JP5388714B2 - Functional unit and control center - Google Patents

Description

  The present invention relates to a functional unit and a control center that perform, for example, operation control of a load such as an electric motor, monitoring of an operation state, generation of an alarm, and the like.

  In the conventional functional unit, the control line connection terminal block is arranged on the front surface inside the functional unit, and each of the input / output contacts of the electronic relay is connected to the control line connection terminal block. In general, the functional unit has a large number of functions. This multi-functionality is realized by adding equipment to the electronic relay or changing the ladder sequence in the electronic relay. In order to use a desired function of the functional unit, the external control line is drawn into the functional unit and connected to a part of the corresponding terminal of the control line connection terminal block.

Japanese Patent Laying-Open No. 2006-246651 (FIG. 1)

  However, in order to add a function that cannot be realized by the function of the electronic relay, the conventional function unit has to be additionally installed with devices constituting the control circuit. Furthermore, in order to ensure the diversity of usage of the equipment, all of the connection wiring of the equipment had to be connected to the control line connection terminal block. If all the connection wires of the devices and electronic relays that make up the control circuit are connected to the control line connection terminal block, the number of terminals on the control line connection terminal block increases, the layout area of the control line connection terminal block increases, and the functional unit There was a problem that the storage efficiency of the equipment installed in the system decreased.

  An object of this invention is to obtain the functional unit which improved the accommodation efficiency of the apparatus mounted in a functional unit.

A functional unit according to the present invention is a functional unit that is detachably housed in a box and controls a load, and is provided on a base attached to a casing composed of a top plate and a side plate, and on the front of the base and an electronic relay is to control the load, and a wiring terminal block connecting the connected connection wires respectively disposed on the rear surface of the base of the input and output contacts of the electronic relay is the position of the electronic relay different sides, Wiring connection means for connecting an external control line provided at one end of the relay wiring connected to the wiring terminal block.

  The functional unit according to the present invention can be configured to improve the storage efficiency of the equipment mounted on the functional unit.

It is a front view which shows the functional unit in Embodiment 1 of this invention. It is a reverse view of the functional unit of FIG. It is a side view of the functional unit of FIG. It is a perspective view which shows the control center in which the functional unit of FIG. 1 was accommodated. It is a front view which shows the functional unit in Embodiment 2 of this invention. It is a reverse view of the functional unit of FIG. It is a side view of the functional unit of FIG. It is a perspective view which shows the control center in which the functional unit of FIG. 5 was accommodated.

Embodiment 1 FIG.
1 is a front view showing a functional unit according to Embodiment 1 of the present invention, FIG. 2 is a rear view of the functional unit, FIG. 3 is a side view of the functional unit, and FIG. It is a perspective view which shows the control center. The control center 20 stores a plurality of functional units 1 in a box 21. The functional unit 1 performs operation control of a load such as an electric motor installed in a factory, monitoring of an operation state, generation of an alarm, and the like.

  The box 21 has a unit chamber door 21a in the front of the unit chamber that houses the functional unit 1, and has external control lines 10 and power cables (not shown) that connect the functional unit 1 and the load, and load monitoring information. A duct chamber door 21c is provided in front of the duct chamber 21b for storing a cable (not shown) for transmission. On the front side of the functional unit 1, an operation handle of the circuit breaker 4 for wiring and an indicator of the electronic relay 5 are arranged. An external terminal block 13 is installed in the duct chamber 21b.

  The base 9 is attached to the top plate 16 and the side plate 17 constituting the casing 15 of the functional unit 1. The circuit breaker 4 for wiring, the electromagnetic switch 11, and the relays 12a and 12b are arranged on the front surface of the base 9. The wiring terminal block 2 is disposed on the back surface of the base 9. The circuit breaker 4 for wiring and the electromagnetic switch 11 constitute a main circuit for supplying electric power to a load such as an electric motor, and the relays 12 a and 12 b constitute a control circuit together with the electronic relay 5. The main circuit and the control circuit control the load.

  The circuit breaker 4 for wiring has contacts 6a, 6b, 6c connected to a bus (not shown), which is a three-phase AC wiring provided on the control center 20, and main circuit wiring (not shown). And the load side terminal 4b is connected to the power source side terminal 11a of the electromagnetic switch 11 by main circuit wiring (not shown). A power cable (not shown) for supplying power to a load such as an electric motor is connected to the load side terminal 11 b of the electromagnetic switch 11.

