CN216564978U - Motor drive control circuit - Google Patents
Motor drive control circuit Download PDFInfo
- Publication number
- CN216564978U CN216564978U CN202123161100.7U CN202123161100U CN216564978U CN 216564978 U CN216564978 U CN 216564978U CN 202123161100 U CN202123161100 U CN 202123161100U CN 216564978 U CN216564978 U CN 216564978U
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- throw switch
- pole double
- relay
- motor
- resistor
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Abstract
The utility model discloses a motor drive control circuit. The technical points are as follows: the direct-current motor comprises a relay, wherein the input end of the relay is respectively connected with a power supply and a ground, a diode D3 is arranged between the power supply and the ground, the output pin of the relay is respectively connected with the positive end and the negative end of the motor, a forward circuit is arranged between two normally-on contacts of the relay, and a reverse circuit is arranged between two normally-off contacts of the relay.
Description
Technical Field
The utility model relates to the field of motor control, in particular to a motor drive control circuit.
Background
The conventional motor driving circuit is mostly driven by an H bridge or a relay, and can simultaneously control the forward rotation and the reverse rotation of the motor or control the forward rotation and the reverse rotation of the motor through a single chip microcomputer/PLC. The existing circuit has the problems of forward rotation and reverse rotation parallel connection and easy parallel connection interference.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a motor driving control circuit for avoiding parallel interference.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a motor drive control circuit, includes the relay, the input of relay is connected power and ground connection respectively, is equipped with diode D3 between power and the ground, the output pin of relay connects the positive negative terminal of motor respectively, be equipped with corotation circuit between two normally on contacts of relay, be equipped with reversal circuit between two normally off contacts of relay.
As a further improvement of the present invention, the forward rotation circuit includes a single-pole double-throw switch K1, a MOS transistor, a resistor R4, a resistor R5, a diode D7, and a diode D5, a normally-on contact corresponding to the connection of the relay and the positive terminal of the motor is connected to the toggle end of the single-pole double-throw switch K1, a first control end of the single-pole double-throw switch K1 is connected to the MOS transistor, the MOS transistor is connected to the power supply and then connected in series with the resistor R4 and the resistor R5, a gate of the MOS transistor is connected to the resistors R4 and R5, the resistor R5 is connected to the diode D7 and the diode D5 and then connected to the ground, and the relay and the normally-on contact corresponding to the connection of the negative terminal of the motor are connected to the ground.
As a further improvement of the present invention, the second control terminal of the single-pole double-throw switch K1 is connected to the first control terminal of the single-pole double-throw switch K1, and the second control terminal of the single-pole double-throw switch K1 is connected to the negative terminal of the motor.
As a further improvement of the present invention, a light emitting diode D1 connected in series is disposed between the second control terminal of the single-pole double-throw switch K1 and the first control terminal of the single-pole double-throw switch K1, and then a resistor R3 is connected.
As a further improvement of the present invention, the inverter circuit includes a single-pole double-throw switch K2, the relay is connected to the positive end of the motor and the corresponding normally-open contact is grounded, the relay is connected to the negative end of the motor and the corresponding normally-open contact is connected to the toggle end of the single-pole double-throw switch K2, and the first control end of the single-pole double-throw switch K2 is connected to the power supply.
As a further improvement of the present invention, the second control terminal of the single-pole double-throw switch K2 is connected to the positive terminal of the motor, and the second control terminal of the single-pole double-throw switch K2 is connected to the first control terminal of the single-pole double-throw switch K2.
As a further improvement of the present invention, a light emitting diode D2 and a resistor R1 which are connected in series with each other are disposed between the second control terminal of the single-pole double-throw switch K2 and the first control terminal of the single-pole double-throw switch K2.
