CN104678872B - Signal for high-frequency induction heating apparatus converts isolation control circuit - Google Patents
Signal for high-frequency induction heating apparatus converts isolation control circuit Download PDFInfo
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- CN104678872B CN104678872B CN201310607407.6A CN201310607407A CN104678872B CN 104678872 B CN104678872 B CN 104678872B CN 201310607407 A CN201310607407 A CN 201310607407A CN 104678872 B CN104678872 B CN 104678872B
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- photoelectrical coupler
- power module
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- control
- diode
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/15—Plc structure of the system
- G05B2219/15078—Modules, construction of system
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a kind of signals for high-frequency induction heating apparatus to convert isolation control circuit, i.e. this circuit is equipped with corresponding resistance using five photoelectrical couplers and zener diode is separately connected the control port of PLC controller, control module and power module, wherein the first photoelectrical coupler is the operating condition of the third and fourth photoelectrical coupler, the photoelectrical coupler of third, the 4th and the 5th is changed isolation to working signal, second photoelectrical coupler is the signal intensity isolation with clipping, is worked for startup power supply module.This circuit connection PLC controller, control module and power module play control Signal Matching and transformation buffer action, avoid the disturbing factor of production scene, ensure that the reliable control and normal operation of high-frequency induction heating apparatus.
Description
Technical field
The present invention relates to a kind of signals for high-frequency induction heating apparatus to convert isolation control circuit.
Background technique
High-frequency induction heating apparatus is for the special installation of belt steel surface heat treatment, and control system is by control module control
Electric power source pair of module high-frequency induction heating apparatus processed provides working power, is required to pass through PLC controller pair according to process of thermal treatment
Control module implements control.Since high-frequency induction heating apparatus is in the bad working environments such as environment temperature height, control system is easy
Aging, and the opposite deterioration of power module faster becomes apparent from, and control system failure rate is caused to rise.Due to high-frequency induction heating apparatus
It is relatively high that overall expenses is transformed, general earlier replacement power module is controlled in improved upgrading power module and original PLC
The alarm signal port of device and control module allow power module working port to be easy to produce interference signal, therefore, frequently result in
Power module generates malfunction, when equipment fault or equipment being caused not to work, power supply mould when system does not have operating condition
Block but generates alarm error signal, causes equipment that cannot normally start operation.Therefore, it is necessary to increase the letter for having control function
Number variation isolation circuit, to enhance the anti-interference ability of control system.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of signals for high-frequency induction heating apparatus to convert isolation
There is band alarm signal to shield control function, rise for control circuit, this circuit connection PLC controller, control module and power module
Allow run signal and alarm signal isolated variable to act on to power module, avoids the disturbing factor of production scene, ensure that height
The reliable control of frequency induction heating apparatus and normal operation.
In order to solve the above technical problems, signal of the present invention for high-frequency induction heating apparatus converts isolation control circuit packet
PLC controller, control module and power module are included, the PLC controller, which is equipped with, allows power module signal alarm control port
With power module alarm signal port, the control module, which is equipped with, allows power module job control port and power module to alarm
Signal port, the power module, which is equipped with, allows job control port and three tunnel alarm signal ports, this circuit further includes first
Photoelectrical coupler, the second photoelectrical coupler, third photoelectrical coupler, the 4th photoelectrical coupler, the 5th photoelectrical coupler, the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and zener diode, the diode of first photoelectrical coupler
Anode connects external power supply through first resistor connection external power supply anode, the diode cathode of first photoelectrical coupler
Cathode, the transistor collector and emitter of first photoelectrical coupler are connected respectively the permission of the PLC controller
The anode and cathode of power module signal alarm control port, the transistor collector and emitter of second photoelectrical coupler
The permission job control port of the power module is connected, the diode anode of second photoelectrical coupler connects the pressure stabilizing
The anode of diode, the cathode of the zener diode connect the permission power module of the control module through the second resistance
The anode of job control port, the diode cathode of second photoelectrical coupler connect the permission power supply mould of the control module
The diode anode of the cathode of block job control port, the third photoelectrical coupler connects external power supply through the 3rd resistor
Anode, the diode cathode of the third photoelectrical coupler connect the first alarm signal port of the power module, and described
The transistor emitter of three photoelectrical couplers connects the negative of the permission power module signal alarm control port of the PLC controller
Pole, the transistor collector of the third photoelectrical coupler connect the power module alarm signal port of the PLC controller, institute
The diode anode of the 4th photoelectrical coupler is stated through the 4th resistance connection external power supply anode, the 4th photoelectrical coupler
Diode cathode connect the second alarm signal port of the power module, the triode emission of the 4th photoelectrical coupler
Pole connects the cathode of the permission power module signal alarm control port of the PLC controller, the 4th photoelectrical coupler
Transistor collector connects the power module alarm signal port of the PLC controller, two poles of the 5th photoelectrical coupler
Tube anode connects the electricity through the 5th resistance connection external power supply anode, the diode cathode of the 5th photoelectrical coupler
The third alarm signal port of source module, the transistor collector and emitter of the 5th photoelectrical coupler are connected respectively
The power module alarm signal port of the control module.
