JP2000013936A - Method for control board renewal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the renewal cost of an already installed control board by shortening the period of verification tests and reducing a work time by replacing the control board with a new control board in a prescribed procedure. SOLUTION: Firstly, an intermediate board 3 is prepared and two junction cables 9 are wired to an already installed control board 1 from the board 3. Of the two contacts (a) and (b) of the board 3, one contact (a) is closed and the other (b) is closed, and then, their one ends are connected to each other. The two junction cables 9 are connected to both terminals of the contact (a). The cables 9 are directly sleeve-connected to wiring 8 with a space in between. When the cables 9 are connected to the control board 1, the board 1 can be maintained in an operating state. When the two direct sleeve-junctions 7 are disconnected from each other, a controller is connected to the 1/04 of the control board 1 through the wiring 8, one direct sleeve junction 7, one junction cable, the contact (a) of the intermediate board 3, the other junction cable 9, and the other direct sleeve junction 7 in this order and a facility can be maintained in an operating state. The control board 1 is moved to a shunting location and replaced with a new control board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control panel updating method for updating a control panel to a new one in a hot-line state when a control device is controlled by the control panel.

[0002]

2. Description of the Related Art Many conventional control devices are controlled by a control panel via a number of wires such as power lines, signal lines, and communication lines. When such a system has been used for a long time, a new control panel is created, and if it is superior in terms of operability, efficiency, function, etc., it may be replaced with a new control panel. Thus, when the control panel was replaced with a new one, it was generally updated in the following procedure. Step 1: Shut down the equipment. Step 2: Remove all wiring connecting the existing control panel and the control device. Step 3: The existing control panel is evacuated to the evacuation place. Step 4: Extend the wiring and connect to the existing control panel. Step 5: The existing control panel is temporarily operated to check the operation. Step 6: Install a new control panel at the place where the existing control panel was originally located. Step 7: Connect a simulation circuit to the newly installed control panel and temporarily operate it to perform an operation test. Step 8: If the operation is normal in step 7, the simulated circuit is removed and regular wiring is performed. Step 9: Activate the new control panel, confirm the operation, and complete the update.

[0003]

However, this conventional method has the following problems. (1) Since a simulation circuit is used, it takes a lot of time to perform a verification test based on actual equipment. (2) When switching, it takes a long time to stop the equipment,
Uptime has been reduced and costs have been substantially increased.

[0004]

Accordingly, a control panel updating method according to the present invention comprises an existing control panel, a control device controlled by the existing control panel, and a large number of wires connecting the existing control panel and the control device. In the operating system configured as above, the existing control panel is replaced with a new control panel by the following procedure. Step 1: For each wiring, prepare a relay panel having two contacts, a closed a contact and an open b contact, and guide two relay cables from both ends of the closed a contact to the existing control panel. Step 2: The ends of the two relay cables are connected directly to the wiring by a direct sleeve in a live state with a space between them. Step 3: The wiring between the two places connected by the direct sleeve is cut in a live state. Step 4: The existing control panel is moved to an evacuation area in a live state. Step 5: Install a new control panel equipped with a terminal block in a place where the existing control panel was located. Step 6: One terminal of the terminal block is connected to the control device, and the other terminal is connected to one end of the a contact and connected to the other end of the b contact connected to the control device. Step 7: Close the b-contact of the relay board and connect the control device to the newly installed control board. Step 8: The connection of the terminal block is switched, and the control device and the newly installed control panel are directly connected. Step 9: removing the relay cable and removing the existing control panel and the relay panel. By performing the above procedure, the downtime of the equipment and the work for renewal can be kept to a minimum, and a reliable test can be performed according to the actual equipment.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the progress of the updating work of the equipment to which the method of the present invention is applied along with the progress of the wiring status, and FIG. 2 is a flowchart showing the procedure. In the figure, 1 is an existing control panel to be replaced, 2 is a newly installed control panel, 3 is a relay panel having two contacts,
4 is an I / O which is an input / output unit of the existing control panel 1, 5 is a terminal block, 6 is an I / O of the new control panel 2, 7 is a straight sleeve connecting part for connecting two wirings, 8 is a wiring, 9 is a relay cable. In FIG. 1, all the lines including the wiring 8 are drawn as one line, but actually, many lines are used and bundled, and all the lines are the same as those described below. Handle it.

