WO2022149292A1 - Dispositif auxiliaire - Google Patents

Dispositif auxiliaire Download PDF

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Publication number
WO2022149292A1
WO2022149292A1 PCT/JP2021/008323 JP2021008323W WO2022149292A1 WO 2022149292 A1 WO2022149292 A1 WO 2022149292A1 JP 2021008323 W JP2021008323 W JP 2021008323W WO 2022149292 A1 WO2022149292 A1 WO 2022149292A1
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WO
WIPO (PCT)
Prior art keywords
unit
auxiliary device
power supply
connection
power
Prior art date
Application number
PCT/JP2021/008323
Other languages
English (en)
Japanese (ja)
Inventor
誠治 岡
Original Assignee
オムロン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オムロン株式会社 filed Critical オムロン株式会社
Publication of WO2022149292A1 publication Critical patent/WO2022149292A1/fr

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts

Definitions

  • the present invention relates to an auxiliary device connected to a PLC.
  • Patent Document 1 discloses a PLC system capable of determining a power supply state in each unit constituting the PLC system.
  • the power supply unit that constitutes the PLC uses parts such as electrolytic capacitors that have a relatively short life, and often needs to be replaced earlier than other units.
  • parts such as electrolytic capacitors that have a relatively short life, and often needs to be replaced earlier than other units.
  • the power supply unit cannot be replaced unless the system including the PLC is stopped even when it is desirable to operate the system continuously.
  • One aspect of the present invention has been made in view of the above problems, and an object thereof is to enable replacement of a power supply unit without stopping a system including a PLC.
  • the present invention adopts the following configuration in order to solve the above-mentioned problems.
  • the auxiliary device is an auxiliary device as the unit in which a plurality of units are connected to form a programmable logic controller, and the auxiliary device is different.
  • the auxiliary device When connected to the unit, the auxiliary device is electrically connected to the first connection portion that transmits power to and from the first unit, which is the other unit, and the first connection portion.
  • a second connection unit that transmits power to and from the second unit, which is the other unit when connected to yet another second unit, and a third connection for receiving power from the outside. It is provided with a third connection portion capable of supplying the received power toward the first connection portion and the second connection portion.
  • the power supply unit can be replaced without stopping the system including the PLC.
  • An example of an application scene of the auxiliary device according to the first embodiment is schematically illustrated.
  • An example of the hardware configuration of the auxiliary device according to the first embodiment is schematically illustrated. It is a flowchart which illustrates the procedure when the administrator replaces a power supply unit.
  • An example of the hardware configuration of the auxiliary device according to the second embodiment is schematically illustrated.
  • An example of the application scene of the auxiliary device according to the modified example is schematically illustrated.
  • An example of the application scene of the auxiliary device according to the modified example is schematically illustrated.
  • An example of the application scene of the auxiliary device according to the modified example is schematically illustrated.
  • An example of the application scene of the auxiliary device according to the modified example is schematically illustrated.
  • FIG. 1 schematically illustrates an example of an application scene of the auxiliary device 10 according to the present embodiment. Further, FIG. 1 shows the entire PLC1 to which the auxiliary device 10 is connected.
  • FIG. 2 schematically illustrates an example of the hardware configuration of the auxiliary device 10 according to the present embodiment.
  • the PLC 1 includes a power supply unit 12, an auxiliary device 10, a CPU unit 14, an I / O control unit 16, one or a plurality of constituent units 18, and an end cover (end plate) 20.
  • the constituent unit 18 includes, for example, a basic I / O unit, a high-performance I / O unit, and a CPU high-performance unit. Further, the adjacent units and the like are connected to each other to transmit electric power and signals.
  • the auxiliary device 10 is an auxiliary device as the unit in which a plurality of units are connected to form a PLC, and when the power supply unit 12 is replaced or the like, the electric power received from the outside such as the external power supply 32 is received. It is a device for making it possible to supply to other units of PLC1.
  • the auxiliary device 10 is configured to be connected between the power supply unit 12 and the CPU unit 14 as shown in FIG. In the above configuration, when the PLC 1 operates with the power of the power supply unit 12, the auxiliary device 10 supplies the power supplied from the power supply unit 12 to the adjacent CPU unit 14.
  • the auxiliary device 10 is a first connection unit 22 that transmits power to and from the first unit, which is the other unit, when the auxiliary device 10 is connected to another unit. And when it is electrically connected to the first connection unit 22 and the auxiliary device 10 is connected to yet another second unit, power transmission with the second unit which is the still another unit.
  • a unit 26 is provided.
  • a PLC Programmable Logic Controller
  • the auxiliary device 10 is connected between the first unit and the second unit in PLC1 via the connection portions 34 and 36 of the respective units.
  • the first unit will be described as the power supply unit 12 and the second unit will be the CPU unit 14, but the present invention is not limited to this, and the auxiliary device 10 is connected between the other units, and the first unit is used.
  • the unit may be the CPU unit 14, and the second unit may be the I / O control unit 16.
  • the unit closer to the power supply unit 12 will be referred to as the first unit, and the unit farther from the power supply unit 12 will be referred to as the second unit.
  • the auxiliary device 10 includes a first connection unit 22, a second connection unit 24, a third connection unit 26, a fourth connection unit 28, and a fifth connection unit 30.
