DYWXC-87 Advanced Maintenance Electric Experimental Device

1. Overview:
**The m*ntenance electrician tr*ning platform is designed according to the requirements of the "Worker Level Standards" and "Occupational Skills Appr*sal" issued by the Ministry of Labor and Social Security. It is suitable for "Elementary M*ntenance Electrician " and "Intermediate M*ntenance Electrician" " and "**M*ntenance Electrician" textbooks require electrical control circuits. Through the tr*ning of the PLC programmable controller and frequency converter speed regulator equipped with the device and the corresponding tr*ning modules, you can quickly master the practical application technology and operating skills required by the course, with Targeted, practical, scientific and advanced, it can meet the requirements of technician skills and the assessment syllabus for middle and high-level m*ntenance electricians. Ideal equipment for skills assessment.
2. Features of the device:
1. The electrical control circuit components are all installed on the mounting plate as a hanging board, which is easy to operate and replace, making it easy to expand functions or develop new tr*ning, and the selection of operation content is typical and practical;
2 .The operation console only needs a three-phase four-wire AC power supply before it can be put into use;
3. The control circuit for skill tr*ning and the specially designed small motor can simulate various electrical drive systems in the factory and satisfy the needs of m*ntenance electricians. Technical requirements for installation, debugging, fault analysis and troubleshooting;
4. The device is equipped with voltage and current leakage protectors to ensure the safety of the operator;
5. All components are led to the terminal blocks through wires, and students When wiring, you only need to wire on the terminals, which is beneficial to protecting components;
6. Route wires through wire troughs for process wiring tr*ning.
3. Technical performance:
1. Input voltage: 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: <1.5KVA 
4. Weight: 100Kg
5. Dimensions: 2080×700×1630mm3
6. Leakage protection action current: ≤30mA; leakage protection action time: ≤0.1s.
4. Basic configuration and functions of the device
 (1) DW01 power control chassis
The power control chassis is made of iron with a double-layer matt dense pattern spray-p*nted structure and an aluminum panel. Provide AC power, DC power, safety protection, etc. for experiments. The specific functions are as follows:
1. M*n control function board
(1) Three-phase four-wire power input, after passing through the leakage protector, passing through the m*n switch, and operated by the contactor through the start and stop buttons;
(2) There is a 450V pointer on the control screen One AC voltmeter, which can observe three grid voltages by switching the band switch;
2. AC and DC power supplies
(1) Excitation power supply: DC 220V/0.5A, with short-circuit protection.
(2) Armature power supply: DC 0~220V/2A continuously adjustable power supply with short circuit protection.
(3) DC regulated power supply: 24V one channel, two ±12V channels, +5V one channel, with short-circuit soft cutoff automatic recovery protection function.
(4) Constant current source, providing 0-20mA constant current source.
(5) AC power supply: ①. There is a set of transformers. The primary side of the transformer can add 220V or 380V AC power according to different wiring. After closing the switch, the secondary side of the transformer can output 36V, 110V, 20V, 20V. , 12V, 6.3V AC voltage; ②. Equipped with a set of single-phase voltage regulator, which can obt*n AC 0~250V adjustable voltage; ③. The control panel is equipped with a single-phase three-pole 220V power socket and a three-phase four-pole 380V Power outlet.
3. Four 5408 diodes are used for the rectifier circuit of energy-consuming braking;
4. Three 75Ω/50W resistors are used for motor step-down starting, and one 10Ω/25W is used for energy-consuming braking of asynchronous motors. (2) M*n experimental equipment:
1. DW-01 m*ntenance electrician tr*ning component (1)
The hanging board is equipped with AC contactor, button indicator light (6.3V), terminal blocks and safety sockets, etc.
2. DW-02 m*ntenance electrician tr*ning component (2)
The hanging box is equipped with push-in fuses, low-voltage circuit breakers, thermal relays, time relays, terminal blocks and safety sockets, etc.
3. DW-03 m*ntenance electrician tr*ning component (3)
The hanging box is equipped with transfer switches, solenoid valves, cross switches, travel switches, etc.
