Bafang DP C171.CAN Display User Manual
7.1 Important Notice
- If error information cannot be corrected per instructions, contact your retailer.
- The product is designed to be waterproof; avoid submerging it.
- Do not clean with steam jets, high-pressure cleaners, or water hoses.
- Use the product with care.
- Do not use thinners or solvents for cleaning, as they can damage surfaces.
- Warranty does not cover wear, normal use, and aging.
7.2 Introduction of Display
Model: DP C171.CAN BUS
Housing Material: PC and Acrylic
Button Material: Silicone
The label marking includes model number (e.g., DPC171CM10101.0) and a serial number (e.g., PD051305).
Note: Keep the QR code label attached to the display cable for potential future software updates.
7.3 Product Description
7.3.1 Specifications
- Rated voltage: 36V/43V/48V DC
- Operating temperature: -20°C to 45°C
- Storage temperature: -20°C to 50°C
- Waterproof: IP65
- Bearing humidity: 30%-70% RH
7.3.2 Functional Overview
- Speed display (real-time, top speed MAXS, average speed AVG), switchable between km and miles.
- Switching between km and miles.
- Battery capacity indicator.
- Automatic sensors for the lighting system.
- Brightness setting for backlight.
- Indication of performance support levels.
- Walk assistance function.
- Kilometer stand (single-trip distance, total distance).
- Display for remaining distance (depends on riding style).
- Motor output power indicator.
- Energy consumption indicator (CALORIES, if supported).
- Error messages view.
- Service menu access.
- USB charge function.
- Bluetooth function for connection to the Bafang Go APP.
- Compatibility with SEGMA heart rate monitors for real-time display.
7.4 Display Layout
The display shows various information:
- 1. Battery Capacity: Real-time battery level indicator.
- 2. Menu: Access to the menu system.
- 3. Service: Link to the service section.
- 4. Digital Speed Display: Shows current speed.
- 5. Speed Mode: Displays current speed, top speed (MAXS), and average speed (AVG).
- 6. Kilometer Stand: Shows daily kilometers (TRIP) and total kilometers (TOTAL).
- 7. Data Display: Shows data relevant to the current mode.
- 8. Walking Assistance: Indicates the walk assistance mode is active.
- 9. USB Charging Indicator: Shows when an external USB device is connected and charging.
- 10. Bluetooth Indicator: Shows Bluetooth connection status.
- 11. Light Indicator: Symbol indicating the light is on.
- 12. Error Indicator: Symbol indicating an error has occurred.
- 13. Error Code Indicator: Displays the specific error code.
- 14. Speed Unit: Displays the unit for speed (km/h or mile/h).
- 15. Unit Indicator: General unit indicator.
- 16. Remaining Distance (RANGE): Estimated distance remaining.
- 17. Support Level: Indicates the current motor assistance level (1-5).
Visual representation of the display:
[Display showing battery level, speed (e.g., 88.8 km/h), trip data (e.g., 888.88 km), support levels (1-5), and various indicators like WALK, USB, Bluetooth, Error.]
7.5 Key Definition
The display unit has the following buttons:
- [+] Button: Up / Increase value / Select option.
- [-] Button: Down / Decrease value / Select option.
- [i] Button: OK / Enter / Cycle through modes/information.
- [power-button] (Power Symbol): System On/Off.
7.6 Normal Operation
7.6.1 Switching the System ON/OFF
Press and hold the [power-button] for more than 2 seconds to turn the system on. Press and hold the [power-button] again for more than 2 seconds to turn the system off.
The display can automatically shut off after a set time (e.g., 5 minutes) if "Auto Off" function is enabled and the system is not in operation.
7.6.2 Selection of Support Levels
When the display is on, briefly press the [+] or [-] button (less than 0.5 seconds) to switch between support levels. Levels range from 1 (lowest) to 5 (highest). The system starts at level 1. Level null indicates no support.
Visual example of display showing support levels:
[Display showing speed (e.g., 0.0 km/h), trip data (e.g., 68.2 km), and support level indicator showing '1 2 3 4 5'.]
[Display showing speed (e.g., 17.8 km/h), trip data (e.g., 68.2 km), and support level indicator showing '1 2 3 4 5'.]
[Display showing speed (e.g., 25.0 km/h), trip data (e.g., 78.8 km), and support level indicator showing '1 2 3 4 5'.]
