CN104091492A - PLC experimental facility - Google Patents
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- CN104091492A CN104091492A CN201410366829.3A CN201410366829A CN104091492A CN 104091492 A CN104091492 A CN 104091492A CN 201410366829 A CN201410366829 A CN 201410366829A CN 104091492 A CN104091492 A CN 104091492A
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Abstract
The invention provides a PLC experimental facility. The PLC experimental facility is composed of a detection instrument, a touch screen, a stepping motor, a stepping motor driver, a power module, an input unit, an output unit, a PLC unit and a PLC extended module. The output unit comprises a frequency changer and an indicator light; the experimental facility is placed in a box body; the touch screen is installed in a first area, the frequency changer, the stepping motor, the stepping motor driver, the detection instrument, the power module, the input unit, the output unit, the PLC unit and the PLC extended module are installed in a second area of the box body. The PLC unit and the PLC extended module are installed on a guide rail; the guide rail is fixed in the middle of the second area. By means of the PLC experimental facility, the integration level of experimental equipment is improved, the working efficiency under different working conditions is improved, cost for purchasing various experimental apparatuses is saved, the experimental facility is convenient to operate and reasonable in design, and the stability and the safety performance are improved.
Description
Technical field
The present invention relates to a kind of PLC experimental provision, particularly a kind of teaching comprehensive experimental device based on PLC.
Background technology
PLC (programmable logic controller (PLC)) is the core technology of modernization automatic control system, is widely used in modern industry automation control area.It adopts a class programmable memory, for its internally stored program, actuating logic computing, sequential control, regularly, the user oriented instruction such as counting and arithmetical operation, and by numeral or analog pattern input/output various types of machinery of control or production run.
At present, national most of science and engineering class universities and colleges electromechanical speciality all offers PLC laboratory.Conventional PLC chamber can coordinate other instruments to complete the normal experiment project of the PLC such as hardware configuration, network communication, typing programming, can assist study and exploitation for PLC.
But because the middle and high level of maintenance electrician, technician, senior technician's etc. training design professional content is very wide, technological leapfrogging is large, existing maintenance electrician's teaching, training, apparatus for checking all adopt the form of multiple different specialized equipments combination examination, input cost is large, inconvenient operation, training and examination setup time is long, is most importantly subject to the limited environmental limit of floor area, is unfavorable for Adaptation of Higher Vocational School Students and social personnel are giveed training with Technique Authentication and examined.The design of most of real training apparatus for checking only can be used in certain a branch of instruction in school, has arrived other other course, must again buy new real training apparatus for checking, and this has just increased very high instruction cost.From security standpoint, consider in addition, school's real training apparatus for checking used must guarantee safe and reliable, just can make student's personal safety obtain due guarantee, although teacher can carry out safety education before at school, the device security that Teaching Instrument Company produces now has much room for improvement.Teachers' instruction operation experiments, because several students operate a testing table simultaneously, causes the poor effect of giving lessons.Simultaneously PLC has relatively high expectations for the power supply of experiment carrying cabinet, anti-interference, Stability Analysis of Structures etc., therefore take into account above-mentioned requirements and have take into account multi-platform PLC feature, cabinet body structure reasonable in design is most important for a multi-platform PLC experimental provision.
The experimental provision integrated level that the present invention exists for PLC experimental provision of the prior art is just low, unstable, inconvenient operation, and cost is high, and security is low, and the improvement made of the irrational defect of structural design.
Summary of the invention
The invention provides a kind of PLC experimental provision, described PLC experimental provision has solved following technical matters: improved service efficiency, reduced experimental cost, easy to operate, experimental provision is reasonable in design, and has improved stability and security performance.