[0006] The existing control panel 1 and the new control panel 2 are connected to the outside via I / Os 4 and 6 of input / output units, respectively. The initially existing control panel 1 is connected to a wiring 8 via an I / O 4, and the other end of the wiring 8 is connected to a control device (not shown). The existing control panel 1 controls the control device via the wiring 8. are doing. According to the method of the present invention, the update operation of the control panel in such a system is performed by the following procedure according to the flowchart of FIG. (Step 1: S1) First, the relay panel 3 is prepared, and two relay cables 9 are wired from the relay panel 3 to the existing control panel 1. Of the two contacts a and b of the relay board 3, a is closed and b is open, and one end of each is connected to each other. The two relay cables 9 are connected to both terminals of the contact a. (Step 2: S2) The two relay cables 9 are directly sleeve-connected to the wiring 8 at intervals. At this time, the existing control panel 1 may be in operation. (Step 3: S3) The connection between the two straight sleeve connection portions 7 is cut. As a result, the control device connects to the I / O 4 of the existing control panel 1 via the wiring 8, the direct sleeve connecting portion 7, the relay cable 9, the a contact of the relay panel 3, the relay cable 9, and the direct sleeve connecting portion 7 in this order. Connected and equipment remains operational. (Step 4: S4) The existing control panel 1 is relocated to the evacuation area with the wiring of step 3 kept. (Step 5: S5) New control panel 2 equipped with terminal block 5
Is installed at the place where the existing existing control panel 1 was located. The terminal block 5 has three terminals including a central terminal, and has a central terminal and two remaining terminals.
One of the terminals is connected. The center terminal is connected to I / O6. (Step 6: S6) A terminal not connected to the center terminal of the terminal block 5 is connected to the control device, and a terminal connected to the center terminal of the terminal block 5 is connected to the contact b of the relay board 3 via the relay cable 9. Connecting. Since the contact b is open, the I / O 6 of the new control panel 2 is not connected to the control device. (Step 7: S7) Contact b is closed. by this,
The new control panel 2 is connected to the control device via the relay panel 3 in the same manner as the existing control panel 1. In this state, the operation of the newly-installed control panel 2 is checked, and adjustment work is performed in comparison with the existing control panel 1. (Step 8: S8) The terminal block 5 is switched. Thereby, the I / O 6 of the newly installed control panel 2 is connected to the control device via the wiring 8 and the terminal block 5 without passing through the relay panel 3 and the relay cable 9. In this state, the final check of the operation of the new control panel 2 is performed. If there is a problem, make a final adjustment. (Step 9: S9) The contact b of the relay panel 5 is opened, and the existing control panel 1, the relay panel 3, and the relay cable 9 are appropriately removed.
Since the existing control panel 1 is replaced with the new control panel 2 according to such a procedure, if the work can be performed swiftly, the replacement work can proceed without stopping the operation of the equipment, and the operation of the equipment can be temporarily stopped. Even if there is, only the time when each wiring is connected and the time when each wiring is disconnected can be minimized, and the time required for identification below can be minimized.

[0007]

As described above, according to the present invention, the downtime of equipment can be minimized as compared with the prior art.
Equipment replacement work can also be minimized. In addition, since the test is performed in accordance with the actual equipment, the test can be made reliable. Therefore, there is an effect that the cost for renewing the equipment can be significantly reduced, and the practicability can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing the progress of wiring conditions of equipment to which the method of the present invention is applied.

FIG. 2 is a flowchart 1 showing the procedure of the method of the present invention.
Existing control panel 2 New control panel 3 Relay panel 4, 6 I / O 5 Terminal block 7 Straight sleeve connection part 8 Wiring 9 Relay cable Reference number 12541

Claims (1)

[Claims] An operating system comprising an existing control panel, a control device controlled by the existing control panel, and a number of wires connecting the existing control panel and the control device, comprises the following steps: A control panel updating method, wherein the existing control panel is replaced with a new control panel. Step 1: For each wiring, prepare a relay panel having two contacts, a closed a contact and an open b contact, and guide two relay cables from both ends of the closed a contact to the existing control panel. Step 2: The ends of the two relay cables are connected directly to the wiring by a direct sleeve in a live state with a space between them. Step 3: The wiring between the two places connected by the direct sleeve is cut in a live state. Step 4: The existing control panel is moved to an evacuation area in a live state. Step 5: Install a new control panel equipped with a terminal block in a place where the existing control panel was located. Step 6: One terminal of the terminal block is connected to the control device, and the other terminal is connected to one end of the a contact and connected to the other end of the b contact connected to the control device. Step 7: Close the b-contact of the relay board and connect the control device to the newly installed control board. Step 8: The connection of the terminal block is switched, and the control device and the newly installed control panel are directly connected. Step 9: removing the relay cable and removing the existing control panel and the relay panel.