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SINAMICS G:压力控制型压缩机
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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
Picture 01
Downloads
for SINAMICS G120/G120P, CU230P-2 from FW V4.4
77491582_pressure_controlled_compressor_V1.1_en.pdf (607,2 KB)
77491582_Pressure_controlled_compressor_V1_2_en.zip (7,6 KB)
Last Changes
09/2013: Script and PDF revised for FW from V4.4
02/2017: Tested with Firmware V4.7 SP6 HF2 and STARTER V4.5.1.0
Additional Keywords
motioncontrol_apc_applications
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