Signal transformation isolation control circuit due to the present invention for high-frequency induction heating apparatus uses above-mentioned technical side
Case, i.e. this circuit are equipped with corresponding resistance using five photoelectrical couplers and zener diode is separately connected PLC controller, control
The control port of module and power module, wherein the first photoelectrical coupler is the operating condition of the third and fourth photoelectrical coupler,
The photoelectrical coupler of third, the 4th and the 5th is changed isolation to working signal, and the second photoelectrical coupler is the signal with clipping
Variation isolation, works for startup power supply module.This circuit connection PLC controller, control module and power module play control
Signal Matching and transformation buffer action, avoid the disturbing factor of production scene, ensure that the reliable control of high-frequency induction heating apparatus
System and normal operation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments：
Fig. 1 is that signal of the present invention for high-frequency induction heating apparatus converts isolation control circuit schematic diagram.
Specific embodiment
As shown in Figure 1, signal transformation isolation control circuit of the present invention for high-frequency induction heating apparatus includes PLC control
Device 1, control module 2 and power module 3, the PLC controller 1, which is equipped with, allows power module signal alarm control port 11 and electricity
Source module alarm signal port 12, the control module 2, which is equipped with, allows power module job control port 21 and power module report
Alert signal port 22, the power module 3, which is equipped with, allows job control port 31 and three tunnel alarm signal ports 32, this circuit is also
Including the first photoelectrical coupler T1, the second photoelectrical coupler T2, third photoelectrical coupler T3, the 4th photoelectrical coupler T4, the 5th
Photoelectrical coupler T5, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, two pole the 5th resistance R5 and pressure stabilizing
The diode anode of pipe D, the first photoelectrical coupler T1 are through 4 anode of the first resistor R1 connection external power supply, and described the
The diode cathode of one photoelectrical coupler T1 connects 4 cathode of external power supply, the triode current collection of the first photoelectrical coupler T1
Pole and emitter be connected respectively the PLC controller 1 permission power module signal alarm control port 11 anode and
Cathode, what the transistor collector of the second photoelectrical coupler T2 connected the power module 3 with emitter allows work control
The diode anode of port 31 processed, the second photoelectrical coupler T2 connects the anode of the zener diode D, the pressure stabilizing two
The cathode of pole pipe D is connecting the permission power module job control port 21 of the control module 2 just through the second resistance R2
Pole, the diode cathode of the second photoelectrical coupler T2 connect the permission power module job control end of the control module 2
The diode anode of the cathode of mouth 21, the third photoelectrical coupler T3 is positive through the 3rd resistor R3 connection external power supply 4,
The diode cathode of the third photoelectrical coupler T3 connects the first alarm signal port 36 of the power module 3, and described
The transistor emitter of three photoelectrical coupler T3 connects the permission power module signal alarm control port of the PLC controller 1
The transistor collector of 11 cathode, the third photoelectrical coupler T3 connects the power module alarm signal of the PLC controller 1
Number port 12, the diode anode of the 4th photoelectrical coupler T4 is through 4 anode of the 4th resistance R4 connection external power supply, institute
The diode cathode for stating the 4th photoelectrical coupler T4 connects the second alarm signal port 35 of the power module 3, and the described 4th
The transistor emitter of photoelectrical coupler T4 connects the permission power module signal alarm control port 11 of the PLC controller 1
Cathode, the transistor collector of the 4th photoelectrical coupler T4 connects the power module alarm signal of the PLC controller 1
Port 12, the diode anode of the 5th photoelectrical coupler T5 are described through 4 anode of the 5th resistance R5 connection external power supply
The diode cathode of 5th photoelectrical coupler T5 connects the third alarm signal port 34 of the power module 3, the 5th light
The transistor collector and emitter of electric coupler T5 is connected respectively the power module alarm signal end of the control module 2
Mouth 22.
