JP2012039712A - Inverter device, peripheral equipment of the same, and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inverter device that can set and confirm information related to the inverter device without requiring to be unpacked or connected to a power supply, and that has an excellent convenience, and to provide a peripheral equipment of the same, and a package.SOLUTION: An inverter device having an inverter main circuit for driving a load, has: an antenna for sending and receiving an electric wave; and a storage circuit part electrically connected with the antenna. The storage circuit part is non-volatile storage means for storing information, and operates using the electric wave received at the antenna as an energy source. The antenna is arranged in an antenna arrangement part provided on a position that is not on the same plane as a substrate surface on which the storage circuit part is mounted in the inverter device.

Description

  The present embodiment relates to an inverter device, its peripheral devices, and a package.

  Conventionally, an inverter device includes, for example, an inverter circuit (main circuit) for driving an induction motor at a variable speed, a control unit for controlling the inverter circuit, and the like, and includes an acceleration time, a deceleration time, an upper limit frequency, and a lower limit. Various parameter values such as frequency can be set.

  In this respect, the control power source of the inverter device is generated from the commercial power source by the voltage changing means in the inverter device. For example, the capacitor is charged with a DC voltage obtained by rectifying the commercial power source voltage, and the capacitor is charged. This voltage can be obtained by controlling the on / off of the voltage with a transistor and stepping down the voltage by the on / off control via a power transformer (see, for example, Patent Document 1). Thus, by supplying the control power to each control unit, the control unit operates according to the control program stored in advance, and the parameters stored in the memory can be read and written.

  Since the control power supply is generated from the commercial power supply in the inverter device as described above, when setting parameters or the like, the commercial power supply to the inverter main body is not required even if the inverter circuit need not be driven. Connection is required. Therefore, when a commercial power source cannot be connected to the inverter device, it is conceivable to separately supply a control power source from the outside in order to set parameters or the like.

Japanese Patent No. 4335208

  However, in a situation where not only commercial power but also control power from the outside cannot be supplied to the inverter device, information such as parameters relating to inverter control cannot be viewed or set. Further, when the inverter device is packed, it is necessary to perform connection work to the commercial power source or the control power source after opening the package.

  In view of this, there is provided an inverter device excellent in convenience, its peripheral devices, and a package that can set and check information relating to the inverter device without requiring unpacking or connection to a power source.

  The inverter device of the present embodiment includes an inverter main circuit that drives a load, and includes an antenna that transmits and receives radio waves and a memory circuit unit that is electrically connected to the antenna. The storage circuit unit is a nonvolatile storage unit that stores information, and operates using radio waves received by the antenna as an energy source. The antenna is arranged in an antenna arrangement portion provided at a position not on the same plane as the surface of the substrate on which the memory circuit portion is mounted in the inverter device.

The schematic diagram for demonstrating the internal structure of the inverter apparatus which shows 1st Embodiment Schematic diagram for explaining the internal structure of peripheral devices Diagram showing the overall configuration of the inverter control system Schematic diagram of the package shown with the inverter device packed FIG. 1 equivalent view showing the second embodiment FIG. 1 equivalent diagram showing the third embodiment FIG. 1 equivalent diagram showing the fourth embodiment

<First Embodiment>
Hereinafter, this embodiment will be described with reference to FIGS. As shown in FIG. 3, the inverter device 1 is supplied with power from, for example, an AC power supply device 2 and drives the induction motor 3 based on the power supply (commercial power supply). The parameter writer 4 is a peripheral device of the inverter device 1, and its communication unit 5 b is connected to the communication unit 5 a of the inverter device 1 via the serial communication line 5. As will be described in detail later, the parameter writer 4 performs communication via the serial communication line 5 and the communication units 5a and 5b, which are communication means, so as to read and write information related to the inverter device 1. It has become.

  As schematically shown in FIG. 1, the inverter device 1 includes an inverter circuit 10 configured by connecting switching elements such as MOSFETs and IGBTs in a three-phase bridge, a control unit 11 that controls the inverter circuit 10, and a nonvolatile memory The memory circuit unit 12 and the antenna 18 etc. are provided as a sex storage unit. These circuits and antennas 18 are arranged on a plurality of substrates (for example, three printed wiring boards 14a, 14b, and 14c; hereinafter simply referred to as substrates) housed in the casing 13 of the inverter device 1.