  • the first connection unit 22 is a connector for transmitting power to and from the first unit when the auxiliary device 10 is connected to the first unit.
  • the second connection unit 24 is a connector for transmitting power to and from the second unit when the auxiliary device 10 is connected to the second unit.
  • the first connection portion 22 and the second connection portion 24 are electrically connected to each other. Therefore, when the first unit and the second unit are connected to both sides of the auxiliary device 10, power can be transmitted between the first unit and the second unit.
  • the second connection unit 24 supplies the power supplied from the first connection unit 22 or the third connection unit 26 to the CPU unit 14 when it is connected to the CPU unit 14.
  • the third connection unit 26 receives the electric power supplied from the outside. Further, the third connection unit 26 may supply electric power received from the outside toward at least one of the first connection unit 22 and the second connection unit 24. Further, for example, an external power supply 32 different from the power supply unit 12 constituting the PLC 1 supplies electric power to the third connection unit 26.
  • the auxiliary device 10 supplies the power supplied from the first unit to the first connection unit 22 to the second unit via the second connection unit 24. can.
  • the power supplied from the external power supply 32 to the third connection portion 26 is connected to the second connection.
  • the power can be supplied to the first unit via the first connection unit 22.
  • the first connection unit 22 supplies the power received from the first unit toward the second connection unit 24, and the third connection unit 22.
  • the 26 does not accept the power from the outside as being consumed in the PLC 1, and when the power supply unit 12 is not connected in the PLC 1, the third connection portion 26 is the first connection portion 22 and the second connection. The electric power received from the outside can be supplied to the unit 24.
  • the signal line 38 in FIG. 2 indicates a signal transmission path indicating an address or other data. That is, signals are transmitted between the units constituting the PLC 1 via the signal line 38.
  • the fourth connection unit 28 is a connector for transmitting and receiving signals to and from the first unit when the auxiliary device 10 is connected to the first unit and the second unit.
  • the fifth connection unit 30 is a connector for transmitting and receiving signals to and from the second unit at the above time.
  • the fourth connection portion 28 may be realized as a connector integrated with the first connection portion 22, or may be realized as another connector.
  • the fifth connection portion 30 may be realized as a connector integrated with the second connection portion 24, or may be realized as another connector.
  • the CPU unit 14 controls the connection unit 36, the connection unit 37 connected to the adjacent I / O control unit 16, the DC transformer unit 40 that changes the voltage of DC power, and the entire CPU unit 14.
  • the control circuit 42 is provided.
  • the DC transformer unit 40 appropriately transforms the supplied DC power according to the specifications of the control circuit, and then supplies the supplied DC power to the control circuit 42.
  • FIG. 3 is a flowchart showing the above procedure example. Further, at the start of the procedure shown in the flowchart of FIG. 3, the first unit is connected to the first connection portion 22 of the auxiliary device 10, the second unit is connected to the second connection portion 24, and the PLC1 is connected. It is assumed that it is in operation.
  • the processing procedure described below is only an example, and each processing may be changed as much as possible. Further, with respect to the processing procedure described below, steps can be omitted, replaced, and added as appropriate according to the embodiment. The same applies to the subsequent embodiments.
  • Step S101 the administrator connects the external power supply 32 that outputs a predetermined voltage to the third connection unit 26 of the auxiliary device 10, and starts the power supply from the external power supply 32 to the PLC1.
  • step S102 the administrator stops the power supply from the power supply unit 12 to the PLC 1 by operating the power supply unit 12.
  • step S103 the administrator removes the power supply unit 12 from the PLC1.
  • Step S104 the administrator attaches a new power supply unit 12 to the PLC1.
  • step S105 the administrator starts the power supply from the power supply unit 12 to the PLC1 by operating the PLC1.
  • Step S106 the administrator stops the power supply from the external power supply 32 to the PLC 1 by operating the external power supply 32.
  • step S107 the administrator removes the external power supply 32 from the third connection portion 26.
  • FIG. 2 A second embodiment of the present invention will be described below.
  • the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and duplicate explanations will not be repeated.
  • monitoring the quality of electric power means continuously evaluating whether or not the quality of electric power of interest meets a certain standard for operating the PLC1.
  • FIG. 4 schematically illustrates an example of the hardware configuration of the auxiliary device 10 according to the present embodiment.
  • the auxiliary device 10 is configured to further include a power supply monitoring unit 44 as compared with the auxiliary device 10 shown in FIG.
  • the power supply monitoring unit 44 monitors the quality of the power received from the third connection unit 26.
  • the power supply monitoring unit 44 monitors the quality of electric power, for example, by continuously evaluating the voltage of the electric power supplied from the external power source 32.
  • the power supply monitoring unit 44 determines that the quality of the electric power received from the third connection unit 26 does not satisfy the standard, for example, the power supply monitoring unit 44 transmits information indicating that fact to the CPU unit 14 via the signal line 38 to the CPU.
  • the unit 14 may be configured to perform a predetermined process.
  • the power supply monitoring unit 44 transfers the third connection unit 26. Monitor the quality of power received from.
  • the power supply monitoring unit 44 transmits information indicating that the quality of the electric power received from the outside is out of the standard value to the CPU unit 14 via the signal line 38 when the quality of the electric power does not meet a certain standard. do.
