This document describes the 860C TFT LCD display, a component designed for electric bikes, manufactured by APT (Tianjin) Develop Co., Ltd.

Function Description

The 860C display serves as the primary interface for controlling and monitoring an electric bike. It provides real-time information about speed, mileage, battery status, power output, and assist level. Users can customize various settings, including speed limits, assist levels, and display preferences. The device also features error code indicators for troubleshooting and a walking mode for easy maneuvering at low speeds.

Important Technical Specifications

Display: 3.5-inch IPS colorful matrix screen with high contrast.
Battery Supply: Compatible with 24V, 36V, 48V, and 52V battery systems.
Operating Current: Rated at 40mA, with a maximum operating current of 100mA (for 36V battery with USB equipment connected).
USB Charging Port: 5V 500mA output.
Leakage Current: Off leakage current is less than 1uA.
Output Current to Controller: Maximum 100mA.
Operating Temperature: -20℃ to 70℃.
Storage Temperature: -30℃ to 80℃.
Dimensions: Host measures L96.6mm * W71.6mm * H6.1mm.
Material: Product shell is ABS+PC, with an LCD transparent window made of imported super tempered glass, utilizing a full bonding process.
Connectivity: Software can be upgraded through UART.
Certification: CE / IP65 (waterproof) / ROHS.

Usage Features

Power On/Off: To turn the display on or off, press and hold the "Power" button for 1 second. The display can be configured to automatically shut down after a set period (0-9 minutes) of inactivity. If a password is set for power-on, it must be entered before the device starts.

Assist Level Operation: The assist level can be changed by short pressing the "UP" or "DOWN" buttons. The top assist level is 9, with 0 representing neutral. The number of assist levels can be customized according to user requirements (e.g., 3, 5, or 9 levels).

Speed & Mileage Mode Switch: Pressing the "MENU" button allows users to cycle through different speed and mileage modes, including TRIP, ODO (Odometer), RANGE, TIME, MAX SPEED, and AVG SPEED.

Headlight/Backlight On/Off: Press and hold the "UP" button for 1 second to turn the headlight and backlight on or off. The screen will switch to the corresponding mode (daytime or night mode). The display can maintain the headlight function for a period even if the motor is not working due to low battery voltage.

Walking Mode (6km/h): To activate walking mode, press and hold the "DOWN" button for 2 seconds. Releasing the button exits this mode. This feature requires controller support.

Data Cleanup: Simultaneously pressing and holding the "UP" and "DOWN" buttons for 1 second will reset temporary data, including AVG Speed, MAX Speed, Trip distance, and Riding Time. These temporary data cannot be erased by powering off the device.

Parameter Setting: Double-pressing the "MENU" button (with an interval less than 0.3 seconds) enters the setting menus. "UP/DOWN" buttons change parameter settings, and the "MENU" button switches to the next item. Double-pressing "MENU" again exits the menu. The display automatically exits the menu after 30 seconds of inactivity or when riding starts. Parameters include:

Language: Default is EN (English), unadjustable.
System: Switch between Metric and Imperial units using "UP/DOWN".
Brightness: Adjust backlight brightness using "UP/DOWN". Brightness can be set independently for daytime and night modes.
Auto off: Set auto power-off time from 1 to 9 minutes, or OFF to disable. Default is 5 minutes.
Scenes: Analog display only.
Battery Ind: Change battery indicator to Voltage, Percentage, or OFF.
Pow Ind: Change power indicator to Power or Current.
Clock: Set Year, Month, Day, Hour, Minute, and Second using "UP/DOWN" buttons after entering the clock setting menu with "MENU". A rechargeable battery inside the display keeps the clock running even when powered off and can be charged by keeping the display powered on for 72 hours (with auto-off disabled).
Start password: Set a password for power-on. If enabled, the correct password must be entered within 30 seconds, or the display will power off.

Basic Setting Menu: Accessed by pressing the "DOWN" button to move the red arrow to "Basic Setting" and then pressing "POWER".

Wheel: Set wheel diameter (16/18/20/22/24/26/27/27.5/28/29/30/31 inch) or circumference (51cm-255cm). Requires controller support.
Battery: Change battery voltage setting (24V/36V/48V/52V).
USB Port: Toggle USB port output ON/OFF.
Light sensor: Enter Light sensor interface with "MENU". Toggle ON/OFF and select sensitivity (HI/MID/LO) using "UP/DOWN".

Advance Setting Menu: Accessed by pressing the "POWER" button within the "Basic Setting" menu. Default password is '1919'.

Speed limit: Change speed limit from 10km/h to 60km/h or 99km/h (unlimited speed). Default is 25km/h. Speed and current limits are restricted by the controller and motor.
Assist levels: Customize assist levels (3/5/9/UBE, where UBE represents factory default settings).
Error code: Displays the last 10 error codes.

Factory Setting: Pressing the "MENU" button in the "Factory setting" item and selecting "YES" will restore all parameters to factory defaults.

Information: Displays E-bike information, including Speed (AVG, Max), Mileage (Trip, ODO, Range), Product Information (Hardware ver., Software ver., Date, Serial No), and Battery Information (Voltage, Current, Avg Current, Cycle times, Capacity, Remaining Capacity, Full Charge Capacity, Temperature, Max/Min Tempt, Relate/Absolute ChgSta, Max/Last Uncharge Times, CorVolt-1). Battery information requires battery communication support.

Maintenance Features

Error Code Definition: The 860C display shows warning messages with a "!" icon and error codes at the bottom of the screen. Error codes from 04 to 30 are defined in the manual, indicating issues such as throttle errors, voltage protection, motor sensor errors, temperature issues, and communication errors. This feature aids in diagnosing problems.

Assembly Instructions: Users are advised to pay attention to the screw's torque value during assembly, as damage caused by excessive torque is not covered under warranty. The clamps are suitable for 3 handlebar sizes (31.8mm, 25.4mm, 22.2mm), with transfer rings provided for 25.4mm and 22.2mm, which must be assembled in specific directions.

APT 860C - Power Indicator Setting

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