7.6.3 Selection Mode
Briefly press the [i] button (less than 0.5 seconds) to cycle through different display modes. These modes include:
- TRIP: Daily kilometers (TRIP)
- TOTAL: Total kilometers (TOTAL)
- MAXS: Maximum speed
- AVG: Average speed
- RANGE: Remaining distance
- W: Output power (for torque sensor systems)
- C: Energy consumption (for torque sensor systems)
Visual examples of display modes:
[Display showing TRIP mode with 68.2 km.]
[Display showing TOTAL mode with 3288 km.]
[Display showing MAXS mode with 25.0 km/h.]
[Display showing AVG mode with 18.8 km/h.]
[Display showing RANGE mode with 25.0 km.]
[Display showing Output Power (W) mode with 68C.]
[Display showing Energy Consumption (C) mode with 236.]
[Display showing another mode with 46.]
7.6.4 Headlights / Backlighting
Hold the [light-symbol] button (more than 2 seconds) to activate the headlight and backlight. Hold the same button again (more than 2 seconds) to turn them off.
The backlight brightness can be adjusted in the display settings under "Brightness". In dark environments, the display backlight and headlight may turn on automatically. If manually turned off, the automatic sensor function is deactivated. Manual activation is required after the system is switched on again.
Visual example of display with lights on/off:
[Display showing 17.8 km/h, 68.2 km, with light symbol active.]
[Display showing 17.8 km/h, 68.2 km, with light symbol inactive.]
7.6.5 Walk Assistance
Walk assistance can only be activated when the pedelec is stationary.
Activation: Briefly press the [-] button (less than 0.5S) until level null is displayed. Then, briefly press the [walk-symbol] button (less than 0.5S). The [walk-symbol] will be displayed. Hold down the [walk-symbol] button to activate walk assistance. The [walk-symbol] will flash, and the pedelec will move at approximately 6 km/h.
Upon releasing the button, the motor stops automatically and returns to level null (if no other function is activated within 5 seconds). If no speed signal is detected, it shows 2.5 km/h.
7.6.6 Battery Capacity Indication
Battery capacity is shown using ten bars. Each full bar represents a remaining capacity percentage. If the indicator frame blinks, it signifies that the battery needs charging.
Capacity Table:
| Bars | Charge in Percentage |
|---|---|
| 10 | ≥90% |
| 9 | 80%≤C<90% |
| 8 | 70%≤C<80% |
| 7 | 60%≤C<70% |
| 6 | 50%≤C<60% |
| 5 | 40%≤C<50% |
| 4 | 30%≤C<40% |
| 3 | 20%≤C<30% |
| 2 | 10%≤C<20% |
| 1 | 5%≤C<10% |
| Blinking | C<5% |
7.6.7 USB Charge Function
When an external USB device is connected to the display, the [usb-icon] appears, indicating the device will be charged. The maximum charging voltage is 5V, and the maximum charging current is 500mA.
Visual example of display with USB charging:
[Display showing TRIP mode with 0.0 km/h, 68.2 km, and the USB charging icon active.]
7.6.8 Bluetooth Function
The display can connect via Bluetooth to a mobile phone and communicate with the Bafang Go APP. Information about the motor, display, battery, sensors, and controller can be viewed on the mobile phone. The firmware of the Pedelec can also be updated using the APP.
When the APP is opened and connected to the display, the Bluetooth indicator [bluetooth-icon] will light up.
Visual example of display with Bluetooth connected:
[Display showing TRIP mode with 0.0 km/h, 68.2 km, and the Bluetooth indicator active.]
7.7 Settings
After turning on the display, quickly press the [i] button twice (less than 0.3S) to enter the "MENU" interface. Use the [+] or [-] buttons to select and reset options. Press the [i] button twice again (less than 0.3S) to confirm and return to the main screen. If no button is pressed for 10 seconds in the "MENU" interface, the display automatically returns to the main screen without saving data.
7.7.1 Setting
7.7.1.1 Reset Mileage
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. "tC" will appear on the display. Use the [+] or [-] button to choose between "y" (YES) or "n" (NO). Selecting "y" will reset the Daily kilometers (TRIP), Maximum speed (MAX), and Average speed (AVG).
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to save and proceed to "Selection of unit in km/Miles".
Note: Daily kilometers will reset automatically if they reach 99999km.
Visual example of "tC" setting screen:
[Display showing MENU, tC, and options y/n.]
7.7.1.2 Selection of Unit in km/Miles
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "S7" appears. Use the [+] or [-] button to choose between "km/h" or "mile/h".
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to save and proceed to "Set light sensitivity".
Visual example of "S7" setting screen:
[Display showing MENU, S7, and options km/h or mile/h.]
