The Design of Air Compressor Control System Based on PLC and INSPEC

Aiming at the defect of relay control system of a compressed air station unit, a compressed air station relay control system is modified based on PLC and frequency conversion technology. A detailed analysis and design for the composition of the control system hardware, network architecture, system features, such as real-time monitoring of the implementation is conducted. Siemens S7-200 PLC centralized control system is used as the central control processor for frequency start, run, switch, fault alarm and data acquisition etc. Operating parameters will be uploaded to the host monitoring machine via Ethernet, and configuration software INSPEC is employed for detailed monitoring system configuration, and relevant data storage, query, reporting, diagnosis etc. Practical operation indicates that the system is stable, safe and reliable.