Frequency Converters: Overview and Importance
A frequency converter, or inverter, is a device that allows for effective control of electric motors. It provides a smooth start, stops the motor, and regulates the speed of the rotor. By using frequency converters, it is possible to significantly extend the lifespan of electric motors, reduce the number of emergency stops, and save a considerable amount of electricity. The ease of installation and operation makes frequency converters universal in production.
Common Problems with Frequency Converters
Despite their reliability and ease of use, frequency converters can fail due to various reasons and external factors. Let’s consider the most common problems and their causes:
- The frequency converter does not respond to control commands. This issue often arises from incorrect settings of the inverter, which is usually resolved by checking and reprogramming the parameters.
- The motor rotor does not rotate. This is one of the main situations related to frequency converters. A possible cause is excessive or insufficient voltage at the inverter’s output or input. Regular monitoring of the device’s operation can help prevent such situations.
- The speed of the motor rotor is not adjustable. The cause may be an incorrectly defined frequency. Prevention is similar to the previous point.
- Overheating of the electric motor. This can occur due to operation in a small, poorly ventilated room, when the cooling system cannot effectively dissipate heat.
Prevention and Maintenance
In addition to monitoring load parameters, it is also important to perform basic preventive maintenance to prevent contamination of system components. Heavy contamination of components is one of the most common reasons for equipment failure. Regularly check the operation of the cooling fan, as its stoppage can lead to serious breakdowns in the system.
Should You Repair It Yourself?
If you plan to carry out repairs yourself, consider that unqualified repairs may permanently damage expensive equipment, and afterwards, no specialist will be able to help you. Therefore, if you are not an expert in this area, it is better to consult professionals. This will save not only time but also money on purchasing a new frequency converter.