DYDG-TS Industrial Communication DC System Experimental Platform

(3) Technical parameters

1. AC power supply: three-phase five-wire AC 380 V±10% 50Hz;

2. Temperature: -10~50℃; Environmental humidity: ≤90% without water condensation;

3. Overall dimensions: length × width × height = 1800mm × 760mm × 1770mm;

4. Machine power consumption: ≤1.5 kVA;

5. Safety protection measures: The desktop of the tr*ning platform is made of high-density board with high insulation, high strength and high temperature resistance. It has grounding protection and leakage protection functions, and its safety complies with relevant national standards. Use high-insulation safety sockets and high-strength safety experimental wires with insulating sheaths

(4) Functional features

The overall structure of this equipment:

The tr*ning table of this equipment is made of iron spray-p*nted structure, and the tabletop is made of fireproof, water-repellent, wear-resistant high-density board, with a solid structure. The shape is like a rectangular closed structure, with beautiful appearance. It has 4 small drawers for placing tools, parts and materials, etc.; there is also a large storage box for storing large tools or tr*ning equipment. The tabletop provides a spacious and comfortable work surface. The tr*ning table is also equipped with 4 universal wheels and 2 fixed adjustment structures, which are easy to move and fix, and are conducive to the layout of the tr*ning room.

This device leads all the terminals on the fully digital DC speed regulator to the panel, completely separating strong and weak currents to enhance the safety of the device. Other configuration equipment adopts a hanging box structure, which has the advantages of strong mobility, scalability, and easy m*ntenance. Also includes the following features:

1. Networking: Networking is the m*nstream of automation control in the world today. Today's DC speed regulators can not only control DC motors through traditional digital and analog I/O points on the speed control host , but also control DC motors through The human-machine interface, PLC fieldbus or industrial Ethernet technology realizes information resource sharing and control of the speed regulator to control the DC motor. To avoid the monotonous control phenomenon caused by the lack of sharing of information resources for stand-alone equipment, you can even use a computer to network with it and configure it on the computer through configuration software to complete remote monitoring of the tr*ning device.

2. On-site: Traditional teaching and tr*ning equipment is only a product designed and manufactured purely to complete the school's verification tr*ning, resulting in a disconnect between teaching and the actual automated production equipment in the factory. Therefore, on-site education is very necessary. This product is selected Industrial products and the latest industrial technology are fully in line with industrial field application standards.

3. Practical tr*ning: The purpose of open teaching is m*nly to improve students' practical ability. All hardware circuits of the speed regulator in this device are described in det*l on the panel in the form of an open structure, and the corresponding I/O All points are led out through professional weak current terminals, and students can conveniently and flexibly make their own wiring combinations by selecting special tr*ning wires.

4. Advanced nature: The DC speed regulator used in this device is the latest industrial product today. It uses two high-efficiency CPUs as the core and incorporates powerful and rich control, computing and communication processing software, making it possible to simulate the The complex speed regulation drag control implemented in the DC speed regulation drive device can be easily realized in this tr*ning module.

5. Diversification: In order to reflect the current diversification of DC motor speed regulation as much as possible, we can provide a variety of control methods. In addition to the general conventional DC motor speed regulation control tr*ning, this tr*ning device can also be used if a process board is added. (repurchase required), various complex transmission controls can be realized, such as tension, position, coiling, swing, etc. Teachers can flexibly choose the control method according to the different teaching purposes of the school.

Functional features of each unit and device of this equipment:

(1) DC speed regulator

 Rated armature voltage: 420V

 Rated excitation voltage: 325V

 Rated armature current: 15A

 Rated excitation current: 3A

 The maximum output power is: 6.3kw

 Communication port: There are two communication ports. One supports the USS communication protocol to complete the functions of staff setting and data recording, and the other supports the PROFIBUS-DP communication protocol to complete the connection with the field bus.

(2) Instrument

 A digital DC voltmeter: measuring range is 0~500V, three and a half digit display, multi-level measurement: 0~1V, 0~10V, 0~100V, 0~500V, accuracy level 0.5, capable of Ethernet communication. Read the voltage value and save it, draw a dynamic curve for analysis, and have over-range protection and other functions to provide voltage indication for the reversible speed control system.

 A digital DC ammeter: measuring range is 0~5A, three and a half digit display, multi-level measurement: 0~5mA, 0~50mA, 0~500mA, 0~5A, accuracy level 0.5, capable of Ethernet communication, reading Get the current value and save it, draw a dynamic curve for analysis, with an accuracy of 0.5, with over-range protection and other functions, and provide current indication for the reversible speed control system.

 A precision pointer DC voltmeter with a mirror: the measurement range is 0~±300V, the accuracy is 1.5, and it provides voltage indication for the reversible speed control system;

 A precision pointer type DC ammeter with a mirror: the measurement range is 0~±2.0A, the accuracy is 1.5, and it provides current indication for the reversible speed regulation system.

(3) Security protection

 A set of three-phase "C" type isolation transformers (three pieces): The three-phase power supply first passes through the three-phase leakage protector, and then passes through the contactor to the three-phase C-type isolation transformer, which isolates the output from the power grid and plays a cert*n role in protecting the human body. Protective effects.