The invention provides a kind of PLC experimental provision, described device is comprised of measuring instrument, touch-screen, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module.Described output unit comprises frequency converter and pilot lamp.Described experimental provision is positioned in casing, and the material of described casing is wooden.Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Described first area is observer's a side, the offside that described second area is first area.Described PLC expansion module is connected with the slot of described PLC unit by cable; Described PLC unit and described PLC expansion module are arranged on guide rail; Described PLC expansion module detachable replacement; Described guide rail is fixed on the centre position of described second area; Described stepper motor and described stepper motor driver are fixed on described guide rail one side; Described frequency converter is fixed on described guide rail opposite side; Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.Described measuring instrument is more than one, for detection of voltage signal, current signal, power signal, frequency signal and power factor.Described power module comprises AC power, D.C. regulated power supply and power switch.Described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described D.C. regulated power supply can provide 24V and 5V power supply.Described power switch connects low-voltage circuit breaker.Described measuring instrument, touch-screen, frequency converter, stepper motor driver, PLC unit and PLC expansion module ground connection.
Compared with prior art, the invention has the beneficial effects as follows: PLC experimental provision has reduced experimental cost, easy to operate, and experimental provision is reasonable in design, and improved stability and security performance.Described device is comprised of measuring instrument, touch-screen, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module, for the experiment about PLC provides basic experiment instrument.Described output unit comprises frequency converter and pilot lamp, and frequency converter can change frequency and the amplitude of AC motor operating voltage.Frequency converter has replaced traditional direct current motor to adjust the rotating speed of stepper motor driver, has dwindled equipment volume, has significantly reduced maintenance rate, has improved the stability of experiment.Output unit can external peripherals, and the diversity of experiment kind is provided.Described experimental provision is positioned in casing, and volume is little and be convenient for carrying, and can be kinds of experiments basic experiment device is provided.Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Described first area is observer's a side, the offside that described second area is first area.The installation site of touch-screen is reasonable, conforms to observer's visual angle, is convenient to demonstration operation simultaneously, and control flow has the function of monitoring alarm and data storage processing, has increased the functional of single unit system, for Comprehensive Experiment provides convenience.Described PLC expansion module is connected with the slot of described PLC unit by cable; Described PLC unit and described PLC expansion module are arranged on guide rail, make PLC unit and expansion module move at any time and to fix according to experiment desired location.Described PLC expansion module is detachable and replace, and according to requirement of experiment, selects suitable PLC expansion module.Described guide rail is fixed on the centre position of described second area; Described stepper motor and described stepper motor driver are fixed on described guide rail one side; Described frequency converter is fixed on described guide rail opposite side; The fixed position of described guide rail, stepper motor, stepper motor driver and frequency converter is conducive to wiring, and the length of required wire or signal wire is the shortest, and cloth line position is avoided the intersection of wire or signal wire as far as possible, not only cost-saving, and the most reasonable in wiring.Described measuring instrument, touch-screen, frequency converter, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.The annexation of described experimental provision is not single, and this just provides condition for the diversity of experiment, and annexation that can be required according to experiment is connected experimental provision is connected by wire or signal wire.Described measuring instrument is more than one, for detection of voltage signal, current signal, power signal, frequency signal and power factor reading out data in real time, for monitoring and the reading of data of experiment are provided convenience.Touch-screen and measuring instrument the use that has reduced peripherals is set, for experimental implementation provides convenience, reduced experimental cost, improved conventional efficient.AC power and direct supply be set to the selection that different experiments provides power supply, power supply arranges rationally.AC power adopts three-phase five-wire mode, and power switch connects low-voltage circuit breaker, and the material of experimental box is wooden, and measuring instrument, touch-screen, frequency converter, stepper motor driver, PLC unit and expansion module ground connection have all ensured the security of experiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one
Fig. 2 is the structural representation of the embodiment of the present invention two
Fig. 3 is the structural representation of the embodiment of the present invention three
Fig. 4 is the structural representation of the embodiment of the present invention four
Embodiment
Embodiment mono-as shown in Figure 1, a kind of PLC experimental provision is comprised of measuring instrument, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module, for the experiment about PLC provides basic experiment instrument.Described output unit comprises frequency converter and pilot lamp.Frequency converter adjustable-speed drive system, changes frequency and the amplitude of the operating voltage of stepper motor driver by variable-frequency driving technique, smoothly control AC electrical motor speed and torque.Frequency converter has replaced traditional direct current motor to adjust the rotating speed of stepper motor driver, has dwindled equipment volume, has significantly reduced maintenance rate, has improved the stability of experiment.
