DYDG-JS repair electronics technician skills training device

1. Device characteristics

(1) Each training device consists of a control panel, a training table, a PLC host component, a communication module, an inverter, a touch screen, a training module, etc.

(2) It adopts a pendant structure and has switching, analog, frequency conversion speed regulation, control objects, touch screen, bus communication and other units, which can complete control training and teaching of logic, simulation, process, motion, etc.

(3) Practical training and teaching of industrial control network configuration and monitoring: Connect the student device (slave station) PLC and the teacher's master station PLC system through the RS-485 fieldbus network. The PLC of the student device (slave station) runs the program of the PLC control object. Using the centralized monitoring function of the network, the teacher's main station PLC can monitor the network in real time, meeting the on-site control requirements. Each student can operate and control independently. The above-mentioned various training objects can be controlled through PLC and monitored in real time through MCGS configuration software.

(4) The device is equipped with voltage-type and current-type leakage protectors. Each power output has monitoring and short-circuit protection functions. Each measuring instrument has reliable protection functions, making it safe and reliable to use. The control panel is also equipped with a timer. It also functions as an alarm recorder to record the training and assessment time and the number of misoperations.

2. Technical performance

1. Input power: three-phase four-wire (or three-phase five-wire) ~ 380V ±10% 50Hz

2. Working environment: temperature -10℃～+40℃, relative humidity <85% (25℃), altitude <4000m

3.Device capacity: <0.5KVA

4. Overall dimensions: 1680mm×700mm×1300mm

5. Safety protection: It has leakage voltage and leakage current protection devices, and is safe and in line with national standards.

6. Virtual multimeter parameters:

AC voltage ranges: 10, 50, 250, 1000

DC voltage range points: 0.25, 1, 2.5, 10, 50, 250, 1000

Ohm scale: x1, x10, 100, 1000, 1K, x10K, x100K

Ammeter gears: 50μa, 0.5, 5, 50, 500

BATT: 1.2-3.6V, RL=12Ω

BUZZ：R×3

Infrared emission detection function: vertical angle ±15°, distance 1-30cm

Transistor measuring hole

3. Basic configuration and functions of the training device

The training device consists of a control screen, a training table, a Mitsubishi host training component, a training simulation object hanging box (containing a wealth of industrial field equipment simulation training objects), physical objects, an inverter hanging box, a touch screen hanging box, and an AC motor . , contactor, bus unit, communication module, industrial control configuration software, simulation software, motor guide rail and speed measuring mechanism.

(1) Control screen

1. The three-phase four-wire 380V AC power supply supplies power to the device after passing through the air switch. The grid voltmeter monitors the grid voltage and is protected by an illuminated fuse. The power supply of the control panel is controlled by a key switch and a start-stop switch. It also has a leakage alarm indication and The alarm is reset. Timer and alarm recorder: usually used as a clock, with functions such as setting time, timing alarms, cutting off power, etc.; it can also automatically record the number of leakage alarms caused by wiring or operation errors.

2. DC power supply: one channel of adjustable DC voltage output from 0 to 15V, and one channel adjustable output of DC current from 0 to 20mA.

3. Intelligent DC voltmeter: Measuring range: 0-1000V

4. Intelligent DC ammeter: Measuring range: 0-5A

5. Function module: eight-digit level display, eight-digit logic level output, eight inching switches, a set of floor and direction displays, music box, DC 24V relay, and several signal conversion sockets.

6. FX host training components: equipped with Mitsubishi FX3U-48 mT host, integrated digital I/O (24 digital inputs), FX2N-485BD communication module (2 A/D inputs, 1 D/A output) And RS-485 communication module, supporting SC-09 programming cable.