 Leakage protector: Protects the leakage phenomenon in the line of the isolation transformer, causing the contactor in the control handle to trip and cut off the power supply.

 Tr*ning cables and sockets: Safety complies with relevant national standards, and all materials comply with environmental standards. The connections and sockets adopt fully enclosed technology, making them safe, reliable, and anti-electric shock.

(4) Alarm function: You can set the equipment power supply time and power outage time, time timing during tr*ning, fault alarm and other functions.

(5) Control panel: Siemens 6RA70 series full digital speed regulator is placed on the front of the control panel, and all terminals of the speed regulator are led to the panel, and strong and weak currents are distinguished; there is a large groove on the front with a st*nless steel rod inside. Practical tr*ning components can be mounted.

(6) Power supply unit: The power supply unit is equipped with power indicator light, three-phase *r switch, single-phase *r switch, fuse, AC contactor (to lead electric shock to the panel), DC pointer voltmeter and ammeter, DC digital The power supply for devices such as explicit voltmeters and ammeters, time managers (LCD displays), emergency stop buttons, keyboards and AC220V power sockets are provided by these sockets; single-phase three-level 220V power sockets are provided on both sides of the control panel.

(7) Motor speed measurement system: This unit is equipped with a DC separately excited motor, a three-phase squirrel cage asynchronous motor, a dynamometer, a tachometer generator, a rotary encoder, an iron installation guide r*l, a machine base, etc.

(8) Touch screen hanging box: An industrial touch screen is used as the human-machine dialogue interface, and the SIEMENS TP177A human-machine interface is used. It can not only monitor the equipment in use, but also simply control the equipment. It is widely used in industrial sites. STN liquid crystal display (LCD) 4 blue tones, 5.7 inches (320×240), 1 RS422, 1 RS485.

(9) S7-300 PLC programmable controller hanging box: PLC is at the core of the industrial control system. In order to ensure strong performance, this equipment uses Siemens’ S7-300 programmable controller. The PLC working memory capacity is 64 KB working memory; 0.1 ms/1000 instructions; integrated DI16/DO16; 3-channel pulse output (2.5 kHz); 3-channel counting and measurement incremental encoder 24 V (30 kHz); MPI+ DP connector (DP master or DP slave); multi-row configuration of up to 31 modules; send and receive functionality for direct data exchange; constant bus cycle time; routing; S7 communication (loadable FB/ FC); firmware V2.6; DI/DO maximum 1024/1024 points; can be used by teachers to complete graduation projects or postgraduate projects, etc. In order to highlight the communication function of PLC, in addition to the host computer, it is also equipped with an Ethernet communication module (customers can request it), which can complete the communication between PLC and Ethernet equipment.

(10) Practical tr*ning components: equipped with toggle switch, adjustable potentiometer, +24V/2A DC power supply, AC220V AC contactor, etc.

(11) Industrial network card and communication line: CP5611 card and MPI cable

(12) System software: The device provides three types of software. The first type is the configuration software of the DC speed control host, which completes the setting and modification of various parameters of the host. The second type is programming software, including PLC's SETP7 programming software, etc.; the third type is Complete the monitoring of equipment for industrial control configuration software; the software can be flexibly selected according to requirements.

(13) Network connector: PROFIBUS-DP communication, MPI communication and other communication methods.

(5) Practical tr*ning projects

 Industrial touch screen programming

 Siemens S7-300 programmable controller (PLC) programming;

 Full digital DC speed regulator (6RA70 series) parameter setting and basic control tr*ning;

 Motor no-load (EMF control mode) speed given fixed value debugging tr*ning;

 Motor no-load (EMF control mode) speed given actual value debugging tr*ning;

 Full digital DC speed regulator (6RA70 series) open-loop speed regulation tr*ning;

 Full digital DC speed regulator (6RA70 series) current loop (inner loop) speed regulation tr*ning;

 Full digital DC speed regulator (6RA70 series) speed loop (outer loop) speed regulation tr*ning;

 Full digital DC speed regulator (6RA70 series) double closed-loop speed regulation tr*ning;

 Full digital DC speed regulator (6RA70 series) non-independent field weakening control tr*ning;

 RS232 communication tr*ning between PC and fully digital DC speed regulator (6RA70 series);

 Siemens MM420 inverter parameter setting and basic control tr*ning;

 Use Siemens MM420 frequency converter to adjust the speed of the motor;

 The frequency converter MM420 enables the motor to start at a fixed frequency;

 The frequency converter MM420 adjusts the motor speed through the speed regulating potentiometer;

 The frequency converter MM420 adjusts the speed through the digital input terminal;

 The frequency converter MM420 performs fixed frequency setting through the digital input terminal;

 WinCC industrial control configuration software programming;

 Stand-alone control based on USS communication method;

 Parameter monitoring tr*ning of touch screen and frequency converter MM420;

 A speed control system composed of PLC and DC speed regulator based on PROFIBUS-DP communication method;

 A speed control system composed of PLC, touch screen and DC speed regulator based on PROFIBUS-DP communication method;

 Speed ​​control system based on PLC and frequency converter MM420 based on PROFIBUS-DP communication method;

 Practical tr*ning on PLC, touch screen, and frequency converter MM420 speed control system based on PROFIBUS-DP communication method.

The list of items

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