Measuring whether a 24v DC motor is good or not can be done in a few simple steps. Here's a basic guided process that you can use a multimeter (multimeter) to test:
Multimeter (set in resistance or beep mode, if there is a beep mode, it is easier to check the continuity of the motor coil).
24V DC power supply (optional, for functional testing).
First, inspect the appearance of the motor for visible damage, such as cracks, scorch marks, or foreign body blockages.
Set the multimeter to resistance or beep (connected mode).
Touch the two probes of the multimeter to the two electrodes of the motor.
If the multimeter shows a resistance value (usually not 0 ohms, nor infinity), or if there is a continuous beep under the beep stop, the motor coil is not open and is connected.
Or use the resistance position of the multimeter, touch one probe to one electrode of the motor, and the other probe to the metal housing of the motor.
This test is performed on both electrodes of the motor.
If a very low resistance value is displayed (close to 0 ohms), it may indicate that the motor coil has been shorted to the housing.
If the motor does not show abnormality in the above tests, you can perform a functional test by plugging in a 24V DC power supply.
Connect the motor to a 24V power supply and observe whether the motor can rotate normally.
Note: Take care when performing this test to ensure that the polarity of the power supply is correct and that the motor is not overloaded for a long time.
Disconnect the power supply and manually turn the motor shaft to feel whether it is smooth.
If there is a stuttering sensation or abnormal noise during rotation, it may be that the bearing is damaged or there is a foreign object inside.
Before performing any testing, make sure the motor has been completely disconnected from any power source or system.
When using a 24V DC power supply for functional testing, pay attention to safety and avoid short circuits or electric shocks.
If the motor shows problems in the above tests, it may need to be professionally repaired or replaced. If you're unsure about the test results, it's a good idea to seek help from a professional.