What Are the Precautions for Motor Inverter Installation?

Electric motors are an indispensable electronic product in our lives. Whether it is large-scale lifting equipment, construction tower cranes, or small appliances that people usually use, such as fans, electric motors are used. It can be seen that the application of electric motors in our lives is still quite extensive. However, everything has its duality, even electric motors. Motors that are often used in daily life often have unstable working frequency, which is prone to unstable motor operation and abnormalities. Therefore, in order to prevent such failures, we have created a motor frequency converter to adjust the frequency of the motor to ensure the normal start of the motor. Then, the editor will introduce to you how to install the motor inverter? What are the precautions for the installation of the motor inverter?

How to install the motor inverter?

1. How to install the motor inverter–installation and usage scenarios
1. Working temperature -10℃~40℃;
2. The relative air humidity shall not exceed 90%RH (no condensation on the surface);
3. No interference signal;
4. No water droplets, steam, acid, alkali, corrosive substances and conductive smoke;
5. There is no severe vibration at the installation site;
6. Avoid sources of continuous high temperature and no direct sunlight;
7. It is strictly forbidden to use directly in flammable, flammable and explosive natural environments.

2. How to install the motor inverter–Installation precautions

1. The indoor space of the installation has excellent natural ventilation, and it should be kept for enough time with the surrounding objects (not less than 100mm left and right, and not less than 50mm up and down);
2. Keep the vertical installation, with the air vent facing downward; the air inlet and air inlet are smooth.
3. Ensure that it is installed in an area that can bear its weight.
4. Ensure that it is installed on non-combustible materials.

3. How to install the motor frequency converter–wiring The most basic wiring of the frequency converter is shown in the figure, and consumers should connect properly according to this during installation and use.

What are the precautions for motor inverter installation?

1. Precautions for physical usage scenarios
The operating temperature of new products is generally required to be between 0 and 50°C, but in order to ensure safe and reliable work, a margin should be left during use, and it is best to operate within 40°C. Do not install heating elements or heating elements close to the bottom of the inverter.

2. Matters needing attention in the stage of electrical equipment
a. Avoid interference signals
b. Avoid overvoltage at the input end

3. Notes on basic parameters
Before using the inverter, set the voltage of the inverter to 380V, and the frequency of the substrate to 50HZ; set the maximum frequency and limit frequency of the pump and centrifugal fan load to 50HZ, and the minimum frequency to 15~20HZ; the acceleration and deceleration are based on the volume of the motor and carrying capacity are clear.

4. Matters needing attention in the wiring process
In the process of installation, testing, and maintenance, it is often necessary to carry out terminal wiring. Do not connect the power plug to the output terminal of the inverter; and do not mistake the “N” terminal in the output terminal block of the inverter for the neutral point terminal of the switching power supply. The wiring of the control circuit should be avoided as far as possible from the wiring of the main circuit.

5. The grounding wire and lightning protection of the inverter
The correct grounding device of the inverter is an important way to improve the sensitivity of the automatic control system and control the noise level. The less resistance of the grounding wire of the inverter terminal block E (G), the better. The cross section of the grounding device wire should not be less than 2mm2. The length should be kept at 20 meters. In areas where lightning strikes are active, if the switching power supply enters the line with an empty frame, it is necessary to install a special frequency conversion high-voltage arrester at the line entry, or to embed a seamless steel pipe grounding protection 20 meters away from the frequency converter according to the standard.

6. Precautions for inverter operation
During the test run, it must be run once without load, then with load, and then with load. The running and stopping operation of the inverter does not need to use the method of turning on the power supply of the inverter.