  The electronic relay 5 is attached to the top plate 16 of the housing 15 so that the display device faces the front of the functional unit 1. Input / output contacts of the electronic relay 5 are respectively connected to the control circuit side terminals of the wiring terminal block 2 by connection wiring (not shown). Further, the respective contacts of the relays 12a and 12b constituting the control circuit together with the electronic relay 5 are also connected to the control circuit side terminal of the wiring terminal block 2 by connection wiring (not shown).

  The wiring terminal block 2 has an external terminal connected to the control circuit side terminal, and the external terminal and the external terminal block 13 disposed in the duct chamber 21b are connected by the relay wiring 8. After the functional unit 1 is stored in the box 21 of the control center 20, the external terminal block 13 is attached to the unit chamber door 21 a at a location close to the functional unit 1, and the external control line 10 is connected to the external terminal block 13. The external terminal block 13 is a connection means for connecting the external control line 10.

  The electronic relay 5 can easily change the circuit configuration by changing the ladder sequence which is a simple program. The electronic relay 5 has a large number of input / output contacts. Monitoring devices such as current sensors, alarm devices, and relays 12a and 12b are connected to the input / output contacts to realize various control functions and monitoring functions. To do.

  In the functional unit 1 of the first embodiment, since the wiring terminal block 2 is arranged on the back surface of the base 9 which is a different side from the electronic relay 5, the functional unit 1 on the front side of the base 9 where the conventional control line connection terminal block is arranged. An area in which other devices can be placed can be generated. Arranging internal devices such as relays 12a and 12b, which are devices constituting the control circuit, and devices constituting the main circuit, in this area improves the storage efficiency of the devices mounted on the functional unit 1, and the functional unit. Can be configured compactly. In this case, the diversity of functions of the functional unit 1 is improved.

  Further, by arranging the equipment constituting the main circuit and the equipment constituting the control circuit on the front side of the base 9, maintenance such as retightening and inspection of the terminal screws can be facilitated.

  Further, by deleting the area where the conventional control circuit side terminals are arranged, the storage efficiency of the devices mounted on the functional unit 1 is improved, and the functional unit 1 can be configured compactly. In this case, the functional unit 1 can be miniaturized.

  According to the specifications for each user, only the terminals corresponding to a part of the wiring terminal block 2 are connected to the external terminal block 13 by the relay wiring 8, and the number of external terminals of the external terminal block 13 is reduced. The connection of the external control lines 10 can be completed simply by connecting the external control lines 10 to the external terminal block 13 having a small number of terminals. Therefore, the functional unit 1 according to the first embodiment has a small number of terminals, unlike the conventional case where the predetermined external terminals of the control circuit side terminals connected to all the contacts of the electronic relay 5 are connected. The external control line 10 can be connected to the external terminal block 13, and the connection work can be facilitated.

  Since the external terminal block 13 is disposed in the duct chamber 21 b, it is not necessary to perform the work of connecting the external control line 10 into the functional unit 1, and external control is performed in the duct chamber 21 b wider than the connection space in the functional unit 1. Since the work of connecting the wire 10 can be performed, the work of connecting the external control line 10 to the external terminal block 13 can be facilitated. Further, by arranging the external terminal block 13 close to the corresponding functional unit 1 in the duct chamber 21b, the correspondence with the functional unit 1 can be easily identified, and the external control line 10 is connected to the wrong functional unit 1. Can be prevented. Further, by arranging the external terminal block 13 close to the corresponding functional unit 1 in the duct chamber 21b, the relay wiring 8 that connects the wiring terminal block 2 and the external terminal block 13 can be shortened.

    Since all the input / output contacts of the electronic relay 5 and the contacts of the relays 12a and 12b are connected to the control circuit side terminals of the wiring terminal block 2, the function unit 1 is used regardless of the specifications of the user who restricts the functions. This configuration can be made common except for the connector 3 to the wiring terminal block 2. Accordingly, since the portion related to the user's specifications is reduced, the functional unit 1 can be manufactured easily, accurately, and in a short time.