4. The PLC host hanging box
   is equipped with Mitsubishi FX3U-48mR host, integrated digital I/O (24 digital inputs, 24 digital outputs), RS-422 communication port, SC-09 communication programming cable and switching input and output port, switch etc. Simulation teaching software and industrial control configuration software are randomly configured.
5. The PLC tr*ning demonstration module
 cont*ns analog signals and switching signals, which can simulate the operating status of equipment in industrial sites. Provides three-story elevators , vending machines, robots , automatic doors, light of the sky tower, fully automatic washing machines, automatic molding machines, traffic lights, assembly lines, four-way answering machines, musical fount*ns, rolling mills, m*l sorting, and material sorting Simulation control tr*ning such as picking, multi-level conveyor belts, automobile circuits, tunnel monitoring, escalators, machine tool circuit modifications, etc. The indicator lights use SMD dual-color LEDs, and the panels adopt 3D three-dimensional color matching design to make the simulation objects more intuitive and three-dimensional. The switches adopt The self-resetting and self-locking integrated design makes practical tr*ning flexible and practical, and is suitable for various PLC modules with high and low level switching functions of input signals. Compatible with all PLC hosts.
6. Frequency converter tr*ning hanging box
   Equipped with Mitsubishi FR-D720S 0.4KW frequency converter with RS485 communication interface and BOP operation panel.
7. The motor guide r*l and optical code disk speed measurement system
   includes a set of optical code disk speed measurement system (equipped with photoelectric encoder) and 1 guide r*l. The r*l has good flatness, no stress deformation, and good concentricity.
8. A set of industrial control configuration software:
   Open the software programming environment, and you can edit configuration bar diagrams with intuitive and dynamic images and good digital effects for any practical tr*ning, and conduct dynamic tracking and teaching for practical tr*ning.

9. A set of PLC simulation tr*ning software:
(1) Display the running status of PLC in real time through the PLASH virtual environment
(3) PLC programming tr*ning, PLC program writing and testing and other functions
(4) Realize PLC running simulation and check error programs
10. Electronics Technology comprehensive application tr*ning module
The tr*ning circuit board module is composed of a PCB panel and a magnetic fixing mechanism. Each tr*ning project is equipped with an independent tr*ning circuit board module; the tr*ning circuit board is equipped with parameter test points and fault setting switches. Tr*ning circuit board The PCB panel has a clean surface, clear lines of tr*ning circuits and symbols, the surface is wear-resistant, and components are easy to replace; the component circuit symbols marked on the panel adopt national standards, and have a compact overall structure, beautiful appearance, and simple installation. Features include easy use and storage. The wire jack adopts an anti-rotation socket, and the wire is equipped with an elastic plug that can be plugged on the module to ensure reliable connection for various tr*nings; during tr*ning, the corresponding tr*ning circuit board can be selected according to the tr*ning content and skill tr*ning needs. Modules etc.
The tr*ning circuit board module is equipped with a public tr*ning base. The public tr*ning base is matched with the magnetic fixing mechanism of the tr*ning circuit board module. During tr*ning, you only need to place the tr*ning circuit board module on the public tr*ning base. It can be firmly attached to the public tr*ning base and then do the required tr*ning projects. The structure of the public tr*ning base is in line with ergonomic design, and the tr*ning operation is convenient, scientific and reasonable.
11. Motor:
(1) Three-phase squirrel cage motor AC220V (Y)
(2) Three-phase squirrel cage motor AC380V (Y/△)
(3) Two-speed asynchronous motor AC380V (△/YY)
(4) Three-phase wire-wound asynchronous Motor AC380V (Y)
(5) Three-phase synchronous motor AC 380V (Y)
(6) DC shunt motor DC220V
(3) Tr*ning table
The specifications of the experimental table are 1600 (length) * 700 (width) * 1500 (height), There is a drawer and a keyboard, and a computer host is installed behind the lower right corner of the table. The m*n structure of the experimental table is all made of high-performance surface-oxidized aluminum profiles and one-time aluminum die-cast frame connecting components. The connecting components adopt die-casting molding process (non-welding process), and are machined, shot blasted, sandblasted, surface electrostatic sprayed, and installed. Convenient and fast, users can DIY the assembly by themselves. The uprights of the table body are made of industrial aluminum profile molding technology, with surface oxidation treatment. The cross-sectional size is 70×70mm, with grooves on all sides, the width of the groove is about 8mm, and the ends are equipped with plastic plugs. The desktop is made of 25mm E1 grade melamine decorative panel. There is a support frame under the desktop panel with a bearing capacity of not less than 300kg. Equipped with a storage cabinet to store tr*ning hanging boxes, etc. The bottom of the storage cabinet has 4 high-strength universal brakeable PU casters for easy movement. The overall tr*ning device is simple but not simple, high-end and in line with modern product aesthetics and development trends.
