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Reasons for motor stalling-How to deal with motor stalling?

Date:2023-10-30   Author:XINDA MOTOR
Reasons for motor stalling

Motor stalling is a situation where the motor still outputs torque when the speed is 0 rpm. It is usually mechanical or man-made. The motor cannot start or stop rotating due to reasons such as excessive motor load, mechanical failure of the drag, damaged bearings, etc. When the motor is blocked, the power factor is extremely low, and the current when the motor is blocked (called locked-rotor current) can be up to 7 times the rated current. If the motor is blocked for a longer period of time, the motor will be burned out. Therefore, the general test of the motor includes the stall test.

There may be many reasons for motor stalling. Here are some common reasons:

Internal faults in the motor, such as bearing damage, rotor stuck, stator winding short circuit, etc.;

Power failure, such as abnormal power voltage, power short circuit, etc.;

The mechanical load of the motor is too large or the load is abnormal, such as too tight bearings, excessive load, transmission component failure, etc.;

Control system failure, such as control signal error, controller damage, etc.;

Other reasons, such as poor circuit contact, improper maintenance, etc.

When the motor is blocked, the fault needs to be eliminated in time to avoid damage to the motor. The cause can be investigated one by one by inspecting the inside of the motor, power supply, mechanical load and control system, and the fault point can be found and repaired.

How to deal with motor stalling

Motor stalling is a common fault, and the solution is as follows:

Cut off the power supply: After discovering that the motor is blocked, the power supply should be cut off immediately to prevent the motor from continuing to run and damage the motor and equipment.

Troubleshoot the cause of the fault: Check whether all parts of the motor are normal, such as whether bearings, mechanical parts, and wire connections are loose or damaged, and find the cause of the fault.

Repair or replace parts: According to the actual situation, repair or replace the faulty parts to ensure the normal operation of all parts of the motor.

Restart the motor: After confirming that all parts of the motor are operating normally, reconnect the power supply and start the motor for trial operation to ensure normal operation of the motor.

It should be noted that before the motor is blocked, regular maintenance should be carried out, the inside and outside of the motor should be cleaned in time, and the use of each component should be checked to prevent malfunctions. At the same time, you should also avoid overloading the motor during use and pay attention to protecting the motor.