  Since all the input / output contacts of the electronic relay 5 and the contacts of the relays 12a and 12b are connected to the control circuit side terminals of the wiring terminal block 2, the intermediate body having a common configuration except for the connector 3 to the wiring terminal block 2 is provided. After manufacturing, the wiring terminal block 2 and the external terminal block 13 can be easily connected by the relay wiring 8.

  In the control center 20 of the first embodiment, the wiring terminal block 2 of the functional unit 1 is arranged on the back surface of the base 9 on the side different from the electronic relay 5, so that the storage efficiency of the equipment mounted on the functional unit 1 is improved. In addition, the functional unit can be made compact. Accordingly, the control center 20 can be configured compactly because the storage efficiency of devices constituting various functions is improved. By mounting the downsized functional unit 1, the control center 20 can be downsized.

  By disposing the equipment constituting the main circuit and the equipment constituting the control circuit in the functional unit 1 on the front side of the base 9, the control center 20 can facilitate maintenance such as tightening and inspection of terminal screws. it can. Since only the terminal corresponding to a part of the wiring terminal block 2 in the functional unit 1 is connected to the external terminal block 13 by the relay wiring 8 and the number of external terminals of the external terminal block 13 is reduced, the control center 20 Connection of the control line 10 can be facilitated.

  Since the external terminal block 13 of the functional unit 1 is disposed in the duct chamber 21b, the control center 20 can easily perform the work of connecting the external control line 10 to the external terminal block 13. Further, by arranging the external terminal block 13 of the functional unit 1 in the vicinity of the corresponding functional unit 1 in the duct chamber 21b, the control center 20 can easily identify the correspondence with the functional unit 1, and the external control line 10 can be prevented from being connected to the wrong functional unit 1.

  As described above, according to the functional unit 1 in the first embodiment of the present invention, the wiring connecting the electronic relay 5 that controls the load and the connection wiring connected to the input / output contact of the electronic relay 5 is connected. Since the terminal block 2 and the wiring connecting means 13 for connecting the external control line 10 provided at one end of the relay wiring 8 connected to the wiring terminal block 2 are provided, the storage efficiency of the equipment mounted on the functional unit is improved. An improved configuration can be achieved.

  According to the control center 20 in Embodiment 1 of the present invention, a plurality of functional units 1 are connected to the electronic relay 5 for controlling the load and the input / output contacts of the electronic relay 5. The wiring terminal block 2 connected to the wiring terminal block and the wiring connecting means 13 for connecting the external control line 10 provided at one end of the relay wiring 8 connected to the wiring terminal block 2 constitute various functions. It can be set as the structure which the accommodation efficiency of the apparatus improved.

  In addition, you may make the external terminal block 13 which is a connection means which connects the external control line 10 into a connector. By using a connector as a connection means for connecting the external control line 10, it is possible to make a batch connection and to facilitate the connection of the external control line 10.

Embodiment 2. FIG.
5 is a front view showing a functional unit according to Embodiment 2 of the present invention, FIG. 6 is a rear view of the functional unit, FIG. 7 is a side view of the functional unit, and FIG. It is a perspective view which shows the control center. In the first embodiment, the connector 3 which is a connecting means for connecting the functional unit 1 and the external control line 10 is arranged on the side plate 17 of the housing 15, and no connecting means is attached to the duct chamber 21 b of the control center 20. It is different in point.

  The connector 3 is disposed on the duct chamber 21 b side of the control center 20 in the functional unit 1. After the functional unit 1 is stored in the box 21 of the control center 20, the external control line 10 connected to the external line connector 7 is connected.

  In the conventional functional unit, an external control line is connected to the control line connection terminal block arranged inside, and therefore, a gap is provided in the side plate of the functional unit housing in order to draw the external control line. If this gap is left open, foreign objects such as tools may enter through this gap and approach the charged part to which the voltage of the functional unit is applied. Moreover, in order to prevent intrusion of foreign objects such as tools, it is necessary to perform a process of closing the gap, which causes a problem that the manufacturing process of the functional unit becomes long.

  In the functional unit 1 according to the second embodiment, the connector 3 that is a connecting means for connecting the external control line 10 to the side plate 17 of the housing 15 is disposed, so that foreign matter enters the functional unit from the portion where the external control line 10 is disposed. This can prevent the foreign matter intrusion prevention step in the external control line arrangement part.

