CN217159366U - Dual-power standby circuit in energy-saving control module of contactor - Google Patents
Dual-power standby circuit in energy-saving control module of contactor Download PDFInfo
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- CN217159366U CN217159366U CN202220870702.5U CN202220870702U CN217159366U CN 217159366 U CN217159366 U CN 217159366U CN 202220870702 U CN202220870702 U CN 202220870702U CN 217159366 U CN217159366 U CN 217159366U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The utility model discloses a dual supply stand-by circuit among contactor energy-saving control module belongs to contactor energy-saving control technical field, include: the power module A2 which is connected with the input detection circuit A3 and is used for converting the voltage of the standby input power Z2 into the direct current low voltage, the starting control circuit A1 which is connected with the main rectification circuit ZM1 and is used for converting the direct current high voltage into the direct current low voltage, and the standby circuit which is used for switching the voltage provided by the power module A2 when the voltage of the starting control circuit A1 is not output and the input of the main input power Z1 is normal; this dual supply standby circuit among contactor energy-saving control module, simple structure, convenient to use, when input voltage is normal, main rectifier circuit ZM1 or start control circuit A1 in the major loop take place to damage the trouble, when can not providing the electric energy to ac contactor, power module A2 provides the electric energy for ac contactor, has solved the problem that ac contactor normally cuts off the power supply and break off, has improved the safety in utilization.
Description
Technical Field
The utility model belongs to the technical field of contactor energy-saving control, the dual supply stand-by circuit among the concretely relates to contactor energy-saving control module.
Background
The contactor is applied to electric power, power distribution and power utilization occasions, and a magnetic field is generated by current flowing through a coil in industrial electricity to close a contact so as to control a loaded electric appliance;
in electrical engineering, a contactor is a device which can quickly cut off an alternating current and direct current main loop and can frequently switch on and off a large current control circuit, so the contactor is frequently applied to a motor as a control object, and can also be used for controlling electric loads such as factory equipment, an electric heater, a working machine, various electric power units and the like, and the contactor not only can switch on and off the circuit, but also has a low-voltage release protection function; the contactor has large control capacity, is suitable for frequent operation and remote control, and is one of important elements in an automatic control system;
in industrial electrical, the types of contactors are many, the working current is different from 5A to 1000A, the contactors are widely used, and in the using process, the conventional contactor coil is burnt out or electronic elements in the energy-saving protection module are damaged due to various factors, so that the contactor is abnormally disconnected and is powered off, the fault of a load electric appliance is caused, and potential safety hazard is caused, so that a dual-power-supply standby circuit needs to be developed to solve the existing problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual supply stand-by circuit among contactor energy-saving control module to solve the problem of the abnormal disconnection of ac contactor among the operating condition.
In order to achieve the above object, the utility model provides a following technical scheme: a dual power supply standby circuit in a contactor energy-saving control module comprises: the power supply control circuit comprises a main rectifying circuit ZM1 for rectifying a main input power Z1 into a high-voltage direct current, an input detection circuit A3 for detecting the input voltage of the main rectifying circuit ZM1, a power supply module A2 connected with the input detection circuit A3 and used for converting the voltage of a standby input power Z2 into a low-voltage direct current, a starting control circuit A1 connected with the main rectifying circuit ZM1 and used for converting the high-voltage direct current into the low-voltage direct current, and a standby circuit used for switching the power supply module A2 to supply voltage when the voltage of the starting control circuit A1 is not output and the input of the main input power Z1 is normal. .
Preferably, the backup circuit is a battery a0 having one end connected to the power module a 2.
Preferably, the backup circuit is a backup rectifier circuit ZM2 having one end connected to the input detection circuit A3 for converting the input voltage to a dc high voltage, and the backup rectifier circuit ZM2 is connected to the power module a 2.
Preferably, the backup rectifier circuit ZM2 is connected to a backup input power supply Z2.
