1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your varstrom DZ40 Intelligent LCD Mini Display. Designed for electric bicycles, this waterproof display offers essential ride data in a compact and user-friendly interface. Please read this manual thoroughly before using the product to ensure proper function and safety.
Figure 1: DZ40 Display on an ebike handlebar.
2. Safety Information
- Warning: Please mind potential fire risk and strictly follow the instruction manual for charging and storage of your ebike battery.
- Do not plug in or unplug the display when the ebike's power is on. Always ensure the power is off before connecting or disconnecting the display.
- Avoid collisions and impacts to the display unit.
- Protect the display's membrane to maintain its water-resistant performance.
- Do not attempt to reset parameters if the display is not working correctly without consulting the troubleshooting guide or support.
3. Product Overview
The DZ40 display is a compact and intelligent LCD unit designed for electric bicycles, offering essential information at a glance. Its minimalist design ensures ease of use and integration with your ebike setup.
Key Features:
- Simple and lightweight design, suitable for left-side handlebar mounting.
- High brightness white digital tube display for clear visibility.
- IP65 waterproof rating for excellent outdoor performance.
- Serial communication interface for convenient maintenance.
- Compact 1.68" LCD screen.
- Supports 0-5 PAS (Pedal Assist System) modes.
- English language display.
Display Interface:
Figure 2: Minimalist Display Interface.
- Headlight Power On: Indicates if the ebike's headlight is active.
- Error: Displays error codes or warnings.
- Speed Display: Shows current riding speed.
- PAS (Pedal Assist System) 0-5: Indicates the current level of pedal assistance.
- Battery Indicator: Shows the remaining battery charge.
4. Specifications
Figure 3: DZ40 Display Specifications.
| Attribute | Value |
|---|---|
| Model | DZ40 |
| Type | Display (LCD) |
| Nominal Voltage | DC 24V/36V/48V |
| Rated Current | 18mA/36V |
| Shutdown Leakage Current | < 1uA |
| Screen Size | 1.68" LCD |
| Display Type | White digital tube display |
| Communication Mode | UART (default) |
| Support Modes | 0-5 PAS |
| Operating Temperature | -20℃ ~ 60℃ |
| Storage Temperature | -30℃ ~ 80℃ |
| Waterproof Grade | IP65 |
| Holder Diameter | φ22.2mm |
| Headlight Indicator | Yes |
| Push Power Assist | 6KM/H |
| Language | English |
5. Installation
Compatibility:
The DZ40 display is specifically designed for BAFANG electric bike motors that utilize the UART 5.0~5.8 protocol. It is compatible with BAFANG BBS01B/BBS02B/BBSHD Mid Drive Motors, BAFANG Hub Motors, and SUTTO Hub Motors.
Figure 4: Motor and Connector Compatibility.
Important: Ensure your motor uses a UART Protocol 5PIN Female Connector. The display is NOT compatible with UART Protocol 5PIN Male Connectors or CAN Protocol 5PIN Female Connectors, nor with other brands or models of BAFANG motors not listed as compatible.
Mounting the Display:
- Install the DZ40 display on the left side of your ebike's handlebar. The display is designed for handlebars with a diameter of φ22.2mm.
- Adjust the display's position for optimal visibility and ergonomic access to controls.
Figure 5: Display and Cable for Installation.
Wiring Connection:
- Before connecting, ensure the ebike's power is completely OFF.
- Connect the display's 5-pin female connector to the corresponding 1T4 cable from your motor.
Figure 6: Cable Parameters and Wiring Diagram.
Note on Wiring: The provided image illustrates the wiring diagram for the display cable connecting to the 1T4 cable. It is crucial to confirm with your motor's seller that your cable matches this wiring diagram. If the wiring diagram is different, the display will not function correctly.
| Female 5 Pins (Display Connector) | Male 5 Pins (EB1T4 Connector) |
|---|---|
| Red: Positive | Brown: Positive Pole of Power |
| Yellow: RXD | Yellow: Date Acceptance |
| Green: TXD | Green: Date Acceptance |
| Orange: Display Lock Wire | Orange: Lock Wire |
| Black: Ground | Black: Earth Wire |
6. Operation
Once the display is correctly installed and connected, you can power on your ebike system. The DZ40 display will automatically show key riding information.
Display Functions:
- Power On/Off: Typically controlled by your ebike's main power button. The display will activate upon system power-up.
- Speed Display: Your current speed will be shown prominently.
- PAS Level Adjustment: Use the buttons on the display or your ebike's control panel to cycle through the 0-5 Pedal Assist System levels. Level 0 usually means no assist, while Level 5 provides maximum assist.
- Headlight Control: An indicator on the display will show if your ebike's headlight is on. Headlight control is usually managed via a separate button on your ebike's handlebar.
- Battery Indicator: Monitor your remaining battery charge to plan your rides effectively.
- Error Indicator: If an issue occurs, an error symbol will appear. Refer to the Troubleshooting section for guidance.
Figure 7: Display in Use, showing key indicators.
7. Maintenance
To ensure the longevity and optimal performance of your DZ40 display, follow these maintenance guidelines:
- Cleaning: Gently wipe the display screen with a soft, damp cloth. Avoid using abrasive cleaners or solvents that could damage the screen or casing.
- Protection: While the display is IP65 waterproof, avoid submerging it in water or exposing it to high-pressure water jets.
- Storage: When not in use for extended periods, store the ebike and display in a cool, dry place, away from direct sunlight and extreme temperatures.
- Inspection: Periodically check the cable connections for any signs of wear or damage. Ensure all connections are secure.
8. Troubleshooting
If you encounter issues with your DZ40 display, consider the following common problems and solutions:
- Display Not Turning On:
- Ensure the ebike's main power is on.
- Check all cable connections between the display and the motor/controller. Ensure they are securely plugged in and undamaged.
- Verify that the motor and display are compatible (refer to Section 5: Installation).
- Incorrect Readings (Speed, PAS, Battery):
- Check for loose or damaged sensor wires (if applicable to your ebike setup).
- Ensure the display's communication protocol matches your motor (UART).
- Error Indicator Appears:
- The error symbol indicates a system fault. Consult your ebike motor's manual for specific error codes if available.
- Do not attempt to reset parameters if the display is not working, as this may worsen the issue.
- Display Not Responding to Button Presses:
- Check for physical damage to the buttons or display unit.
- Ensure the display is securely mounted and not experiencing intermittent connection issues.
If these steps do not resolve the issue, please contact customer support for further assistance.
9. User Tips
- Compatibility Check: Before purchasing or installing, always double-check that your ebike motor is a BAFANG model (BBS01B, BBS02B, BBSHD Mid Drive, or BAFANG/SUTTO Hub Motor) and uses the UART 5.0~5.8 protocol with a 5PIN Female Connector. This is a common point of confusion for users.
- Wiring Verification: Pay close attention to the wiring diagram provided in this manual. A mismatch in wiring can prevent the display from functioning. If unsure, consult with your motor's supplier.
- Handlebar Fit: The display is designed for a φ22.2mm handlebar. Ensure your handlebar matches this size for a secure fit.
10. Warranty and Support
Warranty:
The DZ40 display comes with a 30-day quality warranty, covering manufacturing defects. This warranty does not cover physical damage or issues arising from incorrect operation or installation.
Customer Support:
For any technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact the seller, Greenergy Global Store. Provide your product model (DZ40) and a detailed description of the issue for efficient support.