CN217522576U - Motor protection controller - Google Patents

Abstract

The utility model discloses a motor protection controller, including the controller body, this internal control panel and the relay of installing of controller, the control panel is connected with the relay, an break-make for controlling the relay coil, the relay is connected with outside contactor, an break-make for controlling the contactor coil, the control panel is connected with the contactor, an operating condition for detecting the detection contactor and cut off electric leakage lockout protection when the contactor gets electricity, input power supply is control panel and contactor power supply respectively, the control panel is the relay power supply, be equipped with communication interface on the control panel, communication interface passes through the bus and is connected with external equipment, communication between realization control panel and the external equipment. The stability of system's operation has been improved, both can realize also realizing the control to the motor simultaneously to the motor protection, in addition, be equipped with communication interface on the control panel, realize through the bus that communication between control panel and the external equipment, visual and intelligent degree is high, has stronger application.

Description

Motor protection controller

Technical Field

The utility model relates to a motor protection and control technical field particularly, relate to a motor protection controller.

Background

In the prior art, a conventional motor comprehensive protector only has a protection function of a motor, the control of the motor is realized by a contactor, in addition, an independent controller is also needed to realize the control of the contactor, and in some special application scenes, such as a coal mine and other non-grounded neutral point systems, an electric leakage locking function is also needed to be added. In summary, the devices are distributed, and the number of lines is large, which results in a complex system and reduced system reliability.

In this regard, there is a need for improvements in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor protection controller to solve among the prior art each device line connection more, cause the system complicacy, make the problem of the reliability reduction of system.

In order to achieve the above object, the utility model discloses a technical solution is:

the utility model provides a motor protection controller, including the controller body, this internal control panel and relay of installing of controller, the control panel is connected with the relay, a break-make for control relay coil, the relay is connected with outside contactor, a break-make for control contactor coil, the control panel is connected with the contactor, a working condition for detecting detection contactor and cut off electric leakage blocking protection when the contactor is electrified, input power supply is control panel and contactor power supply respectively, the control panel is the relay power supply, be equipped with communication interface on the control panel, communication interface passes through the bus and is connected with external equipment, realize communicating between control panel and the external equipment.

Preferably, the control panel is connected with coil A1 end and the coil A2 end of relay respectively, be equipped with the contact H1 end that closes and the contact H2 end that closes on the relay, be equipped with input power L end and input power N end on the controller body, the L end is connected with control panel and H1 end respectively, and the N end is connected with the coil A3 end of control panel and contactor respectively, and the H2 end is connected with the coil A4 end of contactor.

Preferably, the controller body is provided with three threading holes, three phase lines of the three-phase power supply respectively pass through the corresponding threading holes and are connected with corresponding input main contacts on the contactor, and corresponding output main contacts on the contactor are respectively connected with the motor.

Preferably, the controller body is internally provided with three current transformers, and each current transformer is connected with the control board and used for detecting the current of a corresponding phase line in the three-phase power supply and transmitting the current to the control board.

Preferably, the controller body is provided with an end F1A for connecting a normally open input auxiliary contact of the contactor and an end F1B for connecting a normally open output auxiliary contact of the contactor, and the end F1A and the end F1B are respectively connected with the control board, so that the detection of the working state of the contactor is realized.

Preferably, be equipped with the electric leakage locking circuit on the control panel, realize the electric leakage locking protection to the circuit between contactor load end to the motor, be equipped with the F2A end that is used for connecting contactor normally closed input auxiliary contact and the F2B end that is used for connecting contactor normally closed output auxiliary contact on the controller body, F2A end and F2B end are connected with the electric leakage locking circuit respectively, realize cutting off the electric leakage locking circuit when the contactor gets the electricity.

Preferably, an input power indicator light, a communication interface indicator light, a fault indicator light and a motor running state indicator light are arranged on the controller body.

Preferably, the communication interface is a CAN communication interface or a MODBUS communication interface.

Preferably, four corners of the bottom of the controller body are respectively provided with a U-shaped clamping jaw.