The two legs at the back of the experimental table extend upward, and are equipped with two specially-molded aluminum profiles with chute beams to form an electrical experiment hanging box bracket. The bracket is matched with the electrical control experiment hanging box, making it easy to move up and down and shift left and right. Install the power control chassis on the top of the bracket.
· Practical tr*ning items
(1) Electrical control tr*ning
1. Three-phase asynchronous motor direct starting control circuit                                         
2. Three-phase asynchronous motor inching control circuit
3. Three-phase asynchronous motor self-locking control circuit
4. Three-phase asynchronous motor button interlocking Forward and reverse control circuit
5. Three-phase asynchronous motor contactor interlocking forward and reverse control circuit
6. Three-phase asynchronous motor double interlocking forward and reverse control circuit
7. Three-phase asynchronous motor workbench automatic round-trip control circuit
8. Two sets Three-phase asynchronous motor sequential start and sequential stop control circuit                                 
9. Two-place control circuit of three-phase asynchronous motor
10. Y-△ control controlled by contactor
11. Y-△ control controlled by time relay
12. Three-phase asynchronous motor single Brake control circuit with reverse connection to start
13. Three-phase asynchronous motor without transformer half-wave rectification one-way start energy consumption
Brake control circuit
14. Three-phase asynchronous motor with transformer full-wave rectification one-way start energy consumption
Brake control circuit
15. Three-phase asynchronous motor forward and reverse start energy consumption braking control circuit
16. Two-speed AC asynchronous motor manual transmission control circuit
17. Two-speed AC asynchronous motor automatic transmission control circuit
18. Power-off delay DC energy consumption braking Y- △Start control circuit
19. Three-phase asynchronous motor forward and reverse energy consumption braking control circuit
20. Three-phase asynchronous motor forward and reverse start and reverse braking control circuit
21. C620 lathe electrical control circuit
22. Three-phase wire-wound type Asynchronous motor manual control circuit
23. Three-phase wire-wound asynchronous motor automatic starting control circuit
24. Simple synchronous motor energy consumption braking control circuit
25. DC motor starting speed regulation
26. Shunt DC motor armature circuit series resistance starting and speed regulation
27. Thyristor - DC speed
regulation (2) Machine tool intelligent assessment circuit:
1. Inspection and elimination of common faults in the electrical control circuit unit of the CA6140 lathe (10 fault points, automatic fault setting,
intelligent assessment)
1) The spindle motor is missing a phase, and KM1 triggers when entering The circuit is broken before the point;
2) The spindle motor is missing a phase, and the circuit is broken between the KMM1 contact and FR1;
3) The control loop f*ls, and the circuit is broken between FU1 and TC;
4) The tool holder rapid movement motor is missing a phase, and the circuit is broken between FU1 and KA2 Open circuit between the contacts;
5) One phase of the tool holder rapid movement motor is missing, and the circuit is open between the KA2 contact and the tool holder rapid movement motor;
6) Spindle motor, tool holder rapid movement, cooling pump control f*lure, transformer TC and FU2 There is an open circuit between them;
7) The control of spindle motor, tool post rapid movement and cooling pump f*ls. There is an open circuit between the two normally closed contacts of the thermoelectric device FR1 and FR2;
8) The spindle motor cannot be started, and the circuit between the KM1 wire package and TC is open;
9) The tool holder rapid movement and the cooling pump control cannot be controlled. The connection between buttons SB1 and SB2 is disconnected;
10) The cooling pump control f*ls, and there is an open circuit between the start button QS2 and the normally open contact of KM1;
