KR101627418B1 - MCC, Motor Control Center - Google Patents

Abstract

The present invention relates to an MCC (Motor Control Center).
The motor control panel (MCC) is an electric panel designed to supply and control electric power to a motor in the field or to a motor pump accompanying the electric motor.
The motor control panel of the present invention is modularized to provide easy coupling and disconnection of cables. For this purpose, the operation switch module and the MCC module are formed as unit units, and the cables are coupled through the terminal block coupling portion or released.

Description

Motor Control Panel {MCC, Motor Control Center}

Motor pumps used for air conditioning, water supply and drainage, and motors provided for other purposes are used in public offices, factories, buildings and various facilities.

The present invention relates to an electric panel relating to the electric motor. Usually, such an electric panel is referred to as a motor control board, or MCC (Motor Control Center). The motor control panel distributes the electric power to the electric motor to supply electric power, or protects the electric motor and the related load device by blocking the overcurrent. To this end, the motor is controlled 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 an electric distribution panel dedicated to the motor in which a plurality of electric motor units are integrated in one cabinet for efficient management and operation.

In the conventional motor control panel (MCC) as a background of the present invention,

An assembled motor control panel is provided, in which the electromagnetic switch circuits for all motors are arranged in a line under one main power supply. Therefore, if only one motor circuit, or any part in the circuit, is malfunctioning or malfunctioning, it is necessary to shut off the power supply for all motors of the facility and also to turn off the power supply until the malfunction, Lt; / RTI >

Accordingly, a drawer-type motor control panel is provided to solve such a problem, and each motor circuit is formed in a separate form called a unit so that a large number of units are assembled and accommodated in a large housing. However, since many cables must be connected between the terminal block and the base plate, wiring is difficult and time consuming.

Particularly, in the examples of Figs. 1 and 2, the conventional integrated-type electric motor control panel,

When replacing the unit parts, many cables are disassembled and replaced. At this time, there is a possibility that an error occurs in the wiring, which may lead to malfunction or damage due to improper wiring. In addition, since the components are separated from each other and occupy a large space, the volume becomes large and the installation space utilization becomes low.

According to the present invention,

Modularization and standardization of the motor control panel (MCC) to a unit and simplification of the wiring work related to this,

When there is a demand for unit parts replacement, it is possible to reduce the possibility of erroneous wiring during the work of disassembling and replacing a large number of cables, thereby reducing the possibility of erroneous operation caused by erroneous wiring, We want to prevent serious obstacles such as breakage.

Since the unit parts are arranged separately from each other, it takes up a lot of space, and thus it is desired to improve the space utilization and the work efficiency.

Meanwhile, with respect to the operation of installing operation switches on the operation panel, referring to the example of FIG. 1 and the conventional method,

Calculating a position at which the operation switch p2 is to be disposed on the front surface of the operation panel p1, measuring the center of the operation panel p1 with a scale such as a ruler, and displaying the center;

Piercing a switch hole to be engaged with the operation panel p1 by engaging the operation switch p2 in accordance with the center display;

Fastening the switch hole with the operation switch p2;

Determining the arrangement of the duct (p3) to be fixed by mounting the cable (control line, electric wire) of the operation switch p2 to the rear surface of the operation panel p1 in accordance with the arrangement of the operation switch p2;

Attaching and fixing the duct p3 to the operation panel p1 using bolts or iron pieces;

, And the sequence may be changed in its order.

Such conventional operation of installing an operation switch has the following problems.

A series of work processes for calculating the intervals for perforating the switch holes, measuring them in the form of a letter, and displaying the center are cumbersome and time-consuming, and are not easy to occur due to the occurrence of errors. Also, it is not easy to precisely determine the arrangement of the ducts and fix (attach) the ducts with bolts or steel pieces. In busy places, time is wasted, the work process is troublesome, and effort and cost are large.

In order to solve the above-mentioned problems, the motor control panel (MCC) of the present invention includes an MCC module and an operation switch module.