Compared with the prior art the utility model discloses the beneficial effect who has:

the utility model discloses a motor protection controller, each part is integrated in the controller body, does not need complicated line connection, has further improved the stability of system operation, both can realize also realizing the control to the motor simultaneously to the motor protection. In addition, the control panel is provided with a communication interface, communication between the control panel and external equipment is realized through a bus, the visualization and intelligentization degrees are high, and the application is strong.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the present invention.

In the figure: 1. a controller body; 2. a current transformer; 3. threading holes; 4. a motor; 5. a communication interface; 6. a bus.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts belong to the protection scope of the present invention.

Furthermore, in the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 2, the preferred embodiment of the present invention provides a motor protection controller, which includes a controller body 1, and a control board, a relay and three current transformers 2 are installed in the controller body 1.

The controller comprises a controller body 1, a power supply and a power supply control circuit, wherein the top of the controller body 1 is provided with an input power supply L end and an input power supply N end, specifically, the voltage of the input power supply is AC 85V-AC 260V, a live wire of the input power supply is connected with the L end, and a zero wire of the input power supply is connected with the N end.

The coil of the relay is provided with a coil A1 end and a coil A2 end, and the relay is provided with a dynamic contact H1 end and a dynamic contact H2 end.

The coil of the contactor is provided with a coil A3 end and a coil A4 end, and the contactor is provided with three pairs of main contacts, namely an input main contact L1 end, an output main contact T1 end, an input main contact L2 end, an output main contact T2 end, an input main contact L3 end and an output main contact T3 end.

Specifically, the L end is respectively connected with the control board and the H1 end, the N end is respectively connected with the control board and the coil A3 end, the H2 end is connected with the coil A4 end, and the input power supply respectively supplies power to the control board and the coil of the contactor.

The control panel is connected with coil A1 end and coil A2 end respectively, and the coil switching of coil switching that the control panel can be for the coil power supply of relay and can control the relay can control the contactor.

Be equipped with three through wires hole 3 on controller body 1, first through wires hole, second through wires hole and third through wires hole promptly, have three phase lines in the three phase current, U phase line, V phase line and W phase line promptly. The U phase line passes first through wires hole and is connected with L1 end, and the V phase line passes second through wires hole and is connected with L2 end, and the W phase line passes third through wires hole and is connected with L3 end, and T2 end, T3 end and T4 end are connected with the wiring end that motor 4 corresponds respectively.

Further, each current transformer 2 is connected with the control panel respectively, and each current transformer 2 can detect the phase line current that corresponds among the three phase current, and convey to the control panel.

The control panel can control the coil of the relay to be electrified and the relay to be closed, so that the H1 end and the H2 end of the relay are communicated, the coil of the relay control contactor is electrified and the contactor is closed, so that the three pairs of main contacts of the contactor are communicated, and the contactor control motor 4 is electrified to work.

Still be equipped with a pair of normally open auxiliary contact on the contactor, be equipped with wiring end F1A end and F1B end on the controller body 1, normally open input auxiliary contact is connected with F1A end on the contactor, and F1A end is connected with the control panel, and normally open output auxiliary contact is connected with F1B end on the contactor, and F1B end is connected with the control panel. Namely, the working state of the contactor can be detected through the connection control board.

Still be equipped with a pair of normally closed auxiliary contact on the contactor, be equipped with wiring end F2A end and F2B end on the controller body 1, be equipped with electric leakage blocking circuit on the control panel, electric leakage blocking circuit realizes electric leakage blocking protection to the circuit between contactor load end to motor 4. The normally closed input auxiliary contact on the contactor is connected with the end F2A, the end F2A is connected with the leakage locking loop, the normally closed output auxiliary contact on the contactor is connected with the end F2B, and the end F2B is connected with the leakage locking loop, namely the connection control board can control the leakage locking loop to be cut off when the contactor is electrified, so that the contactor can be attracted.

Wherein, be equipped with communication interface 5 on the control panel, this communication interface 5 is CAN communication interface or MODBUS communication interface, the utility model discloses preferably CAN communication interface, CAN communication interface passes through CAN bus 6 and is connected with external equipment, realizes the communication between control panel and the external equipment, and specific external equipment is PLC or host computer.

