CN203166750U - Control board circuit for coal mine explosion-proof frequency converter - Google Patents
Control board circuit for coal mine explosion-proof frequency converter Download PDFInfo
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- CN203166750U CN203166750U CN 201320041726 CN201320041726U CN203166750U CN 203166750 U CN203166750 U CN 203166750U CN 201320041726 CN201320041726 CN 201320041726 CN 201320041726 U CN201320041726 U CN 201320041726U CN 203166750 U CN203166750 U CN 203166750U
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Abstract
The utility model discloses a control board circuit for a coal mine explosion-proof frequency converter. The control board circuit comprises a 485 communication module, a two-path analog-quantity input module, an eight-path external-terminal control module, three-path current detection module, a voltage detection module, an eight-path fault detection module, an intelligent display screen, an eight-path temperature detection module, a two-path analog-quantity output module, a PWM wave output module, a CPU control chip and a CAN power-balance bus module, wherein the CPU control chip is electrically connected with a frequency converter circuit, and the CAN power-balance bus module is electrically connected with the CPU control chip and is connected with a plurality of sets of parallel driven frequency converters. The plurality of sets of parallel driven frequency converters are connected with active frequency converters by a CAN bus. Eight-path external-terminal control can realize speed giving and remote operation control and multi-machine parallel connection synchronous operation. PWM wave output drives a power unit. The control board circuit can intelligently display. Through a manner of parallel connection of the CAN power-balance bus module and the plurality of sets of parallel driven frequency converters, synchronous control of the plurality of sets is realized.
Description
Technical field
The utility model relates to a kind of control board, relates in particular to a kind of colliery explosion-proof frequency converter control board circuit.
Background technology
Frequency converter is as the core of frequency conversion speed-adjusting system; more and more used at industrial control field; its component controls plate CPU is the core of frequency conversion drive output; it connects user interface; the driving power plate; for the user provides various control and mode of operation, be output waveform of transformer, overcurrent-overvoltage overheat protector and detection etc.In the practical application, variable-frequency control technique is mainly used in the high-voltage motor governing system, with its excellent speed governing with play a braking ability, high efficiency, High Power Factor and other many advantages such as the scope of application and be acknowledged as the most rising mode of speed regulation widely.Under the bigger situation of blower fan, pump class even load working conditions change, adopt ac speed control technology, energy-saving effect is obvious, can reach the purpose of energy-saving and emission-reduction.
At present, Single Chip Microcomputer (SCM) system or other non-bus-structured control circuits are adopted in the master board of mesohigh frequency converter more, and its shortcoming is that arithmetic speed is slower, and extended capability is poor, and function singleness can not satisfy complicated day by day mesohigh variable frequency control demand.
Summary of the invention
Deficiency at the prior art existence, technical problem to be solved in the utility model is, a kind of reliability height is provided, processing speed is fast, various functions are numerous, and extended capability is strong, can programme repeatedly, the frequency converter voltage grade of controlling higher, can realize many group frequency converter Synchronization Control, the colliery of improving control efficiency and precise control is with explosion-proof frequency converter control board circuit
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of colliery explosion-proof frequency converter control board circuit, comprise 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module and the CPU control chip that is electrically connected with converter circuit, described 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module all is electrically connected with the CPU control chip, also comprise CAN power-balance bus module, described CAN power-balance bus module is electrically connected with the CPU control chip, be connected with many groups driven frequency converter in parallel at CAN power-balance bus module, the driven frequency converter of described many groups links to each other with the active frequency converter by the CAN bus.
Above-mentioned colliery explosion-proof frequency converter control board circuit, described converter circuit is electrically connected with the PID controller circuitry.
Above-mentioned colliery explosion-proof frequency converter control board circuit, described PID controller circuitry is made up of preset value input module, ratio unit, first integral unit, second integral unit and differentiation element, described second integral unit connects the converter circuit that has three phase electric machine, three phase electric machine connects analog signals ruleization module by process variable, transducer, and is connected with preset value input module signal by signal feedback.
Above-mentioned colliery explosion-proof frequency converter control board circuit, described preset value input module connects the feedback upper limit, the super upper limit of numeral, the numeral output of the feedback upper limit and feedback lower limit, the super lower limit of numeral, the output of feedback lower limit numeral respectively by the transmission signal, and the output of described feedback upper limit numeral and the output of feedback lower limit numeral connect the relay circuit module respectively.
The utility model colliery with the advantage of explosion-proof frequency converter control board circuit is: the utility model frequency converter master board circuit, and adopt digital signal processor as the processing core, and adopt bus structures, performance is better than the system that the conventional one-piece machine is core far away.Have the arithmetic speed, the strong functions that are exceedingly fast, high extensibility, flexible open external interface, relative simple circuit configuration, the characteristics that failure rate is low.It is the control board that a kind of adaptation is used at present frequency-changing control system that control rate and function complexity are had relatively high expectations.Be highly suitable at present mesohigh frequency-changing control system that control rate and function complexity are had relatively high expectations.Contrast conventional one-piece machine system failure rate reduces by 40%, and can realize the real-time monitoring to power device, and can effectively reduce frequency converter to the humorous wave interference of electrical network.Use the PID controller of band bound switch control, control system need not to adopt the PLC module just can carry out bound warning output again, has simplified system configuration, has reduced cost.485 communications: host computer is controlled all operations and the data read of this machine by 485 communication interfaces.8 road outside terminals control: the given and long-range operation control of the speed that can realize; Power-balance: realize multi-machine parallel connection synchronous operation; PWM ripple output: driving power unit; Intelligent display: finish all devices parameter and set and operation control; Voltage detecting: the 2 tunnel exchange detection, and 1 road direct current detects.Adopt the CAN power-balance bus module mode in parallel with the driven frequency converter of many groups, realized many groups Synchronization Control.
