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For commonly used inverters, when they leave the factory, the manufacturer generally has a default value for each parameter. These parameters are called factory values. Under these parameter values, users can operate normally through panel operation, but panel operation does not meet the requirements of most transmission systems. Therefore, before using the inverter correctly, the user should check the inverter parameters from the following aspects:
Confirm the motor parameters. The inverter sets the power, current, voltage, speed, maximum speed of the motor in the parameters. Frequency, these parameters can be obtained directly from the motor nameplate.
The control method adopted by the frequency converter, namely speed control, torque control, control or other methods. After adopting the control method, static or dynamic identification is generally required based on the control accuracy.
Set the starting mode of the inverter. Generally, the inverter is set to start from the panel when it leaves the factory. The user can choose the starting mode according to the actual situation. Panel, external terminals, communication methods, etc. can be used.
For the selection of given signals, generally the frequency of the inverter can be given in many ways, such as panel setting, external setting, external voltage or current setting, communication mode setting, of course, for the frequency of the inverter The given can also be one or the sum of several of these ways. After setting the above parameters correctly, the inverter can basically work normally. If you want to obtain better control effect, you can only modify the relevant parameters according to the actual situation.
. Handling of parameter setting faults
Once a parameter setting fault occurs, the inverter will not be able to operate normally. Generally, the parameters can be modified according to the instructions. If the above does not work, it is best to restore all parameters to factory values, and then reset according to the above steps. The parameter restoration method is different for each company's inverter.