CN214125187U - Forward and reverse rotation motor control circuit - Google Patents
Forward and reverse rotation motor control circuit Download PDFInfo
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- CN214125187U CN214125187U CN202023173148.5U CN202023173148U CN214125187U CN 214125187 U CN214125187 U CN 214125187U CN 202023173148 U CN202023173148 U CN 202023173148U CN 214125187 U CN214125187 U CN 214125187U
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Abstract
The utility model relates to a just reversing motor control circuit, the field that relates to electromechanical device control, the electricity is connected with control module, three-phase alternating current and motor, including the mechanical switch module that is arranged in arbitrary two alternate commutation in the three-phase alternating current and the electronic switch module that is used for controlling break-make between three-phase alternating current and the motor, the input of mechanical switch module is connected with the power end electricity of three-phase alternating current, the output of mechanical switch module is connected with the input electricity of electronic switch module, the output and the motor electricity of electronic switch module are connected. The utility model discloses a mechanical relay and thyristor use the control motor just reversal in a mixed way for control is more stable.
Description
Technical Field
The application relates to the field of electromechanical device control, in particular to a control circuit of a forward and reverse rotating motor.
Background
The motor rotates clockwise and counterclockwise, which means that the motor rotates clockwise and counterclockwise. The clockwise rotation of the motor is the forward rotation of the motor, and the anticlockwise rotation of the motor is the reverse rotation of the motor. According to the forward and reverse rotation control circuit diagram and principle analysis thereof, the purpose of reverse rotation can be achieved by only connecting any two opposite connecting wires in the three-phase power supply incoming wires of the motor to realize forward and reverse rotation of the motor. The positive and negative rotation of the motor is widely used in the following occasions: traveling crane, electric planer for carpenter, bench drill, silk cutting machine, spin dryer, lathe, etc.
At present, the positive and negative rotation of most motors are controlled by a thyristor or a relay, and the circuit controlled by the thyristor cannot be completely disconnected in time, so that short circuit is easy to occur.
Disclosure of Invention
In order to make the motor just reverse control more stable, this application provides a just reverse motor control circuit.
The application provides a positive and negative motor control circuit adopts following technical scheme:
the utility model provides a just reversing motor control circuit, electricity is connected with control module, three-phase alternating current and motor, including be used for in the mechanical switch module of arbitrary two looks commutation in the three-phase alternating current with be used for controlling the electronic switch module of break-make between three-phase alternating current and the motor, the input of mechanical switch module with the power end electricity of three-phase alternating current is connected, the output of mechanical switch module with the input electricity of electronic switch module is connected, the output of electronic switch module with the motor electricity is connected.
By adopting the technical scheme, the mechanical switch module plays a role in phase change, and the electronic switch module plays a role in controlling on-off between three-phase alternating current and the motor; the motor is controlled to rotate forwards and backwards by adopting the mixed use of the mechanical switch and the electronic switch, so that the condition that the electric arc is generated by purely depending on the control of the mechanical switch and the short circuit is generated by purely depending on the control of the electronic switch and the condition that the short circuit cannot be timely disconnected is avoided, and the stability of the circuit is improved.
Preferably, the three-phase alternating current is a U-phase, a V-phase and a W-phase, both the V-phase and the W-phase are electrically connected to the mechanical switch module, the mechanical switch module is connected in series with the electronic switch module, the mechanical switch module includes a mechanical switch driving unit and a mechanical switch unit, an input end of the mechanical switch driving unit is controlled and connected to an output end of the control module, an output end of the mechanical switch driving unit is electrically connected to an input end of the mechanical switch unit, and the mechanical switch driving unit is used for driving the mechanical switch unit;
the electronic switch module comprises an electronic switch driving unit and an electronic switch unit, the output ends of the U-phase alternating current, the V-phase alternating current and the W-phase alternating current are all connected in series with the electronic switch module, the input end of the electronic switch driving unit is controlled to be connected with the output end of the control module, the output end of the electronic switch driving unit is electrically connected with the input end of the electronic switch unit, and the electronic switch driving unit is used for driving the electronic switch unit.
By adopting the technical scheme, the mechanical switch unit plays a role in phase change, and the mechanical switch driving unit plays a role in driving the mechanical switch unit; the electronic switch unit plays a role in controlling on-off between the three-phase alternating current and the motor, and the electronic switch driving unit plays a role in the electronic mechanical switch unit.