7. Maintenance of electricians, electronic motors and vocational qualification training assessment simulation software

This software is in apk format and can be used on PC or mobile. This software can set faults manually or automatically. This software can manually set fault points through the green box in the circuit diagram (you can set up to 39 fault points), you can also automatically set one random fault point, two random fault points, three random fault points, four random fault points, and five random fault points through the system. It has functions such as toolbox, component library, magnifying glass, circuit diagram, etc. You can choose a multimeter for testing through the toolbox, select appropriate components through the component library, and clearly understand each component and circuit through the magnifying glass. This software allows students to understand the working principle and circuit structure of the motor star-delta start control circuit through the setting of faults in the motor star-delta start control circuit and various investigations.

8. Microcontroller , PLC programmable design and control virtual simulation software:

This software is developed based on unity3d and has built-in experimental steps, experimental instructions, circuit diagrams, component lists, connection lines, power on, circuit diagrams, scene reset, return and other buttons. After the connections and codes are correct, you can start/stop, The forward movement and reverse movement buttons operate the 3D machine tool model to move. In the connected line state, the 3D machine tool model can be enlarged/reduced and translated.

Relay control: Read the experiment instructions and enter the experiment. By reading the circuit diagram, select relays, thermal relays, switches and other components in the component list and drag and drop them into the electrical cabinet. The limiter is placed on the three-dimensional machine tool model. , you can choose to cover it, and some component names can be renamed. Then click the Connect Line button to connect the terminals to the terminals. After successfully connecting the machine circuit, choose to turn on the power and proceed. If the component or line is connected incorrectly An error box will pop up and you can reset the scene at any time.

PLC control: The experiment is the same as relay control, with the addition of PLC control function. After the connection is completed, enter the program writing interface through the PLC coding button, and write two programs, forward and reverse, with a total of 12 ladder symbols. After the writing is completed, Select Submit for program verification. After the verification is successful, turn on the power for operation. Error boxes will pop up for component, line connection, and code errors, and the scene can be reset at any time.

Single-chip microcomputer control: The experiment is the same as relay control, with the addition of single-chip microcomputer control function. After the connection is completed, enter the programming interface through the C coding button, enter the correct C language code, and after successful submission and verification, turn on the power for operation, and connect the components and lines. If there is a code error, an error box will pop up, and the scene can be reset at any time.

(2) Practical training hanging box

4. Motor guide rail, optical code disk speed measurement system and digital display tachometer: including Japanese Omron 1024 photoelectric encoder and guide rail for fixing the motor, etc. There is a five-digit tachometer on the guide rail panel to display the current speed; it also has a photoelectric coding signal output, including two channels A and B; it also has a voltage feedback signal.

5. Three-phase squirrel cage asynchronous motor: AC 380V/△

6. Physical model:

Intelligent greenhouse control training device (analog quantity)

The intelligent greenhouse control training device mainly consists of temperature setting, fan speed change and host computer software control. The temperature control process is to compare the internal and external ambient temperatures collected by the temperature detection sensor with the set temperature value. The PLC analog module outputs analog quantities according to the temperature difference value to control the heater voltage to control the heating speed. According to the temperature difference value, The fan responds to signals to switch the fan's three operating modes: high speed, low speed, and stop. Light control is to control the action of the sunshade net based on the temperature difference and internal and external light signals. The entire training process can be controlled and monitored in real time through the host computer software or manually controlled. It can carry out skill training on smart greenhouse maintenance, equipment operation and control, and is suitable for practical training and teaching of agricultural automation and other courses.

7. Training table

The training table is made of iron with a double-layer matt dense spray-painted structure. The desktop is made of fireproof, waterproof, and wear-resistant high-density board. There are two large drawers (with locks) on the left and right for placing tools and information. The computer desk is connected Body design, beautiful appearance.

8. Practical training projects

(1) Basic application training of PLC simulation objects

(2) Comprehensive application training of PLC, frequency converter and touch screen

(3) Fieldbus network communication technology training

48. RS-485 network communication technology based on MCGS

(4) PLC control physical model application training

Intelligent greenhouse control training device (analog quantity)

8. Configuration list