The sea for the C60S2R series PLC application design - in the film and packaging industry Industrial control -

A thin films and packaging industry, the application background, composite coating, two or three synchronous electrical, heating and fan control.

second, the application needs to use the ModBus PLC communication function, control the operation of the inverter frequency, using the logical control and sequence control program to simplify the control circuit of the scene.

3, solution 1, traditional coating machine control, use relay control circuit, the circuit is complex, is not conducive to maintenance;

2, use temperature controller to control temperature, line is complex, easy to bad;

3, master-slave control of frequency converter, using proportion synchronous controller to control, the setting is not convenient, use potentiometer to control, analog signal drift, control is not stable.

4, the use of sea for C60S2R PLC controller, the use of logic and suitable control procedures, to simplify the external circuit, convenient maintenance, line is concise and beautiful.

5, through the PLC internal math model, to run the double motor or motor inverter proportional control calculation, reaches accurate frequency converter speed, and then by the PLC controller built-in ( Save hardware cost) 485 communication port, convenient to use the ModBus communication instruction, the few simple command, you can control several to dozens of frequency converter control, also can undertake other communications intelligent controller ( Such as temperature module) ; Four, hardware configuration,

figure 1 sea for PLC C60S2R

figure 2 equipment panorama

5, the software design of figure 3 part program screenshots 1

figure 4 part program screenshots 2

figure 5 part program screenshots 3

figure 6 part program screenshots 4

6, using the result using the sea for PLC summed up as follows:

1, the high-quality goods in the domestic PLC, powerful, rich instruction, simple to use, the key also bring offline simulation function, to the program development to save time.

2, economical and practical, simplify the traditional relay circuit of choice.

for the use of the sea for the function of the PLC and the economy, is to choose the main purpose of it, improve the level of equipment has a great space and competitiveness.

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