CN210693547U

CN210693547U - Motor comprehensive protection controller with anti-interference function

Info

Publication number: CN210693547U
Application number: CN201921488617.7U
Authority: CN
Inventors: 张凤雏; 张怡; 张志宝; 许文专
Original assignee: Jiangyin Sfere Electric Co ltd
Current assignee: Jiangyin Sfere Electric Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-06-05
Anticipated expiration: 2029-09-09

Abstract

The utility model relates to a motor comprehensive protection controller with anti-interference electricity function, which comprises a microprocessor, and a main loop voltage loss detection circuit, a super capacitor energy storage circuit, a low power consumption enabling circuit, a contactor control circuit, a remote signaling state monitoring circuit, a communication bus output circuit, an analog quantity output circuit and a display key operation circuit which are connected with the microprocessor; the low-power consumption enabling circuit is connected with the remote signaling state monitoring circuit, the communication bus output circuit, the analog quantity output circuit and the display key operation circuit. When the voltage of a main loop of the motor is detected to have a voltage loss phenomenon of 'electricity interference', the super capacitor continuously supplies power to the controller, and the controller enters a low power consumption mode and records the current running state; when the voltage of the main loop is recovered, the controller executes 'immediate reclosing', 'batch delay reclosing' or 'no-voltage stopping' according to the counted power-down time interval, so that the function of preventing electric shock is realized, and the running state stored before is recovered, thereby ensuring that the motor runs uninterruptedly.

Description

Motor comprehensive protection controller with anti-interference function

Technical Field

The utility model relates to a motor integrated protection controller with prevent shaking electric function is applied to fields such as petroleum, chemical industry, cement to the higher enterprises and public institutions that incessant continuous production required.

Background

In the production process of enterprises, the voltage of a power grid is reduced to 10% -80% of the rated voltage instantaneously due to lightning stroke, short circuit fault reclosing or internal power grid fault and the like, the duration time is 0.5 cycle to 60s, and the phenomenon is called voltage drop and is also called power shaking. The low-voltage motor loop is basically controlled by an alternating-current contactor, and the voltage holding requirements of the alternating-current contactor are as follows: the voltage is not less than 45% or the voltage loss time is not more than 60 ms. Therefore, the electricity interference phenomenon easily causes large-area unplanned shutdown of production equipment, and causes great loss to continuous production enterprises (such as petrochemical industry) and even equipment accidents and personal accidents.

SUMMERY OF THE UTILITY MODEL

The utility model discloses problem and not enough to prior art exist provide a novel motor integrated protection controller with prevent shaking electric function.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

the utility model provides a motor integrated protection controller with prevent shaking electric function, its characteristics lie in, it includes microprocessor, major loop decompression detection circuitry, super capacitor tank circuit, low-power consumption enable control circuit, contactor control circuit, remote signalling state monitoring circuit, communication bus output circuit, analog output circuit and show button operation circuit, low-power consumption enable control circuit contains 4 opto-coupler relays.

And the microprocessor is respectively and electrically connected with the main circuit voltage loss detection circuit, the super capacitor energy storage circuit, the low-power-consumption enabling control circuit, the contactor control circuit, the remote signaling state monitoring circuit, the communication bus output circuit, the analog quantity output circuit and the display key operation circuit.

The optocoupler relay R1 of the low-power-consumption enabling control circuit is electrically connected with a power supply V1 of the display key operation circuit, and the optocoupler relay R2 is electrically connected with a power supply V2 of the remote signaling state monitoring circuit; the optocoupler relay R3 is electrically connected with a power supply V3 of the communication bus output circuit; the optical coupling relay R4 is electrically connected with a power supply V4 of the analog quantity output circuit.

Preferably, the communication bus output circuit is a dual ethernet interface with a switch function.

Preferably, the contactor control circuit is provided with 3 sets of high-power relays which are universal to alternating current and direct current and have the load capacity of 10A.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses can conveniently insert and use in the low pressure three-phase AC motor control circuit, detect "electric shock" phenomenon (the voltage is instantaneous to fall) when main loop no-voltage detection circuit, the controller enables automatic self consumption that reduces of control circuit through the low-power consumption, and use super capacitor's energy storage power supply, the sustainable work 60 seconds after the electricity falls, detect "voltage recovery" the time interval that falls according to the statistics when main loop no-voltage detection circuit, the controller carries out "reclosing immediately", "delay reclosing in batches" or "no-voltage parking", realize the anti-electric shock function, guarantee motor uninterrupted operation with this, guarantee the security and the continuity of production. And a UPS or a dual power supply is saved to supply power for the controller, so that the use cost of a user is greatly reduced.

Drawings

FIG. 1 is a schematic block diagram of the overall circuit of the present invention;

fig. 2 is a schematic block diagram of the low power enable control circuit of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

The whole circuit schematic block diagram of the present invention is shown in fig. 1, and includes a microprocessor 1, a main circuit voltage loss detection circuit 2, a super capacitor energy storage circuit 3, a low power consumption enable control circuit 4, a contactor control circuit 5, a remote signaling state monitoring circuit (i.e. a switching value detection circuit) 6, a communication bus output circuit 7, an analog output circuit 8, and a display key operation circuit 9.

As shown in fig. 1, the main circuit voltage loss detection circuit 2 is connected to the microprocessor 1, and can measure a three-phase AC voltage value up to the maximum AC690V, and transmit a "power-dazzling" and "recovery" status signal to the microprocessor 1, and the main circuit voltage loss detection circuit 2 is an existing voltage detection circuit.

