A frequency converter control device

Abstract

The present invention discloses a frequency converter control device, which includes a control housing, a keyboard bracket, a keyboard and a front cover; both ends of the keyboard bracket are respectively connected to the side walls of the control housing and can slide along the control housing, the keyboard is snap-connected to the keyboard bracket, the front cover is arranged on the control housing and is movably snap-connected to the control housing, an installation space is formed between the front cover and the control housing, and the keyboard bracket and the keyboard are located in the installation space; a hollow groove is further provided on the front cover, and the hollow groove is adapted to the keyboard; a main control circuit PCBA board is also fixedly arranged on the upper surface of the control housing, the main control circuit PCBA board is located below the keyboard bracket, and at least an I / O communication expansion unit and an encoder card assembly are arranged on the main control circuit PCBA board. By equipping the control housing with a front cover that is easy to disassemble and assemble in the embodiment of the present invention, the protection of the components of the frequency converter can be enhanced, and the keyboard bracket is connected to the control housing and can slide along it, and the keyboard bracket can also be slid when wiring the wiring ports on the main control circuit PCBA board to avoid interfering with the wiring.

Description

Technical Field

[0001] The present invention relates to the technical field of control devices, and particularly to a frequency converter control device. Background Art

[0002] Common devices in the electrical technology field include frequency converters, servo drivers, inverters, and motor speed controllers, etc. These devices are all electrical devices that operate and function using electronic technology. Taking the electrical device as a frequency converter as an example, existing frequency converters are usually arranged in the device casing in a parallel stacking manner, or I / O interfaces are arranged on the front of the device but with a non-pluggable structure. However, when using either of the above two common methods, it will result in poor protection of the external electrical part of the frequency converter and inconvenient maintenance and disassembly. Summary of the Invention

[0003] An embodiment of the present invention provides a frequency converter control device, aiming to solve the problem that in the prior art methods, frequency converters are usually arranged in the device casing in a parallel stacking manner, or I / O interfaces are arranged on the front of the device and with a non-pluggable structure, both of which will result in poor protection of the external electrical part of the frequency converter and inconvenient maintenance and disassembly.

[0004] An embodiment of the present invention discloses a frequency converter control device, which includes a control shell, a keyboard bracket, a keyboard, and a front cover; both ends of the keyboard bracket are respectively connected to the side walls of the control shell and can slide along the control shell, the keyboard is snap-connected to the keyboard bracket, the front cover is arranged on the control shell and is movably snap-connected to the control shell, an installation space is formed between the front cover and the control shell, and the keyboard bracket and the keyboard are located in the installation space; a hollowed-out groove is also provided on the front cover, and the hollowed-out groove is adapted to the keyboard;

[0005] A main control circuit PCBA board is also fixedly arranged on the upper surface of the control shell, the main control circuit PCBA board is located below the keyboard bracket, and at least an I / O communication expansion unit and an encoder card assembly are arranged on the main control circuit PCBA board; wherein, the I / O communication expansion unit is used to expand communication interfaces, and the encoder card assembly is used to encode the collected data.

[0006] Further, the keyboard bracket is slidably connected to the control shell; wire routing through holes are arranged on both the keyboard and the keyboard bracket, and the wire routing through holes are used to guide the wire routing deployment of cables.

[0007] Further, a sliding track is arranged on the surface of the control shell facing the keyboard bracket, and the sliding feet arranged on the keyboard bracket are movably connected to the sliding track; wherein, the sliding track includes a first guide rail and a second guide rail;

[0008] The space between the first guide rail and the second guide rail in the control housing forms an installation part, and the installation part is successively a first installation part, a second installation part, and a third installation part from top to bottom.

[0009] Further, a grounding metal part is provided on the surface of the control housing on the side away from the front cover, and the main control circuit PCBA board is grounded through the grounding metal part.

