A1 PRO User Manual
Copyright © 2020 Unitree Robotics. All Rights Reserved
17
The LED can display information about battery protection triggered by abnormal charging.
Charging Indicator
LED1 LED2 LED3 LED4
Display Rule
Protection Project
LED2: 2 times/sec
Excessive charging current
LED2: 3 times/sec
Short circuit
LED3: 2 times/sec
Overcharge causes battery voltage be too high
LED3: 3 times/sec
Charger voltage is too high
LED4: 2 times/sec
Charging temperature is too low
排除
LED4: 3 times/sec
Charging temperature is too high
Troubleshoot (charge current is too large, charge short circuit, charge overcharge causes battery voltage
is too high, charging voltage is too high), please re-plug the charger to resume charging. If the charging
temperature is abnormal, please unplug the charger first. After the charging temperature returns to
normal, plug in the charger and recharge.
Foot Assembly
Introduction
The foot assembly adopts a new design. The movement of the robot will compress the air in the foot
pad and send the pressure signal through the air pipe to the pressure sensor in the shoulder, so as to
judge the environment the robot is in and adjust the movement of the robot accordingly.
Foot end components include foot end base, bottom curved rubber pad, air needle and other
components.It can increase the friction of the foot, avoid the damage of the foot, and reduce the impact
on mechanical parts.
The foot end components are consumables, and the service life is generally 2-6 months (depending on
the use frequency, duration and working condition).Especially in the rough ground running wear will be
more serious, such as obvious foot pad wear, damage, or found that the robot walking on the ground
significantly increased impact noise, please replace the foot components in time, so as not to damage
the foot, resulting in the robot movement disorder.
For safety reasons, the battery needs to be discharged during transportation. The discharge
mode is divided into active discharge and passive discharge:
1.Active discharge: Run the robot until the battery is at a low battery (eg 50% or less).
2.Passive Discharge: The battery is stored in self-discharge protection. For details, please refer
to the chapter "Battery Pack" - "Battery Pack Function".
