Application design of PLC and HiNet industrial intelligent gateway in the remote control system of air compressor

1. Application background

In many large-scale projects such as metallurgy, chemical industry, electric power, and pharmaceuticals, the construction of air compressor station is an important auxiliary project. The main equipment of the air compressor station is an air compressor, an air dryer, a matching filter, an air storage tank, connecting pipes and valves to form an air supply system. Ensuring qualified air supply quality, meeting stable air supply pressure, and automatic adjustment of air supply flow are the basic tasks of air compressor station automation.

2. Application requirements:

1) Each equipment should have automatic control and interlocking protection device, and be equipped with a touch screen for on-site observation of various process parameters and equipment status, manual/automatic switching operation and emergency shutdown;

2) The on-site control room should have a computer operating station to monitor the entire production process through the establishment of a network of equipment;

3) The operation station of the air compressor room should be networked with the plant control center and be monitored remotely in real time by the controller of the control center, so that the air compressor station is unattended.

Third, the composition of the air compressor remote control system

The PLC collects the parameters of the air compressor, such as temperature, pressure, running time, faults, etc., and uploads them to the HiNet industrial intelligent gateway and the PLC-based HiCloud cloud monitoring server, and accepts the control commands issued by the operator, and then transmits the corresponding commands Give the air compressor to realize the remote control function and make corresponding alarm instructions.

Application design of PLC and HiNet industrial intelligent gateway in the remote control system of air compressor

The system is mainly composed of air compressor, plc, HiNet industrial intelligent gateway, network communication and other parts.

The functions that the system can realize are:

1. Realize remote control of air compressor

2. Realize remote upgrade of device firmware

3. Realize remote programming and debugging of industrial field PLC

4. Realize remote control of industrial field touch screen

5. Realize remote mapping of industrial site configuration screens

6. Realize hardware analysis of mainstream protocols such as Siemens and Mitsubishi PLC

The networked control system improves the automation degree of equipment operation in the factory and reduces the maintenance cost of the equipment. It can effectively realize the remote monitoring of the air compressor station without being on duty. And it can realize the processing procedures of fault detection and fault diagnosis, which further improves the effectiveness and reliability of the automatic control system.

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