Application requirements
I/O density, cycle time, motion or process requirements, field distances and maintenance needs are assessed together. This defines the requirements of the working system, not just individual products.
Veikong · Compressed air
Constant-pressure control for air compressors
This compressed air application uses AC drive and pressure feedback to address field control, reliable communication and maintainable commissioning.
Solution architecture
The proposed architecture combines AC drive and pressure feedback with the machine’s existing control infrastructure and communication protocols. Final product and module selection depends on site requirements.
How can ProControl help?
ProControl can adapt the solution to local project requirements in Türkiye, from site assessment, I/O planning and protocol selection to panel layout, commissioning and after-sales support.
Official application content
Technical details, tables and application images
The technical workflow and visual information from the manufacturer are presented below.
Application in air compressor with frequency inverter
- Energy saving: Inverter control compressors compared with conventional compressor control,energy conservation is the most meaningful
- Operating cost reduction
- Improve the accuracy of the pressure control
- Extend the life of the compressor
- Reduce Air compressor noise
On-site condition & parameter setting
- Power: 110kw
Production needs gas is 0.76MPa, there is a remote pressure sensor in equipment, which can bring 4-20mA current signal to the inverter, so that the whole system under PID closed-loop control. When the pressure reaches the set limit, the compressor starts unloaded, while the frequency inverter allows the air compressor to run the following limits; when the pressure drops below the set frequency of a certain value, the air compressor starts to load, but the drive to Air machine accelerates to maximum frequency operation. It’s not only quickly and efficiently to meet production needs, but also to maximize energy savings, but also can extend the life of the air compressor.
In order to facilitate repair and maintenance, we use Veikong inverter with cabinet. It can be achieved working frequency switching, when required maintenance, the frequency can start, because the air compressor star-delta starting circuit is still retained. So the user is more convenient to use, you can ensure maintenance overhaul does not stop.(see below picture)
Frequency inverter wire connection :
- Main terminal connection – L1/L2/L3 with 380V input cable and U/V/W connect with motor cable
- Control terminal connection – COM & GND short connect +24V,AI1 connect with 4-20MA current signal which from sensor DI1 , COM connect FWD switch, close RVS and break stop switch
This content is based on the manufacturer’s published Constant-pressure control for air compressors application, adapted by ProControl while preserving its technical scope. View the official manufacturer source.