Several methods of the inverter can be debugged
The inverter realizes speed regulation firstly to ensure that the line connection is correct, and secondly, the parameters of the inverter are debugged correctly, the inverter power supply is correct, and the inverter load is correct. Under the condition that there are no problems with the above, the inverter can adjust the speed through the following methods .
1. Speed regulation through the panel, the inverter itself has its own control panel, which can be adjusted by the up and down keys of the control panel. The principle is to change the voltage according to the size of the potentiometer rotating resistance, and finally realize the speed regulation. To realize the panel speed regulation, first set the parameters in the parameters, and then select the HMI terminal for the speed regulation method.
2. Speed regulation through control terminals. Terminal speed regulation can be divided into different signal types, including voltage signals and current signals. Voltage signals are generally 0 to 10 volts, current signals are generally 4 to 20 mA, and voltage and current signals are generally 4 to 20 mA. Some are selected by parameters, some are selected by the jumper of the inverter, for example, to select the current signal of 4 to 20 mA, the current input signal of the terminal needs to be connected to the plc or dcs, when the dcs or plc outputs 4 To 20 mA, after the inverter receives it, it will carry out relevant speed regulation, using terminal speed regulation, when setting the parameters, select the control terminal for the speed regulation mode, which can be changed from 4 to 20 according to the maximum and minimum speed limits of the inverter parameters. The speed corresponding to milliamps.
3. Speed regulation through 485 communication. At present, most inverters on the market have 485 communication function. The communication terminals can be connected to dcs or Plc, host computer, and other control equipment. After connecting the communication cable, according to the inverter manual. The communication protocol and baud rate of the inverter are used for configuration. If multiple inverters are connected, the address needs to be set. After the setting is completed, the relevant data of the inverter can be read from the host computer, or the host computer can write the relevant instructions. Control the frequency converter, and finally realize the purpose of the frequency converter speed regulation.
