Robot Abnormal Condition Description; Common Problems And Solutions - Unitree B1 User Manual

Robot Abnormal Condition Description

Unitree Robotics adopts a simplified mechanical structure to reduce the difficulty of manufacturing and improve the
reliability of the machine. The robots have achieved the leading level at home and abroad in terms of structure, dynamic
performance, motion performance and cost. The quadruped robot developed and produced by us is reliable in quality and
cost-effective. It is very suitable as a new quadruped mobile platform for the exploration of scientific research and
industrial applications. But the robots will have some abnormal conditions when the external environment does not meet
the requirements of robot operation or the users do not use it properly.
 caused by improper operation by the users is not covered by the warranty. Please use it in strict accordance with the
operating instructions.

Common Problems and Solutions

When using the B1 quadruped robot, the robot may be abnormal. Most abnormal situations are controllable (there
are solutions). The users should not panic when encountering these problems. Read the following contents in detail and
solve the problems step by step.
If you have any questions, please contact Unitree Robotics official technical support: support@unitree.cc.
 Self-testing fails after startup
When the robot lies on the ground and starts the machine, if the robot dog does not stand up after 2 minutes, and the
robot dog does not stand up after pressing the remote control L1+START, it means that the self-test has failed, and the
robot dog cannot stand up. In this case, it is necessary to re-check the robot body and try again according to the steps of
the two chapters "Check before Power
 Self-protection after falling down
In the use of Unitree Robotics official movement control program (control the robot move by using the remote
control), the robot will switch to self-protection status as a result of falling down caused by the external environment
reasons (lack of friction, etc.) on the surface or improper operation, the motor of the robot will automatically switch to
the braking state to protect the various parts.
 How to turn off the robot when the remote control module fails
When encountering the failure of the remote control module (such as the handle battery exhaustion, etc.), the remote
control buttons cannot be used to make the robot lie on the ground and standby. The only way to forced shutdown is to
press the battery supply button.
Forced shutdown: Keep the robot at least 2 meters away from obstacles, complex ground, crowd, water, and other
objects. Hold the head and tail of the robot, short press the power switch once, and then lonely press the power switch
for more than 4 seconds to turn off. Move it to the ground slowly after powering off.
 The robot is easy to fall down and cannot stand when powered on
The correct starting posture is not used, which resulting in the wrong angle of the motor. Restart the robot after using
the correct starting posture.
 How to stand by for a long time
If you need to stand by for a long time, please control the robot to the lying position and press (press L2 + B keys to
enter the damping mode) to avoid the robot from falling down and falling when the power is low!
 Notice! When moving the robot, do not place your hands on joints, such as the hip joints, be careful to pinch your hands!
If the robot is standing and forced to shut down without protection measures, it will shoot flat on the ground after power off.
on" and "Preparation before Power on".
© 2022 All rights reserved, Unitree Robotics
B1 User Manual
32