The MCC module includes:

A fixed panel on which a circuit board receiving layer is formed; A circuit board which is seated in the circuit board receiving layer and to which an MCC module terminal block is attached and the circuit is wired; And an MCCB and an MC disposed on a rear side of the circuit board to press and fix the circuit board to the fixed panel.

At this time, the circuit board receiving layer is formed with a rectangular groove having a width smaller than that of the fixed panel, and grooves are formed in a downward direction further downward than the circuit board receiving layer, and grooves are formed in the first row and the second row.

The circuit board is mounted on the circuit board receiving layer from the bottom, and the MCC module side terminal block for assembling the MCC module side cable is attached to the upper surface. The circuit is wired, and a protrusion to be accommodated in the groove is formed on the bottom surface.

The operation switch module includes:

Operating switches; An operation switch support for coupling the operation switch; An operation switch module side cable connected from the operation switch and an operation switch module side terminal block provided at an end thereof; A support bar assembly in which the operation switch and the operation switch support bar are coupled to each other; And an operation panel on which the support assembly is fixed and mounted.

The operation switch module side terminal block and the MCC module side terminal block are connected to each other to perform normal operation or to release the connection in an emergency.

In addition, a case including a case body and a case door is provided,

The MCC module may be installed in the case body, and the operation switch module may be installed in the case door.

At this time, the case body and the case door are coupled by a case hinge, and the case hinge can open the case door with a hinge shaft,

The case hinge device may be provided on the opposite side of the case hinge so as to be gripped or locked by hand.

According to the present invention,

The motor control panel (MCC) can be detachably connected through integrated modularization to facilitate connection or separation of the units.

In addition, complicated wiring work can be eliminated to simplify the work, and the work can be performed quickly and efficiently at the time of trouble repair and replacement work.

In addition, it is possible to prevent erroneous wiring, thereby reducing the possibility of errors and malfunctions, thereby preventing troubles such as breakage caused by erroneous wiring.

The operation of attaching the operation switch to the operation panel can be performed very quickly, accurately, and easily.

In addition, unit parts having high relevance can be provided close to each other in the form of a single package, so that it is possible to use less space, thereby improving utilization of the installation space of the entire system.

First, it relates to the background art of the present invention.
FIG. 1A is an exemplary view of a front view of an appearance, in particular, a maneuvering door (or a motor control panel door); FIG. Fig. 1B is an exemplary view showing the above-mentioned maneuvering panel door from the rear; Fig.
2 is an exemplary view showing the interior of a power tool (or motor control panel).
The following is an illustration of the motor control panel (MCC) of the present invention.
3 is an exemplary view showing the operation switch module in a plan view.
4 is a perspective view of an MCC module;
5 is a side view showing a state in which a terminal or the like is attached to a circuit board; B Bottom perspective;
Figure 6 shows a fixed panel, A side perspective view; B perspective;
7 is a bottom perspective view of the MCC module. However, the control wiring and the power line are not shown.
8 is a side perspective view of the MCC module, showing an A decomposition example; B Example of assembly.
Fig. 9 is an exemplary illustration of a motorcycle control panel formed in a small case and shown in a plan view in a photograph, outside A; Example of B interior.
10 is an exploded perspective view of the operation switch module.
11 is an exploded bottom perspective view of the operation switch module. However, the illustration of cable etc. is omitted.
FIG. 12 is an exemplary view showing a process of attaching a switch hole marking as a perspective view. FIG.
FIG. 13 illustrates a process of forming a switch hole, and FIG. B switch hole is formed by perforation.
Fig. 14 is an example in which a process of coupling an operation switch to a support-side fastening hole formed on an operation switch support is divided into assembled and disassembled.
15 is a bottom exploded perspective view for illustrating the engagement of the operation panel with the assembled support assembly (asy) of the operation switch support.
16 is an exploded perspective view of the support frame assembly and the operation panel. Cables, etc. are omitted.
17 is an exploded perspective view showing the fastening process of the A fastening female screw and the fastening male screw; B is a combined perspective view showing the state of fastening. Cables, etc. are omitted.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

First, the technical background related to the configuration of the present invention will be described again.

