變頻器控制柜是由PLC控制變頻器及外圍設備所構成的一個系統，它具有顯示，保護等功能，是對三相交流電動機（包括風機，泵）進行變頻調速控制的交流拖動裝置和節能裝置。與傳統的變頻器控制柜相比顯著的特點是能實現PID調節。

The frequency converter control cabinet is a system composed of PLC controlled frequency converters and peripheral equipment, which has functions such as display and protection. It is an AC drive device and energy-saving device for frequency conversion speed control of three-phase AC motors (including fans and pumps). The significant feature compared to traditional frequency converter control cabinets is the ability to achieve PID regulation.

變頻器控制柜功能

Function of frequency converter control cabinet

電源切換與保護：PLC變頻柜中設有斷路器與進線電源相連，除能完成接通和分斷電路外，可對電路和變頻器發生的短路，過載進行保護。并可在維護時切斷電源。

Power switching and protection: The PLC frequency converter cabinet is equipped with a circuit breaker connected to the incoming power supply. In addition to completing the connection and disconnection of the circuit, it can also protect the circuit and frequency converter from short circuits and overloads. And the power can be cut off during maintenance.

啟、停控制功能：PLC變頻柜面板上會裝人機界面，在此有變頻啟動，變頻停止按鈕，用于變頻裝置的運行控制。也可以在面板上安裝按鈕。

Start and stop control function: The PLC variable frequency cabinet panel will be equipped with a human-machine interface, where there are variable frequency start and stop buttons for controlling the operation of the variable frequency device. You can also install buttons on the panel.

PLC變頻柜面板上設置電壓表，電流表,頻率表和各種指示燈如電源指示，報警指示，運行指示，工頻指示，實現對變頻器輸入電壓、輸出電流、輸出頻率和各種工作狀態的監測，這樣看很直觀。也可在人機界機中看到這些數據。

The PLC frequency conversion cabinet panel is equipped with a voltmeter, ammeter, frequency meter, and various indicator lights such as power indicator, alarm indicator, operation indicator, and power frequency indicator, to achieve monitoring of the input voltage, output current, output frequency, and various working states of the frequency converter, which is very intuitive. These data can also be seen in the human-machine interface.

通信功能：PLC變頻器控制柜可與上位機聯接，以實現遙控，遙測，遙信。

Communication function: The PLC frequency converter control cabinet can be connected to the upper computer to achieve remote control, telemetry, and remote signaling.

變頻器控制柜典型應用可廣泛應用于冶金、化工、石油、供水、礦山、建材、電機行業等泵類、風機、空氣壓縮機、軋鋼機、注塑機、皮帶運輸機等。

Typical applications of frequency converter control cabinets can be widely used in pump, fan, air compressor, steel rolling machine, injection molding machine, belt conveyor, etc. in metallurgy, chemical industry, petroleum, water supply, mining, building materials, motor industry, etc.