Output unit can external peripherals, and the diversity of experiment kind is provided.Input block can connect required power-supply device.
Described comprehensive experimental device is positioned in casing, and described experimental provision is positioned in casing, and volume is little and be convenient for carrying, and can be kinds of experiments basic experiment device is provided.Described measuring instrument is more than one, and different measuring instruments are the signal such as monitoring voltage signal, current signal, power signal, frequency signal and power factor simultaneously.Reading out data in real time, for monitoring and the reading of data of experiment are provided convenience.
Described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Experimental apparatus is integrated in second area, and experimental implementation is convenient.Described PLC expansion module is connected with the slot of described PLC unit by cable.Described PLC unit and described PLC expansion module are arranged on guide rail, make PLC unit and expansion module move at any time and to fix according to experiment desired location.Described PLC expansion module is detachable and replace, and according to requirement of experiment, selects suitable PLC expansion module.Described guide rail is fixed on the centre position of described second area; Described stepper motor and described stepper motor driver are fixed on described guide rail one side; Described frequency converter is fixed on described guide rail opposite side; The fixed position of described guide rail, stepper motor, stepper motor driver and frequency converter is conducive to wiring, and the length of required wire or signal wire is the shortest, and cloth line position is avoided the intersection of wire or signal wire as far as possible, has ensured the accuracy of experiment.Not only cost-saving, and the most reasonable in wiring.Described measuring instrument, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.The annexation of described experimental provision is not single, and this just provides condition for the diversity of experiment, and annexation that can be required according to experiment is connected experimental provision is connected by wire or signal wire.For the kinds of experiments equipment that provides the foundation, for example basic real training of PLC, PLC comprehensive practical traning, the understanding of frequency converter, operation, setting parameter and communication real training, the use programmed method skill of analog module 2AD, the 4DA of analog quantity program, PID computing etc.
Described PLC unit and PLC expansion module can be different model, for operator provides different choice.Described power module comprises AC power, D.C. regulated power supply and power switch.Described D.C. regulated power supply can provide 24V and 5V power supply.Power supply provides AC and DC, for different experiments provides, can select power supply.
Described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described power switch connects low-voltage circuit breaker; The material of described experimental box is wooden; Described measuring instrument, frequency converter, stepper motor, stepper motor driver, PLC unit and expansion module ground connection.The security that the above has not only ensured instrument, prevents electric leakage, has also guaranteed operating personnel's security simultaneously.
Described PLC experimental provision provides different electrical power for testing, and PLC unit and PLC expansion module can be different model, for operator provides different choice.Output unit can external peripherals, and the diversity of experiment kind is provided.Input block can connect required power-supply device.Equipment volume has been dwindled in the use of frequency converter, has significantly reduced maintenance rate, has improved the stability of experiment.Three-phase five-wire mode power supply, low-voltage circuit breaker, tank material are selected wooden and measuring instrument, frequency converter, stepper motor, stepper motor driver, PLC unit, PLC expansion module ground connection ensures and improved the security of experiment.Described measuring instrument is reading out data in real time, for monitoring and the reading of data of experiment are provided convenience.Equipment volume has been dwindled in the use of frequency converter, has significantly reduced maintenance rate, has improved the stability of experiment.
Embodiment bis-as shown in Figure 2, a kind of PLC experimental provision, described device is comprised of measuring instrument, touch-screen, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module, for the experiment about PLC provides basic experiment instrument.Frequency converter adjustable-speed drive system, changes frequency and the amplitude of the operating voltage of stepper motor driver by variable-frequency driving technique, smoothly control AC electrical motor speed and torque.Frequency converter has replaced traditional direct current motor to adjust the rotating speed of stepper motor driver, has dwindled equipment volume, has significantly reduced maintenance rate, has improved the stability of experiment.
Output unit can external peripherals, and the diversity of experiment kind is provided.Input block can connect required power-supply device.
