What causes a frequency inverter to fail?

Modern frequency inverters are sophisticated but robust electronic devices, which nevertheless sometimes fail or require periodic maintenance. The most common causes of failure of frequency inverters that control motors include: factory defects in the components of the frequency inverter and defects in the assembly technology.

What if the frequency inverter voltage is too high?

When the system voltage is too high, the frequency inverter may not be able to stop at a numerical point in order to avoid triggering the DC bus over-voltage protection for its own protection. In such cases, it is recommended to connect the transformer taps to 105%.

What are the most common faults on inverters?

In this article we look at the 3 most common faults on inverters and how to fix them: 1. Overvoltage and Undervoltage Overvoltage This is caused by a high intermediate circuit DC voltage. This can arise from high inertia loads decelerating too quickly, the motor turns into a generator and increases the inverter’s DC voltage.

What are common error codes on inverters?

Modern inverters come equipped with digital displays that show error codes when something goes wrong. Here’s how to address common error codes: Low Voltage Error: Indicates that the battery voltage is too low. Charge the battery and reset the inverter. Overload Error: Reduce the connected load to within the inverter’s rated capacity.

What happens if a fault occurs during inverter operation?

The alarm will be automatically cleared once the fault is resolved. If a minor fault alarm occurs during inverter operation, the system will not shut down. If a minor fault alarm occurs during shutdown, the inverter can still start up normally. 3. What are the heavy faults?

Why is a frequency inverter unable to stop at a numerical point?

There are several reasons for the situation where the frequency inverter is unable to stop at a numerical point. These reasons include the limitations imposed by the acceleration and deceleration time in the acceleration and deceleration process, and the need for the output frequency to reach a specified frequency.