KR20180123402A - Control network system with motor control function using smart switch - Google Patents

Abstract

The present invention relates to a control network system for performing a motor control function by using smart switches, which modularizes a switch for control related to a motor (electric motor), an electric valve and a pneumatic valve, and a driver for operation, simplifies a switch configuration by realizing a logic function, and transmits and receives control data through communications by connecting all smart switches to one network. The control network system for performing a motor control function by using smart switches comprises: an electronic overload relays (EOCR) for blocking power supplied to a motor when heat is generated due to overload of a motor; an electronic magnetic contactor (MC) for supplying power, which has passed through the EOCR, to a motor; a first smart device including a communications module and a control logic, and controlling an operation and trip operation in connection with the EOCR and a motor connector; a second smart device for transmitting a control signal according to an operation of a user to the first smart device and a programmable logic controller (PLC) through address assignment message communications; a third smart device for transmitting an operation signal of the site to the first smart device; a fourth smart device connected with the first to the third smart device through the address assignment message communications; and a PLC for interfacing data with the first and the second smart device through the fourth smart device. Therefore, a control network system for performing a motor control function by using smart switches is realized.

Description

[0001] The present invention relates to a control network system for performing a motor control function using a smart switch,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control network system that performs a motor control function using a smart switch, and more particularly to a control network system including a motor (electric motor), a switch for control relating to a motor- , Smart switch which is connected with all smart switches in one network to transmit and receive control data through communication, and to control the motor And a control network system performing control functions.

Generally, a large number of motors are operated in various places such as factories, buildings, and industrial facilities for water / sewage control, temperature control, air conditioning, and the like.

A motor control panel, which is an electric panel for operating such an electric motor, that is, a motor control panel called MCC (Motor Control Center) is used.

The motor control panel safely protects the motor and the related load device, and functions to distribute the low-voltage electricity supplied from the transformer to the electric motor and monitor and prevent the overcurrent from flowing. Since the motor needs to be driven or stopped automatically to meet the needs of the field, the motor is controlled by using a circuit using an electromagnetic switch or the like.

In addition, when the electric motor is widely used, the electric motor is controlled by fabricating a dedicated electric power distribution board in which a plurality of electric motor units are integrated in one cabinet for the management and operation efficiency. In particular, a variety of devices such as control switches, relays, and motor contact halves (MC) are used in the motor control panel, which is the motor control panel.

A plurality of control switches are provided, and each of the control switches is connected to the other switch by a serial method (16EA) or a ring method (40EA).

1 is a block diagram of an individual start-up type system of a general motor control board, which includes a molded case circuit breaker (MCCB) 1, a current transformer (CT) 2, a magnetic contact (MC) 3, a motor 4, a programmable logic controller (PLC) 5, an MCC 6 including a plurality of control switches, a field control panel (LOPC) 7 connected to the MCC 6 ).

2 is a block diagram of a communication system of a general motor control panel, which includes a molded case circuit breaker (MCCB) 1, a current transformer (CT) 2, a magnetic contact (MC) 3 A plurality of control switches 6a, 6b, and 6c, and a plurality of control switches 6a, 6b, and 6c in a one-to-one correspondence with the plurality of control switches 6a, 6b, and 6c, the motor 4, the programmable logic controller And a field control board (LOPC) 7a, 7b, 7c connected thereto.

Although only one or three control switches are shown here, a maximum of sixteen control switches are connected when a serial communication method is used, and a maximum of 40 control methods are connected when a serial communication method is used. One control switch (for example, 6a) communicates with the PLC 5 in the RS-485 Modbus mode. In addition, the control panel and the corresponding field control panel are connected to each other via a pulse network.

On the other hand, a conventionally proposed technique for a communication system in a motor control panel including a control switch is disclosed in the following Patent Document 1 to Patent Document 2.

The prior art disclosed in Patent Document 1 includes an MCU controller 12 configured to transmit and receive data signals from a plurality of MCUs 18 via a plurality of motor control units (MCUs) Each of the plurality of MCUs 18 is dynamically connected to a magnetic contactor 22, a magnetic contactor 22 and an MCU controller 12 with electrical contact operable between an open and a closed position, And a local control module 30 configured to monitor and transmit the monitored state information to the MCU controller 12 and to operate the magnetic contactor 22 based on the data signal received from the MCU controller 12. [

With this configuration, an MCC communication system using a centralized control configuration for controlling buckets in the MCC of the MCC communication system is implemented.