Preferably, the starting control circuit A1 is connected with an AC contactor through a diode D1.
Preferably, the power module a2 is connected to the ac contactor through a diode D2.
Preferably, one end of the diode D2 is connected to the second pin of the power module a2, the first pin of the power module a2 is connected to the standby rectifier circuit ZM2, and the third pin and the fourth pin of the power module a2 are connected to the third pin and the fourth pin of the input detection circuit A3, respectively.
Preferably, the first pin and the second pin of the input detection circuit a3 are connected to the positive electrode and the negative electrode of the input power supply.
Preferably, the second pin of the start control circuit a1 is connected to one end of a diode D1, the other end of the diode D1 is connected to one end of a start circuit, the other end of the start circuit is connected to the first pin of the start control circuit a1 and the main rectifier circuit ZM1, and the third pin of the start control circuit a1 is connected to the ac contactor.
Preferably, the other end of the battery a0 is connected with the third pin of the start control circuit a1, an ac contactor, and a node of the main rectification circuit ZM 1.
The utility model discloses a technological effect and advantage: the dual-power standby circuit in the energy-saving control module of the contactor is simple in structure and convenient to use, on one hand, when input voltage is normal, a main rectification circuit ZM1 or a starting control circuit A1 in a main loop has a damage fault, and cannot provide electric energy for the alternating current contactor, the power supply module A2 provides electric energy for the alternating current contactor, the problem that the alternating current contactor is disconnected due to abnormal power failure is solved, and the use safety is improved; on the other hand, the main input power Z1 and the standby input power Z2 are arranged through the standby rectifying and transforming circuit, and when the main input power Z1 is abnormally powered off, the standby input power Z2 continues to provide electric energy, so that the abnormal disconnection of the alternating-current contactor is prevented.
Drawings
Fig. 1 is a circuit diagram of embodiment 1 of the present invention;
fig. 2 is a circuit diagram of embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples 1,
The utility model provides a dual supply stand-by circuit among contactor energy-saving control module as shown in figure 1, include: a main rectifying circuit ZM1 for rectifying a main input power Z1 into a high-voltage direct current, an input detection circuit A3 for detecting the input voltage of the main rectifying circuit ZM1, a power module A2 connected with the input detection circuit A3 and used for converting the voltage of a standby input power Z2 into a low-voltage direct current, a starting control circuit A1 connected with the main rectifying circuit ZM1 and used for converting the high-voltage direct current into the low-voltage direct current, and a standby circuit used for switching the power module A2 to supply voltage when the voltage of the starting control circuit A1 is not output and the main input power Z1 is input normally;
the standby circuit is a standby rectifying circuit ZM2 with one end connected to the input detection circuit A3 and used for converting input voltage into direct-current high voltage, and the standby rectifying circuit ZM2 is connected with the power module A2; the standby rectifying circuit ZM2 is connected with a standby input power supply Z2; the starting control circuit A1 is connected with an alternating current contactor through a diode D1; one end of the diode D2 is connected with a second pin of the power module A2, a first pin of the power module A2 is connected with the standby rectifying circuit ZM2, and a third pin and a fourth pin of the power module A2 are respectively connected with a third pin and a fourth pin of the input detection circuit A3; in this embodiment, the first pin and the second pin of the input detection circuit a3 are connected to the positive electrode and the negative electrode of the input power supply. A second pin of the starting control circuit A1 is connected with one end of a diode D1, the other end of the diode D1 is connected with one end of a starting circuit, the other end of the starting circuit is connected with a first pin of a starting control circuit A1 and a main rectification circuit ZM1, and a third pin of the starting control circuit A1 is connected with an alternating current contactor;
the standby rectifier circuit ZM2 is put into operation:
the main rectification circuit ZM1 rectifies the input voltage into a direct current high voltage to be transmitted to the first pin of A1, A1 is a starting control circuit and contains a direct current low voltage V1, a starting circuit and a time sequence control circuit, the direct current low voltage V1 is transmitted to an alternating current contactor coil through a diode D1, and when a main input power supply of the main rectification transformation circuit Z1 is connected, the alternating current contactor finishes suction and keeps running;
