JP2017046458A - Control device replacement method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device replacement method which allows for faster and more reliable replacement of an existing control device to a new control device, even if the front wall of a control board is not the door open/close type but is closed.SOLUTION: An opening 211a is formed by removing the back side of the frame 211 of an existing control board 200, and a new cable 330 is passed through the interior of the existing control board 200, the opening 211a, and a space S on the outside of the sidewall 212 of the existing control board 200 before being connected with the control apparatus 320 of a new control board 300. Thereafter, the existing cable 230 is removed from the existing control board 200, and followed by removal of the existing control board 200, before moving the new control board 300 to a position where the existing control board 200 has been installed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a control device replacement method for replacing control devices such as a control panel, a switchboard, and a relay panel.

  When replacing an existing control panel with a new control panel, there is a case where a space for installing a new control panel cannot be secured in the distribution panel room because the distribution panel room is narrow. In such a case, the technology to remove the existing control panel and install a new control panel in the installation space is to open the front door of the control panel in the frame at the bottom of the existing control panel. In this state, cut off the front side to provide an opening, pull out a new cable from the floor under the installation floor, lay it through the control panel and the opening, connect it to the new control panel, and remove the existing control panel After that, there is one in which a new control panel is installed in the same installation space (see, for example, Patent Document 1). According to the method described in Patent Document 1, a new control panel can be installed at a position where the existing control panel has been installed without being limited by the installation status or installation environment of the existing control panel.

Japanese Patent No. 5497126

  However, in the method described in Patent Document 1, there are some control panels in which the front wall is not a door opening / closing type and is sealed, and in this case, it is difficult to cut off the front side of the frame because of the structure. In that case, the entire control panel must be lifted horizontally with equipment such as jacks, a certain space must be secured, and the above-mentioned cable must be passed through that space. Needed.

  In order to solve the above-described problems, the present invention can replace an existing control device with a new control device more quickly and reliably even when the front wall of the control panel is not a door opening / closing type. It is an object to provide a control device replacement method.

  In order to solve the above problems, the invention of claim 1 includes a frame arranged in a square frame on the installation floor, a side wall rising from two opposite sides of the frame, and a front wall adjacent to the side wall. The control device is accommodated in the cabinet having, and the existing cable from below the installation floor is connected to the control device, and at least one of the side walls has a predetermined space from the side wall of the adjacent facility or building. This is a control device replacement method for replacing an existing control device with a new control device. This control device replacement method includes an opening forming step, a temporary placement step, a cable connection step, an energization switching step, a removal step, a removal step, and a movement step. In the opening forming step, the side on the back side of the frame is removed to form the opening. In the temporary placement step, the new control device is temporarily placed. In the cable connection step, the newly installed cable from below the installation floor is connected to the control device of the newly installed control device through the inside of the existing control device, the opening, and the space. In the energization switching step, the existing control device is set in the energization stopped state, and the new control device is set in the energizable state. In the removal step, the existing cable is removed from the existing control device after the energization switching step. In the removal step, the existing control device is removed. The moving step moves the new control device to the position where the existing control device has been installed after the removal step.

  According to the present invention, for example, first, the side of the existing control device on the back side of the frame is removed to form an opening (opening forming step), and the new control device is temporarily placed (temporary placing step). Next, the new cable from under the installation floor is connected to the control device of the new control device through the inside of the existing control device, the opening, and the space (cable connection step), and the existing control device is turned off. Then, the new control device is brought into a state where power can be supplied (energization switching step). Then, after the energization switching step, the existing cable is removed from the existing control device (removal step), the existing control device is removed (removal step), and after the removal step, the new control device is installed at the position where the existing control device was installed. Is moved (moving step).

  The invention according to claim 2 is such that the opening forming step is performed at the latest before the removing step.

  According to the first aspect of the present invention, the side of the existing control device on the back side of the frame is removed to form an opening, and the existing control device is removed from the opening through a new cable. It is not necessary to lift the existing control device even when the door is not door-opening and closed. In other words, since it does not require much time, labor, equipment, and cost required to lift the existing control device, it is not limited by the installation state or installation environment, and the new control is installed at the position where the existing control device was installed. A device can be installed. That is, even when it is not possible to secure a space for installing the new control device, the existing control device can be replaced with the new control device more quickly and reliably.

  According to the second aspect of the present invention, the opening forming step may be performed before the removal step at the latest, so that the opening timing of the opening forming step can be flexibly changed according to the progress of the replacement work. , Can contribute to the improvement of work efficiency.