The motor control center (MCC) is a panel made for controlling, protecting and supplying power to motors such as motor pumps.

The internal components include: Molded Case Circuit Breaker (MCCB) / No Fuse Breaker (NFB); MC (Magnet Contactor); MPR (Motor Protectiom Relay): OCR (Over Current Relay) / EOCR (Electronic Over Current Relay); CT (Current Transfomer): A-meter: V-meter: Switch, Lamp:

The MCCB (or NFB) is turned off when the leakage current exceeds the rated current at the time of leakage current for the purpose of overload shutdown and device protection.

The MC is a device that turns on / off the load current with an external signal. In this connection, there is an MS (Magnetic Switch), and the MS is a state in which the overload relay is combined, and a signal generated in the overload relay controls the contactor operating coil power.

On the other hand, there is a Select switch for selecting a signal in the local panel or a switch in the Distributed Control System (DCS). According to the selection, a local panel or a distributed control system (DCS ).

Some of the above-described elements may be substituted, added, or omitted.

The following will discuss the motor control panel (MCC) of the present invention.

Fig. 3 shows an example of the operation switch module 2, in which various operation switches 41 (including a push button lamp) for controlling the electric motor are disposed on the operation panel 40 in units of one unit and module. The operation switch 41 is connected to the operation switch module side cable 90c serving as the control wiring 90 and is assembled in the terminal block 120 of the operation switch module side.

4, 7, and 8, the MCCB 10 and the MC 20 are coupled to each other, and the MCC module side cable 50 and the power source The cable 60 is connected to the circuit board 30 or an external power source.

On the upper surface of the MCCB 10, a cut-off switch 11 for interrupting this is formed. On the upper surface of the circuit board 30, an MCC module terminal block 110 for connection with the operation switch module 2 is disposed. The MCCB 10 is a concept including NFB.

The MCC module side terminal block 110 and the operation switch module side terminal block 120 together form a terminal block coupling portion 100.

The MCCB 10 / MC 20 is arranged so that its bottom surface is in contact with the upper surface of the circuit board 30. [ Further, the wiring of the power cable 60 and the cable of the MCC module side 50 is collected in one place by utilizing the circuit board 30. In the case of the power cable 60 wiring, one is drawn out from the MCCB 10 and the other is drawn out from the circuit board 30 to be connected to an external power source. In the case of the MCC module side cable 50, all are connected to the terminal block 110 on the MCC module through the circuit of the circuit board 30.

In this manner, all the MCC module side cables 50 necessary for motor control are gathered at one of the MCC module terminal blocks 110, and are connected or disconnected to the operation switch module side terminal block 120 to be operated. That is, the MCC module side terminal block 110 is bound to the operation terminal module side terminal block 120 for normal operation, or the binding is released to perform troubleshooting and parts replacement.

In connection with the above binding and disassembly, it takes a long time to disassemble and replace a large number of wiring cables at the time of replacing the unit parts, and at this time, an error that the wiring is wrong may occur, , There is a high possibility of device breakage due to erroneous wiring of various cables for control.

However, the MCC module 1 as well as the operation switch module 2 are each formed in the form of one unit, and the MCC module side terminal block 110 and the operation switch module side terminal block 120 If you can bind them together or unlink them as needed,

It is not necessary to disassemble and disconnect the various cable wiring lines at the time of replacing the unit parts, so that the operation can be performed quickly and efficiently. Also, when reconnecting various cables, the probability of error caused by erroneous wiring is low, and the possibility of malfunction and breakage is greatly reduced. In addition, since each component is densely packed and takes the form of one unit unit module, the volume of the entire system can be reduced, so that the utilization space of the installation space is high.

Here, in the case of the MCC module 1, each component such as the MCCB 10, the MC 20, the circuit board 30, and the fixed panel 70 has a fixing groove 81 for coupling with other components, . And the fixing grooves 81 are fastened with the fixing screws 80 so that the whole is bound in the form of one module or unit. In particular, reference is made to Fig.