The prior art disclosed in Patent Document 2 includes a first CT 10, a second CT 20, and a second CT 20, each of which has an annular core in which a coil is wound and whose central axis in the longitudinal direction is located at three vertexes of a triangle, 3 CT 30, a ZCT 40 having a coiled annular core and a through hole through which a power line of three phases passes, at least the first CT 10, the second CT 20, An electric module including at least a case including the third CT 30 and the ZCT 40 and having at least the measurement function for the power line of the three phases.

With this configuration, the size of the electric module is greatly reduced in the direction perpendicular to the longitudinal direction of the power line, and the power lines can be densely gathered while maintaining the balance characteristics in the ZCT, thereby increasing the space efficiency in the rack Effect.

Korean Patent Publication No. 10-2010-0038162 (Apr. 13, 2010) (Motor Control Center Communication System) Korean Registered Patent No. 10-1636487 (Registered on June 29, 2016) (Electrical Module Including CT and ZCT)

However, since the communication system of the general motor control panel and the conventional technologies as described above use a magnetic switch as a control switch, a relay as a driver, and a selection switch having a complicated configuration, a control panel is required to be manufactured for a long period of time. And the labor cost is increased.

In addition, since a communication system of a general motor control panel and a conventional technology connect a plurality of switches and actuators in a serial manner and a ring manner to perform communication, the number of switches to be connected is limited. If any one of the lines is disconnected, There is a disadvantage in that the switch is broken and the communication is interrupted between the remaining control switches, thereby failing to serve as a motor control board.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a control apparatus for a motor, And others), and to provide a motor control panel network system using a smart switch that simplifies the switch configuration by implementing a logic function.

Another object of the present invention is to simplify control functions and simplify control wiring by allowing all smart switches to be connected to one network (2 WIRE) to transmit and receive control data through communication. , And to provide a motor control panel network system using a smart switch that can substitute a skilled person for a skilled person from a skilled person.

In order to achieve the above object, a network system of a motor control panel using a smart switch according to the present invention includes an electronic overload relay (EOCR) which cuts off power supplied to a motor when heat is generated due to an overload of the motor, ; An electromagnetic contactor (MC) for supplying power to the motor through the electronic overload relay; A first smart device, including a communication module and control logic, for controlling operation and trip operation in conjunction with said electronic overload relay and motor connector; A second smart device for communicating a control signal according to a user's operation to the first smart device and the programmable logic controller via address assignment message communication; A third smart device for communicating operational signals of the site to the first smart device; A fourth smart device connected by address assignment message communication with the first through third smart devices; And a programmable logic controller (PLC) for interfacing data with the first and second smart devices through the fourth smart device.

Wherein the first smart device and the second smart device include a shutdown logic in the communication message.

The first smart device and the second smart device can be connected to a maximum of 128 networks.

The electronic overload relay, the electronic contactor, and the second smart device, in association with the first smart device, the electronic overload relay, and the electronic overload relay.

The first to third smart devices are each configured to implement a message communication module by address assignment and control logic for device control, respectively.

The first smart device includes a DC-DC converter for converting a voltage supplied from the outside into a predetermined voltage; A CAN bus driver for communicating with an external device via address assignment message (Massage) communication; An external input unit for confirming the result of logic execution; A switch for address assignment with a master or a slave; A display lamp indicating a self-diagnosis function and an operation state; A microprocessor operating as a master or a slave according to address assignment of the switch and generating a control signal for resetting the electromagnetic contactor drive and the electronic overload relay in accordance with externally input digital control data; And a digital output unit for outputting a control signal generated in the microprocessor.

The second smart device may include a DC-DC converter for converting a voltage supplied from the outside to a predetermined voltage; A CAN bus driver for communicating with an external device via address assignment message (Massage) communication; An input unit for receiving a result of logic execution or a peripheral device signal; Switches for master and slave and address assignment; A display lamp indicative of a self-diagnosis function and an operation state; And a microprocessor operating as a master or a slave according to a function selection of the switch and performing an alarm function through the display lamp according to digital control data input from the outside.

The third smart device includes a DC-DC converter for converting a voltage supplied from the outside to a predetermined voltage; A CAN bus driver for communicating with an external device via address assignment message (Massage) communication; An input unit for receiving a result of logic execution or data of a peripheral device; A switch for assigning addresses to masters and slaves; A display lamp indicative of a self-diagnosis function and an operation state; And a driver operation switch.

