First, the frequency converter should not be installed on the equipment with a sensation, because the main circuit connection screw in the frequency converter is simply loose, and many frequency converters are damaged due to this reason.
Second, the wiring problem: the input end of the inverter is connected to an air, and the initial maintenance current should not be too large, so as to prevent incineration in the event of a short circuit. The "N" terminus must not be grounded. Try not to be too long with the control line. Because the control board is simply disturbed by electromagnetic waves and malfunctions, it will also cause damage to the control board, and more than 2 meters long can be shielded wire. Do not install a contactor with high current and often action around the inverter, because it disturbs the inverter very much, and often makes the inverter malfunction (showing various faults).
Third, the inverter that often has to stop abruptly does not rely on the inverter's own brake, but adds another brake electric cathode or adopts mechanical brake, otherwise the inverter is often impacted by the motor back electromotive force, and the fault rate will be greatly improved.
4. If the inverter often runs at a low speed below 15HZ, the motor should add a cooling fan!
Fifth, dust and moisture are the deadly killers of inverters. The inverter can be installed in the air-conditioned room, or installed in the electric cabinet with dust nets, and the dust on the circuit board and radiator should be cleaned on time; The inverter that has been shut down for a period of time can use a hair dryer to blow the circuit board before powering it on.
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** Open the serial port for the first time
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The interaction between the PLC and the touch screen is consistent - Mitsubishi
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