Looking at the bottom of the circuit board 30 of the example of Fig. A protruding portion 32 formed by a trace that inevitably protrudes due to necessary soldering between the wiring and the circuit 31 from the outside is generated. The protruding portion 32 is formed along the length of the bottom surface of the circuit board 30. The first row row1 is located on the approximately left side and the second row row2 is disposed on the right side . The arrangement of the first and second rows is inevitable in accordance with the optimal arrangement of the respective components such as the MCC module side cable 50 and the MCC module side terminal block 110 attached to the upper surface of the circuit board 30.

6 and 8, the circuit board 30 is seated on the upper surface of the fixed panel 70 and fixed to form a circuit board receiving layer 71 to be received. The circuit board receiving layer 71 is formed by grooving the front surface of the upper surface of the fixing panel 70. The shape of the circuit board 30 corresponds to the shape of the circuit board 30 and has an area capable of accommodating the entire width of the circuit board 30 and a depth corresponding to the thickness of the circuit board 30. The upper surface of the circuit board 30 is placed on the same height surface as the height of the upper surface of the fixed panel 70. The upper surface of the circuit board 30 is covered with the circuit board 30, Therefore, the front side of the bottom of the MCCB 10 / MC 20 is in contact with the upper side of the rear side of the circuit board 30 and the rest of the bottom side, that is, the bottom side of the MCCB 10 / The intermediate side and the rear side come into contact on the same plane on the intermediate side and the rear side of the upper surface of the fixed panel 70. [

4 to 8, the MCCB 10 / MC 20 are arranged in parallel on the rear side of the upper surface of the circuit board 30, and the MCCB 10 / The front side of each bottom surface is brought into contact with the middle and rear sides of the upper surface of the circuit board 30. At this time, it is not fixed separately. Therefore, in the assembled state, the number of the fixing grooves and the number of the fixing screws can be reduced to reduce the cost, and the convenience of the manufacturing and disassembling operation and the speedy processing can be achieved. The circuit board 30 and the MCCB 10 / MC 20 are fixed to the fixed panel 70 and indirectly coupled to each other. Therefore, the circuit board 30 and the MCCB 10 / MC 20 need not be separately connected.

4, 7, and 8, the front side bottom surface of the MCCB 10 / MC 20 is pressurized in a downward direction pressing the upper surface of the rear side of the circuit board 30, The rear side of the circuit board 30 is naturally fixed, so that only the front side of the circuit board 30 may be fixed to the fixed panel 70.

5, the protruding portion 32 is inevitably generated on the bottom surface of the circuit board 30 and the protruding portion 32 is formed on the left side (or right side) of the bottom surface of the circuit board 30 The first row and the second row on the right side (or left side). Therefore, in order to accommodate the protrusions 32 generated in the first row and the second row form on the upper surface of the fixed panel 70, Grooves 72, which are arranged in the second row, should be formed. The grooves 72 are formed so that grooves are formed further downward from the surface of the circuit board receiving layer 71. The point where the first row and the second row meet is a zigzag shape bent twice by changing the direction as viewed from the plane.

The MCCB 10 / MC 20 can be directly fixed to the fixed panel 70, so that the fixing force is good and the fixing between the components can be prevented. It is possible to use only a minimum of fixing grooves and fixing screws and to dissipate only the minimum necessary grooves in the fixing panel 70 to create the groove 72 for receiving the circuit board receiving layer 71 and the projections, And at the same time, it is possible to reduce effort and cost in production.

FIG. 9 illustrates a case of a motor control panel in which a casing is formed to store the MCC module 1 and the operation switch module 2 of the present invention in a small case c10. Here, the MCC module 1 is fixed to and housed in the case body c11, and the operation switch module 2 is fixed (attached) to the case door c12. The same applies to the case where the vehicle is installed in the vehicle control panel door (or the motor control panel door) of the housing case of a large maneuvering platform (or motor control panel) as in the example of Fig.

