD.
2. Displays highest temperature achieved since last Reset operation.
Main Unit Installation:
Spring Washer
Washer
Rubber Pad
Bracket
Fixing Screw Nut
Main Unit
RPM sensor mounting: RPM Input,
1.Connect either the yellow or white wire to sense the RPM signal.
2.The yellow wire can be wrapped around the spark plug lead.
a.Signal intensity from ignition coil is dependent on vehicle type.
b.Coil 2-5 turns around spark plug lead, with more turns creating
steadily stronger signal, fewer turns creating weaker signal.
3.If the yellow wire be wrapped around the spark plug lead works not
stable, please try to connect the white wire to either the ECU rev
counter output or to the primary side of the coil.
Speed Sensor Mounting:
ACEWELL has several speed sensors; the unit may include one of
them. If the model is intended to be connected to a gearbox
electronic speed output to obtain the speed reading, no speed
sensor will be included
Reed Speed Sensor and Magnet:
1. This sensor is universal sensor for motorcycle, find a rotating
part to install magnet (for example disk, sprocket or
driveshaft) and a location to install the sensor where it can be
aligned to the magnet.
2. Align the center of the magnet to either of the sensor marking
lines or the end of the sensor. The magnet must not travel
down the body of the sensor
Hall Effective Speed Sensor and Magnet:
1. This is universal sensor for ATV or motorcycle front or rear wheel
installation. For some fitments an accessory speed sensor holder may
need to be purchased.
2. Find a rotating part to install magnet (for example disk, sprocket or
driveshaft) and a location to install the sensor where it can be aligned
to the magnet
3. Align the center of the magnet to center of side face of the sensor.
4. Make sure the gap between the magnet and the sensor is within 5mm.
Max. 8mm
Vibration Direction
sensor
Max. 8mm
Vibration Direction
sensor
Specific Hall sensors:
Cable drive adaptors for most bikes originally fitted with cable
driven speedometers or odometers are available. When using
these cables it is necessary to divide the circumference setting by
the number of rotations of the cable per rotation of the wheel.
*Thermo Sensor and Sensor Tube:
1. The unit includes a water temperature sensor; you may have to
purchase a suitable water pipe temperature sensor tube to install
the sensor on some bikes.
2. Cut the water pipe, insert the temperature tube into the pipe and
secure it by attached pipe clamps.
3. Screw the sensor into the tube.
4. If your vehicle is fitted with a thermostat that stops water
flowing to the radiator when the engine is cold, you will not get a
reading until the thermostat opens.
5. Custom sensors are available for carbureted bikes to replace the
original sensor.
3. Installing the sensor parallel to the vibration direction creates
optional anti-vibration effect.
4. Make sure the gap between the magnet and the sensor is
within 8mm.
10R-0312653
Left direction indicator/Green
Main-beam headlamp/Blue
Right direction indicator/Green
Hazard Warning/ Red
Parking/Green
Direction indicator/Green
Engine oil / Red
Neutral Gear /Green
Reverse Gear /Red
Drive Gear /Green
Engine coolant temperature/ Red
P
D
R
N
Rear fog lamp/Amber
Flash Trailer/Green
Engine in out of use/ Red
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