7.7.1.3 Set Light Sensitivity
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "bL0" appears. Use the [+] button to increase or the [-] button to reduce the light sensitivity (0-5). Setting 0 turns off light sensitivity.
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to save and proceed to "Set display brightness".
Visual example of "bL0" setting screen:
[Display showing MENU, bL0, and options 0, 1, 2, 3, 4, 5.]
7.7.1.4 Set Display Brightness
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "bL1" appears. Use the [+] button to increase or the [-] button to reduce brightness (1-5).
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to save and proceed to "Set Auto Off".
Visual example of "bL1" setting screen:
[Display showing MENU, bL1, and options 1, 2, 5.]
7.7.1.5 Set Auto Off
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "OFF" appears. Use the [+] button to increase or the [-] button to reduce the auto-off time (1-9 minutes).
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to save and proceed to "Service Tip".
Visual example of "OFF" setting screen:
[Display showing MENU, OFF, and options 1, 2, 9.]
7.7.1.6 Service Tip
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "nnA" appears. Use the [+] or [-] button to choose between "0" (turn off notification) or "1" (enable notification).
After selection, press the [i] button twice (less than 0.3S) to save and return to the main screen.
Note: If the "Service" function is enabled, the "SERVICE" indicator [wrench-icon] will be displayed every time the system is switched on, if the mileage exceeds 5000 km.
Visual example of "nnA" setting screen:
[Display showing MENU, nnA, and options 0 or 1.]
Visual example of SERVICE indicator:
[Display showing speed (e.g., 10.5 km/h), total (e.g., 500), and the SERVICE indicator [wrench-icon].]
7.7.2 View Information
Data in this section can only be viewed, not changed.
7.7.2.1 Wheel Size
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "LUd" appears. This displays the wheel size.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Speed Limit".
Visual example of "LUd" screen:
[Display showing MENU, LUd, and wheel size (e.g., 29).]
7.7.2.2 Speed Limit
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "SPL" appears. This displays the current speed limit.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Controller hardware info".
Visual example of "SPL" screen:
[Display showing MENU, SPL, speed (e.g., 25 km/h).]
7.7.2.3 Controller Hardware Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "CHc (Controller Hardware check)" appears. This displays controller hardware information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Controller software info".
Visual example of "CHc" screen:
[Display showing MENU, CHc, and version number (e.g., 88).]
7.7.2.4 Controller Software Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "CSc (Controller Software check)" appears. This displays controller software information.
Visual example of "CSc" screen:
[Display showing MENU, CSc, and version number (e.g., 8888).]
7.7.2.5 Display Hardware Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "dHc (Display Hardware check)" appears. This displays display hardware information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Display software info".
Visual example of "dHc" screen:
[Display showing MENU, dHc, and version number (e.g., 8.8).]
7.7.2.6 Display Software Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "dSc (Display Software check)" appears. This displays display software information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "BMS hardware info".
Visual example of "dSc" screen:
[Display showing MENU, dSc, and version number (e.g., 88.8).]
7.7.2.7 BMS Hardware Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "bHc (BMS Hardware check)" appears. This displays BMS hardware information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "BMS software info".
Visual example of "bHc" screen:
[Display showing MENU, bHc, and version number (e.g., 8.8).]
7.7.2.8 BMS Software Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "dSc (Display Software check)" appears. This displays BMS software information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Sensor hardware info".
Visual example of "dSc" screen:
[Display showing MENU, dSc, and version number (e.g., 88.8).]
7.7.2.9 Sensor Hardware Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "SHc (Sensor Hardware check)" appears. This displays sensor hardware information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Sensor software info".
Note: This information is not displayed if there is no torque sensor in the drive system.
Visual example of "SHc" screen:
[Display showing MENU, SHc, and version number (e.g., 8.8).]
7.7.2.10 Sensor Software Info
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "SSc (Sensor Software check)" appears. This displays sensor software information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Battery info".
Note: This information is not displayed if there is no torque sensor in the drive system.
Visual example of "SSc" screen:
[Display showing MENU, SSc, and version number (e.g., 88.8).]
7.7.2.11 Battery Information
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "b01" appears. You can briefly press the [i] button (0.3s) to view all battery information.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen, or press the [i] button once to proceed to "Message of Error Code".
