I. Overview

The modern electrical control system installation and debugging training device encompasses a wide range of specialized and core technical skills, including electrical automation technology, electrical equipment application and maintenance, mechatronics technology, low-voltage electrical manufacturing and application, power supply and consumption technology, rural electrification technology, electrical measurement and control technology, industrial networking technology, electrification of railway technology, opto-mechanical application technology, and building water and electricity technology. It promotes deep integration between education and industry, schools and enterprises, curriculum design and vocational positions. It supports the construction of electromechanical and automation majors in national vocational colleges, the development of training bases, the enhancement of faculty teams, the reform and optimization of curriculum teaching, and fosters skilled professionals with excellent practical abilities and innovative capabilities in modern electrical control system installation and debugging.

The design of the electrical control system installation and debugging training device encompasses the basic design of electrical circuits, conventional relay control, PLC and communication, touch screen configuration control, PWM control, DC speed control, sensor technology, encoders, asynchronous motors, and special-purpose motors. This setup achieves open-loop and closed-loop control for various control and controlled quantities, with different motors as the ultimate control targets. It reflects the systematicness, comprehensiveness, and integrity of electrical control, forming a variety of competitive content.

Modern electrical control system installation and debugging training equipment covers core skills such as control circuit design, circuit layout, connection technology and debugging, independent function programming and debugging of working units, overall function programming and debugging of the control system, and electrical control system fault repair. It also assesses competitors' work efficiency, quality awareness, safety awareness, energy-saving and environmental protection consciousness, and professional demeanor.

Electrical control systems utilize a touchscreen interface to PLC, then to D/A, followed by a variable-frequency drive and a rotary encoder, and finally to A/D, back to the PLC, and then to the touchscreen. This setup employs open and closed-loop position control methods, allowing for parameter adjustments to meet varying system requirements, thereby ensuring the control system fulfills the necessary functional specifications.

Through this practical training, the core technical skills of electrical students, such as basic electrical skills, motor and electrical control, PLC application technology, electrical measurement and instrument adjustment, power electronic technology, AC/DC speed regulation, configuration control technology, and industrial field networks, were demonstrated. Additionally, professional qualities such as work efficiency, quality awareness, safety consciousness, energy conservation and environmental protection awareness, and standard operation were also showcased.

The modern electrical control system installation and debugging training device features circuit design, installation, and wiring of electrical control systems, sensor wiring and adjustment, PLC programming, analog module applications, HMI configuration, motor drives (including inverters and corresponding motors, servo drives and servo motors, stepper motors and drivers, relay control and protection, temperature controllers, incremental encoders) parameter settings, and troubleshooting of typical machine tool control circuit faults. The device allows for real-time manual input of multiple parameters (such as real-time speed variations, real-time temperature changes, real-time distance changes, etc.), achieving real-time system control. It realistically simulates and reflects the industrial control process, offering a wide range of practical training content with diverse variations. It is a typical vocational skills training equipment that significantly enhances students' professional abilities through practical training on this device.

This unit is primarily a standard electrical distribution cabinet, utilizing the double-sided space of the cabinet body rationally, and scientifically arranging electrical equipment and supporting experimental equipment. The purpose of this utility model is to overcome the deficiencies in the existing technology, providing an innovative technical solution that occupies less space, has a reasonable layout, is compact in structure, is fully functional, and improves assessment efficiency. This type of maintenance electrician teaching cabinet for practical training and assessment includes a cabinet frame, observation window, instrument operation panel, electrical system, and motor assembly.

Modern Electrical Control System Installation and Commissioning Training Equipment Technical Specifications

1. Input Voltage: Three-phase five-wire ~380V±10% 50Hz

2. Working Environment: Temperature range -10℃ to +40℃; Relative humidity <85% (at 25℃); Altitude < 2000m

3. Unit Capacity: <1 kVA

4. Dimensions: 850mm x 800mm x 1800mm

5. Computer Desk Dimensions: Length x Width x Height = 600mm x 530mm x 1000mm

6. Safety Protection: With leakage protection, safety meets national standards

Section 3: Equipment Structural and Functional Features for Modern Electrical Control System Installation and Commissioning Training Assessment

1. This unit consists of a control cabinet, controlled objects, and forms a complete system. It features a small footprint, ease of operation, mobility, built-in lighting facilities, and an operational panel. All control points and communication interfaces are connected to a dedicated terminal board, making practical training more convenient.