[0010] Further, the I / O communication expansion unit is arranged on the main control circuit PCBA board and is located in the second installation part of the control housing; the I / O communication expansion unit is connected to the control housing through a movable socket; the movable socket includes a socket body and a buckle switch; a card interface is provided on the control housing, and the buckle switch is clamped with the card interface so that the socket body is fixedly connected to the control housing.

[0011] Further, the encoder card assembly is arranged on the main control circuit PCBA board and is located in the third installation part of the control housing, and the encoder card assembly is fixedly connected to the control housing through a bolt assembly.

[0012] Further, a control cable interface is also provided on the main control circuit PCBA board and is located in the first installation part of the control housing, and the control cable interface is connected to the keyboard through a control cable.

[0013] Further, a spacer is arranged between the first installation part, the second installation part, and the third installation part, and a function unit fastening member is arranged on the spacer.

[0014] Further, both the I / O communication expansion unit and the encoder card assembly are provided with connection pins, and the connection pins are used to integrate the external circuit ports of the I / O communication expansion unit and the encoder card assembly.

[0015] Further, a connection pin socket is provided on the main control circuit PCBA board, and the integrated pin socket is connected to the connection pins.

[0016] On the one hand, the frequency converter control device disclosed in the above embodiment can enhance the protection of the components of the frequency converter by equipping the control housing with an easily detachable front cover; on the other hand, connecting the keyboard bracket to the control housing and allowing it to slide can slide the keyboard bracket to avoid interfering with the wiring when wiring the wiring ports on the main control circuit PCBA board. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the frequency converter control device provided by the embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the partial structure of the frequency converter control device provided by the embodiment of the present invention;

[0020] Figure 3 It is another schematic diagram of the partial structure of the frequency converter control device provided by the embodiment of the present invention;

[0021] Figure 4 It is yet another schematic diagram of the partial structure of the frequency converter control device provided by the embodiment of the present invention;

[0022] Figure 5 It is still another schematic diagram of the partial structure of the frequency converter control device provided by the embodiment of the present invention;

[0023] Figure 6 It is another schematic diagram of the overall structure of the frequency converter control device provided by the embodiment of the present invention. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0025] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0026] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0027] It should also be further understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] Please refer to Figures 1 to 6 , the frequency converter control device provided in this embodiment includes a control housing 2, a keyboard bracket 3, a keyboard 31, and a front cover 1; both ends of the keyboard bracket 3 are respectively connected to the side walls of the control housing 2 and can slide along the control housing 2, the keyboard 31 is snap-connected to the keyboard bracket 3, the front cover 1 is arranged on the control housing 2 and is movably snap-connected to the control housing 2, an installation space is formed between the front cover 1 and the control housing 2, and the keyboard bracket 3 and the keyboard 31 are located in the installation space; a hollowed-out groove is further provided on the front cover 1, and the hollowed-out groove is adapted to the keyboard 3;

[0029] A main control circuit PCBA board 21 is also fixedly provided on the upper surface of the control housing 2, the main control circuit PCBA board 21 is located below the keyboard bracket 3, and at least an I / O communication expansion unit 10 and an encoder card assembly 20 are provided on the main control circuit PCBA board 21; wherein, the I / O communication expansion unit 10 is used to expand communication interfaces, and the encoder card assembly 20 is used to encode the collected data.

[0030] In this embodiment, by equipping the control housing 2 with a detachable front cover 1 (that is, by arranging the front cover 1 on the control housing 2 and movably snap-connecting it to the control housing 2), the protection of the components of the frequency converter can be enhanced, and the problem of messy appearance of the frequency converter can be improved; moreover, by connecting the keyboard bracket 3 to the control housing 2 and enabling it to slide along the control housing 2, and arranging the main control circuit PCBA board 21 below the keyboard bracket 3, the keyboard bracket 3 can be slid when wiring the wiring ports on the main control circuit PCBA board to avoid interference with wiring.

