PCS-F process control system training equipment

Ⅰ、Overview:

The PCS-F process control system training equipment is a set of experimental equipment based on PCS fieldbus control. It is a multifunctional experimental device integrating automation instrument technology, computer technology, communication technology, and automatic control technology. The system includes thermal parameters such as flow, temperature, and liquid level, and can realize various control forms such as system parameter measurement, single-loop control, cascade control, feedforward control, and ratio control. It uses fieldbus liquid level transmitters, pressure transmitters, turbine flowmeters, frequency converters, electric control valves, temperature transmitters, and distributed I/O modules. This experimental equipment can be used as an experimental device for undergraduate, junior college, and higher vocational process control courses, as well as a physical simulation object and implementation method for graduate students and scientific researchers in the study of complex control systems and advanced control systems. It can also be used as an experimental method for learning fieldbus process control.

The PCS-F process control system experimental device adopts Siemens' fieldbus process control system, and the monitoring software uses SIMATIC WINCC.

Fieldbus is a system based on the idea of fully integrated automation. The core of its integration is a unified process database and a unique database management software. All system information is stored in a database and only needs to be entered once, which greatly enhances the integrity of the system and the accuracy of information. Communication uses programming software and field equipment library that conforms to the IEC61131-3 international standard, providing continuous control, sequential control and high-level programming languages. The field equipment library provides a large amount of commonly used field equipment information and function blocks, which can greatly simplify configuration work and shorten the engineering cycle. It has standard interfaces such as ODBC and OLE, and uses open networks such as Ethernet and PROFIBUS fieldbus, so it has strong openness and can easily connect to the host computer management system and control systems of other manufacturers.

Ⅱ、Product structure and features:

1. Three water tank configuration; dual-way water supply system.

2. The experimental cabinet is completely open, and all internal devices are visible, which is conducive to intuitive teaching and maintenance.

3. Humanized design, equipped with water storage tanks, water inlet and outlet automatic control devices, to reduce the labor intensity of experimental personnel.

4. The instruments and components of the device are all modern technology industrial-grade products with a high degree of intelligence. Good precision, various specifications. It is conducive to intuitive teaching and broadening students' industrial field knowledge. It lays a solid foundation for entering the society in the future. 5. High safety, the system is equipped with leakage protection, and the temperature control box prevents automatic control of waterless heating, etc., striving to protect personal and equipment safety. 6. Good openness. Under the guidance of teachers, students can observe, participate in the operation by themselves, program by themselves for verification, and conduct theoretical analysis based on the recorded real-time curves. 

Ⅲ、Equipment configuration

1. Power supply

Single-phase AC power supply: 220VAC±10%, 50Hz±5%, 16A, the system must be well grounded;

2. The laboratory should have a water source and an inlet and outlet, and the distance between the inlet and outlet and the equipment is generally required to be less than 10 meters;

3. The system provides a DC linear regulated power supply 24VDC/1A;

4. Upper computer configuration software: widely used configuration software;

5.Dimensions:object:1600mmX750mmX1850mm,control cabinet: 830mmX750mmX1900mm;

6. Weight: laboratory cabinet, about 200Kg; laboratory table + laboratory rack, about 250Kg;

7. Stainless steel magnetic pump three-phase magnetic pump: MP-55RM-380 no leakage, low noise, three-phase 220vAC, 5 0Hz;

8. Stainless steel magnetic pump two-phase magnetic pump: MP-55RM no leakage, low noise, three-phase 220vAC, 50Hz;

9. Temperature control and voltage regulation module + radiator: fully isolated single-phase AC thyristor voltage regulation module; control signal: 4-20mA;

10. Pt100 temperature sensor and temperature transmitter: Pt100: Class A; temperature transmitter: 0.5 level accuracy, 0-100℃;

11. Intelligent electric control valve: control signal 4-20mA;

12. Diffused silicon pressure (liquid level) transmitter: diffused silicon isolation probe, 0.5 level accuracy; output signal: select 4-20mADC (two-wire system);

13. Flow meter and flow transmitter: range: select 0-800L/h; output signal: 4-20mADC; accuracy: 0.5 level;

14. CPU Siemens S7-1200, 1215C, 125KB program storage space;

15. Frequency converter ≥0.75KW; power factor ≥ 0.9; output frequency: 0~550 Hz, accuracy: 0.01Hz;

16. Profibus-PA temperature bus instrument, temperature measurement with PA output;

17. Profibus-PA liquid level bus instrument, liquid level measurement with PA output;

18. Programming cable;

19. Acrylic water tank Three round plexiglass water tanks;

20. Stainless steel temperature control test box

21. Pure hysteresis test device

22. Stainless steel water tank

23. 2 solenoid valves

24. 4 contactors

25. 4 relays

26. 2 liquid level probes

27. Experimental table and experimental rack

IV、Experimental items of process control system training equipment

(I) Characteristic experiment

1. Single-capacity characteristic experiment of water tank

2. Double-capacity characteristic experiment of water tank

3. Double-capacity characteristic experiment of upper and lower water tanks

4. Electric valve flow characteristic experiment

5. Frequency converter flow characteristic experiment

6. Temperature characteristic experiment

7. Three-capacity experimental characteristic experiment

(II) Single-loop control experiment

1. Single-capacity liquid level control experiment of electric regulating valve branch

2. Single-capacity liquid level control experiment of frequency converter branch

3. Double-capacity liquid level control of upper water tank Experiment

4. Double-volume liquid level control experiment of upper and lower water tanks

5. Three-volume liquid level control experiment

6. Electric regulating valve branch flow control experiment

7. Frequency converter branch flow control experiment

8. Boiler tank temperature control experiment

(III) Cascade control experiment

1. Double-volume cascade control experiment

2. Upper water tank liquid level and electric valve branch flow cascade control experiment

3. Upper water tank liquid level and frequency converter branch flow cascade control experiment

4. Three closed-loop three-volume liquid level cascade control experiment

(IV) Ratio control experiment

1. Single closed-loop ratio flow control experiment

2. Follow-up flow ratio control experiment

(V) Feedforward feedback control experiment

1. Upper water tank liquid level flow feedforward feedback control experiment

(VI) Decoupling control experiment

1. Upper water tank double-volume liquid level decoupling control experiment

Synchronous PC version:

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