1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly;
2. In the water supply controlled by the inverter, the pressure transformer is used as the signal to collect the pressure, and the pressure transformer is interfered by the inverter;
3. When the inverter starts the motor, the voltage transformer signal is unstable and the beating is fierce;
4. The voltage transformer (4-20mA) jumps randomly after the LS inverter is started, while the adjacent integrated thermal resistance (4-20mA) is not affected, and the signal line is not shielded;
These phenomena are due to interference from LS inverters. So why does the inverter interfere? First of all, we all know that the inverter is used to change the frequency. The inverter consists of a rectifier circuit and an inverter circuit, and the input alternating current is converted into DC voltage through the rectifier circuit and flat-wave circuit, and then the DC voltage is converted into pulse voltage of different widths (called pulse width modulation voltage, PWM) through the inverter. By using this PWM voltage to drive the motor, you can adjust the torque and speed of the motor.
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