A DC-DC converter for converting a voltage supplied from the outside of the fourth smart device to a predetermined voltage; Address assignment message (Massage) can bus driver and port for communication with external devices via communication; Switches for master and slave and address assignment; A display lamp indicative of a self-diagnosis function and an operation state; An Ethernet driver communication port for transmitting and receiving data structured in the operating state of the smart network; And a serial communication port for communication setting and status monitoring.

The fifth smart device includes a DC-DC converter for converting a voltage supplied from the outside to a predetermined voltage; A CAN bus driver for communicating with an external device via address assignment message (Massage) communication; An external input unit for confirming the result of logic execution; Switches for master and slave and address assignment; A display lamp indicative of a self-diagnosis function and an operation state; An A / D converter for converting a time setting of a user; An A / D converter for converting a real time change value of an external current transformer and a video current transformer; And a digital output device for performing an organization.

According to the present invention, devices such as switches and relays constituting the motor control are modularized and operated through the control logic, so that the implementation of the device can be simplified, It is possible to reduce the manufacturing cost of the apparatus.

In addition, according to the present invention, an address assignment message (Massage) communication is established between the first and second smart devices, thereby improving the data processing speed. In addition, It is possible to transmit operation data and to control precisely in a short time.

In addition, according to the present invention, it is possible to improve compatibility and scalability by organizing communication protocols of a smart device, and it is also advantageous in that remote control in the network is provided from outside the network or the network.

In addition, according to the present invention, all smart switches are connected to one network 2WIRE so that control data can be transmitted and received through communication, which facilitates expansion of the control quantity, simplifies control functions, simplifies control wiring, It also has the advantage of being able to substitute personnel from professional personnel to simple functional personnel.

1 shows a single system configuration of a conventional motor control,
2 is a system configuration diagram of a conventional motor control,
3 is a configuration diagram of a control network system that performs a motor control function using a smart switch according to the present invention.
4 is a configuration diagram of an embodiment of a first smart device applied to the present invention;
5 is a configuration diagram of an embodiment of a second smart device applied to the present invention,
6 is a configuration diagram of an embodiment of a third smart device applied to the present invention,
7 is a configuration diagram of an embodiment of a fourth smart device applied to the present invention,
8 is a block diagram of an embodiment of a fifth smart device applied to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a control network system that performs a motor control function using a smart switch according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a control network system that performs a motor control function using a smart switch according to a preferred embodiment of the present invention. The control network system includes a breaker (MCCB) 110, an electronic overload relay (EOCR) 120 The first smart devices 151 to 153, the second smart devices 161 to 167, the third smart devices 171 to 173, and the third smart devices 171 to 173, 4 smart device 180 and a programmable logic controller (PLC)

Here, the first smart devices 151 to 153 and the second smart devices 161 to 166 are connected by an address assignment message (Massage) communication 195.

Although only six smart devices are shown in FIG. 3, the present invention is not limited to this. The present invention is not limited to this, but a network system using an address assignment message (Massage) And the number of the first smart device and the number of the second smart device can be increased or decreased as needed within a maximum of 64 limits, respectively. Here, the number of the second smart device and the third smart device (smart field control panel) may be implemented in correspondence with the number of the first smart devices, and the first and second smart devices may be configured only according to the request of the user .

In addition, the configuration and operation of each first smart device of the plurality of first smart devices is the same, the configuration and operation of each second smart device of the plurality of second smart devices is the same, and the plurality of third smart devices The configuration and operation of each third smart device is also the same. Thus, for ease of explanation, only one first smart device (e.g., 151), one second smart device (e.g., 161) and a third smart device (e.g., 171) do.

The MCCB 110 interrupts the power supplied to the load when an overcurrent is detected and the electronic overload relay 120 is turned on when the current is increased due to the overload of the motor 140, 151 to open the electromagnetic contactor 130 and shut off the power to be supplied to the motor 140.

In addition, the electromagnetic contactor 130 serves to supply or cut off the electric power that has passed through the electronic overload relay 120 to the motor 140.

The first smart device 151 includes a communication module and a control logic, and controls the operation and trip operation in conjunction with the electronic overload relay 120 and the electromagnetic contactor 130.

