CN209327833U - Intelligent type frequency-conversion device master control borad - Google Patents
Intelligent type frequency-conversion device master control borad Download PDFInfo
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- CN209327833U CN209327833U CN201920231718.XU CN201920231718U CN209327833U CN 209327833 U CN209327833 U CN 209327833U CN 201920231718 U CN201920231718 U CN 201920231718U CN 209327833 U CN209327833 U CN 209327833U
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- interface
- master control
- control borad
- conversion device
- device master
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Abstract
The utility model relates to frequency converter control panel technical field, specifically a kind of intelligent type frequency-conversion device master control borad.The utility model includes crystal oscillator, communication interface, photoelectrical coupler, I/V change-over switch, ground capacity, I/O Interface Terminal row, I/O expansion interface, output relay, bus driver, data-interface and the RJ45 shielding socket of MCU and its connection, the photoelectrical coupler is also connected with the I/O Interface Terminal row, the communication interface is used to connect external host computer, the data-interface is used to connect external driving plate and/or power supply, and the RJ45 shielding socket is used to connect external numeral method and key.The safety of the utility model is higher, overall dimensions are smaller, I/O mouthfuls it is expansible, and use bus type driving method, reduce peripheral circuit, improve response speed, greatly reduce electromagnetic interference.
Description
Technical field
The utility model relates to frequency converter control panel technical field, specifically a kind of intelligent type frequency-conversion device master control borad.
Background technique
Mostly using universal MCU as central processing unit, this chip is easy frequency converter master control borad currently on the market
It cracks, poor safety performance.And the overall dimensions of versatility MCU are larger, improve the production cost of frequency converter master control borad.Meanwhile
Existing frequency converter master control borad be mostly it is I/O mouthfuls fixed, be unfavorable for peripheral expansion.Control panel integrated level is low, and peripheral circuit is complicated,
It is not convenient for safeguarding, poor anti jamming capability.
Utility model content
Aiming at the defects existing in the prior art, the technical problem to be solved by the present invention is to provide one kind
Intelligent type frequency-conversion device master control borad.
The utility model technical solution used for the above purpose is: a kind of intelligent type frequency-conversion device master control borad, packet
Include crystal oscillator, communication interface, photoelectrical coupler, the I/V change-over switch, ground capacity, I/O interface end of MCU and its connection
Sub- row, I/O expansion interface, output relay, bus driver, data-interface and RJ45 shielding socket, the photoelectrical coupler
It is also connected with the I/O Interface Terminal row, the communication interface is used to connect external host computer, and the data-interface is for connecting
External driving plate and/or power supply, the RJ45 shielding socket are used to connect external numeral method and key.
The MCU uses dedicated custom chip R5F71258FAV.
The communication interface uses ADM487 chip.
The bus driver uses 74LS244.
The photoelectrical coupler uses LTV-355T.
The data-interface uses 40 needle data-interfaces.
The utility model have the following advantages that and the utility model has the advantages that
1, the utility model is using dedicated custom chip MCU_R5F71258FAV as central processing unit, this chip is except tool
The partial circuit of standby general chip, is also integrated with dedicated bus circuit, performance is more superior；Due to being custom chip, its peace
Quan Xinggeng high.
2, the overall dimensions of the utility model are smaller (long 123mm, wide 80mm), are equivalent to the 1/2---1/3 of market product,
More compact structure, production cost are lower.
3, the I/O mouth of the utility model is expansible, improves using flexible type, and user is facilitated to extend more peripheral hardwares.
4, the utility model uses bus type driving method, reduces peripheral circuit, improves response speed, substantially reduces
Electromagnetic interference.
Detailed description of the invention
Fig. 1 is the overall structure block diagram of the utility model；
Fig. 2 is the circuit diagram of the MCU of the utility model；
Fig. 3 is the circuit diagram of the communication interface of the utility model；
Fig. 4 is the circuit diagram of the I/V change-over switch of the utility model；
Fig. 5 is the circuit diagram of the I/O expansion interface of the utility model；
Fig. 6 is the circuit diagram of the output relay of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1-3, intelligent type frequency-conversion device master control borad, crystal oscillator, communication interface including MCU and its connection,
Photoelectrical coupler, I/V change-over switch, ground capacity, I/O Interface Terminal row, I/O expansion interface, output relay, bus driver
Device, data-interface and RJ45 shielding socket, the photoelectrical coupler are also connected with the I/O Interface Terminal row, the communication interface
For connecting external host computer, the data-interface is used to connect external driving plate and/or power supply, and the RJ45 shielding is inserted
Seat is for connecting external numeral method and key.The MCU uses dedicated custom chip R5F71258FAV.The communication
Interface uses ADM487 chip.The bus driver uses 74LS244.The photoelectrical coupler uses LTV-355T.It is described
Data-interface uses 40 needle data-interfaces.