Preferably, the mechanical switch driving unit includes a first electrical isolation unit, an input end of the first electrical isolation unit is electrically connected to the mechanical switch driving unit, and an output end of the first electrical isolation unit is electrically connected to an input end of the mechanical switch unit.
By adopting the technical scheme, the first electrical isolation unit enables the isolated two parts of circuits to be electrically and directly connected, so that interference caused by electrical connection is avoided.
Preferably, the electronic switch driving unit includes a second electrical isolation unit, an input end of the second electrical isolation unit is electrically connected to the electronic switch driving unit, and an output end of the second electrical isolation unit is electrically connected to an input end of the electronic switch circuit.
By adopting the technical scheme, the second electrical isolation unit enables the isolated two parts of circuits to be electrically and directly connected, so that interference caused by electrical connection is avoided.
Preferably, the output end of the mechanical switch module and the two ends of the input end of the mechanical switch unit are connected in series with an indicator lamp module, the indicator lamp module comprises an LED lamp D27 and a resistor R77, the positive pole of the LED lamp D27 is connected to the positive pole of the three-phase alternating current, the positive pole of the LED lamp D27 is electrically connected to the first electrical isolation unit, the negative pole of the LED lamp D27 is electrically connected to the input end of the resistor R77, and the output end of the resistor R77 is grounded.
Through adopting above-mentioned technical scheme, LED lamp D27 lights when the circuit normal operating, does not light when the circuit breaks down, plays the effect of suggestion.
Preferably, an electronic switch centralized control module is arranged at two ends of the input end of the electronic switch module and the output end of the control module, the electronic switch centralized control module comprises a triode Q2, the base of the triode Q2 is electrically connected with the output end of the control module, the emitter of the triode Q2 is electrically connected with the other output end of the control module, and the collector of the triode Q2 is connected with the ground terminal.
By adopting the technical scheme, the triode Q2 carries out different voltage conversion.
Preferably, the input ends of the three-phase alternating current of the U-phase, the V-phase and the W-phase are all electrically connected with a protection unit, and the output end of the protection unit is electrically connected with the input end of the mechanical switch unit.
By adopting the technical scheme, the protection unit can be a fuse, and the fuse can be fused to cut off the current when the current abnormally rises to a certain height and heat, so that the effect of protecting the safe operation of a circuit is achieved.
Preferably, the alarm unit is connected in parallel at the two ends of the protection unit, the alarm unit includes LED lamp D30, resistance R105, resistance R106 and resistance R107, the positive pole of LED lamp D30 is connected with the input electricity that the three-phase exchanges, the negative pole of LED lamp D30 with the input electricity of resistance R105 is connected, the output of resistance R105 with the input electricity of resistance R106 is connected, the output of resistance R106 with the input electricity of resistance R107 is connected, the output of resistance R107 inserts the output of protection unit.
By adopting the technical scheme, after the fuse is fused, the line where the fuse unit is located is disconnected, the current flows to the line where the alarm unit is located, and the LED lamp D30 lights up to prompt the fault of the line of the staff.
Preferably, the indicator light module is connected in parallel with a follow current unit.
By adopting the technical scheme, the follow current unit is used for follow current of the circuit.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the mechanical switch module plays a role in phase change, and the electronic switch plays a role in controlling on-off between three-phase alternating current and the motor; the motor is controlled to rotate forwards and backwards by adopting the mixed use of the mechanical switch and the electronic switch, so that the condition that the electric arc is generated only by the control of the mechanical switch and the short circuit is generated because the short circuit can not be timely disconnected only by the control of the electronic switch is avoided, and the stability of the circuit is improved;
2. the protection unit can be a fuse, and the fuse can be fused to cut off the current when the current abnormally rises to a certain height and heat, so that the effect of protecting the safe operation of the circuit is achieved.
Drawings
Fig. 1 is an overall circuit diagram of the embodiment.
FIG. 2 is a terminal pin diagram of the control module in an embodiment.
Fig. 3 is a partial circuit diagram of a protection unit and an alarm unit in an embodiment.
Fig. 4 is a partial circuit diagram of a mechanical switch module in an embodiment.
Fig. 5 is a partial circuit diagram of an electronic switch module and an electronic switch centralized control module in an embodiment.