Battery Information Details:
| Content | Explanation |
|---|---|
| b01 | Current temperature (°C) |
| b04 | Voltage (V) |
| b06 | Discharge (A) |
| b07 | Remaining Capacity (A/h) |
| b08 | Total Capacity (A/h) |
| b09 | Relative SOC (%) |
| b10 | Absolute SOC (%) |
| b11 | Charging cycles (number) |
| b12 | Maximum not charging time (Hr) |
| b13 | Recently not charging time (Hr) |
| d00 | Number of battery cell |
| d01 | Voltage of cell 1 (mV) |
| d02 | Voltage of cell 2 (mV) |
| dn | Voltage of cell n (mV) |
Note: If no data is detected, "--" is displayed.
Visual example of "b01" screen:
[Display showing MENU, b01, temperature (e.g., 23.4°C).]
7.7.2.12 Message of Error Code
When the system is on, quickly press the [i] button twice (less than 0.3S) to access the "MENU" interface. Repeatedly press the [i] button until "E00" appears. You can briefly press the [i] button (0.3s) to view the last ten Error Codes ("E00" to "E09"). Error code "00" indicates no error.
After viewing, press the [i] button twice (less than 0.3S) to save and return to the main screen.
Visual example of "E00" screen:
[Display showing MENU, E00, and error count (e.g., 30).]
7.8 Error Code Definition
The display can show errors for a pedelec. If an error is detected, a [wrench-icon] appears on the display along with an error code.
Note: Please read the error code description carefully. When an error code appears, first restart the system. If the problem persists, contact your dealer or technical personnel.
| Error Code | Declaration | Troubleshooting |
|---|---|---|
| 04 | The throttle has fault. | 1. Check throttle connector for correct connection. 2. Disconnect throttle. If problem persists, contact retailer. (Function specific) |
| 05 | The throttle is not back in its correct position. | Check if throttle adjusts to correct position. If not improved, change throttle. (Function specific) |
| 07 | Overvoltage protection | 1. Remove battery. 2. Re-insert battery. 3. If problem persists, contact retailer. |
| 08 | Error with the hall sensor signal inside the motor | Please contact your retailer. |
| 09 | Error with the Engine phase's | Please contact your retailer. |
| 10 | The temperature inside the engine has reached its maximum protection value | 1. Turn off system and allow Pedelec to cool down. 2. If problem persists, contact retailer. |
| 11 | The temperature sensor inside the motor has an error | Please contact your retailer. |
| 12 | Error with the current sensor in the controller | Please contact your retailer. |
| 13 | Error with the temperature sensor inside of the battery | Please contact your retailer. |
| 14 | The protection temperature inside the controller has reached its maximum protection value | 1. Turn off system and let pedelec cool down. 2. If problem persists, contact retailer. |
| 15 | Error with the temperature sensor inside the controller | Please contact your retailer. |
| 21 | Speed sensor Error | 1. Restart system. 2. Check magnet alignment with speed sensor (distance 10-20 mm). 3. Check speed sensor connector. 4. If error persists, contact retailer. |
| 25 | Torque signal Error | 1. Check all connections. 2. If error persists, contact retailer. |
| 26 | Speed signal of the torque sensor has an error | 1. Check speed sensor connector. 2. Check speed sensor for damage. 3. If problem persists, contact retailer. |
| 27 | Overcurrent from controller | Please contact your retailer. |
| 30 | Communication problem | 1. Check all connections. 2. If error persists, contact retailer. |
| 33 | Brake signal has an error (If brake sensors are fitted) | 1. Check all connectors. 2. If error continues, contact retailer. |
| 35 | Detection circuit for 15V has an error | Please contact your retailer. |
| 36 | Detection circuit on the keypad has an error | Please contact your retailer. |
| 37 | WDT circuit is faulty | Please contact your retailer. |
| 41 | Total voltage from the battery is too high | Please contact your retailer. |
| 42 | Total voltage from the battery is too low | Please contact your retailer. |
| 43 | Total power from the battery cells is too high | Please contact your retailer. |
| 44 | Voltage of the single cell is too high | Please contact your retailer. |
| 45 | Temperature from the battery is too high | Please contact your retailer. |
| 46 | The temperature of the battery is too low | Please contact your retailer. |
| 47 | SOC of the battery is too high | Please contact your retailer. |
| 48 | SOC of the battery is too low | Please contact your retailer. |
| 61 | Switching detection defect | Please contact your retailer. (Function specific) |
| 62 | Electronic derailleur cannot release. | Please contact your retailer. (Function specific) |
| 71 | Electronic lock is jammed | Please contact your retailer. (Function specific) |
| 81 | Bluetooth module has an error | Please contact your retailer. (Function specific) |
