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How to find the inverter display panel does not display

Date: 2020-01-07 00:50
Browse number : 386
Abstract: How to find the display panel of the inverter does not display 1. Check the power supply input of the inverter. If necessary, use a multimeter to test the input voltage. It is stable and unstable, and there is no voltage input, so as to eliminate the problem of power input. 2. The multimeter measures the motor output line of the inverter to see if the inverter has motor output control under the power-on condition. At the same time, go to the scene to see if the motor is running. 3. Measure the insulation resistance of the motor to see if the motor itself is damaged, and ensure that the inverter is not stopped because of the motor itself. 4. Remove the inverter wiring cover and measure the control input power of the inverter to see if it is normal. 5. Inverter control signals include: output signal and feedback signal, if necessary during inspection, it can be short ...

How to find the inverter display panel does not display

1. Check the power supply line of the inverter. If necessary, use a multimeter to test the input voltage. See if it is stable and there is no voltage input, so as to eliminate the problem of power input.

2. The multimeter measures the motor output line of the inverter to see if the inverter has motor output control under the power-on condition. At the same time, go to the scene to see if the motor is running.

3. Measure the insulation resistance of the motor to see if the motor itself is damaged, and ensure that the inverter is not stopped because of the motor itself.

4. Remove the inverter wiring cover and measure the control input power of the inverter to see if it is normal.

5. Inverter control signals include: output signals and feedback signals. If necessary during inspection, you can short-circuit or disconnect digital signals or input and output analog signals to judge the inverter's response.

6. * Insurance method. Generally, the control inverter in a certain factory or an office building is a brand. If it is the same model with a brand, remove the display panels of other inverters and install them to the non-display. Above, observe if there is any display,

At this time, it is the most common method used in practice, which is very effective. If there is a display after changing, check and compare the parameter settings of the same motor of the same power to see if there is data loss, and you can rewrite it if necessary.

The parameters of the display panel of the inverter and the inverter controller can be copied to each other. Of course, the program parameters of the display panel can also be copied and stored in the inverter controller, which is equivalent to rewriting, of course, from the inverter controller to the display panel. The data conversion is similar, which is convenient for parameter setting and sharing.

7. If the input power, output power, control input power, control signal, feedback signal and motor of the inverter are running normally, and the control panel does not display, then the inverter control panel needs to be replaced.

The control panel of the inverter is generally of the pin type. Pay attention to the alignment of the pins and jacks during the process of inserting or removing the panel, otherwise it will be easily damaged.

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