As shown in FIG. 4, the first smart device 151 includes a DC-DC converter 201 for converting a voltage supplied from the outside to a predetermined voltage, an address allocation message A CAN bus driver 202 for communicating with an external device via Massage communication, an external input unit 203 for confirming the result of logic execution, a switch 204 for address assignment, a master or slave, A display lamp 205 indicating an operation state, a master or a slave according to the address assignment of the switch 204, and generates a control signal for resetting the electromagnetic contactor drive and the electronic overload relay in accordance with the digital control data inputted from the outside And a digital output unit 207 for outputting a control signal generated by the microprocessor 206. [

8, when the fifth smart device 152 includes the overload trip device function, the microcomputer 317 converts the operation signal of the current selection valve 301 into a digital signal, A second analog-to-digital converter 304 for converting an operation signal of an over time selection valve 303 into a digital signal and transmitting the digital signal to the microprocessor 317, A third analog-to-digital converter 306 for converting an operation signal of a delay time selection valve 305 into a digital signal and transmitting the digital signal to the microprocessor 317, A fourth analog-to-digital converter 308 for converting a current (3-CT) detection signal into a digital signal and transmitting the digital signal to the microprocessor 317, a detection unit 309 for detecting zero- phase sequence current transformers (ZCT) Signal A fifth analog-to-digital converter 310 for converting the digital signal into a digital signal and transmitting it to the microprocessor 317, a display unit 311 for displaying each detection signal under the control of the microprocessor 317, A DC-DC converter 312 for converting a voltage to a predetermined voltage, a CAN bus driver 313 for communicating with an external device through address assignment message communication, a digital input A switch 315 for master and slave address assignment, a display lamp 316 for indicating a self-diagnosis function and an operation state, and a digital output device 315 for performing organization.

In addition, the second smart device 161 may transmit a control signal according to a user's operation to an address assignment message (Massage) communication 195 to the first smart device 151 and the programmable logic controller 190 .

5, the second smart device 161 includes a DC-DC converter 501 for converting an externally supplied voltage into a predetermined voltage, an external device (not shown) via an address assignment message (Massage) A digital input unit 503 for receiving the result of logic operation or a peripheral device signal, a switch 504 for master and slave and address assignment, a self-diagnosis function, and a display A lamp 506 and a microprocessor 507 operating as a master or a slave according to the function selection of the switch 504 and performing an alarm function through the display lamp 506 according to digital control data input from the outside .

In addition, the third smart device 171 transmits an operation signal of the site to the first smart device 151. As shown in FIG. 6, the third smart device 171 converts an externally supplied voltage into a predetermined voltage A CAN bus driver 402 for communicating with an external device via address assignment message communication, a digital input unit for receiving data of a result of logic execution or peripheral devices 403), a switch 404 for assigning an address to the master and slave, a display lamp 405 for indicating the self-diagnosis function and the operation state, a microprocessor 406 for controlling, and a driver operation switch.

7, the fourth smart device 180 includes a DC-DC converter 601 for converting a voltage supplied from the outside to a predetermined voltage, an address assignment message (Massage) communication A can bus driver 602 and a port 604 for communication with an external device, a switch 605 for address allocation of masters and slaves, a display lamp 606 indicating a self diagnosis function and an operation status, An Ethernet driver 603 for transmitting and receiving data in a systematic manner, a serial communication port 604 for communication setting and status monitoring, And a microprocessor 607 for operation control.

The operation of the control network system that performs the motor control function using the thus configured smart switch will be described in detail as follows.

First, the power supplied to the motor 140 as a load is supplied to the motor 140 through the MCCB 110, the electronic overload relay 120, and the electromagnetic contactor 130 in sequence.

When an overcurrent is detected in the input power when power is supplied to the load, the circuit breaker 110 cuts off power supplied to the load. When heat is generated due to an overload in operation of the motor 140, The electronic overload relay 120 cuts off the power supplied to the motor 140 according to the control of the electronic overload relay 120.

A feature of the present invention is that the configuration of the control device for controlling the operation and trip operation of the electromagnetic contactor 130 or resetting the electronic overload relay 120 is implemented simply by a device using a smart switch, The control device using the smart switch can be concurrently connected to the PLC 190 through an address assignment message (Massage) communication 195 to realize accurate control while shortening the control time, Massage) communication is used to cause a failure of a specific control device, the other control device normally performs communication to perform a normal operation.

Here, the present invention associates the first smart device 151 and the second smart device 161 with the address assignment message (Massage) communication 195, and the third smart device 171 associates the first smart device 151 with the second smart device 161 And the motor control panel is connected to the device 151.

Since the first smart device 151, the second smart device 161, and the third smart device 171 are each modularized and operated through a logic function, each smart device configuration is simplified compared to the configuration of the existing control device Thus, it is possible to reduce manufacturing manpower and production time by facilitating the production.

This will be described in more detail as follows.