Description of drawings
Fig. 1 is circuit structure block diagram of the present utility model;
Fig. 2 is the circuit structure block diagram that the utility model links to each other with the PID controller;
Fig. 3 is CAN Bus power-balance structured flowchart.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described in further details;
As Fig. 1,2, shown in 3, a kind of colliery explosion-proof frequency converter control board circuit, comprise 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module and the CPU control chip that is electrically connected with converter circuit, described 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module all is electrically connected with the CPU control chip, also comprise CAN power-balance bus module, described CAN power-balance bus module is electrically connected with the CPU control chip, be connected with many groups driven frequency converter in parallel at CAN power-balance bus module, the driven frequency converter of described many groups links to each other with the active frequency converter by the CAN bus.
The CPU control chip comprises that digital circuit input pin, analog signal output pin, display screen button pin, display screen connect pin, bus pin and 485 communication pins and form.
Converter circuit is electrically connected with the PID controller circuitry.The PID controller circuitry is made up of preset value input module, ratio unit, first integral unit, second integral unit and differentiation element, described second integral unit connects the converter circuit that has three phase electric machine, three phase electric machine connects analog signals ruleization module by process variable, transducer, and is connected with preset value input module signal by signal feedback.The preset value input module connects the feedback upper limit, the super upper limit of numeral, the numeral output of the feedback upper limit and feedback lower limit, the super lower limit of numeral, the output of feedback lower limit numeral respectively by the transmission signal, and the output of described feedback upper limit numeral and the output of feedback lower limit numeral connect the relay circuit module respectively.
The CAN bus communication drags the automated power balanced design for multimachine.When Liang Tai and two drag same load with the upconverter drive motors, all frequency converters are linked together to realize the automated power balance of multiple electric motors by the CAN bus communication.Initiatively frequency converter is responsible for giving each driven frequency converter with the state transfer of self, and each driven frequency converter calculates the output order of self according to state and the oneself state of active frequency converter.
Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement all should belong to protection range of the present utility model.
Claims (4)
1. a colliery is with explosion-proof frequency converter control board circuit, comprise 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module and the CPU control chip that is electrically connected with converter circuit, described 485 communication modules, 2 tunnel analog quantity input modules, 8 road outside terminal control modules, 3 road current detection modules, voltage detection module, 8 tunnel fault detection module, the intelligent display screen, 8 tunnel temperature detecting module, 2 road analog output modules, PWM ripple output module all is electrically connected with the CPU control chip, it is characterized in that: also comprise CAN power-balance bus module, described CAN power-balance bus module is electrically connected with the CPU control chip, be connected with many groups driven frequency converter in parallel at CAN power-balance bus module, the driven frequency converter of described many groups links to each other with the active frequency converter by the CAN bus.
2. colliery according to claim 1 is with explosion-proof frequency converter control board circuit, and it is characterized in that: described converter circuit is electrically connected with the PID controller circuitry.
3. colliery according to claim 2 is with explosion-proof frequency converter control board circuit, it is characterized in that: described PID controller circuitry is made up of preset value input module, ratio unit, first integral unit, second integral unit and differentiation element, described second integral unit connects the converter circuit that has three phase electric machine, three phase electric machine connects analog signals ruleization module by process variable, transducer, and is connected with preset value input module signal by signal feedback.
4. colliery according to claim 3 is with explosion-proof frequency converter control board circuit, it is characterized in that: described preset value input module connects the feedback upper limit, the super upper limit of numeral, the numeral output of the feedback upper limit and feedback lower limit, the super lower limit of numeral, the output of feedback lower limit numeral respectively by the transmission signal, and the output of described feedback upper limit numeral and the output of feedback lower limit numeral connect the relay circuit module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041726 CN203166750U (en) | 2013-01-26 | 2013-01-26 | Control board circuit for coal mine explosion-proof frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041726 CN203166750U (en) | 2013-01-26 | 2013-01-26 | Control board circuit for coal mine explosion-proof frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166750U true CN203166750U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041726 Expired - Fee Related CN203166750U (en) | 2013-01-26 | 2013-01-26 | Control board circuit for coal mine explosion-proof frequency converter |
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| CN (1) | CN203166750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107687A (en) * | 2013-01-26 | 2013-05-15 | 青岛威控电气有限公司 | Anti-explosion converter control panel circuit for coal mine |
-
2013
- 2013-01-26 CN CN 201320041726 patent/CN203166750U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107687A (en) * | 2013-01-26 | 2013-05-15 | 青岛威控电气有限公司 | Anti-explosion converter control panel circuit for coal mine |
| CN103107687B (en) * | 2013-01-26 | 2016-05-18 | 青岛威控电气有限公司 | Coal mine explosion-proof frequency converter control panel circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20150126 |
|
| EXPY | Termination of patent right or utility model |