when the standby input power supply Z2 is connected, the standby input power supply Z2 can be alternating current voltage or direct current voltage, the standby input power supply Z2 is rectified by a standby rectifying circuit ZM2 to be converted into direct current high voltage and is transmitted to the first pin of the power supply module A2, direct current low voltage V2 is generated inside the power supply module A2, the first pin and the second pin of the input detection circuit A3 are connected with the main input power supply Z1, when the input power supply of the main input power supply Z1 is detected to be normal, the output end of the input detection circuit A3 sends out a working signal, the power supply module A2 is connected with an internal input voltage switch to start working, the required direct current voltage is generated by the suction of an alternating current contactor, and the required direct current voltage is sent to a coil of the alternating current contactor through a diode D2; when the main circuit, namely the start control circuit a1, has a fault and no voltage output, the voltage output by the power module a2 is supplied to the ac contactor through the diode D2 to keep holding, so as to prevent the ac contactor from breaking due to abnormal power failure.
The standby rectifier circuit ZM2 is disengaged:
when the main input power supply Z1 is disconnected, the input detection circuit A3 detects that the main input of the main input power supply Z1 has no voltage, the output end of the input detection circuit A3 sends a stop working signal, the power supply module A2 disconnects an internal input voltage switch, the direct-current low-voltage V2 voltage output of the power supply module A2 is zero volt, and the alternating-current contactor is disconnected due to the loss of voltage of a coil;
after the input power Z2 is disconnected, the voltage output of the direct-current low voltage V2 of the power module A2 is zero volts, and the alternating-current contactor is disconnected because the coil has no voltage;
the main input power Z1 and the standby input power Z2 are arranged through the standby rectification transformation circuit, and when the main input power Z1 is abnormally powered off, the standby input power Z2 continues to provide electric energy, so that the abnormal disconnection of the alternating-current contactor is prevented;
examples 2,
Unlike embodiment 1, as shown in fig. 2, the backup circuit is a battery a0 having one end connected to a power module a2, and the other end of the battery a0 is connected to a third pin of the start control circuit a1, an ac contactor, and a node of a main rectifier circuit ZM 1;
battery a0 was put into operation:
the main rectification circuit ZM1 rectifies the input voltage to a first pin of a high-voltage dc voltage supply a1, a1 is a start control circuit, and includes a low-voltage dc V1, a start circuit, and a timing control circuit. The direct-current low voltage V1 is transmitted to an alternating-current contactor coil through a diode D1, and when a main input power supply Z1 is connected, the alternating-current contactor finishes attraction and keeps running;
the second output end of the battery A0 sends voltage to the power supply module A2, the first pin and the second pin of the input end of the input detection circuit A3 are connected with the main input power supply Z1, when the main input power supply Z1 is detected to be normal, the output end of the input detection circuit A3 sends out a working signal, the power supply module A2 is connected with an internal input voltage switch to start working, a direct current voltage required by the AC contactor to be held is generated and sent to a coil of the AC contactor through a diode D2, when the main circuit, namely the A1, is a starting control circuit internally failed and has no voltage output, the voltage output by the power supply module A2 is continuously held by the AC contactor through the diode D2, and the effect of preventing the AC contactor from being disconnected normally;
battery a0 is out of service:
when the main input power supply Z1 is disconnected, the input detection circuit A3 detects that the main input of the main input power supply Z1 has no voltage, the output end of the input detection circuit A3 sends a stop working signal, the power supply module A2 disconnects an internal input voltage switch, the direct-current low-voltage V2 voltage output of the power supply module A2 is zero volt, and the alternating-current contactor is disconnected due to the loss of voltage of a coil;
when the input voltage is normal, the main rectifying circuit ZM1 or the starting control circuit A1 in the main loop has damage fault and can not provide electric energy for the AC contactor, the power supply module A2 provides electric energy for the AC contactor, the problem that the AC contactor is disconnected due to abnormal power failure is solved, and the use safety is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The utility model provides a dual supply stand-by circuit in contactor energy-saving control module which characterized in that: the method comprises the following steps: the power supply control circuit comprises a main rectifying circuit ZM1 for rectifying a main input power Z1 into a high-voltage direct current, an input detection circuit A3 for detecting the input voltage of the main rectifying circuit ZM1, a power supply module A2 connected with the input detection circuit A3 and used for converting the voltage of a standby input power Z2 into a low-voltage direct current, a starting control circuit A1 connected with the main rectifying circuit ZM1 and used for converting the high-voltage direct current into the low-voltage direct current, and a standby circuit used for switching the power supply module A2 to supply voltage when the voltage of the starting control circuit A1 is not output and the input of the main input power Z1 is normal.
