The cause of the failure of the inverter and its maintenance treatment

Create Date: 2024-8-30 12:03:23|Source: YASKAWA/Yaskawa

One. The type of failure and the reason for the failure

1. The type of failure

Faults are divided into power supply faults, internal faults, and load faults.

Power failure: There is a fault in the power grid connected by the inverter

Internal fault: The failure of the drive itself

Load failure: The motor fails, such as phase failure, overload, short circuit, etc.

2. The cause of the failure

There are two types of fault causes, external and internal

External causes: failures caused by external factors of the inverter, such as operation errors, parameter setting errors, external interference, etc.

Internal causes: faults caused by internal factors of the inverter, such as short circuits, component damage, poor connector contact, etc.

Two. Inverter fault diagnosis and maintenance

In the fault judgment, you can use some instruments and inverters to judge.

1. Fault diagnosis process

(1) Check the fault phenomenon of the inverter and some situations indicated, and the external environment changes when the fault occurs.

(2) Analyze the cause of failure.

(3) Open the equipment to view the damaged place and analyze the feasibility of repair and restoration.

(4) Analyze the working principle of the circuit from the working position of the damaged device and find out the cause of the damaged device.

(5) Find relevant devices to replace.

(6) In the case that all the causes of the fault and the cause are eliminated, the experiment is carried out with power, and when this step is carried out, all external conditions must be in place, and the fault will not be expanded.
The cause of the failure of the inverter and its maintenance treatment

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