The industry that is applied to geared motors is generally a concern: the geared motor works abnormally, such as the motor does not turn on, the work is weak, the sound is loud, etc. For this reason, Taiwan Yongkun Motor shares a few solutions based on its own consumption experience. The method for the geared motor to work abnormally. If the geared motor is weak and the sound increases, it is necessary to stop the measurement of the output voltage of the inverter. Since the output voltage is proportional to the output frequency, the voltage is not a certain value, but the three-phase voltage is balanced. Therefore, to measure the output voltage is to measure whether the three-phase voltage can be balanced or out of phase in practice. The output voltage of the inverter is unbalanced, mainly because a certain switch arm switch is defective or damaged, resulting in a phase-out or unbalanced output voltage. Regarding the over-voltage problem of the inverter, if there is no feedback China Brake Gear Motors, the ordinary voltage will not exceed 540V. If this value is exceeded, most of the inverter generates feedback power.
In some places, the reason why the inverter generates the feedback power is not obvious. You can connect the voltmeter for a long time to monitor the voltage on the DC bus to see when the voltage rises and whether there is a corresponding relationship with the operation of the load. To affirm the source of overvoltage. The method to measure the DC bus voltage is to set the 47-type multimeter to the 1000V DC range and measure the voltage at both ends of the DC bus. The overvoltage alarm value of the ordinary inverter is designed to be between 700 and 780V. When the measured value is within this range, it is stated that The inverter did have an overvoltage problem. If the voltage is below 540~700V and is in the normal range, the voltage detection circuit of the inverter is falsely reporting. The false alarm of the inverter is that the DC bus voltage exceeds 540V, but has not reached the set value of the over-voltage alarm and generates an alarm.
In addition, if the carrier frequency of the inverter is set too low, the carrier frequency can be set higher, but this will cause some problems. If the carrier frequency is adjusted too high, it will cause interference to other equipment, especially when using In the PLC communication mode. Therefore, the carrier frequency should be set according to the actual conditions of the site. If the three-phase output voltage of the inverter is balanced and not from time to time, the cause lies in the geared motor itself. At this time, it is time to find the cause or deal with it one by one.
When looking for problems from the geared motor itself, we must first look at the number of phases of the motor, if it is a single-phase motor; check if the capacitor is damaged, if it is a three-phase motor; check if there is a problem with the winding. The motor can be reduced with load. If the geared motor has been used for a long time or the quality of the motor is not good, the load can be reduced. At this time, the noise of the motor will be greater than normal. If the motor cooling fan is damaged or the motor casing is scratched, the motor is not stable, etc. In short, if it is possible to focus on prevention, prevent pre-separation, and address and deal with problems, it will be conducive to the durability of the geared motor.
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