  Specifically, in FIG. 1, an electronic component constituting the inverter circuit 10 and a switching element such as the IGBT are mounted on the substrate 14 c disposed on the lower side (the innermost side) in the housing 13. . The inverter circuit 10 is an inverter main circuit that drives a load such as the induction motor 3. The inverter circuit 10 is electrically connected to the control unit 11 through a control line 16 provided between the substrates 14b and 14c.

  A substrate 14b disposed in the middle as a substrate separate from the substrate 14c is provided with a control unit 11, a storage circuit unit 12, and the communication unit 5a (not shown in FIG. 1), and for a user interface. The electronic parts are arranged. The control unit 11 includes a microcomputer, and includes a CPU, a flash memory, a RAM, and the like (all not shown). The flash memory of the control unit 11 stores a control program or the like that is executed by the CPU and controls the inverter circuit 10. The RAM is used as a work area when the CPU executes processing.

  The control unit 11 communicates with the parameter writer 4 side using the communication protocol via the communication unit 5a. Further, in the inverter device 1, for example, control power that is stepped down to 5V by a voltage changing unit (not shown) is supplied to the control unit 11 and the like. The control power supply supplied by the voltage changing means is generated based on the commercial power supply in the inverter device 1.

  In the substrate 14b, the storage circuit unit 12 is connected to the control unit 11 by wiring 17 (circuit pattern). The storage circuit unit 12 includes, for example, an EEPROM (Electrically Erasable Programmable ROM) 12a as a non-volatile storage unit, a control circuit (not shown), a wireless communication unit, and the like so that the radio wave received by the antenna 18 operates as an energy source. It is configured. That is, the storage circuit unit 12 receives a radio wave transmitted from an external processing device (reader / writer device) (not shown) by the antenna 18 and obtains power and various information from the radio wave regardless of the control power source. It is like that. When the data signal included in the radio wave received by the antenna 18 is transmitted via the wiring 18a, the wireless communication unit performs a process of demodulating the data signal into the original data. The control circuit of the storage circuit unit 12 rewrites or writes the storage contents of the EEPROM 12a in accordance with the contents of the data (instruction data from the external processing device). Further, the control circuit performs control for transmitting the data stored in the EEPROM 12a based on the instruction data from the external processing device to the wireless communication unit, and the data taken out from the EEPROM 12a is The signal is modulated into a predetermined frequency band by the wireless communication unit, and transmitted from the antenna 18 to the external processing device side via the wiring 18a.

  The EEPROM 12a stores various parameters such as manufacturer setting information set by the manufacturer, user setting information set by the user, manufacturing history, operation history, and the like. That is, as information stored in the EEPROM 12a, for example, control parameter data such as acceleration time and deceleration time, upper limit frequency, lower limit frequency, and the like related to variable speed driving of the induction motor 3, the series format of the inverter device 1, and the control program Version information etc. are included.

  In FIG. 1, an antenna 18 is provided on a substrate 14 a arranged on the upper side (front side) in the housing 13. The antenna 18 has a coil shape (loop shape) for transmitting and receiving radio waves, and is connected to the wireless communication unit of the memory circuit unit 12 via a wiring 18a. Although illustration is omitted, an operation / display unit having a switch unit and a display unit is provided on the front surface portion 13a of the casing 13 in the inverter device 1, and the substrate 14a is positioned near the front surface portion 13a. Be placed. As a result, the substrate 14a (strictly, a part on the substrate 14a) is located in a position that is not on the same plane as the surface S of the substrate 14b on which the antenna 18 is disposed in the housing 13 and the memory circuit unit 12 is mounted. The antenna arrangement part 14ap is configured.

  On the other hand, as shown in FIG. 2, the parameter writer 4 is different from the inverter device 1 in that the inverter circuit 10 and the substrate 14 c are not provided, but the other configuration is the same as that of the inverter device 1. The parameter writer 4 as a peripheral device for the inverter device 1 will be briefly described below.