[0031] Furthermore, as Figures 1 - 6 shown, the keyboard bracket 3 is slidably connected to the control housing 2; wire passing through holes 33 are provided on both the keyboard 31 and the keyboard bracket 3, and the wire passing through holes 33 are used to guide the routing deployment of cables;

[0032] A sliding track 23 is provided on the surface of the control housing 2 facing the keyboard bracket 3, and sliding feet 32 provided on the keyboard bracket 3 are movably connected to the sliding track 23; wherein, the sliding track 23 includes a first guide rail and a second guide rail;

[0033] The space between the first guide rail and the second guide rail in the control housing 2 forms an installation part, and the installation part is successively the first installation part 6, the second installation part 7, and the third installation part 8 from top to bottom.

[0034] More specifically, as Figures 1 to 6 shown, the frequency converter control device provided in this embodiment includes a front cover 1, a keyboard assembly, and a control housing 2; the front cover 1 is movably snap-connected to the control housing 2, the front cover 1 covers the control housing 2, the front cover 1 and the control housing 2 are connected to form an installation space, the keyboard assembly is arranged inside the installation space, and a hollow groove is provided on the front cover 1; the keyboard assembly includes a keyboard 31 and a keyboard bracket 3, the keyboard 31 is embedded in the hollow groove and the front of the keyboard 31 faces the outside of the device, the keyboard bracket 3 is used to support the keyboard 31, the keyboard bracket 3 is slidably connected to the control housing 2, wire routing through holes 33 are provided on both the keyboard 31 and the keyboard bracket 3, and the wire routing through holes 33 are used to guide the wire routing deployment of the cable; a sliding track 23 is provided on the surface of the control housing 2 facing the keyboard assembly, a sliding support foot 32 provided on the keyboard bracket 3 is movably connected to the sliding track 23, the sliding track 23 includes a first guide rail and a second guide rail, the control housing 2 includes an installation part, the installation part is arranged between the first guide rail and the second guide rail, and the installation part includes a first installation part 6, a second installation part 7, and a third installation part 8.

[0035] In an actual usage scenario, the frequency converter control device disclosed in the present invention realizes the control of electrical equipment such as frequency converters through human-machine information interaction. The user inputs control commands through the keyboard assembly included in the device, and the keyboard assembly sends control commands to functional units such as the control function module in the device to achieve electrical control. The keyboard assembly serves as a human-machine interaction functional component in the control device and connects the user and the control function module. Its installation position and installation method deeply affect the operation of other functional components and the overall device. The frequency converter control device disclosed in the present invention reasonably designs the structural conditions required for the installation of the keyboard assembly, and coordinately arranges the connection method and relative installation position between the keyboard assembly and other functional modules. The main body structure of the device includes a front cover 1 and a control housing 2. Both the front cover 1 and the control housing 2 serve as external protection components and functional module support components of the device. The front cover 1 and the control housing 2 are combined to form an installation space for each functional module. Specifically, the front cover 1 and the control housing 2 are installed in a movable and openable manner. Two fastening members are provided at both port sides of the front cover 1, and the fastening members are snapped onto the edge of the control housing 2. The user can open one of the fastening members, and the front cover 1 rotates with the other fastening member as the rotation fulcrum to complete the opening action of the front cover 1 relative to the control housing 2. After the front cover 1 is opened from the control housing 2, the user can observe or disassemble and install the functional modules in the device; the keyboard assembly includes a keyboard. When the front cover 1 and the control housing 2 are snapped together, the keyboard is embedded in the hollow groove provided on the front cover 1 and the key side surface faces outside the device; specifically, the keyboard is installed on the control housing 2 through a keyboard bracket 3. Sliding tracks 23 are provided at both edge sides of the control housing 2. The keyboard bracket 3 includes two sliding feet 32 for support and movement. The sliding feet 32 slide along the sliding tracks 23 as the movement path and drive the keyboard to move, so that the keyboard can move linearly along the control housing 2. After the user moves the keyboard to an appropriate position, other functional modules provided in the space below the keyboard bracket 3 can be presented. The movable connection between the keyboard assembly and the control housing 2 through the sliding tracks 23 can make full use of the space below the keyboard bracket 3 for module installation, and the position change of the keyboard does not interfere with the operation of other functional modules; the control housing 2 serves as the main installation component in the device, including a first installation part 6, a second installation part 7, and a third installation part 8. Multiple installation parts correspond to install multiple functional modules. The installation space of the control housing 2 is evenly distributed and the structure is reasonable. The boundaries between the installation parts are clear, so that the operation of each functional module is coordinated. The complex lines in the device can be routed through the boundaries between the installation parts. The keyboard and the control housing 2 are connected through an extended network cable, so that the user can move the keyboard after removing it, making full use of the space design to achieve the rationalization of the structure.

