CN202586837U - Motor group self restart PLC control device - Google Patents
Motor group self restart PLC control device Download PDFInfo
- Publication number
- CN202586837U CN202586837U CN 201220155992 CN201220155992U CN202586837U CN 202586837 U CN202586837 U CN 202586837U CN 201220155992 CN201220155992 CN 201220155992 CN 201220155992 U CN201220155992 U CN 201220155992U CN 202586837 U CN202586837 U CN 202586837U
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- motor group
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- circuit
- plc
- control device
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- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a motor group self restart PLC control device comprising a control unit, a signal shaping and converting unit and a man-machine interaction interface device. The control unit comprises a programmable controller (PLC), an analog-to-digital conversion circuit (AD), a switch quantity input circuit (DI) and a switch quantity output circuit (DO). The programmable controller (PLC) is connected with the man-machine interaction interface device. The switch quantity input circuit (DI) and the switch quantity output circuit (DO) are respectively connected with a contactor of a motor group. The analog-to-digital conversion circuit (AD) is connected with one end of the signal shaping and converting unit, and the other end of the signal shaping and converting unit is connected with an electric bus of the motor group through a voltage transformer (PT) and a current transformer (CT). According to the motor group self restart PLC control device, reliable control can be carried out, structure is simple, operation is easy, maintenance is convenient, operation is reliable, accident records can be inquired, group control, automatic control and batch control are realized, and a reliable guarantee is provided for motor operation.
Description
Technical field
The utility model relates to Motor Control Field, in particular to a kind of by Programmable Logic Controller PLC as key control unit, at the energising bus generation voltage flashover fault of motor group time control motor group in batches from the control device of restarting.
Background technology
Along with the modern factories scale enlarges day by day, motor must increase in the number of applications of factory, for the huge motor group of quantity, should require to improve more control reliably.Simultaneously, owing to factor affecting such as thunderbolt, weather, external environment conditions, electrical network flashing decompression phenomenon happens occasionally, and has caused loss in various degree to factory in many industrial occasions.Therefore; People carry out comparatively deep research to the control device of motor; As one Chinese patent application number be 201020281491.9 a kind of motor rebooting device is disclosed, long-range motor is restarted control device and system; The motor rebooting device comprises voltage detection module, radio receiving transmitting module, microprocessor, relay module and restarting control module; Voltage detection module one end links to each other with the microprocessor of inside, and the power supply circuits of transporting to motor in the control cubicle of the other end and outside link to each other, and microprocessor also links to each other with radio receiving transmitting module, relay module respectively; Restarting control module one end links to each other with the relay module of inside, and the other end links to each other with the motor contactor of outside; Long-range motor is restarted control device and is comprised radio receiving transmitting module, microprocessor, display and supervisory keyboard; Microprocessor links to each other with radio receiving transmitting module, display and supervisory keyboard respectively, and system comprises that motor rebooting device and long-range motor restart control device.But these control device structures are comparatively complicated, cost is high, maintenance difficulty etc.
Summary of the invention
The purpose of the utility model is the deficiency to prior art; Provide a kind of motor group simple in structure, easy to operate, easy to maintenance, reliable, control stabilization to restart the PLC control device certainly; Rely on the stable control performance of Programmable Logic Controller PLC, motor group restarts problem automatically when solving the energising bus generation flashover decompression of motor group.
To achieve these goals; The utility model has adopted following technical scheme: a kind of motor group is from restarting the PLC control device; Be and the energising bus of motor group, the device of contactor connection, it is characterized in that: this device comprises control unit, signal shaping converter unit and human-computer interaction interface device; Described control unit comprises Programmable Logic Controller PLC, analog to digital conversion circuit AD, switching value input circuit DI and switching value output circuit DO; Programmable Logic Controller PLC is connected with the human-computer interaction interface device; Switching value input circuit DI, switching value output circuit DO are connected with the contactor of motor group respectively; Analog to digital conversion circuit AD is connected with an end of signal shaping change unit, and the signal shaping converter unit other end is connected with the energising bus of motor group through voltage transformer pt, current transformer CT.
Described signal shaping converter unit is the halfwave rectifier amplifying circuit that is made up of single amplifier.
Described analog to digital conversion circuit AD is analog signal-digital signal change-over circuit module.
Described human-computer interaction interface device is microcomputer or panel computer.The user can be provided with every motor reboot time easily through the human-computer interaction interface device, realizes that motor group restarts in batches.
The utility model is a key control unit with Programmable Logic Controller PLC; The running status of voltage, current signal and busbar flashover front motor on the energising bus of collection motor group; Through Programmable Logic Controller PLC calculation process; Judge whether bus the flashover decompression takes place, motor group is carried out in batches from restarting control; And the time of restarting certainly and the motor that have write down busbar flashover decompression time, every motor supply the user to check at any time from restarting successfully report.
The operation principle of the utility model: the signal shaping converter unit with the analog signal on the bus via voltage, current transformer isolate the back, then after the operational amplifier rectification is amplified, become the measurable signal of analog to digital conversion circuit AD; Analog to digital conversion circuit AD flows to Programmable Logic Controller PLC after analog signal conversion is become digital signal, and Programmable Logic Controller PLC also receives the data of carrying the busbar voltage flashover front motor running status of coming via switching value input circuit DI simultaneously; Programmable Logic Controller PLC carries out calculation process with above data, draws judged result, and then restarts through switching value output circuit DO control motor group in batches, sends data to the human-computer interaction interface device simultaneously, to preserve data record.
