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 causes a DC inverter to overvoltage?

This can arise from high inertia loads decelerating too quickly, the motor turns into a generator and increases the inverter’s DC voltage. There are other causes of DC overvoltage, however. POSSIBLE FIXES: Turn the overvoltage controller is on. Check supply voltage for constant or transient high voltage. Increase deceleration time.

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 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?

What causes overvoltage & undervoltage?

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. There are other causes of DC overvoltage, however. POSSIBLE FIXES: Turn the overvoltage controller is on.

What if my inverter is over-current?

Motor over-current. The inverter’s output current is 1.2 times greater than the rated motor current and continues for over 2 minutes. Please check if the parameter setting for the motor’s rated current is correct. Also, check if the motor or load machinery is blocked and if the power supply voltage is too low.