In this circuit, the first photoelectrical coupler is the work item of the third and fourth photoelectrical coupler power module abnormal signal
Part, the first photoelectrical coupler diode connection external power supply simultaneously be connected, at this time the triode on-off of the first photoelectrical coupler by
PLC controller control, when the triode ON of the first photoelectrical coupler, emitter potential zero.
The photoelectrical coupler of third, the 4th and the 5th is that power module abnormal signal changes isolated location, when power module three
When road alarm signal port is zero potential, the diode current flow of corresponding photoelectrical coupler, while three pole of the 5th photoelectrical coupler
The external positive potential of pipe collector, the abnormal signal of triode ON, power module are transmitted to control module；When third, the 4th
The external positive potential of photoelectrical coupler transistor collector, the triode emission of the first photoelectrical coupler extremely zero potential when, power supply
Module abnormal signal is transmitted to PLC controller, when three tunnel alarm signal port of power module is high potential, third, the 4th and
The triode of 5th photoelectrical coupler ends, and is no different regular signal output.
Second photoelectrical coupler is the signal intensity isolated location with clipping, is worked for startup power supply module, the second electricity
It hinders end and inputs high potential, when being higher than the reversed blanking voltage of zener diode, the diode current flow of the second photoelectrical coupler, the
The external high potential of the transistor collector of two photoelectrical couplers, triode ON, power module signal output out of service；When
Two resistance terminals are interfered by extraneous signal, and when which is lower than the reversed blanking voltage of zener diode, zener diode is cut
Only, signal isolation, no signal output, when second resistance end is zero potential, the triode cut-off of the second photoelectrical coupler, no letter
Number output, allow power module work.
This circuit, which is realized, controls signal between the PLC controller of high-frequency induction heating apparatus, control module and power module
Variation isolation, the interference that production scene interference signal controls high-frequency induction heating apparatus is avoided, in high-frequency induction heating
In apparatus control system aging maintenance process, facilitates the replacement operation of new old model control module and power module, ensure that height
The reliable control of frequency induction heating apparatus and normal operation.