  The parameter writer 4 includes a control unit 21, a storage circuit unit 22 as a nonvolatile storage unit, an antenna 28, and the like. In the parameter writer 4, the control unit 21 reads and writes various information (data) from the inverter device 1 via the communication unit 5b. Such information is stored in a storage unit such as a flash memory included in the control unit 21, and the parameter writer 4 is configured as a data copying unit for the inverter device 1.

  The casing 23 of the parameter writer 4 is provided with an operation / display unit on its front surface 23a, and a plurality of substrates (for example, two substrates 24a and 24b) are accommodated therein. A control unit 21, a storage circuit unit 22, the communication unit 5 b, and the like are provided on the back side substrate 24 b in the housing 23. The control unit 21 includes a microcomputer, and includes a CPU, a flash memory, a RAM, and the like (all not shown). The flash memory of the control unit 21 stores a control program and the like that are executed by the CPU and perform operation input and display control in the operation / display unit of the front surface unit 23a. In the parameter writer 4, for example, similarly to the inverter device 1 side, a control power source that is stepped down to 5 V from the commercial power source is supplied to the control unit 21 and the like via a voltage changing unit.

  In the substrate 24b, the storage circuit unit 22 is connected to the control unit 21 by wiring 27 (circuit pattern). The storage circuit unit 22 includes, for example, an EEPROM 22a as a nonvolatile storage unit, a control circuit (not shown), a wireless communication unit, and the like, similar to the storage circuit unit 12, and operates by using radio waves received by the antenna 28 as an energy source. Regardless of the control power supply, power and various information are obtained from the radio waves.

  A substrate 24a (a part of) the substrate 24a disposed on the front side in the housing 23 of the parameter writer 4 is an antenna arrangement portion 24ap on which a loop-shaped antenna 28 is provided. The antenna 28 is connected to the wireless communication unit of the memory circuit unit 22 through the wiring 28a.

  Here, FIG. 4 schematically shows an example of a state in which the inverter device 1 is packed. The packaging body 30 is made of paper having a plate shape such as cardboard, and is a packaging box having a rectangular box shape as shown in FIG. In this package 30, the inverter device 1 is accommodated in a predetermined direction, for example, such that the antenna 18 side is the front side (upward in FIG. 4). In this case, the display unit 30 a is printed on the upper surface side of the package 30 at a position near the antenna 18. For example, the display unit 30a is drawn in a loop shape along the antenna 18 in the package 30 so that the position and directivity (direction and shape) of the antenna 18 can be recognized from the outside.

  Although illustration is omitted, the parameter writer 4 is also packed by the same packing body as the packing body 30. That is, the package of the parameter writer 4 has a rectangular box shape, and accommodates the parameter writer 4 so that the antenna 28 side is on the upper side, for example. Further, a display portion along the antenna 28 in the package is printed on the package of the parameter writer 4 so that the position and directivity of the antenna 28 can be recognized from the outside.

Next, the operation of this embodiment will be described.
Both the inverter device 1 and the parameter writer 4 are activated when the power is turned on. By this activation, the inverter device 1 drives the induction motor 3, or information is exchanged between the inverter device 1 and the parameter writer 4 via the serial communication line 5 or the like.

  In this regard, for example, in a state where the inverter device 1 and the parameter writer 4 are packaged before shipping, or in a state where connection to a commercial power source is not possible, the driving of the induction motor 3 in the inverter device 1 and the inverter device 1 and the parameter writer 4 are performed. It is not possible to exchange information with.

  However, since the inverter device 1 and the parameter writer 4 of the present embodiment are configured to include the memory circuit units 12 and 22 and the antennas 18 and 28, the parameters can be obtained even if the power is not turned on. Can be set. Therefore, for example, in the state where the inverter device 1 is packed in the packing body 30 in the warehouse, the parameter data can be transmitted by radio waves using the external processing device in order to rewrite the upper limit frequency, for example. In this case, the position and directivity of the antenna 18 can be grasped using the display unit 30 a in the package 30 as an index, and radio waves can be reliably transmitted from the external processing device to the antenna 18.

  Thereby, on the inverter device 1 side, the power is obtained from the radio wave received by the antenna 18 and the memory circuit unit 12 is activated, and the upper limit frequency stored in the EEPROM 12a is overwritten and updated based on the instruction included in the radio wave. To do. In addition, the storage circuit unit 12 can transmit various information such as parameters stored in the EEPROM 12 a from the antenna 18 to the external processing device side based on an instruction included in the radio wave received by the antenna 18.

