As a high-performance inverter, Yaskawa inverter is widely used in various industrial automation fields. However, during use, sometimes undervoltage faults occur, resulting in the equipment not functioning properly. This article will analyze in detail the causes and solutions of the undervoltage fault reported by the operation of Yaskawa inverter.
1. The cause of the undervoltage failure of Yaskawa inverter.
1.The power supply voltage is too low: When the power supply voltage is lower than the rated voltage of the inverter, the inverter will report an undervoltage fault.
2.Power supply is out of phase: When the power supply is out of phase, it will cause the voltage to drop, which in turn will cause an undervoltage fault.
3.Motor overload: When the motor is overloaded, the current rises, causing the supply voltage to decrease, which leads to undervoltage faults.
4.Inverter internal circuit failure: Inverter internal circuit failure can also lead to the occurrence of undervoltage faults.
Second, the solution to the undervoltage fault of Yaskawa inverter.
1.Check the power supply voltage: Make sure the power supply voltage is within the rated voltage range of the inverter, and if necessary, install a regulated power supply.
2.Check the phase sequence of the power supply: ensure that the phase sequence of the power supply is correct, and repair it in time if there is a phase loss.
3.Reduce the motor load: By reducing the motor load, the current is reduced, so as to avoid the occurrence of undervoltage faults.
4.Check the internal circuitry of the inverter: If possible, check the internal circuitry of the inverter to see if there is a fault.
3. Case analysis.
The Yaskawa inverter of a factory suddenly reported an undervoltage fault during operation, and the technician first checked the power supply voltage and phase sequence, which were normal. Then check the motor load, and find that the motor load is too large and the current is too high. The technicians decided to reduce the load on the motor and tested it. The test results show that the inverter is operating normally, and the undervoltage is troubleshooting.
IV. Conclusions. There are many reasons for the undervoltage fault reported by Yaskawa inverter operation, such as low power supply voltage, power supply phase loss, excessive motor load, and internal circuit failure of the inverter. When encountering an undervoltage fault, it should be analyzed and troubled according to the actual situation, and corresponding measures should be taken to solve the fault. At the same time, strengthening the daily maintenance and maintenance of equipment is also an important measure to prevent undervoltage failure. Through the analysis and example introduction of this article, it is hoped that it can provide useful reference and reference for relevant technical personnel.