[0036] In summary, the installation part of the control housing 2 of the control device is used to install multiple functional modules, support the input and output of EtherCAT and PROF I NET communication protocols, and is equipped with communication interfaces for Modbus and CANopen. It has a fixed network port to connect to computer devices, facilitating a comprehensive understanding of the working status of the frequency converter. The control device is also equipped with a USB interface to achieve high-speed data transmission. The frequency converter control device disclosed in the present invention designs the connection structures between various components, coordinates and optimizes the spatial position relationships between the functional components, and significantly improves the human-machine interaction relationship of the control device.

[0037] Further, as Figures 1 to 6 shown, a main control circuit PCBA board 21 is provided on the surface of the control housing 2 on the side away from the front cover 1.

[0038] Specifically, the main control circuit PCBA board 21, as the installation component of the main control circuit in the control device, is used to provide and carry the main operation CPU (CPU, i.e., the central processing unit) of the control function module and the input / output interface for external signals. The main control circuit PCBA board 21 is installed on the control housing 2 and is arranged on the surface on the side away from the front cover 1, making full use of the surface mounting space of the control housing 2. A certain recessed space is formed on the surface of the control housing 2 on the side where the main control circuit PCBA board 21 is installed to protect the main control circuit PCBA board 21. An aviation pin socket 50 is also provided on the main control circuit PCBA board 21 for controlling the electrical connection state of the frequency converter.

[0039] Further, as Figures 1 to 6 shown, a grounding metal part 22 is provided on the surface of the control housing 2 on the side away from the front cover 1, and the main control circuit PCBA board 21 is grounded through the grounding metal part 22.

[0040] Specifically, the main control circuit PCBA board 21 and the grounding metal part 22 are jointly installed on the control housing 2, and the grounding metal part 22 is grounded to protect the power-on safety of the main control circuit PCBA board 21.

[0041] Further, as Figures 1 to 6 shown, the I / O communication expansion unit 10 is arranged on the main control circuit PCBA board 21 and is located in the second installation part 7 of the control housing 2; the I / O communication expansion unit 10 is connected to the control housing 2 through a movable socket; the movable socket includes a socket body and a snap switch; a card interface is provided on the control housing, and the snap switch is snap-connected to the card interface so that the socket body is fixedly connected to the control housing.

[0042] Specifically, the I / O extension Modules expansion unit is installed on the second installation part 7 of the control housing 2 as the I / O communication expansion unit 10 of the control device. The I / O communication expansion unit 10 is connected to the control housing 2 as an independent module. The I / O communication expansion unit 10 is connected to the control housing 2 through a movable socket. A pressing spring piece is arranged on the movable socket. The user can use a finger to pull and move the spring piece to automatically combine or separate the movable socket from the control housing 2. The movable socket is also used for installing aviation pin headers 50.

[0043] Further, as Figures 1 to 6 shown, the encoder card assembly 20 is arranged on the main control circuit PCBA board 21 and is located at the third installation part 8 of the control housing 2. The encoder card assembly 20 is fixedly connected to the control housing 2 through a bolt assembly.