It is explanatory drawing which shows the installation state of the existing control panel. It is explanatory drawing which shows the state which removed some frames of the back side of the existing control panel, formed the opening part, and temporarily installed the new control panel. It is explanatory drawing which shows the state which connected the newly installed cable from the installation floor under to the control apparatus of a newly installed control apparatus via the existing control panel. It is explanatory drawing which shows the state which removed the existing cable and control apparatus from the existing control panel. It is explanatory drawing which shows the state which moves and removes an existing control panel. It is explanatory drawing which shows the state which moves a new control panel to the installation position of an existing control panel. It is explanatory drawing which shows the state which finished installing a newly installed control panel. It is the front view (a) which shows the installation state of the existing control panel, a top view (b), and a rear view (c). It is a top view which shows the state (a) at the time of installation of a flame | frame, the state (b) which formed the opening part, and the state (c) which let the newly installed cable pass through the opening part. It is a flowchart which shows the procedure of a control apparatus replacement | exchange method.

  The present invention will be described below based on the illustrated embodiments.

  FIGS. 1-7 is a figure which shows each step, process, etc. in the control apparatus replacement | exchange method which concerns on this embodiment. This control device replacement method is a method for replacing an existing control panel (existing control device) 200 on the installation floor 100 with a new control panel (new control device) 300, particularly a position where the existing control panel 200 is installed. A method of installing the new control panel 300 on the installation floor 100 that is a place.

  First, on the installation floor 100, a gantry 101 is installed, and an existing control panel 200 is placed thereon. A cable hole 102 is formed at the installation position of the existing control panel 200 on the installation floor 100 (within the frame 211), and the existing cable 230 is connected to this cable from a cable processing chamber (not shown) below the floor (underground). It passes through the hole 102 and passes through the existing control panel 200. In addition, a plurality of cable holes 102 or large cable holes 102 are formed in advance on the installation floor 100 so that a new cable 330, which will be described later, can be raised on the installation floor 100.

  Next, the schematic structure and installation state of the control panel 200 will be described. 8A, 8B, and 8C are a front view, a plan view, and a rear view, respectively, of the existing control panel 200 of FIG. The existing control panel 200 includes a cabinet-like / box-like cabinet 210 in which various control devices 220 and members (not shown) are accommodated. End portions of a plurality of existing cables 230 are connected to the control device 220. Note that the control device 220 actually has a complicated shape, but is illustrated in a very abstract form for the sake of simplification of the drawing. Further, the existing control panel 200 and the new control panel 300 have the same structure and installation state.

  The cabinet 210 mainly includes a frame 211 that hits the bottom, a side wall 212 that rises from two facing sides of the four sides of the frame 211, a front wall 213 that is adjacent to the side wall 212, and a back surface B that faces the front wall 213. And equipped with a top board as needed. In FIG. 1, the side walls 212 are two on the front and back of the page, the front wall 213 is located on the left side, and the back B is located on the right side.

  Each configuration of the cabinet 210 will be described. The back surface B is composed only of a frame with a U-shaped downward, and is not provided with a wall plate such as the side wall 212 and is open. Operations such as maintenance of the control device 220 inside the control panel and attachment / detachment of the cable 230 are performed from the opening on the back surface. The front wall 213 may be an openable door.

  The frame 211 is made of an angle steel material or a rectangular steel material having an L-shaped cross section, and the planar shape is formed in a square frame shape ("B" shape). That is, the above-described existing cable 230 is configured to rise from directly below the existing control panel 200 and pass through the frame 211. The material and cross-sectional shape of the frame 211 are set so that necessary strength and rigidity can be ensured even when the opening 211a is formed by cutting a part of the frame 211 as described later. Has been.

  Next, this control device replacement method for the existing control panel 200 will be described with reference to the flowchart of FIG. Here, in FIG. 1 to FIG. 7, a part of the inside of the control panels 200 and 300 is illustrated and simplified for easy explanation and understanding.

  As shown in FIG. 1, an existing control panel 200 having the above-described configuration is installed. At this time, at least one of the side walls 212 of the existing control panel is arranged so as to secure a space S having a certain range from the side walls of the adjacent facilities and buildings. Here, the size of the predetermined space S may be a gap that allows a new cable 330 to be described later to pass through, and specifically, the distance between the side wall 212 and the adjacent equipment is about 100 mm as a guide. This space S is normally closed with a cosmetic box or the like.

  When the existing control panel 200 is replaced with the new control panel 300, first, as shown in FIG. 2, the opening forming step (step S1 opening forming step) is performed on the rear surface B of the frame 211 of the existing control panel 200. Cut out the edges and process the frame into a U-shape. That is, with respect to the frame 211 as shown in FIG. 9A, as shown in FIG. 9B, the side on the back surface B side is cut away to form the opening 211a. At this time, the length of the side to be cut only needs to be large enough to allow the new cable 330 described later to pass through. At this time, in order to ensure the strength of the frame 211, it is not necessary to reach the corners (the corners may be left and cut).