Reference numerals: 1. a control module; 2. a protection unit; 3. an alarm unit; 4. a mechanical switch module; 41. a mechanical switch drive unit; 42. a mechanical switch unit; 43. a first electrical isolation unit; 5. an indicator light module; 6. a follow current unit; 7. an electronic switch module; 71. an electronic switch driving unit; 72. an electronic switch unit; 73. a second electrical isolation unit; 8. and an electronic switch centralized control module.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a control circuit of a forward and reverse rotating motor.
A control circuit of a forward and reverse rotating motor refers to fig. 1 and 2 and is connected with a control module 1, three-phase alternating current and a motor, and the control module 1 can be a single chip microcomputer.
Referring to fig. 3, in the present embodiment, the input terminals of U, V, W phase alternating currents of three-phase alternating currents are electrically connected to the protection unit 2 and the alarm unit 3, and one phase is taken as an example for explanation.
The protection unit 2 is connected in series with an input end of a phase alternating current, and the protection unit 2 may adopt a fuse F4 or an air switch, and the fuse F4 is adopted in the embodiment. The fuse F4 will fuse itself to cut off the current when the current rises to a certain height and heat, thus playing the role of protecting the safe operation of the circuit.
The alarm unit 3 is connected in parallel at two ends of the protection unit 2, and the alarm unit 3 comprises an LED lamp D30, a resistor R105, a resistor R106 and a resistor R107 which are connected in series in sequence. When the circuit normally operates, the alarm unit 3 does not work; when the fuse F4 is fused, the alarm unit 3 simultaneously lights the LED lamp D30 to remind a line fault, so that a worker can replace the fuse F4 in time.
Referring to fig. 4, the present application includes a mechanical switch module 4 and an electronic switch module 7, at least one mechanical switch module 4 is respectively connected in series to the output ends of the V-phase and W-phase protection units 2, and the mechanical switch module 4 of the V-phase is interlocked with the mechanical switch module 4 of the W-phase. The mechanical switch module 4 comprises a mechanical switch drive unit 41, a mechanical switch unit 42 and a first electrical isolation unit 43.
The mechanical switch unit 42 can adopt a relay, the relay KM7 and the relay KM8 are both provided with a first single-pole double-throw switch and a second single-pole double-throw switch, the relay KM7 is connected with the relay KM8 in series, and the mechanical switch unit 42 is used for controlling the turn-off of a circuit. The mechanical switch driving unit 41 comprises a resistor R20, a capacitor C25 and a resistor R76, the resistor R20 is connected in series with the output end of the single chip microcomputer, the capacitor C25 is connected in parallel with the output end and the ground end of the resistor R20, the resistor R76 is connected in parallel with the output end and the ground end of the resistor R20, the output end of the mechanical switch driving unit 41 is electrically connected with the first electrical isolation unit 43, and the mechanical switch driving unit 41 is used for driving the mechanical switch unit 42.
Referring to fig. 5, the indicator lamp module 5 is connected in series between the output end of the mechanical switch module 4 and the two ends of the input end of the mechanical switch unit 42, the indicator lamp module 5 includes an LED lamp D27 and a resistor R77, the LED lamp D27 and the resistor R77 are connected in series, the input end of the LED lamp D27 is electrically connected to one pin of the first electrical isolation unit 43, the output end of the LED lamp D27 is connected to the ground, and the LED lamp D27 plays a role in prompting whether the circuit normally operates. The two ends of the indicator light module 5 are connected in parallel with the follow current unit 6, the follow current unit 6 can be a follow current diode D29, and the follow current diode D29 plays a role of follow current.
The first electrical isolation unit 43 may be an optocoupler relay Y212, and pins 1 and 2 of the optocoupler relay Y212 are connected in parallel at two ends of the resistor R76; no. 3 and No. 4 pin of opto-coupler relay Y212, No. 3 pin inserts the second power, and No. 4 pin and relay KM7 are established ties. The optocoupler relay Y212 enables the isolated two parts of circuits to be electrically and directly connected, and interference caused by the electrical connection is avoided.
The output ends of the U-phase, the V-phase and the W-phase are respectively connected in series with at least one electronic switch module 7, and the electronic switch module 7 includes an electronic switch driving unit 71, an electronic switch unit 72 and a second electrical isolation unit 73.