First, when the first smart device 151 is implemented as a relay, the voltage (DC 24V) supplied from the outside in the DC-DC converter 201 is converted into a predetermined DC voltage (DC 5.5V) And supplies driving power to the microprocessor 206.

In a state in which the microprocessor 206 is activated by the driving power source, the address assignment of the selection switch 204 is searched to determine whether to operate as a master function or a slave function. Here, the user sets address selection of the selection switch 204 to determine whether the first smart device 151 operates as a master function or a slave function. It is assumed that the present invention operates as a master function.

The data output from the second smart device 161 or the PLC 190 via the address assignment message 195 is input to the microprocessor 206 through the external input unit 203, The control data output from the microprocessor 206 is output to the address assignment message (Massage) communication 195 via the CANBUS driver 202. [ At this time, the data transmission speed is 1 Mbps.

In addition, when the microprocessor 206 analyzes the input digital data and controls the electronic overload relay 120 and the electromagnetic contactor 130, the microprocessor 206 generates a relay control signal, And is transmitted to the electronic overload relay 120 through the switch 207 to control the reset or the electromagnetic contactor 130 to drive the motor 140 or stop the motor.

In addition, the microprocessor 206 performs a self-diagnosis and outputs a display control signal of the self-diagnosis result to the display lamp 205. The display control signal of the operating state of the first smart device 151 is also displayed on a display lamp 205). The display lamp 205 illuminates a specific lamp to visually indicate that there is a problem with the system, and displays information on the operating state through the display lamp 205, The operation status of the first smart device 151 as well as other smart devices is displayed on the outside.

Thus, the first smart device 151 can be modularized and controlled by the microprocessor through the logic function, thereby simplifying the implementation of the control device.

Meanwhile, when the first smart device 151 is implemented as an overload trip device, the implementation of the smart device is as shown in FIG. Here, the smart device shown in FIG. 8 is referred to as a fifth smart device 152. The actual fifth smart device 152 should be assigned the same reference numeral as that of the first smart device 151, but the second smart device 152 is denoted by reference numeral 152 for ease of explanation.

The fifth smart device 152 converts a voltage (DC 24V) supplied from the outside in the DC-DC converter 3121 to a predetermined DC voltage (DC 5.5V) and supplies the driving power to the microprocessor 317 .

In a state in which the microprocessor 317 is activated by the driving power source, the address assignment of the selection switch 315 is searched to determine whether to operate as a master function or a slave function. Here, the user selects whether to operate with the master function or the slave function through address assignment of the selection switch 315. [ It is assumed that the present invention operates as a master function.

The data output from the second smart device 161 or the PLC 190 via the address assignment message 195 is input to the microprocessor 317 via the digital input unit 314, The control data output from the microprocessor 317 is output to the address assignment message (Massage) communication 195 through the CAN bus driver 313. [ At this time, the data transmission speed is 1 Mbps.

The microprocessor 317 analyzes the input digital data and generates a relay control signal when the electronic overload relay 120 and the electromagnetic contactor 130 are controlled. And is transmitted to the electromagnetic overload relay 120 through the electromagnetic overload relay 315 to control the reset or the electromagnetic contactor 130 to drive the motor 140 or stop the motor.

The microprocessor 317 outputs a display control signal for displaying a self diagnosis result or a system operation state to a display lamp 316. Accordingly, the display lamp 316 outputs a self diagnosis result or a system operation state Is displayed through the lamp to indicate the presence of the faulty smart device or to indicate the error or normal state of the system to the outside.

Next, when the current selection valve 301 is operated, the first analog-to-digital converter 302 converts the analog current selection signal into a digital signal corresponding to the analog current selection signal and transmits the digital signal to the microprocessor 317.

When the over-time selection valve 303 is operated, the second analog-to-digital converter 302 converts the analog over-time selection signal to a corresponding digital signal and transmits the digital over-time selection signal to the microprocessor 317.

Similarly, when the delay time selection valve 305 is operated, the third analog-to-digital converter 306 converts the analog delay time selection signal into a digital signal corresponding to the analog delay time selection signal and transmits the digital delay time selection signal to the microprocessor 317.

The microprocessor 317 sets the control current according to the current selection signal, the overtime selection signal, and the delay time selection signal transmitted from the first to third analog-to-digital converters 302, 304, and 306 , Set overtime or set delay time, and control overload trip based on it.

