Servo motor failure causes and prevention tips

1. SERVO MOTOR FAILURE CAUSES AND PREVENTION TIPS

2. Servo motors, often known as AC synchronous motors, are versatile solutions for machine makers. They combine remarkable energy economy and compact size to provide up to 60% greater torque than equivalent-sized induction motors. Like any other piece of machinery, servos have flaws that can have an impact on both production and safety. It is essential to comprehend the typical causes of servo motor failure because of this. You can minimize downtime and ensure that these motors perform at their best for the duration of their lives by keeping an eye on these primarily preventable concerns. To learn more Servo motor repair get in touch with us.

3. 1. A FAULTY BEARING Servo motor bearing failure can occur often for a variety of reasons. Naturally, bearings wear over time and with use. These bearings may become misaligned as a result of improper motor installation or reinstallation. Unusual noises, such as growling or screaming while the engine is operating at high speeds, are a clear symptom of bearing failure.The best method for avoiding bearing failure is predictive maintenance. The lifespan of the motor can be considerably extended by routinely inspecting it and replacing any worn bearings. Additionally, this will allow you to schedule repairs at times when they won't interfere with your workflow.

4. 2. INADEQUATE BRAKES When the drive is stopped or turned off, a weight is kept in place using servo motor brakes. The bulk of servo motor brakes are only designed for holding, not for dynamic stopping. The brake may become so worn that it needs to be changed if it is used for multiple e-stops or frequent stops.The brake is often enclosed in the housing of a servo motor because many of them are built with IP65 protection, making it difficult to check or repair. The engine brake should always be engaged when stationary. The drive current to the motor can be turned off once the brake has been applied.

5. 3. FAILURES OF THE CABLE AND WINDING The most frequent reason for servo motor failure is bad winding. Due to water contamination or more gradually over time as a result of normal vibration as the motor operates, these copper coils inside the motor may deteriorate. Like the motor, which is prone to failure or voltage spikes that force it to shut down, the system's power, control, or feedback connections may deteriorate over time.If the servo motor has been exposed to coolant or water, among other impurities, it is imperative to check for winding breakdown. (We go into more detail about this subject below.) Even immaculate windings need to be examined since over time they start to degrade. Rewinding the damaged coils will extend the motor's life and keep it in good working order.

6. 4. POLLUTANTS Pollution is the root cause of many of the motor problems we've discussed thus far. Despite their general durability, some substances, such as coolant, oil, and even everyday detritus like dirt, can severely harm servos. By obstructing fans and other crucial system components, the latter might lead to overheating. Liquid impurities may affect the motor's windings, encoder, and bearings among other components.The prevention of servo contamination requires routine inspections and cleanings. Particularly for systems operating in harsh climates, completely sealed motor systems and sealing the motor windings can assist prevent these harmful elements from entering and harming the system.

7. 5. TOO MUCH HEAT For the majority of machines, including servo motors, overheating is a serious issue. Overheating could result in an expensive downtime by harming parts of the motor and other systems. Motor blockages, hot surroundings, and prolonged operation hours usually result in heat damage in servos. An overheated servo will eventually fail, even if there are no immediate visible indicators of damage because heat damage is typically covert. Fortunately, the majority of servo motors have a failsafe that turns the device off when the temperature rises above a safe threshold. Contact for more details about ASCO Solenoid Valves.

8. OVERHEATING SERVO MOTOR A heated motor is a major issue that could eventually lead to the catastrophic failure of the motor or other machine parts. A problem with the equipment's overcurrent could be the cause of overheating. Investigating mechanical binding, brake problems, or overload problems is the best place to start. It is critical to inspect and spin the motor's output shaft to check for bearing failure once technical issues have been ruled out. Next, look for any problems like contamination or internal shorts in the windings.

9. SERVO MOTOR MAKING NOISE The motor will cease moving and make a chattering or buzzing noise, and the issue may be intermittent or ongoing. The motor's output shaft will frequently be stationary, but it might sporadically vibrate somewhat. A miscalculation in positioning frequently results in this chattering. The non-failure related reason of this could be a problem with the drive module configuration or a loss of settings. The setup method for the engine and drive you are using should be followed first, especially if the drive has an auto-tune feature. To learn more plc repair get in touch with us.