With the continuous improvement of the degree of screen coating machine Application industrial screen coating machine Application automation, the touch screen is more and more widely used in the pharmaceutical machinery, this paper mainly introduces Pro-face the Pro-face application Pro-face of <a href="/searchfanan.html?search=PLC&select=7">PLC+ touch screen control in the coating machine.
Coating machine is widely used in the fields of pharmaceutical, food, biological products, for a variety of tablets, pills, candy packs all kinds of organic thin film, water soluble film and sugar (in drug can achieve sustained and controlled release effect).
First, the working principle of the coating machine:
The machine cavity core elements in clean sealed rotary drum sieve for stop disorderly movement, under the action of the agitator plate, turning smooth, frequent exchange, according to the process and reasonable process parameters, automatic spray coating medium; at the same time in negative pressure automatic control under the hot air passes through the core elements discharged from the bottom of the mesh, the coating medium in the surface of the core and quick drying, coating film formed on the surface of a smooth solid.
Two, PLC and touch screen control requirements:
1, the output point between 18 to 25 points
2, the input point between 6 to 12 points
3, temperature simulation quantity number: general two and three input, four special road (a road, a road inlet temperature of air temperature, a core temperature; if there are special requirements to measure the temperature of the cleaning fluid). Temperature output two, mainly used to control the wind and the wind out of the heating, the general is the output of the switch control temperature.
4, 1~2 road analog input (mainly used to measure the negative pressure in the cavity), two analog output to control the frequency converter.
5, by the PLC automatic control of negative pressure, air flow, temperature and other process parameters, and can be arranged in a certain sequence of process flow, according to set the automatic work and storage.
6, the negative pressure control module, air temperature setting and controlling and adjusting drum revolutions all operations can be completed on the touch screen.
Now on the market of the coating machine manufacturers are using PLC+ touch screen control mode, the day of the electronics company has been designed for a pharmaceutical factory matching, the use of the permanent Hong +GP37W2 (PLC) FBE-40MC (Chu Moping).