Claims (1)
1. a kind of signal for high-frequency induction heating apparatus converts isolation control circuit, including PLC controller, control module and
Power module, the PLC controller, which is equipped with, allows power module signal alarm control port and power module alarm signal port,
The control module, which is equipped with, allows power module job control port and power module alarm signal port, the power module to set
Having allows job control port and three tunnel alarm signal ports, it is characterised in that：It further include the first photoelectrical coupler, the second photoelectricity
Coupler, third photoelectrical coupler, the 4th photoelectrical coupler, the 5th photoelectrical coupler, first resistor, second resistance, third electricity
Resistance, the 4th resistance, the 5th resistance and zener diode, the diode anode of first photoelectrical coupler is through the first resistor
External power supply anode is connected, the diode cathode of first photoelectrical coupler connects external power supply cathode, first photoelectricity
The transistor collector and emitter of coupler are connected respectively the permission power module signal alarm control of the PLC controller
The transistor collector of the anode and cathode of port processed, second photoelectrical coupler connects the power module with emitter
Allow job control port, the diode anode of second photoelectrical coupler connects the anode of the zener diode, described
The cathode of zener diode is connecting the permission power module job control port of the control module just through the second resistance
Pole, the diode cathode of second photoelectrical coupler connect the permission power module job control port of the control module
Cathode, the diode anode of the third photoelectrical coupler is through 3rd resistor connection external power supply anode, the third light
The diode cathode of electric coupler connects the first alarm signal port of the power module, and the three of the third photoelectrical coupler
Pole pipe emitter connects the cathode of the permission power module signal alarm control port of the PLC controller, the third photoelectricity
The transistor collector of coupler connects the power module alarm signal port of the PLC controller, the 4th photoelectric coupling
The diode anode of device connects through the 4th resistance connection external power supply anode, the diode cathode of the 4th photoelectrical coupler
The second alarm signal port of the power module is connect, the transistor emitter of the 4th photoelectrical coupler connects the PLC
The cathode of the permission power module signal alarm control port of controller, the transistor collector of the 4th photoelectrical coupler connect
The power module alarm signal port of the PLC controller is connect, the diode anode of the 5th photoelectrical coupler is through described
Five resistance connect external power supply anode, and the diode cathode of the 5th photoelectrical coupler connects the third report of the power module
Alert signal port, the transistor collector and emitter of the 5th photoelectrical coupler are connected respectively the control module
Power module alarm signal port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607407.6A CN104678872B (en) | 2013-11-27 | 2013-11-27 | Signal for high-frequency induction heating apparatus converts isolation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607407.6A CN104678872B (en) | 2013-11-27 | 2013-11-27 | Signal for high-frequency induction heating apparatus converts isolation control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN104678872A CN104678872A (en) | 2015-06-03 |
| CN104678872B true CN104678872B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310607407.6A Active CN104678872B (en) | 2013-11-27 | 2013-11-27 | Signal for high-frequency induction heating apparatus converts isolation control circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482838A (en) * | 2002-06-21 | 2004-03-17 | 松下电器产业株式会社 | Electric power control method for high-frequency induction heating and apparatus therefor |
| CN101692750A (en) * | 2005-11-25 | 2010-04-07 | 松下电器产业株式会社 | Power control unit for high frequency induction heating, and its control method |
| CN101754510A (en) * | 2006-06-02 | 2010-06-23 | 松下电器产业株式会社 | The power control unit that is used for high-frequency dielectric heating power |
| JP2011134614A (en) * | 2009-12-24 | 2011-07-07 | Neturen Co Ltd | Voltage detecting device and induction heating device |
| CN103337979A (en) * | 2013-04-15 | 2013-10-02 | 湖南大学 | Ultrahigh frequency MHz high power conversion device |
-
2013
- 2013-11-27 CN CN201310607407.6A patent/CN104678872B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482838A (en) * | 2002-06-21 | 2004-03-17 | 松下电器产业株式会社 | Electric power control method for high-frequency induction heating and apparatus therefor |
| CN101692750A (en) * | 2005-11-25 | 2010-04-07 | 松下电器产业株式会社 | Power control unit for high frequency induction heating, and its control method |
| CN101754510A (en) * | 2006-06-02 | 2010-06-23 | 松下电器产业株式会社 | The power control unit that is used for high-frequency dielectric heating power |
| JP2011134614A (en) * | 2009-12-24 | 2011-07-07 | Neturen Co Ltd | Voltage detecting device and induction heating device |
| CN103337979A (en) * | 2013-04-15 | 2013-10-02 | 湖南大学 | Ultrahigh frequency MHz high power conversion device |
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| Publication number | Publication date |
|---|---|
| CN104678872A (en) | 2015-06-03 |
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Address after: No. 3520 Tongji Road, Baoshan District, Shanghai, 201900 Patentee after: Baowu equipment Intelligent Technology Co., Ltd Address before: 201900, 335, Pu Pu Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOSTEEL INDUSTRY TECHNOLOGICAL SERVICE Co.,Ltd. |