In one embodiment of the utility model, MCU_R5F71258FAV is as central processing unit, by crystal oscillator
Operation clock is provided；Making corresponding output by I/O Interface Terminal row's circle collection status input signal, (input signal passes through light
Electric coupler LTV-355T is isolated)；I/V change-over switch is used for the conversion of current/voltage；Plank provide one group it is defeated
Relay is as multi-functional output out, and has reserved I/O expansion interface and improved user's diversification service performance；MCU operation
The real-time display and processing run signal and parameter setting of state pass through numeral method outside RJ45 shielding socket and key phase
Connection；Ground capacity CS222M is for anti-lightning strike anti-interference；For the ease of user networking, this plank provides communication interface chip
ADM487 supports MODBUX_RTU communication protocol；Bus driver 74LS244 passes through 40 needle data-interfaces and external drive plate chain
It meets driving IGBT and generates the alternating voltage of optional frequency for load use.
The signal that I/V change-over switch completes 0-20mA/0-5V inputs conversion, and the on-off of this change-over switch switches by MCU
Control.As shown in Figure 4.When input signal AI1 is 0-5V, PA0 exports low level, and switch transistor T 3 is ended, and 0-5V is through R86, R88
Partial pressure output is AD converted to the PC0 pin of CPU；When input signal AI1 is 0-20mA, PA0 exports high level, switch
Pipe T3 conducting, 0-20mA are converted into voltage through R85, then through R86, R88 partial pressure output is AD converted to the PC0 pin of CPU.
I/O expansion interface is bus extension output.Frequency converter IGBT driving output using bus mastering mode export to
IGBT driving board, as shown in Figure 5.When PB15 exports high level, 74LS244 stops output, and PA6, PA7, PC6-PC9 can be used as shape
State display function；When PB15 exports low level, the control of 74LS244 output driving.When nonserviceabling simultaneously, the high electricity of PB15 output
Flat, 74LS244 stops output.
The function of output relay on frequency converter master control borad can define.Such as alarm condition, signal light control, lock control, limit
Position control etc..The circuit form of output relay is as shown in Figure 6.
Claims (6)
1. a kind of intelligent type frequency-conversion device master control borad, which is characterized in that crystal oscillator, communication interface including MCU and its connection,
Photoelectrical coupler, I/V change-over switch, ground capacity, I/O Interface Terminal row, I/O expansion interface, output relay, bus driver
Device, data-interface and RJ45 shielding socket, the photoelectrical coupler are also connected with the I/O Interface Terminal row, the communication interface
For connecting external host computer, the data-interface is used to connect external driving plate and/or power supply, and the RJ45 shielding is inserted
Seat is for connecting external numeral method and key.
2. intelligent type frequency-conversion device master control borad according to claim 1, which is characterized in that the MCU uses dedicated custom core
Piece R5F71258FAV.
3. intelligent type frequency-conversion device master control borad according to claim 1, which is characterized in that the communication interface uses ADM487
Chip.
4. intelligent type frequency-conversion device master control borad according to claim 1, which is characterized in that the bus driver uses
74LS244。
5. intelligent type frequency-conversion device master control borad according to claim 1, which is characterized in that the photoelectrical coupler uses LTV-
355T。
6. intelligent type frequency-conversion device master control borad according to claim 1, which is characterized in that the data-interface uses 40 needle numbers
According to interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231718.XU CN209327833U (en) | 2019-02-25 | 2019-02-25 | Intelligent type frequency-conversion device master control borad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231718.XU CN209327833U (en) | 2019-02-25 | 2019-02-25 | Intelligent type frequency-conversion device master control borad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209327833U true CN209327833U (en) | 2019-08-30 |
Family
ID=67732364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920231718.XU Active CN209327833U (en) | 2019-02-25 | 2019-02-25 | Intelligent type frequency-conversion device master control borad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209327833U (en) |
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2019
- 2019-02-25 CN CN201920231718.XU patent/CN209327833U/en active Active
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