Described comprehensive experimental device is positioned in casing, and described experimental provision is positioned in casing, and volume is little and be convenient for carrying, and can be kinds of experiments basic experiment device is provided.Described measuring instrument is more than one, and different measuring instruments are the signal such as monitoring voltage signal, current signal, power signal, frequency signal and power factor simultaneously, and reading out data in real time, for monitoring and the reading of data of testing are provided convenience.
Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Described first area is observer's a side, the offside that described second area is first area.The installation site of touch-screen is reasonable, conforms to observer's visual angle, is convenient to demonstration operation simultaneously, and control flow has the function of monitoring alarm and data storage processing, has increased the functional of single unit system, for Comprehensive Experiment provides convenience.When touch-screen is connected with measuring instrument, while forming closed-loop path, touch-screen can be read the number of degrees of measuring instrument simultaneously, for reading out data provides data intuitively simultaneously.Touch-screen and measuring instrument the use that has reduced peripherals is set, for experimental implementation provides convenience, reduced experimental cost, improved conventional efficient.Described PLC expansion module is connected with the slot of described PLC unit by cable.Described PLC unit and described PLC expansion module are arranged on guide rail, make PLC unit and expansion module move at any time and to fix according to experiment desired location.Described PLC expansion module is detachable and replace, and according to requirement of experiment, selects suitable PLC expansion module.Described guide rail is fixed on the centre position of described second area; Described stepper motor and described stepper motor driver are fixed on described guide rail one side; Described frequency converter is fixed on described guide rail opposite side; The fixed position of described guide rail, stepper motor, stepper motor driver and frequency converter is conducive to wiring, and the length of required wire or signal wire is the shortest, and cloth line position is avoided the intersection of wire or signal wire as far as possible, has ensured the accuracy of experiment.Not only cost-saving, and the most reasonable in wiring.Described measuring instrument, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.The annexation of described experimental provision is not single, and this just provides condition for the diversity of experiment, and annexation that can be required according to experiment is connected experimental provision is connected by wire or signal wire.For the kinds of experiments equipment that provides the foundation, the for example basic real training of PLC, PLC comprehensive practical traning, the understanding of frequency converter, operation, setting parameter and communication real training, the use programmed method skill of analog module 2AD, the 4DA of analog quantity program, PID computing, stepper motor positioning control, the understanding of control touch-screen, operation, application real training etc.
Described PLC unit and PLC expansion module can be different model, for operator provides different choice.Described power module comprises AC power, D.C. regulated power supply and power switch.Described D.C. regulated power supply can provide 24V and 5V power supply.Power supply provides AC and DC, for different experiments provides, can select power supply.
Described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described power switch connects low-voltage circuit breaker; The material of described experimental box is wooden; Described measuring instrument, frequency converter, stepper motor, stepper motor driver, PLC unit and expansion module ground connection.The security that the above has not only ensured instrument, prevents electric leakage, has also guaranteed operating personnel's security simultaneously.
Described PLC experimental provision provides different electrical power for testing, and PLC unit and PLC expansion module can be different model, for operator provides different choice.Output unit can external peripherals, and the diversity of experiment kind is provided.Input block can connect required power-supply device.Equipment volume has been dwindled in the use of frequency converter, has significantly reduced maintenance rate, has improved the stability of experiment.Three-phase five-wire mode power supply, low-voltage circuit breaker, tank material are selected wooden and measuring instrument, frequency converter, stepper motor, stepper motor driver, PLC unit, PLC expansion module ground connection ensures and improved the security of experiment.Equipment volume has been dwindled in the use of frequency converter, has significantly reduced maintenance rate.Described device also comprises measuring instrument, and reading out data in real time, for monitoring and the reading of data of experiment are provided convenience.Touch-screen is arranged on observer's a side, and structure arranges rationally, is convenient to demonstrate intuitively operation.And control flow has the function of monitoring alarm and data storage processing, increased the functional of single unit system, for Comprehensive Experiment provides convenience.Described PLC experimental provision has reduced the use of peripherals, for experimental implementation provides convenience, has reduced experimental cost, has improved conventional efficient.
