2302-32-VLE-2 YOKOGAWA 数据采集器

2302-32-VLE-2 YOKOGAWA 数据采集器

变换为可调电压、可调频率的交流电装置。变频器广泛应用于节能、自动化系统及提高工艺水平和产品质量等方面。变频器的问世，使电气传动领域发生了一场技术革命，即交流调速取代直流调速，变频调速被公认为有发展前途的调速方式。

可编程序控制器简称PLC（Programmable Logic Controller），它是一种数字运算与操作的控制装置，广泛应用于工业控制的各个领域。PLC 通过软件编程和硬件连接可实现复杂的控制任务，控制功能强大，是当代工业控制的三大支柱之一。作为工控产品，变频器和PLC 常配合使用（PLC 作为编程器，变频器作为驱动器），完成控制任务。 

 P L C 与变频器的连接主要方式有：PLC 的数字量输出信号与变频器的数字量输入信号相连；PLC 的模拟量输出信号与变频器的模拟量输入信号相连。实际应用中，就两者正确连接时应注意问题总结如下。同时，变频器运行时会对周围电气设备产生较强的电磁干扰，为防止变频器运行时对PLC 干扰，两者相连接时应重点考虑的问题总结如下。

Alternating current device with adjustable voltage and frequency. Inverter is widely used in energy saving, automation system and improving process level and product quality. The advent of the frequency converter has made a technological revolution in the field of electrical transmission, that is, AC speed regulation replaces DC speed regulation, and frequency conversion speed regulation is recognized as a promising speed regulation method.

Programmable Logic Controller (PLC), it is a digital calculation and operation of the control device, widely used in various fields of industrial control. PLC through software programming and hardware connection can achieve complex control tasks, powerful control function, is one of the three pillars of contemporary industrial control. As an industrial control product, the frequency converter and PLC are often used together (PLC as a programmer, frequency converter as a driver) to complete the control task.

The main ways of connection between PLC and inverter are: PLC's digital output signal is connected with the digital input signal of inverter; The analog output signal of PLC is connected with the analog input signal of inverter. In practical application, the problems that should be paid attention to when the two are correctly connected are summarized as follows. At the same time, the frequency converter operation will produce strong electromagnetic interference to the surrounding electrical equipment, in order to prevent the frequency converter operation of PLC interference, the two should be considered when the connection of the issues summarized as follows.