As shown in fig. 1, the super capacitor tank circuit 3 is connected to the microprocessor 1 to supply power to the microprocessor 1.

As shown in fig. 1, the contactor control circuit 5 is connected to the microprocessor 1, and has 3 sets of high-power relays with universal ac/dc and load capacity of 10A, so as to realize start-stop control of a unidirectional motor and a forward/reverse motor.

As shown in fig. 1, the remote signaling state monitoring circuit 6 is connected to the microprocessor 1, and the remote signaling state monitoring circuit 6 is an existing switching value detection circuit.

As shown in fig. 1, the communication bus output circuit 7 is connected to the microprocessor 1, which is a dual ethernet interface with switch function, and adopts an IP175G switch chip to implement ethernet daisy-chain connection.

As shown in fig. 1, an analog output circuit 8 is connected to the microprocessor 1, and the analog output circuit 8 is a conventional one.

As shown in fig. 1, a display key operation circuit 9 is connected to the microprocessor 1, and the display key operation circuit 9 is a conventional one.

As shown in fig. 2, the functional block diagram of the low power consumption enable control circuit of the present invention is shown, the optical coupler relay R1 of the low power consumption enable control circuit 4 is connected to the power supply V1 of the display key operation circuit 9; an optocoupler relay R2 of the low power consumption enabling control circuit 4 is connected with a power supply V2 of the remote signaling state monitoring circuit 6; an optocoupler relay R3 of the low power consumption enabling control circuit 4 is connected with a power supply V3 of the communication bus output circuit 7; the optocoupler relay R4 of the low power consumption enable control circuit 4 is connected to the power supply V4 of the analog output circuit 8.

As shown in fig. 1 and fig. 2, the specific work flow of the present invention is as follows:

will the utility model discloses a motor integrated protection controller with prevent shaking electric function connects in motor main loop.

When the motor starts to normally start and run, the main loop voltage loss detection circuit 2 detects the current voltage value and transmits the current voltage value to the microprocessor 1, and the microprocessor 1 detects that the current voltage value reaches a starting voltage value (namely 75% of rated voltage), and starts to detect whether a 'power dazzling' phenomenon occurs or not; on the contrary, if the motor is not started or the current voltage value does not reach the starting voltage value, the starting is prohibited to detect whether the phenomenon of 'electricity dazzling' occurs.

When the motor is in a normal operation state, the main loop voltage loss detection circuit 2 detects a current voltage value and transmits the current voltage value to the microprocessor 1, the microprocessor 1 detects that the current voltage value drops and is smaller than a set voltage loss value Ud, the microprocessor 1 starts to count the time interval of power failure, the low-power-consumption enabling control circuit 4 and the super capacitor energy storage circuit 3 are actuated, a power supply of an auxiliary function circuit of the motor comprehensive protection controller (a power supply V1 of the display key operation circuit 9, a power supply V2 of the telecommand state monitoring circuit 6, a power supply V3 of the communication bus output circuit 7 and a power supply V4 of the analog output circuit 8) is closed, and the super capacitor continuously supplies power to the controller, so that the power consumption of the motor comprehensive protection controller is reduced to the minimum.

In a power failure state, if the main loop voltage loss detection circuit 2 detects a current voltage value and transmits the current voltage value to the microprocessor 1, the microprocessor 1 detects that the current voltage value is larger than a set recovery voltage value Ur, the microprocessor 1 calculates a power failure time interval T, and if the T is smaller than a set electricity shaking time Ta, the microprocessor 1 controls the contactor control circuit 5 to execute an 'immediate reclosing' operation; if T is larger than Ta but smaller than the set delayed restart time Tb, the microprocessor 1 controls the contactor control circuit 5 to execute 'batch delayed reclosing' operation; if T is greater than Tb, the microprocessor 1 controls the contactor control circuit 5 to perform a "no-voltage shutdown" (i.e., no-closing) operation. After the relevant criteria are completed, the microprocessor 1 acts the low power consumption enabling control circuit 4 again to recover the power supply of the controller auxiliary function circuit.

The utility model relates to a rationally, compact structure, super capacitor and intelligent low-power consumption mode's optimal combination can maintain controller 60 seconds fall normal operating time after the electricity, but wide application in fields such as petroleum, chemical industry, cement to incessant enterprises and public institutions that continuously produce higher requirements.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A motor comprehensive protection controller with an anti-interference function is characterized by comprising a microprocessor, a main loop voltage loss detection circuit, a super capacitor energy storage circuit, a low power consumption enabling control circuit, a contactor control circuit, a remote signaling state monitoring circuit, a communication bus output circuit, an analog quantity output circuit and a display key operation circuit, wherein the low power consumption enabling control circuit comprises 4 optocoupler relays;

the microprocessor is respectively and electrically connected with the main loop voltage loss detection circuit, the super capacitor energy storage circuit, the low-power consumption enable control circuit, the contactor control circuit, the remote signaling state monitoring circuit, the communication bus output circuit, the analog quantity output circuit and the display key operation circuit;

2. The motor integrated protection controller with anti-interference function as claimed in claim 1, wherein said communication bus output circuit is a dual ethernet interface with switch function.

3. The motor comprehensive protection controller with electric dazzling prevention function according to claim 1, characterized in that the contactor control circuit has 3 sets of high-power relays which are universal for alternating current and direct current and have the load capacity of 10A.