  • the CPU unit 14 performs a process of outputting the above information in order to notify the administrator.
  • the auxiliary device 10 may be provided with a notification function such as a warning lamp to warn that the quality of the electric power received from the outside is out of the reference value.
  • the administrator is supplied to the third connection unit 26 before switching the power supply source in the PLC 1 from the power supply unit 12 to the external power supply 32. It is possible to grasp whether the quality of power meets the criteria for operating the PLC1. When the power quality is out of the reference value, the power supply source in the PLC 1 is not switched from the power supply unit 12 to the external power supply 32, thereby contributing to stable power supply.
  • the quality of electric power may be, for example, a state in which noise is mixed.
  • the external power supply 32 containing a lot of noise is connected to the third connection portion 26 and the electric power is supplied, there is a possibility that the PLC 1 may fail.
  • the auxiliary device 10 of the second embodiment such a situation. Can be suppressed.
  • the position where the auxiliary device 10 is connected in the PLC 1 is not limited to the position between the power supply unit 12 and the CPU unit 14.
  • 5 to 7 schematically illustrate an example of an application scene of the auxiliary device 10 connected to each of the following positions.
  • -Between the CPU unit 14 and the I / O control unit 16 (FIG. 5)
  • -Between the constituent unit (I / O unit, etc.) 18 and the other constituent units 18 (FIG. 6)
  • the auxiliary device 10 may have a configuration in which the first connection portion 22 is connected to the connection portion of the terminal I / O unit instead of the end cover 20 so that power can be supplied to the PLC 1.
  • FIG. 5 shows that the first unit may be a (first) power supply unit and the second unit may be a CPU unit.
  • FIG. 6 shows that the first unit may be a CPU unit and the second unit may be an I / O control unit.
  • FIG. 7 shows that the first unit may be the first constituent unit and the second unit may be the second constituent unit.
  • connection portions in which one auxiliary device 10 receives electric power from the outside is not limited to a single number, and may be a plurality of connections.
  • the external power supply 32 may be configured to be connected to an AC power supply and output a DC voltage converted from the AC voltage, or may be configured to be realized as a mobile battery connected by a USB terminal or the like. good.
  • the auxiliary device (10) is an auxiliary device as the unit in which a plurality of units are connected to form a programmable logic controller, and the auxiliary device is connected to another unit.
  • a first connection unit (22) that transmits power to and from the first unit, which is the other unit, and the first connection unit are electrically connected
  • the auxiliary device is yet another.
  • a second connection unit (24) that transmits power to and from the second unit, which is another unit when connected to the second unit, and a third connection for receiving power from the outside.
  • the unit includes a third connection unit (26) capable of supplying the received power toward the first connection unit and the second connection unit.
  • the first connection portion and the second connection portion realize the transmission of electric power between the first unit and the second unit, and further, the electric power received from the outside through the third connection portion is the second. It can be supplied to at least one of the first unit and the second unit. This makes it possible to replace the power supply unit without stopping the system including the PLC.
  • the auxiliary device may further include a power supply monitoring unit (44) that monitors the quality of the power received from the third connection unit.
  • a power supply monitoring unit (44) that monitors the quality of the power received from the third connection unit.
  • the first unit may be a power supply unit (12), and the second unit may be a CPU unit (14). According to this configuration, it is possible to realize the transmission of electric power between the power supply unit and the CPU unit, and then supply the electric power received from the outside to the CPU unit via the third connection unit.
  • the first unit may be a CPU unit (14), and the second unit may be an I / O control unit (16).
  • the electric power received from the outside via the third connection unit is further transferred to the CPU unit and the I / O control unit. Can be supplied.
  • the first unit may be the first constituent unit (18), and the second unit may be the second constituent unit (18).
  • the electric power received from the outside through the third connecting portion is further transferred to the first constituent unit and the first constituent unit and the second constituent unit. It can be supplied to at least one of the second constituent units.
  • a fourth connection unit (a fourth connection unit) that exchanges signals with the first unit. 28) and a fifth connection unit (30) for exchanging signals between the second unit and the second unit are further provided to transmit signals between the first unit and the second unit. You may mediate. According to this configuration, for example, a signal can be transmitted in the entire PLC starting from the CPU unit.
  • the control block (particularly, the power supply monitoring unit 44) of the auxiliary device 10 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software.
  • the auxiliary device 10 includes a computer that executes instructions of a program that is software that realizes each function.
  • the computer includes, for example, one or more processors and a computer-readable recording medium that stores the program. Then, in the computer, the processor reads the program from the recording medium and executes it, thereby achieving the object of the present invention.
  • a CPU Central Processing Unit
  • the recording medium a “non-temporary tangible medium”, for example, a ROM (Read Only Memory) or the like, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used.
  • a RAM RandomAccessMemory
  • the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. It should be noted that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the above program is embodied by electronic transmission.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)