  Also in the parameter writer 4, information can be exchanged using the external processing device without being connected to a commercial power source while being packed in the package. Briefly, the parameter data is transmitted wirelessly in order to rewrite the control parameter from the external processing device. In this case, as with the inverter device 1, the position and directivity of the antenna 28 can be grasped by the display unit in the package, and radio waves can be reliably transmitted from the external processing device to the antenna 28. On the parameter writer 4 side, the storage circuit unit 22 is activated by obtaining power from the radio wave received by the antenna 28, and overwrites various information such as parameters stored in the EEPROM 22a based on an instruction included in the radio wave. The information stored in the EEPROM 12a can be transmitted from the antenna 18 to the external processing apparatus.

  The inverter device 1 described above includes an antenna 18 that transmits and receives radio waves, and a storage circuit unit 12 that is a non-volatile storage unit that stores information and operates using the radio waves received by the antenna 18 as an energy source. Accordingly, since the memory circuit unit 12 is activated by sending a radio wave from the external processing device to the antenna 18, information related to inverter control is set without unpacking the packaging body 30 and without connecting to a commercial power source. Or you can browse. That is, the setting or browsing of the information related to the inverter control can be performed very easily regardless of the location, regardless of the presence or absence of packaging.

  Further, in the inverter device 1, the antenna arrangement portion 14 ap where the antenna 18 is arranged is provided at a position that is not on the same plane as the surface S of the substrate 14 b on which the memory circuit portion 12 is mounted. According to this, the antenna 18 can be arranged using the surplus space in the housing 13 without causing an increase in the size of the substrate 14b on which the memory circuit unit 12 is mounted, thereby increasing the size of the inverter device 1. Can be suppressed.

  The parameter writer 4 that is a peripheral device that exchanges information with the inverter device 1 via the communication means 5, 5 a, 5 b also includes the antenna 28, the storage circuit unit 22, and the antenna arrangement unit 24 ap, and thus the inverter described above. The same effect as the apparatus 1 is produced.

  The package 30 has a display unit 30 a on its surface (hymen) that displays the directivity and position of the antenna 18 of the inverter device 1 in the package 30. Accordingly, when setting or browsing the information using an external processing device, the external processing device can be used at an appropriate operation position using the display unit 30a as an index, and data can be exchanged reliably. . Moreover, since the package body of the parameter writer 4 also has a display unit, the same effects as the package body 30 are achieved.

Second Embodiment
FIG. 5 shows a second embodiment. The same parts as those already described are denoted by the same reference numerals and the description thereof is omitted, and different points will be described below.

  An operation / display unit 33 as shown in FIG. 5 is provided on the front surface 13 a of the housing 13 in the inverter device 1. Although not shown in detail, the operation / display unit 33 includes, for example, a membrane switch as a switch means constituting the switch group. That is, the membrane switch is configured to have a contact portion (not shown) that conducts by pressing operation on the opposing sheets 34a, 34b (or film), and the lead line 34c led out from the membrane switch is It is connected to the substrate 14b side. The antenna 18 of the present embodiment is disposed, for example, on the sheet 34b on the back side of the membrane switch, and is connected to the memory circuit unit 12 using the lead wire 34c (via the lead wire 34c). As described above, by configuring the antenna arrangement portion 33p using a part of the membrane switch on the back side of the operation / display portion 33, the substrate for the antenna 18 and the like can be omitted.

Although not shown, the operation / display unit and the membrane switch are also provided on the front surface 23 a of the housing 23 of the parameter writer 4 in the same manner as the operation / display unit 33. The antenna 28 of the parameter writer 4 is disposed, for example, on the sheet of the membrane switch, and is connected to the memory circuit unit 22 using the lead wire.
Therefore, according to the inverter device 1 and the parameter writer 4 of the second embodiment, a more compact and simple configuration can be achieved, and the same effect as that of the first embodiment can be obtained.

<Third Embodiment>
FIG. 6 shows a third embodiment, and the same parts as those already described are denoted by the same reference numerals and the description thereof is omitted, and different points will be described.