  In the present embodiment, step S1 is described at the beginning of this work. However, when the existing control panel 200 is removed and when the new control panel 300 is moved, the existing cable 230 and the new cable 330 are pulled by the frame 211. This is not necessarily performed in this order, and may be performed before removing the existing control panel 200 in step S6. Further, when each side of the frame 211 is coupled with a bolt or the like and can be disassembled, the bolt may be loosened and the back side may be removed without cutting the back side of the frame 211. .

  Next, as shown in FIG. 2, in the empty space around the existing control panel 200, the new control panel 300 is temporarily placed with its back surface B2 facing the existing control panel 200 (step S2 temporary placement). Step). At this time, the new control panel 300 is placed on the temporary mount 110, and a space is provided between the lower surface of the new control panel 300 and the installation floor 100 so that a new cable 330 described later can be disposed.

  Subsequently, as a cable connection step, as shown in FIG. 3, the new cable 330 is pulled out from under the installation floor 100 and passes through the opening 211 a on the back surface and the space S from the inside of the existing control panel 200 through the cable hole 102. And it connects to the control apparatus 220 of the newly installed control panel 300 (step S3 connection step). That is, as shown in FIG. 9C, the new cable 330 is laid so as to pass through the place where the side of the frame cut out in the opening forming step was present. Then, it is taken into the cabinet of the new control panel 300 through the new cable 330 into the space between the new control panel 300 and the installation floor 100, and the end of the new cable 330 is connected to the control device 320. Thereafter, the energization is switched from the existing control panel 200 to the new control panel 300, the existing control panel 200 is brought into an energization stop state, and the new control panel 300 is brought into an energized state (step S4 energization switching step). Thereby, the existing cable 230 will be in a power failure state.

  Next, as a removal step, as shown in FIG. 4, the existing cable 230 control device 220 is removed from the existing control panel 200 to make the existing control panel 200 as light as possible (for example, only the cabinet 210) (step). S5 removal step).

  Thereafter, as shown in FIGS. 5 and 6, the existing control panel 200 is moved to move and remove from the installation space (step S <b> 6 removal step). Subsequently, as a moving step, the new control panel 300 is moved to the position where the existing control panel 200 has been installed. That is, the newly installed control panel 300 is moved from the state of FIG. 6 and placed on the gantry 101 as shown in FIG. 7 and installed in the installation space where the existing control panel 200 was located (Step S7 movement). Step). Then, the extra length of the new cable 330 is pulled and stored in the cable processing chamber.

  As described above, according to this control device replacement method, the opening 211a can be easily formed because the side corresponding to the back surface B of the existing control panel 200 is cut out from the frame 211 of the existing control panel 200. That is, since the rear panel B is not provided with a wall plate and is in an open state, the side of the frame 211 can be easily excised and the front wall 213 of the existing control panel 200 is blocked. Even if it exists, since it is not necessary to cut out the edge | side by the side of the front wall 213, it is not necessary to lift the existing control panel 200 (it raises). That is, even if a space for installing the new control panel 300 cannot be secured, the existing control panel 200 can be replaced with the new control panel 300 more reliably.

  In addition, since the opening 211a may be formed by cutting a part of the frame 211 of the existing control panel 200, the replacement can be performed easily, quickly and safely. Further, since the required length of the existing cable 230 is not required, the cable cost can be reduced, and the replacement cost can be reduced because the existing control panel 200 does not need to be moved to another location. it can.

  In addition, since the opening forming step may be performed before the removal step at the latest, the opening timing of the opening forming step can be flexibly changed in accordance with the progress of the replacement work, etc., thereby improving work efficiency. Can contribute.

200 Existing control panel (existing control device)
210 Cabinet 211 Frame 211a Opening 212 Side wall 213 Front wall 220, 320 Control device 230 Existing cable 300 New control panel (new control device)
330 New Cable S Space

Claims (2)

A control device is housed in a cabinet having a square frame-like frame disposed on the installation floor, a side wall rising from two opposite sides of the frame, and a front wall adjacent to the side wall. An existing cable is connected to the control device, and at least one of the side walls is replaced with a new control device by replacing an existing control device having a predetermined space from a side wall of an adjacent facility or building. A control device replacement method,
An opening forming step of forming an opening by removing a side related to the back side of the frame;
Temporarily placing the newly installed control device;
A cable connection step for connecting the new cable from the lower floor of the installation control device to the control device of the new control device through the inside of the existing control device, the opening, and the space;
An energization switching step in which the existing control device is energized and the new control device is energized;
After the energization switching step, the removal step of removing the existing cable from the existing control device,
A removal step of removing the existing control device;
After the removal step, a moving step of moving the new control device to a position where the existing control device was installed;
A control device replacement method comprising:   The control device replacement method according to claim 1, wherein the opening forming step is performed at the latest before the removing step.

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