Also, the fourth analog-to-digital converter 308 converts the three-phase current (3-CT) detection signal detected by the current detector 307 into a digital signal and transmits the digital signal to the microprocessor 317, / Digital converter 310 converts a detection signal of a zero-phase sequence current transformer (ZCT) 309 into a digital signal and transmits the digital signal to the microprocessor 317.

The microprocessor 317 compares each phase current detected by the current detector 307 with a current for each phase set as a reference and generates an overcurrent or an image harmonic wave is detected by the image current transformer 309, And so on.

The relay control signal thus generated is transmitted to the electronic overload relay 120 through the relay output unit 318 to be reset or transmitted to the electromagnetic contactor 130 to cut off the driving power of the motor 140, .

When the overcurrent detection or the image harmonic detection is performed, the detected data is transmitted via the CAN bus driver 313 via the address assignment message (Massage) communication 195 to the PLC 190 .

Here, the detection data is transmitted together with the identification information (for example, device specific number) for identifying the fifth smart device 152 so that even if a large amount of data is input in the PLC 190, Data can be distinguished.

Control data generated in the PLC 190 is also transmitted to almost all smart devices connected to the address assignment message (Massage) communication 195 at the same time. At this time, Together. When receiving data, the device checks the identification information included in the control data to determine whether the device is its own device. If the device is its own device, the device receives and processes the device and processes the control data in a manner of discarding the received data.

When the smart device is implemented as a protocol conversion device, it is referred to as a fourth smart device 180 and a voltage (DC 24V) supplied from the outside in the DC-DC converter 601 (DC 5.5V) to supply the driving power to the microprocessor 607.

In a state in which the microprocessor 607 is activated by the driving power source, the address assignment of the selection switch 605 is searched to determine whether to operate as a master function or a slave function. Here, the user selects whether to operate with the master function or the slave function through the address assignment of the selection switch 605. [

The data output from the second smart device 161 or the PLC 190 via an address assignment message 195 is transmitted to the microprocessor 160 via the Ethernet driver 603 or the serial communication port 604. [ And the control data output from the microprocessor 607 is inputted to the address bus 607 via the CAN bus driver 602 or the Ethernet driver 603 or the serial communication port 604, Lt; / RTI > At this time, the data transmission speed is 1Mbps for the can bus driver, 10 / 100Mbps for the Ethernet communication, and 19.2kbps for the serial communication.

As described above, according to the present invention, the communication protocol can be changed according to the communication method of the external device connected through the address assignment message (Massage) communication, and data communication can be performed by various communication methods.

In addition, the microprocessor 607 outputs a display control signal to the display lamp 606 to display a self-diagnosis result of the system or a system operation state. Accordingly, the display lamp 606 turns on the corresponding lamp, Diagnosis will show whether there is a faulty system, power to the system, or whether the system is operating normally.

Thus, the fourth smart device 151 can simplify the implementation of the control device by modularly integrating the respective components, and controlling the microprocessor through the logic function.

Next, the slave device will be described.

When the smart device is implemented as an alarm device, it is referred to as a third smart device 171 and the voltage (DC 24V) externally supplied from the DC-DC converter 401 is converted into a predetermined direct current Voltage (DC 5.5V) to supply the driving power to the microprocessor 406.

In a state in which the microprocessor 406 is activated by the driving power source, the address assignment of the selection switch 404 is searched to determine whether to operate as a master function or a slave function. Here, the user selects whether to operate with the master function or the slave function through the address assignment of the selection switch (404). In the present invention, it is assumed that the third smart device 171 operates as a slave function.

The data output from the first smart device 151 or the PLC 190 via the address assignment message 195 is input to the microprocessor 406 through the digital input unit 403, The control data output from the microprocessor 406 is output to the address allocation message (Massage) communication 195 via the CAN bus driver 402. [ At this time, the data transmission speed is 1 Mbps.

The microprocessor 406 analyzes the input digital data to generate an alarm control signal for a system abnormality and outputs the alarm control signal to the display lamp 405. Accordingly, the display lamp 405 turns on the system lamp to display the alarm condition to the outside. Here, the system operation status indicates the normal operation status (W) of the system, and the R, G, and Y indicator lamps indicate the system operation status. Thus, the user can easily recognize the state of the system through the smart alarm device.

As such, the third smart device 171 can simplify the implementation of the control device by modularizing and integrating the respective components and performing alarm control through the logic function in the microprocessor.

When the smart device is implemented as a push button device, this is called a second smart device 161 and a voltage (DC 24V) supplied from the outside in the DC-DC converter 501 is set to a predetermined (DC 5.5V) and supplies the driving power to the microprocessor 507.

