LCD-S866 E-bike Display
Model: LCD-S866, Version: 2018 V1.0
Appearance, Size, and Material
The outer shell is made of ABS. The transparent window of the liquid crystal display is made of imported high-hardness acrylic, with a hardness value equivalent to tempered glass.
Main unit dimensions: approximately 80.50mm width, 53.00mm height, and 34.00mm depth. Handlebar mounting diameter: approximately 22.2mm. Connector dimensions: approximately 47.50mm diameter for the circular connector.
Working Voltage and Wiring Method
Working Voltage: Compatible with DC24V, 36V, 48V, 60V. Other voltages can be customized.
Wiring:
| Cable Serial Number | Cable Color | Function |
|---|---|---|
| 1 | Red(VCC) | Instrument power cord |
| 2 | Blue(K) | Controller power's control line |
| 3 | Black(GND) | Instrument ground |
| 4 | Green(RX) | Instrument's data receiving line |
| 5 | Yellow(TX) | Instrument's data transmission line |
Features
1. Display Function:
- Speed display
- Battery indicator
- Fault prompt
- Total mileage
- Single mileage
2. Control and Setting Function:
- Power switch control
- Wheel diameter setting
- Idle automatic sleep time setting
- Backlight brightness setting
- Start mode setting
- Drive mode setting
- Voltage level setting
- Controller current limit value setting
3. Communication Protocol: UART
The display shows full content during boot.
Display Content
3.1 Battery Level Display: Visual indicator for battery status.
3.2 Multi-function Display Area: Shows Total Mileage (ODO), Single Mileage (DST), Battery Voltage (VOL), Single Power-on Time (TM), Current Operating Current (CUR), Instantaneous Power (WATT), and Fault Codes (refer to Table 1).
3.3 Speed Display Area: Displays Average Speed (AVG), Maximum Speed (MAX), and Current Speed (CUR) in units of MPH or KM/H.
Speed is measured via the Hall signal in the motor, transmitted through the controller. The meter calculates speed based on wheel diameter and signal data. The motor's Hall sensor also requires the correct number of magnets to be set for accurate speed readings.
3.4 Vehicle Power Steering Gear Adjustment: 0-9 digital display.
3.5 Vehicle Status Display Area: Icons indicate:
- [Communication Failure]
- [6km/h Booster]
- [Speed Cruise Tips]
- [Brake Reminder]
- [Headlight Opening Prompt]
Fault Codes and Meaning (Table 1)
| Fault Code (decimal) | Fault Status | Remarks |
|---|---|---|
| 0 | Normal Status | |
| 1 | Reserved | |
| 2 | Brake | |
| 3 | Power Sensor Failure (ride sign) | Not implemented here |
| 4 | 6KM/H Cruise | |
| 5 | Real-time Cruise | |
| 6 | Battery Undervoltage | |
| 7 | Motor Failure | |
| 8 | Turn Fault | |
| 9 | Controller Failure | |
| 10 | Communication Reception Failure | |
| 11 | Communication Failure | |
| 12 | BMS Communication Failure | |
| 13 | Headlight Failure |
Settings
4. Settings:
P01: Backlight Brightness: Level 1 (darkest) to Level 3 (brightest).
P02: Mileage Unit: 0 for KM, 1 for MILE.
P03: Voltage Level: Options include 24V, 36V, 48V, 60V, 64V. Default is 36V.
P04: Sleep Time: 0 for no sleep. Other values (1-60) set sleep time in minutes.
P05: Power Assist Position: 0 for 3-file mode, 1 for 5-file mode.
P06: Wheel Diameter: Unit is inches, accuracy 0.1. This setting is crucial for accurate speed display.
P07: Number of Speed Magnets: Range: 1-100. This setting is also crucial for accurate speed display.
For normal hub motors, input the number of magnetic steel directly. For high-speed motors, calculate using the reduction ratio: Input data = Number of magnets × Reduction ratio. Example: 20 magnets × 4.3 reduction ratio = 86.
P08: Speed Limit: Range 0-100 km/h; 100 means unlimited speed. Inputting a value (e.g., 25) sets the maximum vehicle speed to 25 km/h. The driving speed will be maintained at this set value. Error tolerance is ±1 km/h for both assist and speed limit.
Note on P08: Settings are based on kilometers. When switching to miles, the display speed converts, but the speed limit value entered in this menu does not auto-convert, potentially causing inconsistency.
Note on P09-P15: These settings are only valid when communication is active.
P09: Zero Start/Non-Zero Start: 0 for zero start, 1 for non-zero start.
P10: Drive Mode Setting: 0 for Power drive (assist position determines output, switch is invalid). 1 for Electric drive (rotary handle driven, assist position invalid). 2 for simultaneous Power assist and Electric drive.
P11: Boost Sensitivity Setting: Range: 1-24.
P12: Boost Start Strength Setting: Range: 0-5.
P13: Power Magnetic Steel Disc Type: Options: 5, 8, 12 magnetic steel.
P14: Controller Current Limit Value Setting: Default 12A, Range: 1-20A.
P15: Controller Undervoltage Value: (No specific value range provided in text).
P16: ODO Clear Setting: Long press the [Up] button for 5 seconds to clear ODO.
P17: Cruise Control: 0: Cruise not enabled. 1: Cruise enabled. Auto cruise is optional (valid for protocol 2).
P18: Display Speed Ratio Adjustment: Range: 50%~150%.
P19: 0 Gear Enable Bit: 0: Enable 0 gear. 1: Disable 0 gear.
P20: Protocol Selection: 0: Protocol No. 2. 1: 5S Protocol. 2: Alternate. 3: Alternate.
Introduction to Buttons and Display Interface
The display can show three different interfaces (Interface 1, Interface 2, Interface 3) showing various data combinations.
Button Operations:
1. Powering On/Off and Interface Switching:
- To Boot: In the off state, long press the [Power/Mode] button. After booting, Interface 1 is displayed.
- To Switch Interface: Short press the [Power/Mode] button to cycle through Interface 1, Interface 2, and Interface 3. Short press again to return to Interface 1.
- To Shut Down: In the power-on state, long press the [Power/Mode] button.
2. Adjusting Power Assist Gear:
- To increase power assist gear: Short press the [+] button.
- To decrease power assist gear: Short press the [-] button.
3. Entering Mode Setting and Parameter Modification:
- To Enter Mode Setting: Long press the [+] button.
- To Switch Parameters: Under a certain parameter state, short press the [Power/Mode] button.
- To Increase Value: Short press the [+] button.
- To Decrease Value: Short press the [-] button.
- To Save and Switch Parameter: After modification, short press the [Power/Mode] button to switch to the next parameter and save the previous one.
- To Exit Settings: Long press the [+] button after modifying a parameter to exit the settings interface. If no action is taken for 8 seconds, the system automatically exits and saves parameters.
4. Entering Password Setting:
- In a certain parameter state, long press and hold the [+] and [Power/Mode] buttons simultaneously to enter the password setting interface.
- To switch password digits: Short press the [Power/Mode] button.
- To modify current value: Short press the [+] and [-] buttons.
- After password modification, long press and hold the [+] and [Power/Mode] buttons simultaneously to exit the password setting interface to the menu interface, saving the last set password. (Note: This password will be required for the next boot).
- To exit settings to the normal interface: Long press the [+] button again. If no action is taken for 8 seconds, the system automatically exits to the normal interface and saves parameters.
5. Alternate Password Operation ("3745"):
If the password is forgotten upon startup, enter the alternate password "3745". Press and hold the [Power/Mode] button for 10 seconds to enter the normal interface.