The control of the relay can be realized through external equipment, so that the contactor is controlled, and the control of the motor 4 is realized; the parameter setting of the control panel can be realized through external equipment; the external device can read the running state of the motor 4 and the fault code detected by the control board.

The controller body is provided with an input power indicator light, a communication interface indicator light, a fault indicator light and a motor running state indicator light. When the input power supply is switched on, the input power supply indicator lamp is on, otherwise, the power supply indicator lamp is off; when the communication interface 5 is accessed to the bus 6 for data transmission, the communication interface indicator light flickers, otherwise, the communication interface indicator light is turned off; when the electric leakage locking loop detects that electric leakage exists, the fault indicator lamp is on, otherwise, the fault indicator lamp is off; when the motor 4 runs, the motor running state indicator light is on, otherwise, the motor running state indicator light is off.

Furthermore, four angles of the bottom of the controller body are respectively provided with a U-shaped clamping jaw, so that the controller is convenient to install and fix.

To sum up, the embodiment of the utility model provides a motor protection controller, each part is integrated in the controller body, does not need complicated line connection, has further improved the stability of system operation, both can realize also realizing the control to motor 4 simultaneously to motor 4 protection. In addition, the control panel is provided with a communication interface 5, communication between the control panel and external equipment is realized through a bus 6, the visualization and intelligentization degree is high, and the application is strong.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (9)

1. The utility model provides a motor protection controller, a serial communication port, including the controller body, install control panel and relay in the controller body, the control panel is connected with the relay, a break-make for controlling relay coil, the relay is connected with outside contactor, a break-make for controlling contactor coil, the control panel is connected with the contactor, a working condition for detecting detection contactor and cut off electric leakage shutting protection when the contactor gets electricity, input power supply is control panel and contactor power supply respectively, the control panel is the relay power supply, be equipped with communication interface on the control panel, communication interface passes through the bus and is connected with external equipment, realize communication between control panel and the external equipment.

2. The motor protection controller of claim 1, wherein the control board is connected to a coil a1 end of the relay and a coil a2 end of the relay, the relay is provided with a make contact H1 end and a make contact H2 end, the controller body is provided with an input power source L end and an input power source N end, the L end is connected to the control board and the H1 end, the N end is connected to the control board and a coil A3 end of the contactor, and the H2 end is connected to a coil a4 end of the contactor.

3. The motor protection controller according to claim 1, wherein the controller body is provided with three threading holes, three phase wires of the three-phase power supply respectively pass through the corresponding threading holes and are connected with corresponding input main contacts on the contactor, and corresponding output main contacts on the contactor are respectively connected with the motor.

4. The motor protection controller according to claim 3, wherein three current transformers are further arranged in the controller body, and each current transformer is connected with the control board and used for detecting the current of the corresponding phase line in the three-phase power supply and transmitting the current to the control board.

5. The motor protection controller according to claim 1, wherein the controller body is provided with an end F1A for connecting with a normally open input auxiliary contact of the contactor and an end F1B for connecting with a normally open output auxiliary contact of the contactor, and the end F1A and the end F1B are respectively connected with a control board to realize detection of the working state of the contactor.

6. The motor protection controller of claim 1, wherein the control board is provided with an electric leakage blocking circuit to achieve electric leakage blocking protection of a line from a load end of the contactor to the motor, the controller body is provided with an end F2A for connecting a normally closed input auxiliary contact of the contactor and an end F2B for connecting a normally closed output auxiliary contact of the contactor, and the ends F2A and F2B are respectively connected with the electric leakage blocking circuit to achieve cutting off the electric leakage blocking circuit when the contactor is powered on.

7. The motor protection controller according to claim 1, wherein the controller body is provided with an input power indicator, a communication interface indicator, a fault indicator and a motor operation status indicator.

8. The motor protection controller of claim 1, wherein the communication interface is a CAN communication interface or a MODBUS communication interface.

9. The motor protection controller according to claim 1, wherein the controller body is provided with U-shaped claws at four corners of the bottom thereof.

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