2. The dual-power backup circuit in the contactor energy-saving control module according to claim 1, characterized in that: the backup circuit is a battery a0 having one end connected to a power module a 2.
3. The dual-power backup circuit in the contactor energy-saving control module according to claim 1, characterized in that: the standby circuit is a standby rectifying circuit ZM2 with one end connected to the input detection circuit A3 and used for converting input voltage into direct-current high voltage, and the standby rectifying circuit ZM2 is connected with the power module A2.
4. The dual-power backup circuit in the contactor energy-saving control module according to claim 3, wherein: the standby rectifying circuit ZM2 is connected with a standby input power supply Z2.
5. The dual-power backup circuit in the contactor energy-saving control module according to claim 1, characterized in that: the start control circuit a1 is connected to the ac contactor through a diode D1.
6. The dual-power backup circuit in the contactor energy-saving control module according to claim 3, wherein: the power supply module A2 is connected with the AC contactor through a diode D2.
7. The dual-power backup circuit in the contactor energy-saving control module according to claim 6, wherein: one end of the diode D2 is connected to the second pin of the power module a2, the first pin of the power module a2 is connected to the standby rectifier circuit ZM2, and the third pin and the fourth pin of the power module a2 are connected to the third pin and the fourth pin of the input detection circuit A3, respectively.
8. The dual-power backup circuit in the contactor energy-saving control module according to claim 1, characterized in that: the first pin and the second pin of the input detection circuit A3 are connected to the positive electrode and the negative electrode of the input power supply.
9. The dual-power backup circuit in the contactor energy-saving control module according to claim 1, characterized in that: the second pin of the starting control circuit A1 is connected with one end of a diode D1, the other end of the diode D1 is connected with one end of a starting circuit, the other end of the starting circuit is connected with the first pin of a starting control circuit A1 and a main rectification circuit ZM1, and the third pin of the starting control circuit A1 is connected with an alternating current contactor.
10. The dual-power backup circuit in the contactor energy-saving control module according to claim 2, characterized in that: the other end of the battery A0 is connected with the third pin of the starting control circuit A1, an alternating current contactor and a node of a main rectifying circuit ZM 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870702.5U CN217159366U (en) | 2022-04-15 | 2022-04-15 | Dual-power standby circuit in energy-saving control module of contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870702.5U CN217159366U (en) | 2022-04-15 | 2022-04-15 | Dual-power standby circuit in energy-saving control module of contactor |
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| Publication Number | Publication Date |
|---|---|
| CN217159366U true CN217159366U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220870702.5U Active CN217159366U (en) | 2022-04-15 | 2022-04-15 | Dual-power standby circuit in energy-saving control module of contactor |
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| Country | Link |
|---|---|
| CN (1) | CN217159366U (en) |
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- 2022-04-15 CN CN202220870702.5U patent/CN217159366U/en active Active
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