First, carry out no-load test operation on the inverter.
First check whether all wiring of the inverter is correct. The output of the inverter should not be connected to the motor first, and the inverter should be tested with no load first. Please read the user manual of the inverter carefully before powering on, familiar with related functions and settings, operation methods and power supply. The no-load test operation has two purposes: one is to get familiar with the keyboard and related operation methods through actual operation, and the other is to get familiar with the setting and operation methods of related functions by combining physical objects. After the setting is completed, you can try the basic functions and action status of the action process, such as the rise and fall time settings. On this basis, check the signals and control actions of the external terminal. If the potentiometer rotates clockwise or the frequency is given, the output frequency of the inverter changes at the same time as the given signal.
Second, the no-load trial operation of the inverter motor
After the inverter no-load test runs normally, the motor can be connected for no-load test run. Before connecting the motor, make sure that the various technical specifications of the motor meet the requirements. The motor has no load. Then let the inverter drive the motor to see if it is normal, such as whether the direction of rotation of the motor meets the requirements.
Finally, on-load operation debugging of the inverter
Before starting debugging, please check whether there is no person working around the load and whether there are no foreign objects on the load before commissioning. When debugging, first give a small frequency, observe whether the load is running smoothly, whether there is abnormal sound, and whether there is a cause analysis; observe whether the torque and current of the inverter are abnormal. When the inverter load starts, the current torque is large. When running to a given frequency, the current torque is relatively stable. Moreover, after the external load-in, the torque current is also reduced to a certain extent. If the load of the inverter always reaches the rated value after running, you need to judge whether the selection of the inverter and the motor matches the load. If so, it is necessary to consider replacing the first type of inverter and motor in time to be able to control the current. The torque reaches the range; in addition, according to the load characteristics, set a reasonable acceleration and deceleration time to ensure that the inverter does not report an overcurrent fault during operation and startup.
Therefore, the commissioning of the inverter is a complicated process. Any negligence at any time can lead to serious consequences. When you encounter problems or some strange phenomena, you must find a reason to protect personal safety and equipment safety.