The electronic switch driving unit 71 comprises a resistor R71, a resistor R31 and a capacitor C26, the resistor R71 is connected in series with the output end of the single chip microcomputer, the resistor R31 is connected in parallel with the output end and the grounding end of the resistor R71, the capacitor C26 is connected in parallel with the output end and the grounding end of the resistor R71, the output end of the electronic switch driving unit 71 is electrically connected with the electronic isolation unit, and the electronic switch driving unit 71 is used for driving the electronic switch unit 72.
The electronic isolation unit includes opto-coupler relay U18 and opto-coupler relay U19, opto-coupler relay U18 and opto-coupler relay U19 all can be opto-coupler relay MOC3063, No. 1 pin of opto-coupler relay U19 establishes ties with electronic switch drive unit 71's output, No. 2 pins of opto-coupler U19 relay establish ties with No. 1 pin of opto-coupler relay U18, No. 2 pin ground connection of opto-coupler relay U18, No. 4 pins of opto-coupler relay U18 are connected with electronic switch unit 72's extreme point electricity, No. 6 pins of opto-coupler relay U18 are connected with No. 4 pin electricity of opto-coupler relay U19, No. 6 pins of opto-coupler relay U19 is connected with electronic switch unit 72's extreme point electricity. The second electrical isolation unit 73 prevents the isolated two parts of the circuit from being electrically connected directly, and mainly prevents interference caused by the electrical connection.
The electronic switch unit 72 includes a triac U24, and the triac U24 functions as an electronic switch. The T1 electrode of the bidirectional thyristor U24 is connected in series with the common connecting end of the power indicating circuit and the phase line protection circuit, the T2 electrode of the bidirectional thyristor U24 is connected in series with the input end of the motor, a resistor R79 is arranged between the T2 electrode of the bidirectional thyristor U24 and the output end of the electronic switch isolation circuit, and the control electrode of the bidirectional thyristor U24 is connected in parallel with the resistor R79. The T1 electrode and the T2 electrode of the bidirectional thyristor U24 are connected in parallel with a resistor R83 and a capacitor C29, and the resistor R83 and the capacitor C29 are sequentially connected in series. The resistor R79 is connected in parallel with the output end of the electronic switch isolation circuit at the common end of the resistor R83 and the capacitor C29, and the electronic switch unit 72 is used for controlling the circuit to be turned off.
The two ends of the input end of the electronic switch module 7 and the output end of the control module 1 are provided with an electronic switch centralized control module 8, the electronic switch centralized control module 8 comprises a resistor R28, a resistor R27, a triode Q2, a resistor R75 and an LED lamp D26, and the triode Q2 is designed to be a PNP type. The resistor R28 is connected in series with the base of the triode Q2 and the two ends of the output end of the single chip microcomputer, the resistor R27 is connected in parallel with the two ends of the output end of the resistor R28 and the emitter of the triode Q2, the emitter of the triode Q2 is electrically connected with the single chip microcomputer, the resistor R75 and the LED lamp D26 are sequentially connected in series with the collector of the triode Q2, and the triode Q2 is used for carrying out different voltage conversion.
The implementation principle of the embodiment 1 is as follows: when the output end of the V-phase alternating current is connected with the second single-pole double-throw switch of the relay KM8 and the output end of the W-phase alternating current is connected with the first single-pole double-throw switch of the relay KM7, the motor rotates forwards, the indicator lamp module 5 works to display green light in normal operation, and the electronic switch centralized control module 8 works to display green light in normal operation; when the output end of the V-phase alternating current is connected with the first single-pole double-throw switch of the relay KM7 and the output end of the W-phase alternating current is connected with the second single-pole double-throw switch of the relay KM8, the motor rotates reversely, the indicator lamp module 5 works to display the green light of normal operation, and the electronic switch centralized control module 8 works to display the green light of normal operation; when a line fails, the fuse F4 is fused, the alarm unit 3 works to display red light for prompting, and the staff is prompted to replace the fuse F4 in time.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a just reversing motor control circuit, electricity is connected with control module (1), three-phase alternating current and motor, its characterized in that: the motor control system comprises a mechanical switch module (4) used for phase change between any two phases of three-phase alternating current and an electronic switch module (7) used for controlling on-off between the three-phase alternating current and a motor, wherein the input end of the mechanical switch module (4) is electrically connected with the power end of the three-phase alternating current, the output end of the mechanical switch module (4) is electrically connected with the input end of the electronic switch module (7), and the output end of the electronic switch module (7) is electrically connected with the motor.
