How to choose a Yaskawa inverter model

Create Date: 2024-8-30 12:03:23|Source: YASKAWA/Yaskawa

1. Specifications and parameters of the motor

The inverter drives the motor during use, so the inverter can be selected from the perspective of the motor to select the model and specification. First of all, we must first understand the specifications and parameters of the motor. You can use the Yaskawa inverter model list to understand the parameters of the motor. Among these parameters, the main parameters you need to know are: rated voltage, rated current, rated frequency, rated speed, etc.

2. The rated voltage of the motor

The rated voltage of the motor is generally 110V, 220V, 380V, 690V, 1140V, 6kV, etc. The voltage levels of the inverters produced by our company are: 220V, 380V, 690V, 1140V. If there are other non-standard voltage levels, please consult the manufacturer or local offices and distributors in time.

3. The rated current of the motor

The rated current of the motor varies according to the power of the motor. When selecting the inverter, the rated current of the inverter should be greater than or equal to the rated current of the motor, and the power grade of the inverter should be amplified by one gear in special circumstances.

4. The rated frequency of the motor

The rated frequency of ordinary motors is generally 50-60Hz, and high-speed motors are 1000-3000Hz. The rated speed of the motor: the motor is divided into 2 poles, 4 poles, 6 poles, 8 poles, etc., the higher the number of poles, the lower the speed, and the greater the current of the same power. The rated speed of the motor used by everyone is 1500 rpm, which corresponds to a 4-pole motor. The inverter is also designed according to a 4-pole motor. The 2-pole corresponds to 3000 rpm, the 6-pole corresponds to 960 rpm, and the 8-pole corresponds to about 720 rpm.

5. Temperature and humidity

The influence of temperature on the inverter: the ambient temperature of the inverter is generally applicable to -10 °C - +40 °C, and the humidity is less than 90% of the environment. If the ambient temperature is higher than 40°C, the inverter should be derated by 5% for every 1°C increase. For every 10°C increase in ambient temperature, the life of the inverter is halved, so the problem of ambient temperature and inverter heat dissipation must be solved.

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