The utility model has the advantages of preventing the parallel interference of the forward rotation circuit and the reverse rotation circuit and improving the circuit stability.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The utility model will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1, the design has the advantages of less electronic components, cost reduction, energy saving, parallel mutual interference prevention and stability. Diode D4, diode D5, diode D6, diode D7, prevent circuit parallel interference and reverse circuit interference. The light emitting diode D1 and the light emitting diode D2 are stop feedback lamps respectively, so that the running state of the circuit can be observed conveniently, the motor stops when positive and negative rotation and stop are both powered by negative electrodes, and the light emitting diode D1 and the light emitting diode D2 are powered by negative electrodes. When the switch is pressed to 3-2 to be switched on, 1 does not supply positive voltage to the motor, the motor lacks phase positive voltage, the coil magnetic field of the motor fails, the coil direct connection characteristic is utilized, the normally-on point of a negative current direct connection relay flows to the switch 3 and the switch 2 and then flows to the end of the motor lacking the positive voltage, and the two ends of the motor power supply are both negative poles, so the motor is quickly stopped. In addition, the circuit can also directly drive the positive and negative rotation by using weak high and low level signals (such as a single chip microcomputer or PLC or other weak signals) of an external power supply, the traditional circuit cannot be realized, the traditional circuit is controlled by a positive pole, and the circuit can be controlled by a negative pole and a weak signal.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (7)
1. A motor drive control circuit characterized by: the motor is characterized by comprising a relay, wherein the input end of the relay is respectively connected with a power supply and a ground, a diode D3 is arranged between the power supply and the ground, the output pin of the relay is respectively connected with the positive end and the negative end of the motor, a forward rotation circuit is arranged between two normally-on contacts of the relay, and a reverse rotation circuit is arranged between two normally-off contacts of the relay.
2. The motor drive control circuit according to claim 1, characterized in that: the forward rotation circuit comprises a single-pole double-throw switch K1, an MOS (metal oxide semiconductor) tube, a resistor R4, a resistor R5, a diode D7 and a diode D5, wherein a normally-on contact corresponding to the connection of the relay and the positive end of the motor is connected with the toggle end of the single-pole double-throw switch K1, a first control end of the single-pole double-throw switch K1 is connected with the MOS tube, the MOS tube is connected with a power supply in series with the resistor R4 and the resistor R5, the grid of the MOS tube is connected with the resistor R4 and the resistor R5, the resistor R5 is connected with the diode D7 and the diode D5 in series and then grounded, and the normally-on contact corresponding to the connection of the relay and the negative end of the motor is grounded.
3. The motor drive control circuit according to claim 2, characterized in that: the second control end of the single-pole double-throw switch K1 is connected with the first control end of the single-pole double-throw switch K1, and the second control end of the single-pole double-throw switch K1 is connected with the negative end of the motor.
4. The motor drive control circuit according to claim 3, characterized in that: and a light-emitting diode D1 connected in series is arranged between the second control end of the single-pole double-throw switch K1 and the first control end of the single-pole double-throw switch K1, and then the light-emitting diode D1 is connected with a resistor R3.
5. The motor drive control circuit according to claim 1, characterized in that: the reverse circuit comprises a single-pole double-throw switch K2, the relay is connected with the positive end of the motor and is grounded through a corresponding normally-open contact, the relay is connected with the negative end of the motor and is connected with a corresponding normally-open contact which is connected with the toggle end of the single-pole double-throw switch K2, and the first control end of the single-pole double-throw switch K2 is connected with the power supply.
6. The motor drive control circuit according to claim 5, characterized in that: the second control end of the single-pole double-throw switch K2 is connected with the positive end of the motor, and the second control end of the single-pole double-throw switch K2 is connected with the first control end of the single-pole double-throw switch K2.
7. The motor drive control circuit according to claim 6, characterized in that: and a light-emitting diode D2 and a resistor R1 which are mutually connected in series are arranged between the second control end of the single-pole double-throw switch K2 and the first control end of the single-pole double-throw switch K2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161100.7U CN216564978U (en) | 2021-12-15 | 2021-12-15 | Motor drive control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123161100.7U CN216564978U (en) | 2021-12-15 | 2021-12-15 | Motor drive control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216564978U true CN216564978U (en) | 2022-05-17 |
Family
ID=81543416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123161100.7U Active CN216564978U (en) | 2021-12-15 | 2021-12-15 | Motor drive control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216564978U (en) |
-
2021
- 2021-12-15 CN CN202123161100.7U patent/CN216564978U/en active Active
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