  In the casing 13 of the inverter device 1, as shown in FIG. 6, a shield body 35 is disposed between the substrate 14b and the substrate 14c. As the shield body 35, a metal plate or a metal foil can be used, and a metal mesh can be used. In this case, the shield body 35 is located between the antenna 18 ′ and the inverter circuit 10 of the third embodiment, and at least the antenna 18 ′ side in order to reduce noise and surge caused by the switching operation of the inverter circuit 10. It is formed in a dimensional shape (a dimensional shape that covers the entire substrate 14b) that shields radio waves from. The shielding action of the shield body 35 can prevent surge power from being generated from the radio wave received by the antenna 18 based on the switching operation of the inverter circuit 10, and also prevents malfunction and damage of the memory circuit unit 22. be able to. The shield body 35 can also be applied to the inverter device 1 of FIG. 1 described in the first embodiment and the inverter device 1 of other embodiments, and the arrangement position may be between the substrate 14a and the substrate 14b. .

  As shown in FIG. 6, the first connector 37a is mounted on the substrate 14a of the third embodiment, and the second connector 37b is mounted on the substrate 14b. The pair of connectors 37a and 37b correspond to a board-to-board connector 37 for electrically connecting the board 14a to the board 14b. As a result, the board 14a located on the near side is detachably attached to the second connector 37b (board 14b) by the first connector 37a, so that the boards 14a and 14b are in a so-called two-layered state. Become.

  The antenna 18 'includes an auxiliary loop part 38a on the board 14a and an electrical connection part in the board-to-board connector 37 (a part including pins of the connector 37 schematically shown by reference numerals 38b and 38b in FIG. 6), The wirings 38c and 38c (circuit patterns) on the substrate 14b are configured to form a loop. That is, the circuit pattern of the board-to-board connector 37 and the board 14b is used to keep the size of the actual antenna arrangement part 14ap ′ (auxiliary loop part 38a) on the board 14a as small as possible. According to this configuration, the auxiliary loop portion 38a can be easily detached together with the board 14a by the board-to-board connector 37. Accordingly, when the information is not exchanged using the external processing device or when the drive control of the induction motor 3 is performed, the malfunction of the memory circuit unit 22 based on the switching operation described above by removing the substrate 14a. In addition, it is possible to reliably prevent damage to the memory circuit unit 22 from external radio waves and the like. Even when the substrate 14a is not removed, the shield body 35 can prevent the memory circuit unit 22 from malfunctioning or being damaged.

  Although not shown in the figure, the antenna of the parameter writer 4 is also provided with an auxiliary loop on the substrate 24a in the same manner as the antenna 18 'to electrically connect the substrate 24a and the substrate 24b with the board-to-board connector 37 and the board 24b. The circuit pattern can be used. According to this, the board | substrate 24a as an antenna arrangement | positioning part can be attached or detached with respect to the parameter writer 4 (board | substrate 24b), and the effect similar to the inverter apparatus 1 can be acquired.

<Fourth embodiment>
FIG. 7 shows a fourth embodiment, and the same parts as those already described are denoted by the same reference numerals and the description thereof is omitted, and different points will be described.

  In the casing 13 of the inverter device 1, a shield body 39 that covers the antenna 18 and is located on the front side of the substrate 14a is movably provided. The shield body 39 is made of the same material as that of the shield body 35 and has an operation knob (shield operation unit 39a) used for the movement operation. On the other hand, a long hole 40 that exposes the shield operation portion 39a is formed in the front surface portion 13a of the housing 13. In this way, the shield body 39 is moved and operated along the elongated hole 40 in the direction of the arrow in FIG. 7 by the shield operation unit 39a, so that the antenna 18 can communicate with the outside in a use position for receiving external radio waves. Move between unused positions to avoid doing so. The shield operation part 39a, the long hole 40 and the like correspond to the movement operation means 41. According to the above configuration, by holding the shield operation unit 39a and moving the shield body 39 to the use position, radio waves can be exchanged in the antenna 18, and information can be transmitted between the external processing device and the storage circuit unit 12. Can communicate. Further, in the non-use position, an external radio wave can be blocked by the shield body 39 so as not to be received by the antenna 18, and malfunction of the memory circuit unit 12 can be prevented. Furthermore, according to the above configuration, it is possible to determine whether or not the antenna 18 can exchange radio waves with a simple configuration of the shield operation unit 39a and the long hole 40.