2. Control components (such as PLCs, variable-frequency drives, contactors, etc.) are mounted using a guide rail system, allowing for reasonable adjustments during practical training as needed. Wiring is done using industrial conduit boards, and the equipment's inlets and outlets are connected to the controlled objects via flexible plastic tubes and connectors. The controlled objects are externally mounted for ease of observation.

3. This device features a modular structure with strong scalability. By selecting different configurations and adjusting system parameters, it meets the control system requirements.

Section 4: Examples of typical practical training projects that this equipment can complete

1. Transformer switches connected to a voltmeter for measuring three-phase voltage

2. Measurement of three-phase current

3. Usage of Comprehensive Electric Meters

4. Direct start and stop control for three-phase asynchronous motors

5. Contactor Interlock Three-Phase AC Induction Motor Forward and Reverse Control Circuit

6. Three-phase AC asynchronous motor forward and reverse control circuit with button interlock

7. Three-phase AC asynchronous motor control circuit for forward and reverse operation, featuring button and contactor interlock

8. Y-Δ (Manual Switch) Starting Control Circuit for Three-Phase AC Induction Motors

9. Y-Δ (time relay switching) starting control circuit for three-phase AC asynchronous motor

10. Stator winding series resistance start control circuit

11. Three-phase AC asynchronous motor energy-saving braking control circuit

12. Three-phase AC asynchronous motor step-down starting and reverse-connection braking control circuit

13. Sequential control circuit for two electric motors

14. Motor reciprocating travel control circuit

15. Standard Lathe Control Circuit

16. Electric Hoist Control Circuit

17. Control Circuit for Single-Phase AC Induction Motors with Point and Continuous Rotation

18. Dual Control Circuit

19. Contactor-controlled dual-speed motor speed control circuit

20. Time Relay Switched Dual-Speed Motor Speed Control Circuit

21. Counter-rotating switch with braking control coordination

22. VFD (Variable Frequency Drive) Panel Function Parameters Setup and Operation

23. External Terminal Point Operation Control

24. Multi-speed motor control

25. Frequency Switching Control for Industrial and Variable Frequencies

26. PLC-based Analog Variable Frequency Open-loop Speed Control

27. Open-loop speed control for motors based on panel operation

28. Open-loop speed control for variable-frequency drives based on PLC communication

29. PLC-controlled motor sequential startup

30. Touchscreen Parameter Settings and Programming

31. Touchscreen Configuration for Single-Step and Self-Locking Control of Three-Phase Induction Motor

32. Configurable touch screen control for three-phase asynchronous motor forward and reverse operation

33. Touchscreen Configuration Control for Three-Phase Asynchronous Motor Star-Delta Start

34. Touchscreen Configuration Control Variable Frequency Drive Analog Speed Control

Step Motor Driver Parameters Setup

36. Stepper Motor Control

37. PLC Open-loop Control for Stepper Motors

38. Encoder Usage

39. Encoder-based Stepper Motor Closed-loop Control

40. Parameter Setting for Communication Servo Drives

41. Closed-loop control of AC servo motors

42. Temperature Controller Calibration and Use of Resistance Thermometers

43. PLC Temperature Control Based on Resistance Temperature Detector

44. Sensor Usage

45. Sensor-Based PLC Position Control

46. Multiple PLC Master and Slave Station Communication

47.X62W Milling Machine Electrical Control Circuit Unit Common Faults Inspection and Troubleshooting Training

48. Common Faults and Troubleshooting for the T68 Lathe Electrical Control Circuit Unit

V. Configuration of modern electrical control system installation and debugging training equipment, Table 1: Specific technical parameters of the equipment

Appendix 1: Mitsubishi Programmable Logic Controller