In a state in which the microprocessor 407 is activated by the driving power source, the address assignment of the selection switch 505 is searched to determine whether to operate as a master function or a slave function. Here, the user selects whether to operate with the master function or the slave function through the address assignment of the selection switch 505. [ In the present invention, it is assumed that the second smart device 161 operates as a slave function.

In addition, the user can select the automatic or manual function by operating the automatic / manual selection switch of the pushbutton unit 504, and press the Run Push button, the Stop push button, or the Reset button Push button) to enter the function to operate, stop or reset the system. When a specific function is selected through the pushbutton unit 504 as described above, the microprocessor 507 recognizes the function, generates a display control signal on the display lamp 506 for displaying the operation of the function, And transfers the selection data to the can bus driver 502.

The can bus driver 502 outputs the function selection data to be transmitted to an address assignment message (Massage) communication 195. At this time, the data transmission speed is 1 Mbps. The data output to the address assignment message (Massage) communication 195 is transmitted to the first smart device 151 or the PLC 190.

The data output from the first smart device 151 or the PLC 190 through the address assignment message communication 195 is input to the microprocessor 507 via the digital input unit 503 and the data output from the microprocessor 507 And performs a control operation in accordance with input data.

Next, the display lamp 506 lights each lamp based on the display control signal output from the microprocessor 507, thereby visually displaying the operating state of the system. For example, the system displays the normal operation state W, displays the selection status of whether the master function or the slave function is selected, and visually displays each state through a run lamp, a stop lamp, or a failure lamp. Accordingly, the user can easily recognize the state of the system by looking at the lighting state of the operation lamp.

Thus, the second smart device 161 can simplify the implementation of the smart push-button device by modularly integrating the respective components and displaying the respective states through the logic function in the microprocessor.

9 to 12 illustrate actual implementations of the motor control panel network system using the smart device of the present invention as described above.

9 is a circuit diagram of a motor (motor) 140. Reference numeral 710 denotes an example of a control panel implemented using a smart device, and reference numeral 720 denotes an implementation example of the local control panel 720 using a smart device.

The control panel 710 is realized by applying a module as shown in FIG. 4, a smartized smart relay 711 and a smart device as shown in FIG. 5, and the local control panel 72 is also implemented using a smart device as shown in FIG. will be.

When the motor control circuit board and the local control board are modularized and the smart device that performs the logic function is used to implement the circuit diagram of the motor, it is possible to simplify the configuration of the motor control board as a whole compared to the conventional pure analog circuit, So that the manufacturing time of the control panel can be shortened.

10 is a circuit diagram for a motor (motor) 140 and a motor-operated valve normal / reverse operation, reference numeral 710 is an example of a control panel implemented using a smart device, reference numeral 720 is an implementation example of a local control panel 72 using a smart device to be.

The control panel 710 is realized by applying the module as shown in FIG. 4, the smartized smart relay 713 and the smart device shown in FIG. 5, and the local control panel 720 is also implemented using the smart device shown in FIG. will be.

Here, the smart relay 713 includes the forward operation (MC1) control and the reverse operation (MC2) control in the smart relay 711 as shown in FIG. This makes it possible to control the motor and the electric motor in the reverse direction as well as in the forward direction.

When the motor control panel and the control panel and the local control panel are modularized and the smart device that performs the logic function is used to implement the motor and electric valve reversing operation circuit diagram, the configuration of the entire motor control panel is simplified compared to that of the existing pure analog circuit , And the manufacturing time of the motor control panel can be shortened.

11 is a circuit diagram for operating the motor in the Y-D manner. Reference numeral 710 is an example of a control panel implemented using a smart device, and reference numeral 720 is an implementation example of the local control panel 720 using a smart device.

The control panel 710 is realized by applying a module as shown in FIG. 4, a smartized smart relay 715 and a smart device as shown in FIG. 5, and the local control panel 720 is also implemented using a smart device as shown in FIG. will be.

Here, the smart relay 715 controls the motor by the Y-D method (MCM, MCD, MCY), and is a circuit diagram for controlling the motor in accordance with the input signals 88M, 88M, and 88D in the control method shown in FIG.

When a YD operation circuit diagram is implemented using a smart device that modulates the control panel and the local control panel of the motor control panel and performs logic functions, And the manufacturing time of the motor control panel can be shortened.