2. Inspection and elimination of common faults in the electrical control circuit unit of
the
and the lighting transformer is out of power;
2. 2) The spindle motor is missing a phase when starting;
3. 3) The spindle motor is missing one phase regardless of whether it is rotating forward or reverse;
4. 4) The spindle motor is missing a phase regardless of whether it is rotating forward or reverse;
5. 5) The rapid feed electromagnet cannot move;
6. 6) The lighting and control transformer is out of power, the light does not light up, and the control circuit f*ls;
7. 7) The control transformer is out of power, and the control circuit f*ls;
8. 8) Remove the cooling pump and spindle Except impulse, all other controls are invalid;
9. 9) Spindle impulse f*ls;
10. 10) Spindle brake f*ls;
11. 11) Spindle start f*ls;
12. 12) Worktable feed control and rapid feed control f*l;
13 . 13) The spindle operation cannot be started;
14. 14) The spindle point axis only moves inching and cannot self-lock;
15. 15) The feed control and rapid feed of the circular table are completely disabled;
16. 16) The control switch of the circular table When SA1 is in the off position, the feed control f*ls forward, downward, backward, and upward, and there is no feed impulse;
(3) Electronic technology comprehensive application circuit tr*ning

1. Electronic alarm
2. Electronic doorbell circuit
3. Light control circuit
4. Light control circuit switch
5. Navigation light
6. Household desk lamp dimming circuit
7. Exhaust fan automatic opening and closing circuit
8. Flash light
9. Temperature control circuit
10. Music doorbell circuit
(4) PLC programmable controller basic circuit Practical tr*ning
1. AND, OR, non-logic function test
2. Timer and counter function test
3. Jump and branch function tr*ning 
4. Shift register test
5. Data processing function tr*ning
6. Differential and bit operation test
7. Three Floor elevator control
8. Vending machine
9. Robot
10. Automatic door
11. Light of the sky tower
12. Fully automatic washing machine
13. Automatic forming machine
19. M*l sorting
20. Material sorting
21. Multi-level transmission
22. Eight sections Code display
23. Mixing of multiple liquids
24. Double-sided milling machine
25. Electroplating tank
26. AC motor forward and reverse control
27. Car movement
28. Mixing station
29. Automobile lighting control
30. Automobile spark plug ignition control
31. Machining center control
32. Tunnel monitoring
33. Escalator
34. CA6140 ordinary lathe PLC transformation control
35. X62W** milling machine PLC transformation control
36. T68 horizontal boring machine PLC transformation control
37. M7120 surface grinder PLC transformation control
38. Z3050 radial drilling machine PLC transformation control
39. Electric hoist PLC transformation control
40. Z35 radial drilling machine PLC transformation control
41. M1432A** cylindrical grinder PLC transformation control
(5) PLC** Comprehensive skills tr*ning
1. PLC controlled three-phase asynchronous motor forward and reverse control
2. PLC controlled three-phase asynchronous motor Y-△ start control
3. PLC controlled three-phase asynchronous motor step-down start control
4. PLC controlled three- phase asynchronous motor Phase asynchronous motor energy consumption braking control
5. Frequency converter function parameter setting and operation
6. Frequency converter alarm and protection function
7. Multi-stage speed selection and frequency conversion speed regulation
8. External terminal jog control
9. Control of motor forward and reverse motion control
10 .Control motor running time operation
11. Instantaneous power outage inverter parameter setting
12. External voltage frequency conversion speed regulation
13. External current frequency conversion speed regulation
14. Frequency conversion open-loop speed regulation of three-phase asynchronous motor
15. PLC control frequency converter speed regulation
16 .Practical tr*ning on touch screen
17. Practical tr*ning on communication between touch screen and PLC
6. Overall configuration table 1

 
Table 2. **M*ntenance electrician electrical control practical tr*ning assessment hanging box configuration description table