ELING Universal Truck Speedometer and Odometer

1. Product Overview

This electronic speedometer is designed for trucks, working seamlessly with both Inductive and Hall Effect Speed Senders. Its connectors are compatible with modern electronic tachographs, making it a versatile solution for various vehicle applications. It features a special electronic speedometer with an odometer and trip odometer displayed on an LCD screen.

Main Features:

• Digital Speedometer
• Programmable Mileage
• Programmable Calibration (pulse/km)
• Programmable Overspeed Buzzer Alarm
• Supports Hall Effect Speed Sensors
• Standard Installation Diameter: 140mm
• Speed Range: 0-125 km/h
• Odometer Range: 0-999999.9 km
• Compatible with 12/24V DC power systems

Figure 1: Front view of the circular panel speedometer.

Figure 2: Front view of the square panel speedometer (optional faceplate).

2. Installation

Mounting:

The speedometer is designed for a standard mounting hole of 140mm, which is equivalent to common tachograph installations. Ensure sufficient space behind the panel for the unit and wiring connections.

Wiring Connections:

The speedometer comes with two 8-pin connectors: one white for power and one yellow for signal. All connectors are compatible with the ISO 16844-1 standard. Please refer to the detailed wiring diagram below for proper connection.

Figure 3: Detailed diagram for dimensions, socket directions, and operation steps. Refer to the 'Socket Directions' section in the image for pin assignments.

Figure 4: Included connectors and terminals for wiring.

General Wiring Guidelines:

• Power Connector (White 8-pin): Connect to vehicle's power supply (e.g., +12V/24V, Ground, Ignition).
• Signal Connector (Yellow 8-pin): Connect to the speed sensor output and any compatible tachograph inputs.
• Ensure all connections are secure and insulated to prevent short circuits.

3. Operation

The speedometer features three control buttons for setting various parameters. Refer to Figure 3 for visual guidance on the LCD display during operation.

3.1. Resetting Trip Odometer:

1. With the speedometer powered on, press and hold the 'Set' button for approximately 3 seconds.
2. The LCD display will show '0.0'.
3. Release the button. The trip odometer will be reset to zero.

3.2. Setting Total Mileage:

1. Press and hold the 'Mode' button for approximately 3 seconds to enter the programming menu. The LCD will display 'SET'.
2. Press the 'Mode' button repeatedly until 'ODO' (Odometer) is displayed.
3. Press the 'Set' button to enter the total mileage setting mode.
4. Use the 'Set' button to move between digits and the 'Mode' button to increase the value of the selected digit.
5. Once the desired total mileage is set, press and hold the 'Mode' button for 3 seconds to save the setting and exit.

3.3. Calibrating Speed Ratio (Pulse/km):

The calibration is programmable to ensure accuracy across different vehicle types and speed sensors.

1. Press and hold the 'Mode' button for approximately 3 seconds to enter the programming menu. The LCD will display 'SET'.
2. Press the 'Mode' button repeatedly until 'CAL' (Calibration) is displayed.
3. Press the 'Set' button to enter the calibration setting mode.
4. The LCD will display 'PULSE'. This represents the number of pulses per kilometer.
5. Use the 'Set' button to move between digits and the 'Mode' button to increase the value of the selected digit (range: 1000-65535).
6. Once the desired pulse/km value is set, press and hold the 'Mode' button for 3 seconds to save the setting and exit.

3.4. Setting Overspeed Buzzer Alarm:

This feature provides an audible alarm when the vehicle exceeds a set speed limit.

1. Press and hold the 'Mode' button for approximately 3 seconds to enter the programming menu. The LCD will display 'SET'.
2. Press the 'Mode' button repeatedly until 'ALARM' is displayed.
3. Press the 'Set' button to enter the overspeed alarm setting mode.
4. The LCD will display 'ALARM' followed by the current alarm value.
5. Use the 'Set' button to move between digits and the 'Mode' button to increase the value of the selected digit (e.g., 100 KM/H).
6. Once the desired overspeed alarm value is set, press and hold the 'Mode' button for 3 seconds to save the setting and exit.

4. Maintenance

To ensure the longevity and optimal performance of your ELING speedometer, follow these simple maintenance guidelines:

• Cleaning: Use a soft, damp cloth to clean the display and housing. Avoid abrasive cleaners or solvents that could damage the plastic or screen.
• Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent readings or malfunctions.
• Environmental Conditions: While designed for a wide operating temperature range (-40°C to +85°C), avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods when possible.
• Sensor Check: If speed readings become erratic, inspect the speed sensor and its wiring for any damage or obstructions.

5. Troubleshooting

If you encounter issues with your speedometer, try the following troubleshooting steps:

No Display/Power:

• Check the power connections (white 8-pin connector) to ensure they are correctly wired to a 9-36V DC power source and ground.
• Verify that the vehicle's ignition is on if the speedometer is wired to an ignition-switched power source.
• Inspect fuses in the vehicle's electrical system that supply power to the speedometer.

Inaccurate Speed/Odometer Readings:

• Ensure the speed sensor is correctly installed and functioning.
• Check the signal connections (yellow 8-pin connector) from the speed sensor to the speedometer.
• Recalibrate the speed ratio (pulse/km) as described in Section 3.3. Incorrect calibration is a common cause of inaccurate readings.
• Verify that the speed sensor type (Inductive or Hall Effect) is compatible with the speedometer.

Overspeed Alarm Not Functioning:

• Ensure the overspeed alarm value is set correctly as described in Section 3.4.
• Test the alarm by exceeding the set speed in a safe and controlled environment.

Buttons Unresponsive:

• Ensure the unit is powered on.
• Gently press the buttons to ensure they are not stuck.
• If unresponsive, try cycling the power to the unit.

6. Specifications

Figure 5: Dimensional drawing of the speedometer.

7. Package Contents

The following items are included in your product package:

• 1x ELING Speedometer (Model: TD140ATC)
• 1x White 8-pin Power Connector
• 1x Yellow 8-pin Signal Connector
• 1x Set of 16 Terminals

Figure 6: Contents of the product package.

8. User Tips

While no specific user tips were available from reviews, here are some general recommendations for optimal use:

• Always ensure the vehicle's battery is disconnected before performing any wiring to prevent electrical damage or injury.
• Double-check all wiring connections against the provided diagram to avoid incorrect functionality.
• Perform a test drive after installation to verify accurate speed and odometer readings and adjust calibration if necessary.
• Keep the display clean and free from dust or debris for clear visibility.

9. Warranty and Support

For warranty information, technical support, or any inquiries regarding your ELING speedometer, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.