9A shows a state in which the case body c11 is closed by the case door c12 and the inside is closed. Fig. 9B shows the case body c11 and the case door c12 The case hinge c13 formed on one side of the case door c12 is opened by opening the case door c12 with the hinge axis. The case c14 can be configured to facilitate opening or closing by gripping with the hand by the hand on the side opposite to the case hinge c14.

An example of mounting (attaching, securing) the operation switch module 2 to the example driving door pa or the example case door c12 of Fig. 1 will be described with reference to Figs. 10 to 17 see.

The operation panel door pa or the case door c12 is provided to the operation panel 40 and the operation panel 40 is provided with a panel member 40a provided with a plate made of metal or synthetic resin, And a switch hole 42b / 40b formed by perforating and perforating a circular or polygonal hole on the surface. The perforation of the hole is accomplished through a known technique such as punching, drilling, or cutting.

12 and 13, the position of the switch hole 42b / 40b is formed by the switch hole marking 42 shown in FIG. Work can be done. At this time, the switch hole 42b formed in the switch hole marking 42 and the switch hole 40b formed in the panel member 40a are simultaneously bored.

More specifically, the switch hole marking 42 is provided as a sticker member 42a, and a perforation mark 42c is displayed on the front surface of the perforation mark 42c. And is made to cope with it. The operation information (info) corresponding to the operation switch 41 such as 'manual / automatic, operation, stop' is inputted to the switch hole marking 42 It is also displayed. The back surface of the switch hole marking 42 is coated with a pressure sensitive adhesive (or adhesive) 42d so as to be attached to the front surface of the panel member 40a. In this case, for convenience of use, the back surface 42e of the switch hole marking 42 to which the adhesive is applied may be coated with a backing paper 42e. The switch hole marking 42 may be immediately attached to the surface of the panel member 40a after the backing paper is torn off at the time of fabrication (or installation).

The conventional duct p3 in the example of FIG. 1B is replaced by an operation switch support 43 of the present invention in the form of FIGS. 10, 11, 14 and 15. The operation switch support base (43)

14, a support-side fastening hole 43b is formed on the plane so that the switch / button lamp 41b and the fastening male thread 41c of the operation switch 41 are fastened to the fastening- It can be inserted and inserted vertically. In the form of the side surface, as shown in an enlarged example on the right side of FIG. 15, both sides of the cross section are bent to take a form of 'c' in which three sides are closed. This is referred to as a support bend portion 43c.

The left and right sides of the operation switch 41 are in contact with the end edges of the support bend portion 43c, respectively, so that their positions can be fixed so as not to turn right and left.

In the control wiring 90,

The operation switch wirings 90b may be disposed in an inner storage space of the support bend portion 43c so that the operation switch wirings 90b may be arranged and fixed so as to be exposed to the outside. For example, as shown in Fig. 9B, the operation switch wiring 90b exposed to the outside can be housed in the accommodating space of the support bend portion 43c, as shown in Fig. 15, and neatly arranged.

The operation switch wiring 90b is connected to the operation switch terminal 90a and connected to the operation switch module side cable 90c. At this time, the operation switch terminal block 90a is configured such that the upper surfaces of the both ends of the operation switch terminal block 90a are attached to and fixed to the lowermost end surfaces 43c 'of the support frame bending portions 43c.

The operation switch 41 and the control wiring 90 are coupled to the operation switch support 43 through the same method so that the operation switch 41 and the control wiring 90 are provided in the form of a single assembled cartridge, it is not necessary to perform the wiring operation according to p3. Therefore, in the field, it is possible to prepare the assembled package, the unit type support assembly (asy), and quickly assemble it with other components.