  In addition, by using the connector 3 as a connection means for connecting the external control line 10, it is possible to make a batch connection and to facilitate the connection of the external control line 10.

  Since the connector 3 of the functional unit 1 is disposed on the duct chamber 21b side of the control center 20, the user can easily connect the external control line 10 installed in the duct chamber 21b to the connector 3 of the functional unit 1. Since the external control line 10 is not drawn from the duct chamber 21b to the back of the unit chamber, the length of the external control line 10 can be shortened. In addition, the external control line 10 can be easily aligned with the power cable and the external control line 10 and the power cable of another functional unit 1.

  Since the control center 20 of the second embodiment has the connector 3 disposed in the functional unit 1, it prevents foreign matter from entering the functional unit from the portion where the external control line 10 is disposed, and in the portion where the external control line is disposed. A foreign matter intrusion prevention step can be eliminated. The user can complete the connection of the external control line 10 simply by connecting the external control line 10 to the connector 3 of the functional unit 1. By applying the connector 3 as the connection means of the functional unit 1, it is possible to connect all at once and to easily connect the external control line 10. Since the connector 3 of the functional unit 1 is disposed on the duct chamber 21b side of the control center 20, the user can easily connect the external control line 10 installed in the duct chamber 21b to the connector 3 of the functional unit 1.

  The connector 3 is not limited to the side plate 17 of the housing 15, and may be disposed at any location of the housing 15. The connector 3 is not limited to the case facing the duct chamber 21b side, and may be disposed at the location of the casing 15 close to the duct chamber 21b. Even in this case, the user can easily connect the external control line 10 installed in the duct chamber 21 b to the connector 3 of the functional unit 1.

  Further, the external terminal block 13 may be used as a connecting means arranged in the housing 15.

  In the first and second embodiments, the number of terminals of the connection means 3 and 13 connected to the external control line 10 is described as an example of the number corresponding to a part of all input / output contacts of the electronic relay 5, All input / output contacts of the relay 5 may be connected to the connection means 3 and 13. In this case, after the control center 20 is installed, it is possible to facilitate additional installation or change of control devices, monitoring devices, and the like on the user side.

  Further, although the example in which the wiring terminal block 2 is disposed on the back surface of the base 9 of the housing 15 has been described, the external terminal of the wiring terminal block 2 may be a place where it does not face the front side of the functional unit 1. 9 may be disposed on the side plate 17 or the top plate 16 of the housing 15 other than the front surface of the housing 9.

  Since the functional unit according to the present invention can be configured to improve the storage efficiency of the equipment mounted on the functional unit, it can be suitably applied to a panel device such as a control center that stores the functional unit.

DESCRIPTION OF SYMBOLS 1 Functional unit 2 Wiring terminal block 3 Connector 5 Electronic relay 8 Relay wiring 10 External control line 12a Relay 12b Relay 13 External terminal block 15 Case 20 Control center 21 Box 21b Duct chamber

Claims (8)

A functional unit that is detachably housed in a box and controls a load, and includes a base attached to a casing composed of a top plate and a side plate, and an electronic device that is provided in front of the base and controls the load. A relay terminal, a wiring terminal block connected to each of the input / output contacts of the electronic relay disposed on the back surface of the base that is different from the position where the electronic relay is disposed, and the wiring terminal A functional unit comprising wiring connection means for connecting an external control line provided at one end of the relay wiring connected to the base. The functional unit according to claim 1, wherein an internal device for controlling the load is disposed on a side where the electronic relay is disposed. The functional unit according to claim 1, wherein the wiring connection unit is connected to the relay wiring corresponding to a part of the input / output contact of the electronic relay. The said wiring connection means is arrange | positioned in the duct chamber which accommodates the cable which is provided in the said box and connects the said load and this functional unit, The Claim 1 characterized by the above-mentioned. Functional unit. In the functional unit according to any one of claims 1 to 3,
The functional unit has a housing,
The functional unit, wherein the wiring connection means is arranged in the casing. 6. The functional unit according to claim 5, wherein the wiring connecting means is disposed on a duct chamber side that accommodates a cable that is provided in the box and connects the load and the functional unit. The functional unit according to claim 1, wherein the wiring connection means is a connector. A control center characterized in that a plurality of functional units according to any one of claims 1 to 7 are stored in the box.

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