Therefore, in the operation of the stepper motor, it is necessary to pay attention to whether the operation of the transmission device is flexible and reliable; whether the concentricity of the coupling is standard; the flexibility of the gear transmission, etc. Run it after troubleshooting. Always check whether the three-phase current of the motor balances the three-phase asynchronous motor.
If it exceeds, it indicates that the motor is faulty, and it is necessary to find out the cause and eliminate it in time. Check the temperature of the motor. Always check the temperature of the bearing, stator, casing and other parts of the motor for abnormal changes.
Especially for motors without voltage, current and frequency monitoring and without overload protection, monitoring the temperature rise is more important.
If the motor bearing is overheated and lacks oil, if it is found that the temperature rise near the bearing is too high, it should be stopped immediately. Whether the bearing rolling element and the raceway surface are cracked, scratched or damaged, whether the bearing clearance is excessively shaken, and whether the inner ring rotates on the shaft or the like.
In the case of any of the above phenomena, the bearings must be renewed before they can be reworked. Observe whether the motor has vibration, noise and abnormal odor.
If the motor vibrates, it will cause the load part connected to it to increase in different degrees of heart, and the motor load will increase. If the motor is overloaded, the motor will be burnt. Keep work areas, tools and fixtures as clean as possible to help eliminate the chance of contamination entering the motor. Also, when laying out the workspace, try to position motors away from grinding machines which produce large amounts of contaminants.
Vibration can lead to many issues with the motor, and can eventually cause the motor to fail prematurely. Vibration is often caused by the motor being positioned on an uneven or unstable surface. However, vibration can also be a result of an underlying issue with the motor, such as loose bearings, misalignment, or corrosion. In order to reduce vibration, ensure that the motor is positioned on a flat, stable surface. If vibration still occurs, check for signs of wear, as well as loose bearings or misalignment.
Consider contacting a specialist if the source of vibration cannot be identified. Free delivery available Worldwide distribution Same day despatch Easy returns. Electrical Overload Electrical overload or over-current is caused by an excessive current flow within the motor windings, exceeding the design current which the motor is able to carry efficiently and safely.
For instance, a three percent voltage imbalance can cause an 18 percent temperature rise in the motor. For proper motor operation, phase voltage imbalance should be less than one percent. Single phasing , a voltage unbalance that causes a three-phase motor to only run on two phases, can also result in motor failure.
Often hard to detect, single phasing can cause a motor to burn out. According to Purcell, A VFD will protect the life of a motor and help simplify speed control, starting, and stopping. Consider avoiding these errors when it comes to installing and maintaining your electric motor:. Our Industrial Maintenance Technology IMT group provides a comprehensive list of maintenance and repair services including vibration analysis, lubrication, and laser alignment.
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