The assembled support assembly asy can be simply coupled to the operation panel 40 without using any separate bolts or engaging iron pieces,

The switch / button lamp 41b and the fastening male thread 41c of the operation switch 41 are directly inserted into the switch holes 42b / 40b by vertically inserting them as shown in Figs. 15 to 17A. Then, as shown in Fig. 17, the fastening female thread 41a is coupled to the fastening male thread 41c by spin bonding. The fastening female screw 41a is vertically pierced so that the upper end thereof is exposed to the outside after passing through the switch / button lamp 41b. On the inner circumference of the fastening female screw 41a, And threaded portions corresponding to the threads of the threaded portion 41c are formed and can be fastened to each other. The constructor can simply fasten the fastening female screw 41a to fasten the operation panel 40 and the support assembly asy. According to such a configuration and method, disassembly and replacement for inspection and repair at the time of malfunction and malfunction can be performed easily and easily, and reassembly is also easy.

On the other hand, as shown in FIG. 16, when the fastening female screw 41a is fastened by spinning, the operating switch 41 can also spin together with the rotation of the screw. Particularly, in the case where the width of each of the operation switches 41 is different from the width of the left and right widths of the operation switches 41 and can not strongly contact the end edge of the support bend portion 43c, it can not be fastened.

In order to prevent this, referring again to the example of FIG. 14, at least one groove receiving portion 41c1 is formed by cutting the groove perpendicularly to the male screw 41c. In the example of the drawing, the outer circumferential arc of the fastening male thread 41c is divided into four equal parts to form a total of four. The protruding engaging portions 43b1 corresponding to the recessed engaging portions 41c1 of the fastening male thread 41c are formed on the support-side fastening holes 43b. In the example shown in the drawing, the inner arc of the support base side fastening hole 43b is divided into four equal parts to form a total of four protruding engagement portions 43b1. The projecting engagement portion 43b1 is engaged with the recessed engagement portion 41c1 so that the operation switch 41 is moved along the spim rotation of the engagement female screw 41a as shown in FIG. Spim rotation is disabled. Therefore, the fastening can be performed with ease.

The installation operation of the operation switch module 2 through such a process according to the present invention can be performed very quickly, accurately, conveniently, and easily as compared with the conventional operation.

1: MCC module
2: Operation switch module
10: MCCB
20: MC
30: Circuit Board
40: Operation panel
50: MCC module side cable
60: Power cable
90: Control wiring
100: terminal block coupling portion
110: MCC module terminal block
120: Terminal block on operation switch module side

Claims (3)

An MCC module and an operation switch module,
The MCC module includes:
A fixed panel on which a circuit board receiving layer is formed; A circuit board which is seated in the circuit board receiving layer and to which an MCC module terminal block is attached and the circuit is wired; And MCCB and MC disposed on the rear side of the circuit board to press-fix the circuit board to the fixed panel,
The operation switch module includes:
An operation switch including a switch / button lamp and a fastening male screw; An operation switch support for coupling the operation switch; An operation switch module side cable connected from the operation switch and an operation switch module side terminal block provided at an end thereof; A support bar assembly in which the operation switch and the operation switch support bar are coupled to each other; And an operation panel for fixing the support assembly,
The operation switch support base has a support bend provided on both sides so as to be bent, and a support-side fastener provided on the plane in a form of a 'c' with three sides closed, Can be inserted vertically,
Wherein the fastening female screw is fastened to the fastening female screw, and the fastening female screw is provided with a thread corresponding to the thread of the fastening male thread and is rotatably coupled and rotatable, Is exposed to the outside,
The left and right sides of the operation switch can be brought into contact with the end edge of the support frame bending portion so that the position of the operation switch is not turned right and left,
Wherein the operation switch wiring connected to the operation switch is arranged to be confined in the internal accommodation space of the support bend portion and is connected to the operation switch terminal block and connected to the operation switch module side cable,
The upper surfaces of both ends of the operation switch terminal block are attached to the lowermost end surfaces 43c 'of the support leg bends,
Wherein the operation switch module side terminal block and the MCC module side terminal block are combined to perform normal operation or to release the engagement in an emergency. The method of claim 1,
And a projecting engagement portion corresponding to the recessed engagement portion is formed on the support-side engagement hole so that the projected engagement portion is engaged with the recessed engagement portion so that the engagement female screw is rotated The rotation of the operation switch is impossible. delete

Images