Embodiment tri-as shown in Figure 3, automatic assembly line installation and debugging system, by a kind of PLC experimental provision, coordinate installation and adjustment, described device is comprised of measuring instrument, touch-screen, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module.Described output unit comprises frequency converter and pilot lamp.Described experimental provision is positioned in casing, and the material of described casing is wooden.Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Described first area is observer's a side, the offside that described second area is first area.Described PLC expansion module is connected with the slot of described PLC unit by cable, and described PLC unit and described PLC expansion module are arranged on guide rail, described PLC expansion module detachable replacement, and described guide rail is fixed on the centre position of described second area.Described stepper motor and described stepper motor driver are fixed on described guide rail one side, and described frequency converter is fixed on described guide rail opposite side.Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.Described measuring instrument is more than one, for detection of voltage signal, current signal, power signal, frequency signal and power factor.Described power module comprises AC power, D.C. regulated power supply and power switch.Described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described D.C. regulated power supply can provide 24V and 5V power supply.Described power switch connects low-voltage circuit breaker.Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, PLC unit and PLC expansion module ground connection.
Automatic assembly line is connected with described automatic assembly line installation and debugging system by described load module.Described frequency converter, touch-screen, stepper motor are connected with described PLC unit respectively, and described PLC unit is connected with scrambler, and described PLC unit is connected with described PLC expansion module, and described PLC expansion module is connected with A/D module.Described stepper motor is connected with described stepper motor driver.Described touch-screen is connected with power module, and described power module is selected direct supply 24V.The small volume of A/D module, scrambler and stepper motor, thus automatic assembly line installation and debugging system can in described experimental box, coordinate installation, easy to operate.
Described automatic assembly line installation and debugging system has been used load module, output module, touch-screen, power module, PLC unit, PLC expansion module, stepper motor and the stepper motor driver in described PLC experimental provision, has accessed A/D module and scrambler simultaneously.In described automatic assembly line installation and debugging system, do not use measuring instrument, described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.Touch-screen can replace the data such as measuring instrument reading current, voltage, frequency.
Signal wire, by the external PC of communication port of PLC unit, is written into program.The effect of touch-screen can start/stop the indication of operation and duty, the settings such as electric current, voltage, frequency of reading current frequency converter, by the workpiece cumulative data of each groove in touch screen display, and can be by data zero clearing.Frequency converter can change the frequency of voltage, thereby regulates the speed of stepper motor, and A/D module converts analog quantity to digital quantity and shows by touch-screen.Power module provides power supply for touch-screen.Stepper motor can be controlled catching robot and accurately locate, and workpiece is accurately placed into the position of appointment.Scrambler feeds back to step actuator by the angle of stepper motor rotation, when step actuator is received after feedback signal, then carrys out the rotation of control step motor; Thereby formation closed-loop control, to reach the position of accurate control step motor rotation.
Embodiment tetra-as shown in Figure 4, workshop motor electric energy monitoring system, by a kind of PLC experimental provision, coordinate installation and adjustment, described device is comprised of measuring instrument, touch-screen, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module.Described output unit comprises frequency converter and pilot lamp.Described experimental provision is positioned in casing, and the material of described casing is wooden.Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing.Described first area is observer's a side, the offside that described second area is first area.Described PLC expansion module is connected with the slot of described PLC unit by cable, and described PLC unit and described PLC expansion module are arranged on guide rail, described PLC expansion module detachable replacement, and described guide rail is fixed on the centre position of described second area.Described stepper motor and described stepper motor driver are fixed on described guide rail one side, and described frequency converter is fixed on described guide rail opposite side.Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.Described measuring instrument is more than one, for detection of voltage signal, current signal, power signal, frequency signal and power factor.Described power module comprises AC power, D.C. regulated power supply and power switch.Described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described D.C. regulated power supply can provide 24V and 5V power supply.Described power switch connects low-voltage circuit breaker.Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, PLC unit and PLC expansion module ground connection.
