Fardriver DKD LCD Speedometer Display User Manual

Introduction

This manual provides essential instructions for the installation, operation, and maintenance of your Fardriver DKD LCD Speedometer Display. Please read this manual thoroughly before use to ensure proper function and longevity of the product.

Important Compatibility Note:

This display is designed for use with ONE-LIN and CAN-BUS communication protocols and is exclusively compatible with EM controllers and Fardriver controllers. Compatibility with other controller types is not guaranteed and may result in improper function or damage.

Safety Precaution:

Always ensure the battery is turned off before connecting or disconnecting the display. Failure to do so may cause damage to the display unit.

Setup and Installation

Follow these steps for proper installation of your DKD LCD Speedometer Display.

1. Physical Installation

Mount the display securely to your electric bicycle or scooter using the provided bracket. Ensure the display is positioned for optimal visibility during operation.

Image 1: Rear view of the display showing the mounting bracket. The bracket allows for secure attachment to the vehicle.

Image 2: Front view of the display unit, illustrating the screen layout and physical dimensions.

2. Wiring Connection

Connect the display to your controller system using the provided wiring harness. Refer to the wiring diagram below for correct pin assignments. Remember to turn off the battery before connecting.

Image 3: Detailed wiring diagram for the DKD Speedometer, indicating connections for various functions including CAN-Bus, ONE-LIN, lighting, and power.

Image 4: Rear view of the display with the wiring harness connected, illustrating the physical connection point.

Operating Instructions

The DKD LCD Speedometer Display features a user-friendly interface with customizable settings accessible via a password-protected menu. Follow these steps to navigate and adjust settings.

Accessing the Settings Menu

1. After powering on, allow the display to complete its self-test sequence.
2. Press and hold the left button for 10 seconds to enter the background settings menu.
3. Enter the required password to proceed.
4. Use the left button to adjust data values and the right button to shift between settings or confirm selections.

Password-Protected Settings

• Password 153: Perimeter, Motor Pole Pairs, and Offset Settings
  • Set the wheel perimeter in millimeters (mm). Default is 1413mm (for an 18-inch tire).
  • After setting the perimeter, long-press the right button to enter the motor pole pair number (PL). Default is 24-10 (24 pole pairs).
  • Adjust the offset value.
• Password 256: Gear Selection
  • Select between high/low gear (-2) or normal gear display (-0).
• Password 372: Clear Odometer (ODO)
  • This function allows clearing the odometer reading. Limited to 3 uses.
• Password 856: Voltage Selection
  • Select operating voltage: 48V, 60V, 72V, or 96V. This setting synchronizes with the battery grid display.
  • For lithium batteries, the State of Charge (SOC) is automatically detected. If the battery type is changed, the display must be powered off and on again for the new setting to take effect.
• Password 879: Fixed Voltage Calibration
  • Calibrate fixed voltage settings for 48V, 60V, 72V, or 96V, corresponding to the selected voltage setting.
• Password 824: Self-Input Voltage Calibration
  • Allows for manual input of voltage calibration values.
• Password 974: KMH/MPH Switch Setting
  • Toggle between Kilometers Per Hour (KMH) and Miles Per Hour (MPH) display units.
• Password 928: D/N Gear Light Setting
  • Configure the display of D (Drive) and N (Neutral) gear indicator lights. This can be turned off if only the LCD gear display is desired.
• Password 919: Full Voltage and Undervoltage Thresholds
  • Adjust the thresholds for full voltage and undervoltage warnings. The first value is full voltage, the second is undervoltage.

Maintenance

To ensure the longevity and optimal performance of your Fardriver DKD LCD Speedometer Display, follow these general maintenance guidelines:

• Cleaning: Gently wipe the display screen with a soft, damp cloth. Avoid using abrasive cleaners or solvents, which can damage the screen surface.
• Environmental Protection: Protect the display from extreme temperatures, direct prolonged sunlight, and heavy rain. While designed for outdoor use, excessive exposure can reduce lifespan.
• Connection Integrity: Periodically check all wiring connections to ensure they are secure and free from corrosion or damage. Loose connections can lead to intermittent operation or malfunction.
• Storage: If storing the vehicle for an extended period, ensure the display is clean and stored in a dry, temperate environment.

Troubleshooting

If you encounter issues with your DKD LCD Speedometer Display, refer to the following common troubleshooting steps:

• Display Not Powering On:
  • Check all power connections to ensure they are securely attached.
  • Verify that the vehicle's battery is charged and supplying power.
  • Confirm compatibility with your controller (EM or Fardriver controller only).
• Incorrect Speed/Distance Readings:
  • Access the settings menu (Password 153) and verify that the wheel perimeter and motor pole pair settings are correctly configured for your vehicle.
  • Ensure the speed sensor (if external) is properly installed and functioning.
• Display Flickers or Shows Erratic Data:
  • Check for loose or damaged wiring connections.
  • Ensure the display is receiving a stable power supply within its specified voltage range (48V-96V).
  • Verify that the communication protocol (ONE-LIN/CAN-Bus) is correctly configured and compatible with your controller.
• Cannot Access Settings Menu:
  • Ensure you are pressing and holding the left button for the full 10 seconds after the self-test.
  • Double-check the password entry.

If problems persist after following these steps, please contact Fardriver customer support for further assistance.

Specifications

Image 5: Dimensional drawing providing precise measurements of the display unit for installation planning.