12 is a diagram illustrating a motor control panel network system using a smart device according to an embodiment of the present invention. Reference numeral 710 denotes an example of a control panel implemented using a smart device. Reference numeral 720 denotes a local control panel 720 using a smart device. Lt; / RTI > In this configuration, address assignment message communication is established up to the PLC 190, thereby implementing a motor control panel network system using a smart device.

The control panel 710 is realized by applying a module as shown in FIG. 4, a smartized smart relay 711 and a smart device as shown in FIG. 5, and the local control panel 720 is also implemented using a smart device as shown in FIG. will be.

When a motor control panel network system is implemented using a control unit and a smart control unit that performs a logic function, the overall control of the motor control board is simplified compared with the implementation of a motor control board using a pure analog circuit , And the manufacturing time of the motor control panel can be shortened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is obvious to those who have.

The present invention is applied to a technique for implementing a motor control panel that is modularized using a smart device and controlled using control logic.

110: Circuit breaker (MCCB)
120: Electronic overload relay
130: Magnetic contactor
140: motor
151: First smart device
152: The fifth smart device
161 to 166: the second smart device
171 to 173: Third Smart Device
180: The fourth smart device

Claims (10)

An electronic overload relay (EOCR) that cuts off the power supplied to the motor when heat is generated due to an overload of the motor;
An electromagnetic contactor (MC) for supplying power to the motor through the electronic overload relay;
A first smart device, including a communication module and control logic, for controlling operation and trip operation in conjunction with said electronic overload relay and motor connector;
A second smart device for communicating a control signal according to a user's operation to the first smart device and the programmable logic controller via address assignment message communication;
A third smart device for communicating operational signals of the site to the first smart device;
A fourth smart device connected by address assignment message communication with the first through third smart devices;
And a programmable logic controller (PLC) for interfacing data with the first and second smart devices through the fourth smart device. Network system.
The first to fourth smart devices perform a function of driving / stopping / tripping 64 motors connected to the line wiring by 2-wire lines and a function of data transmission / reception related thereto, The smart device performs a function of driving / stopping / tripping a motor and a data transmission / reception function associated therewith, in which a maximum of 128 smart devices having respective addresses are connected through address assignment message communication, Thereby performing a motor control function.
In the first smart device, the first smart device operates or stops the motor by only the communication wiring without using the existing sequence wiring of the MC (electromagnetic contactor) and the push button switch, and implements the operation of the straight running, YD start and reverse, and reactor start A control network system that performs motor control functions using a smart switch.
The first smart device may include an MC (Magnetic Contactor) operation function, an operation status display function, a trip function by an external input, an operation status display function [field remote / operation / stop / trip] And a sequence selection function [direct / inactive / normal / YD / reactor start]. The control network system performs the motor control function using the smart switch.
The second smart device according to claim 1 is characterized in that the function of the four switches of the automatic manual operation selection switch and the operation stop trip reset function is realized by one module with four wires The control network system performs a motor control function using a smart switch.
The second smart device according to claim 5, wherein the second smart device modulates the three switches, and includes a push button operation function for operation / stop / trip, an operation state display function [automatic manual operation / stop / trip], an address assignment massage communication function, And a function of stopping by a state input and adding an external switch. The control network system performs the motor control function using the smart switch.
The third smart device according to claim 1, wherein the third smart device implements the function of three switches of the on-site, remote selection switch and the operation / stop / trip / reset function as one module without wiring of the circuit, Wherein the smart control unit performs the motor control function using the smart switch.
The third smart device according to claim 7, wherein the third smart device modularizes the three switches and has a push button operation function of operation / stop / trip, an operation state display function [field remote / operation / stop / trip], an address assignment massage communication function, And a function of stopping by a state input and adding an external switch. The control network system performs the motor control function using the smart switch.
The fourth smart device transmits an operation state of a plurality of smart devices connected to the smart network to an external device and transmits an operation command of the external device to the corresponding device through the smart network to perform an external operation function, , A control function for performing a motor control function using a smart switch using an external transmission function via the Ethernet, a transmission function for transmitting an operation command via the Ethernet to the smart network, and an address massage communication function. system.
The fifth smart device according to claim 1, wherein the fifth smart device operates / stops the motor by performing only the communication wiring without sequence wirings between the MC (magnetic contactor) and the push button switch, implements the operation of the direct start, YD start / (Magnetic contactor) operation function, self-diagnosis trip function, operation status display function [field remote / operation / stop / trip], address massage communication function and sequence selection function [direct / reverse / YD / Wherein the smart control unit is configured to perform a motor control function using the smart switch.

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