The bus data of the utility model collection comprise busbar voltage, bus total current; The end that becomes near step-down that is captured in of bus signal inserts the signal shaping converter unit by voltage transformer pt, current transformer CT; Obtain direct current signal; Again direct current signal is flowed to analog to digital conversion circuit AD, through being converted to digital signal; The switching value input signal is by the auxiliary contact insertion switch input circuit DI of starter motor contactor KM.Programmable Logic Controller PLC controls restarting certainly of motor through these busbar voltages of calculation process, bus current, motor operation signal again.
Compared with prior art, the beneficial effect that possesses of the utility model:
With the core cell of Programmable Logic Controller PLC as the motor rebooting device, can control reliably, simple in structure; Processing ease, easy to maintenance, reliable; Can inquire about accident record, motor is restarted realization group control, control automatically, control in batches, for the motor operation provides reliable assurance.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the utility model signal shaping converter unit circuit diagram.
The explanation of signal shaping converter unit: the signal shaping converter unit changes into current signal, voltage signal with outside CT, PT signal through inner instrument transformer; Get into amplifier again; Wherein regulate R6 and can regulate multiplication factor; Making of being halfwave rectifier of two diodes, the effect of capacitor C 2 is filtering, obtains direct current signal.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment 1:
Shown in accompanying drawing: motor group is and the energising bus of motor group, the device of contactor connection that this device comprises control unit, signal shaping converter unit and panel computer from restarting the PLC control device; Described control unit comprises Programmable Logic Controller PLC, analog to digital conversion circuit AD, switching value input circuit DI and switching value output circuit DO; Programmable Logic Controller PLC is connected with panel computer; Switching value input circuit DI, switching value output circuit DO are connected with the contactor of motor group respectively; Analog to digital conversion circuit AD is connected with an end of signal shaping change unit, and the signal shaping converter unit other end is connected with the energising bus of motor group through voltage transformer pt, current transformer CT; The signal shaping converter unit is the halfwave rectifier amplifying circuit that is made up of single amplifier, and analog to digital conversion circuit AD is analog signal-digital signal change-over circuit module.The PLC control device of the utility model is simple in structure, processing ease, easy to maintenance, reliable, can inquire about accident record at any time.
Embodiment 2:
Shown in accompanying drawing: motor group is and the energising bus of motor group, the device of contactor connection that this device comprises control unit, signal shaping converter unit and microcomputer from restarting the PLC control device; Described control unit comprises Programmable Logic Controller PLC, analog to digital conversion circuit AD, switching value input circuit DI and switching value output circuit DO; Programmable Logic Controller PLC is connected with microcomputer; Switching value input circuit DI, switching value output circuit DO are connected with the contactor of motor group respectively; Analog to digital conversion circuit AD is connected with an end of signal shaping change unit, and the signal shaping converter unit other end is connected with the energising bus of motor group through voltage transformer pt, current transformer CT; The signal shaping converter unit is the halfwave rectifier amplifying circuit that is made up of single amplifier, and analog to digital conversion circuit AD is analog signal-digital signal change-over circuit module.The PLC control device of the utility model is simple in structure, processing ease, easy to maintenance, reliable, can inquire about accident record at any time.
Claims (4)
1. a motor group is and the energising bus of motor group, the device of contactor connection that it is characterized in that: this device comprises control unit, signal shaping converter unit and human-computer interaction interface device from restarting the PLC control device; Described control unit comprises Programmable Logic Controller PLC, analog to digital conversion circuit AD, switching value input circuit DI and switching value output circuit DO; Programmable Logic Controller PLC is connected with the human-computer interaction interface device; Switching value input circuit DI, switching value output circuit DO are connected with the contactor of motor group respectively; Analog to digital conversion circuit AD is connected with an end of signal shaping change unit, and the signal shaping converter unit other end is connected with the energising bus of motor group through voltage transformer pt, current transformer CT.
2. motor group according to claim 1 is from restarting the PLC control device, and it is characterized in that: described signal shaping converter unit is the halfwave rectifier amplifying circuit that is made up of single amplifier.
3. motor group according to claim 1 is from restarting the PLC control device, and it is characterized in that: described analog to digital conversion circuit AD is analog signal-digital signal change-over circuit module.
4. restart the PLC control device certainly according to the arbitrary described motor group of claim 1-3, it is characterized in that: described human-computer interaction interface device is microcomputer or panel computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155992 CN202586837U (en) | 2012-04-13 | 2012-04-13 | Motor group self restart PLC control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155992 CN202586837U (en) | 2012-04-13 | 2012-04-13 | Motor group self restart PLC control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586837U true CN202586837U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220155992 Expired - Fee Related CN202586837U (en) | 2012-04-13 | 2012-04-13 | Motor group self restart PLC control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137890A (en) * | 2021-12-30 | 2022-03-04 | 北京华能新锐控制技术有限公司 | Device, remote IO module and method for realizing remote restart of offshore wind power equipment |
-
2012
- 2012-04-13 CN CN 201220155992 patent/CN202586837U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137890A (en) * | 2021-12-30 | 2022-03-04 | 北京华能新锐控制技术有限公司 | Device, remote IO module and method for realizing remote restart of offshore wind power equipment |
| CN114137890B (en) * | 2021-12-30 | 2023-08-08 | 北京华能新锐控制技术有限公司 | Device for realizing remote restarting of offshore wind power equipment, remote IO module and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130413 |