2. The control circuit of a positive and negative rotation motor according to claim 1, characterized in that: the three-phase alternating current is a U phase, a V phase and a W phase respectively, the V phase and the W phase are both electrically connected with the mechanical switch module (4), the mechanical switch module (4) is connected with the electronic switch module (7) in series, the mechanical switch module (4) comprises a mechanical switch driving unit (41) and a mechanical switch unit (42), the input end of the mechanical switch driving unit (41) is controlled to be connected to the output end of the control module (1), the output end of the mechanical switch driving unit (41) is electrically connected with the input end of the mechanical switch unit (42), and the mechanical switch driving unit (41) is used for driving the mechanical switch unit (42);
electronic switch module (7) include electronic switch drive unit (71) and electronic switch unit (72), the output of U looks, V looks and W looks alternating current all establishes ties and has electronic switch module (7), the input of electronic switch drive unit (71) is controlled connect in the output of control module (1), the output of electronic switch drive unit (71) with the input electricity of electronic switch unit (72) is connected, electronic switch drive unit (71) are used for the drive electronic switch unit (72).
3. The control circuit of a positive and negative rotation motor according to claim 2, characterized in that: the mechanical switch driving unit (41) comprises a first electrical isolation unit (43), wherein an input end of the first electrical isolation unit (43) is electrically connected with the mechanical switch driving unit (41), and an output end of the first electrical isolation unit (43) is electrically connected with an input end of the mechanical switch unit (42).
4. The control circuit of a positive and negative rotation motor according to claim 2, characterized in that: the electronic switch driving unit (71) comprises a second electrical isolation unit (73), wherein an input end of the second electrical isolation unit (73) is electrically connected with the electronic switch driving unit (71), and an output end of the second electrical isolation unit (73) is electrically connected with an input end of the electronic switch unit (72).
5. The control circuit of a positive and negative rotation motor according to claim 3, characterized in that: the output of mechanical switch module (4) with the both ends of mechanical switch unit (42) input are established ties and are had pilot lamp module (5), pilot lamp module (5) are including LED lamp D27 and resistance R77, the anodal access of LED lamp D27 the anodal of three-phase alternating current, LED lamp D27 anodal with first electrical isolation unit (43) electricity is connected, LED lamp D27's negative pole with resistance R77's input electricity is connected, resistance R77's output ground connection.
6. The control circuit of a positive and negative rotation motor according to claim 1, characterized in that: the electronic switch module (7) input with the both ends of the output of control module (1) are equipped with electronic switch centralized control module (8), electronic switch centralized control module (8) include triode Q2, triode Q2's base is controlled connect in the output of control module (1), triode Q2's projecting pole is controlled connect in another output of control module (1), triode Q2's collecting electrode is connected with the earthing terminal.
7. The control circuit of a positive and negative rotation motor according to claim 2, characterized in that: the input end of the three-phase alternating current of the U phase, the V phase and the W phase is electrically connected with a protection unit (2), and the output end of the protection unit (2) is electrically connected with the input end of the mechanical switch unit (42).
8. The control circuit of a positive and negative rotation motor according to claim 7, wherein: the both ends of protection unit (2) are parallelly connected to have alarm unit (3), alarm unit (3) include LED lamp D30, resistance R105, resistance R106 and resistance R107, LED lamp D30's positive pole is connected with the input electricity that the three-phase exchanged, LED lamp D30's negative pole with resistance R105's input electricity is connected, resistance R105's output with resistance R106's input electricity is connected, resistance R106's output with resistance R107's input electricity is connected, resistance R107's output inserts the output of protection unit (2).
9. The control circuit of a positive and negative rotation motor according to claim 5, wherein: the indicator light module (5) is connected with a follow current unit (6) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173148.5U CN214125187U (en) | 2020-12-24 | 2020-12-24 | Forward and reverse rotation motor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173148.5U CN214125187U (en) | 2020-12-24 | 2020-12-24 | Forward and reverse rotation motor control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214125187U true CN214125187U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023173148.5U Active CN214125187U (en) | 2020-12-24 | 2020-12-24 | Forward and reverse rotation motor control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN214125187U (en) |
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- 2020-12-24 CN CN202023173148.5U patent/CN214125187U/en active Active
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