SINAMICS G：压力控制型压缩机

5.0 分

SINAMICS G120/G120C

驱动技术>低压变频器>SINAMICS G系列变频器>SINAMICS G120/G120C

使用操作

文档编号：77491582| 文档类型：应用实例与扩展工具| 发布时间：2023年12月22日

储罐所采用的固定转速压缩机正日益由带可变速驱动器的压缩机所取代，这些压缩机能够在很窄范围内控制所需的压力。这样就避免了使用固定转速压缩机和储罐时进行耗能很高的过度压缩。

Application description for the scripted commissioning of a SINAMICS G120 for pressure control of a compressor

Task

Compressors and blowers compress the air e.g. the gases up to values significantly above atmospheric pressure. The main applications are

Generation of compressed air for aeration in wastewater sites , pneumatic controls , pneumatic transport for bulk goods , pneumatic compressed air for industrial manufacturing devices, forming containers of glass or plastic (PET ), breathing air (scuba diving , breathing apparatus for fire protection ) , medical applications.
Separation of gases such as in air separation plants.
Compression of the refrigerant in refrigerators after the linden method for freezers in household , commercial refrigeration , refrigerated counters in food retail , industrial refrigeration equipment such as cold stores or refrigerated ships , air conditioning systems for residential, commercial and industrial purposes.

Solution
Increasingly, fixed speed compressors with storage tank are replaced by compressors with variable speed drives, which are able to control the pressure needed in a narrow frame. Energy-intensive over-compression with fixed speed compressors and storage tank is avoided. High starting currents and starting torques with repeated switching on and off are when using the variable speed compressor drives are of the past.

The following description is used to completely set the inverter parameters for the "Pressure controlled compressor" application with up to 4 pumps. It includes a standard connection circuit diagram for the control wiring, a script that can run in the STARTER commissioning software, as well as additional functions, which are used for subsequent parameterization

Screw compressor for compressed air industrial applications

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