  Although not shown in the drawing, the parameter writer 4 also has a configuration in which the shield body 39 is provided in the housing 23 and the long hole 40 is provided in the housing 23 in the same manner as the inverter device 1. The effect of can be obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  For example, the storage circuit units 12 and 22 are not limited to those provided with an EEPROM, and various nonvolatile storage means such as a flash memory can be used. Further, the peripheral device is not limited to the parameter writer 4, and the configuration of the movement operation means 41 can be changed as appropriate.

  The drive target of the inverter device 1 is not limited to the induction motor 3 but may be a permanent magnet type motor such as a brushless DC motor or an IPM (Interior Permanent Magnet) motor. The wirings 16, 17, 18a, 27, 28a, etc. may be configured as signal transmission means or electrical connection means. For example, the wirings 16, 17, 18a, 27, 28a, etc. A board-to-board connector 37 may be provided between the boards 14a and 14b of the embodiment.

  As the substrate, various substrates such as a flexible wiring substrate may be used instead of the printed wiring board. For example, when the printed wiring boards 14a and 14b are formed of a single flexible wiring board, the flexible wiring board can be disposed in the housing 13 in a state of being deformed, for example, in a horizontal “U” shape. . Therefore, even if the flexible circuit board is provided with the memory circuit unit 12 and the antenna arrangement unit, the memory circuit unit 12 and the antenna arrangement unit can be arranged so as not to be located on the same plane in the housing 13. it can. As described above, in both the inverter device 1 and the parameter writer 4, one of the plurality of substrates may be omitted, and the electronic components and the like of the omitted substrate may be collectively arranged on another substrate.

  In the drawings, 1 is an inverter device, 4 is peripheral equipment, 5, 5a and 5b are communication means, 10 is an inverter main circuit, 12 and 22 are memory circuit sections, 14ap, 14ap ', 24ap and 33p are antenna arrangement sections, 18 , 18 'and 28 are antennas, 30 is a packing body, 30a display unit, 35 and 39 are shield bodies, and 41 is a moving operation means.

Claims (11)

In an inverter device including an inverter main circuit for driving a load,
An antenna for transmitting and receiving radio waves,
A non-volatile storage means for storing information, wherein the storage circuit unit is electrically connected to the antenna and operates using radio waves received by the antenna as an energy source;
An inverter device comprising: an antenna arrangement portion provided at a position not on the same plane as a surface of a substrate on which the memory circuit portion is mounted in the inverter device, wherein the antenna is arranged.   The inverter device according to claim 1, wherein the antenna arrangement unit is configured to be attachable to and detachable from the inverter device.   The inverter device according to claim 1, further comprising a shield body that blocks radio waves.   The inverter device according to claim 3, wherein the shield body is disposed between the antenna and the inverter main circuit.   4. The inverter device according to claim 3, further comprising a moving operation means that is movably disposed with respect to the inverter device and that can be moved from the outside of the shield body. In the inverter device package for packing the inverter device according to any one of claims 1 to 5,
A package having a display unit for displaying the directivity of the antenna of the inverter device or the position of the antenna in the package on the surface of the package. In peripheral devices that exchange information with the inverter device via communication means,
An antenna for transmitting and receiving radio waves,
A non-volatile storage means for storing information, wherein the storage circuit unit is electrically connected to the antenna and operates using radio waves received by the antenna as an energy source;
A peripheral device comprising: an antenna arrangement portion provided at a position not on the same plane as the surface of the substrate on which the memory circuit portion is mounted in the peripheral device, wherein the antenna is arranged.   The peripheral device according to claim 7, wherein the antenna placement unit is configured to be detachable from the peripheral device.   The peripheral device according to claim 7, further comprising a shield body that blocks radio waves.   The peripheral device according to claim 9, further comprising: a moving operation unit that displaces the shield body relative to the inverter device and that can move the shield body from the outside. In the peripheral device packaging body for packing the peripheral device according to any one of claims 7 to 10,
A packaging body comprising a display unit for displaying the antenna directivity or the antenna position of the peripheral device in the packaging body on the surface of the packaging body.

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