What are the common faults of brushless motors during operation?

The common faults of brushless motors include the following:

1. The motor does not rotate
The motor may not rotate due to the following reasons:
Open circuit or poor contact of power supply;
The fuse is blown;
Motor winding disconnection or grounding;
Damaged commutator or Hall element;
Control circuit malfunction.

2. Motor speed too low or unstable
The low or unstable motor speed may be caused by the following reasons:
The power supply voltage is too low;
Excessive mechanical load;
Motor winding inter turn short circuit or grounding;
Damaged commutator or Hall element;
Control circuit malfunction.

3. Motor overheating
Motor overheating may be caused by the following reasons:
Poor ventilation;
Overload operation;
Bearing damage;
Motor winding inter turn short circuit or grounding.

4. Motor vibration
Motor vibration may be caused by the following reasons:
Mechanical load imbalance;
Bearing damage;
The motor is not securely fixed.

Common troubleshooting methods:

1. The motor does not rotate
Check if the power supply is connected and if the fuse is blown.
Use a multimeter to check for any broken wires or grounding faults in the motor winding.
Check if the commutator or Hall element is damaged.
Check if there is a malfunction in the control circuit.

2. Motor speed too low or unstable
Check if the power supply voltage is normal.
Reduce mechanical load.
Use a multimeter to check for inter turn short circuits or ground faults in the motor winding.
Check if the commutator or Hall element is damaged.
Check if there is a malfunction in the control circuit.

3. Motor overheating
Clean the motor vent and improve the ventilation and heat dissipation conditions of the motor.
Reduce mechanical load.
Check if the bearings are damaged and replace them in a timely manner.
Use a multimeter to check for inter turn short circuits or ground faults in the motor winding.

4. Motor vibration
Check if the mechanical load is balanced.
Check if the bearings are damaged and replace them in a timely manner.
Check if the motor is securely fixed.

To prevent malfunctions, precautions:
Keep the motor clean and dry to avoid moisture.
Regularly inspect the motor and promptly identify and eliminate faults.
Do not overload the motor.
When using motors in damp or dusty environments, necessary protective measures should be taken.