Described workshop motor is connected with workshop motor electric energy monitoring system by described load module.Described measuring instrument is connected by 485 buses with described PLC unit, and described measuring instrument can connect more than one.Described touch-screen is connected with described PLC unit, and power module is connected with touch-screen, and power module is selected 24V direct supply.Described PLC unit is by the external contactor of wire, and described PLC unit is connected with PC by modbus bus.Workshop motor electric energy monitoring system can coordinate installation in described experimental box, easy to operate.
Described workshop motor electric energy monitoring system has been used load module, output module, measuring instrument, touch-screen, power module, the PLC unit in described PLC experimental provision, has accessed scrambler simultaneously.In described automatic assembly line installation and debugging system, do not use stepper motor, stepper motor driver and PLC expansion module, described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.
Modbus bus, by the external PC of communication port of PLC unit, is written into program.Thereby the effect of touch-screen can start/stop the duty of indication control motor of operation and duty.By touch-screen picture, read each phase current, voltage, power from instrument, general power, active power, reactive power, power factor, also can be by arranging the various parameters that show each time period.Power module provides supply voltage for touch-screen.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in invention contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection domain of claims of the present invention.
Claims (9)
1. a PLC experimental provision, is characterized in that: described experimental provision is comprised of measuring instrument, touch-screen, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module; Described output unit comprises frequency converter and pilot lamp; Described experimental provision is positioned in casing; Described touch-screen is arranged on the first area of described casing, and described frequency converter, stepper motor, stepper motor driver, measuring instrument, power module, input block, output unit, PLC unit and PLC expansion module are arranged on the second area of described casing; Described PLC expansion module is connected with the slot of described PLC unit by cable; Described PLC unit and described PLC expansion module are arranged on guide rail; Described PLC expansion module detachable replacement; Described guide rail is fixed on the centre position of described second area; Described stepper motor and described stepper motor driver are fixed on described guide rail one side; Described frequency converter is fixed on described guide rail opposite side; Described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, power module, input block, output unit, PLC unit and PLC expansion module are by the connection of wire or signal-line choosing.
2. PLC experimental provision according to claim 1, is characterized in that: described measuring instrument is more than one.
3. PLC experimental provision according to claim 2, is characterized in that: described measuring instrument is for detection of voltage signal, current signal, power signal, frequency signal and power factor.
4. PLC experimental provision according to claim 1, is characterized in that: the side that described first area is observer, the offside that described second area is first area.
5. PLC experimental provision according to claim 1, is characterized in that: described power module comprises AC power, D.C. regulated power supply and power switch.
6. PLC experimental provision according to claim 5, is characterized in that: described AC power is three-phase four-wire system power supply or three-phase five-wire mode power supply; Described D.C. regulated power supply can provide 24V and 5V power supply.
7. PLC experimental provision according to claim 1, is characterized in that: described power switch connects low-voltage circuit breaker.
8. PLC experimental provision according to claim 1, is characterized in that: the material of described casing is wooden.
9. PLC experimental provision according to claim 1, is characterized in that: described measuring instrument, touch-screen, frequency converter, stepper motor, stepper motor driver, PLC unit and PLC expansion module ground connection.
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| CN106601100A (en) * | 2017-03-02 | 2017-04-26 | 湖北工业大学 | Autonomous PLC teaching experiment equipment |
| CN107544425A (en) * | 2017-11-01 | 2018-01-05 | 深圳市新怡富数控设备有限公司 | A kind of servomotor detection means and detection method based on PLC |
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| CN202422528U (en) * | 2011-12-28 | 2012-09-05 | 河南中烟工业有限责任公司洛阳卷烟厂 | Movable multifunctional teaching PLC test bench |
| CN103824484A (en) * | 2013-09-29 | 2014-05-28 | 华中科技大学 | Electromechanics comprehensive experimental training table |
| CN203552557U (en) * | 2013-11-25 | 2014-04-16 | 淮安信息职业技术学院 | Electrical automation teaching experiment training comprehensive device |
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