Abstract

La présente invention rend possible un remplacement d'une unité d'alimentation électrique sans arrêter un système contenant un PLC. Le présent dispositif auxiliaire (10) sert de dispositif auxiliaire d'une pluralité d'unités qui sont connectées pour former un contrôleur logique programmable, le dispositif auxiliaire comprenant : une première partie de connexion (22) qui, lorsque le dispositif auxiliaire est connecté à une unité séparée, effectue une transmission de puissance avec une première unité, qui est l'unité séparée; une deuxième partie de connexion (24) qui est électriquement connectée à la première partie de connexion (22) et qui, lorsque le dispositif auxiliaire (10) est connecté à une autre seconde unité séparée différente, effectue une transmission de puissance avec une seconde unité, qui est l'autre unité séparée différente; et une troisième partie de connexion (26) destinée à recevoir de l'énergie de l'extérieur, la troisième partie de connexion (26) pouvant fournir la puissance reçue à la première partie de connexion (22) et à la deuxième partie de connexion (24).
PCT/JP2021/008323 2021-01-08 2021-03-04 Dispositif auxiliaire WO2022149292A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021002384A JP2022107434A (ja) 2021-01-08 2021-01-08 補助装置
JP2021-002384 2021-01-08

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WO2022149292A1 true WO2022149292A1 (fr) 2022-07-14

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017167919A (ja) * 2016-03-17 2017-09-21 日本電気株式会社 サーバ装置、電力供給制御方法、プログラム、外部電源供給装置、サーバシステム
JP2019159702A (ja) * 2018-03-12 2019-09-19 オムロン株式会社 制御装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017167919A (ja) * 2016-03-17 2017-09-21 日本電気株式会社 サーバ装置、電力供給制御方法、プログラム、外部電源供給装置、サーバシステム
JP2019159702A (ja) * 2018-03-12 2019-09-19 オムロン株式会社 制御装置

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