[0044] Specifically, below the second installation part 7 where the I / O communication expansion unit 10 is installed is the third installation part 8 of the control housing 2. The third installation part 8 of the control housing 2 is used for installing the encoder card assembly serving as the encoder card assembly 20, and is used to support the interchange of multiple encoder communication cards. The encoder card assembly 20 is fixed on the third installation part 8 of the control housing 2 through a bolt assembly. Plugging anti-slip lines and force-bearing fasteners are arranged on the encoder card assembly 20 for further strengthening the connection between the encoder card assembly 20 and the control housing 2.

[0045] Further, as Figures 1 to 6 shown, a control cable interface 30 is also arranged on the main control circuit PCBA board 21 and is located at the first installation part 6 of the control housing 2. The control cable interface 30 is connected to the keyboard 31 through a control cable.

[0046] Specifically, the control cable interface 30 includes multiple types of interfaces, such as input and output interfaces of EtherCAT and PROF INET communication protocols, Modbus communication interfaces, CANopen communication interfaces, and keyboard connection network ports, etc. Integrating multiple types of control cable interfaces 30 on the first installation part 6 of the control housing 2 is beneficial for integrating the functions of the interfaces and creating stable input and output conditions for the cable interfaces.

[0047] Further, as Figures 1 to 6 shown, a spacer is arranged between the first installation part 6, the second installation part 7, and the third installation part 8, and function unit fastening parts are arranged on the spacer.

[0048] Specifically, arranging a spacer between the first installation part 6, the second installation part 7, and the third installation part 8 can effectively separate the three installation parts spatially to form three relatively independent installation parts. Each installation part is used for centrally installing components of the same type.

[0049] Furthermore, both the I / O communication expansion unit 10 and the encoder card assembly 20 are provided with connection pin headers. The connection pin headers are used to integrate the external circuit ports of the I / O communication expansion unit 10 and the encoder card assembly 20. A connection pin header socket is provided on the main control circuit PCBA board 21, and the integrated pin header socket is connected to the connection pin headers. Specifically, by providing the above-mentioned connection pin headers on the I / O communication expansion unit 10 and the encoder card assembly 20, and providing a connection pin header socket on the main control circuit PCBA board 21, it is convenient to electrically connect the I / O communication expansion unit 10 and the encoder card assembly 20 to the main control circuit PCBA board 21.

[0050] The present invention discloses a frequency converter control device, which includes a control housing, a keyboard bracket, a keyboard and a front cover. Both ends of the keyboard bracket are respectively connected to the side walls of the control housing and can slide along the control housing. The keyboard is snap-connected to the keyboard bracket. The front cover is arranged on the control housing and is movably snap-connected to the control housing. An installation space is formed between the front cover and the control housing, and the keyboard bracket and the keyboard are located in the installation space. The front cover is also provided with a hollowed-out groove, and the hollowed-out groove is adapted to the keyboard. The main control circuit PCBA board is also fixedly provided on the upper surface of the control housing. The main control circuit PCBA board is located below the keyboard bracket, and at least an I / O communication expansion unit and an encoder card assembly are provided on the main control circuit PCBA board. By equipping the control housing with an easily detachable and installable front cover in the embodiment of the present invention, the protection of the components of the frequency converter can be enhanced. Moreover, by connecting the keyboard bracket to the control housing and enabling it to slide along the control housing, the keyboard bracket can be slid when wiring the wiring ports on the main control circuit PCBA board to avoid interference with wiring.

[0051] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A frequency converter control device for connecting and controlling a frequency converter, characterized in that, Including: A control shell, a keyboard bracket, a keyboard and a front cover; both ends of the keyboard bracket are respectively connected to the side walls of the control shell and can slide along the control shell, the keyboard is snap-connected to the keyboard bracket, the front cover is arranged on the control shell and is movably snap-connected to the control shell, an installation space is formed between the front cover and the control shell, and the keyboard bracket and the keyboard are located in the installation space; a hollowed-out groove is also arranged on the front cover, and the hollowed-out groove is adapted to the keyboard; A main control circuit PCBA board is also fixedly arranged on the upper surface of the control shell, the main control circuit PCBA board is located below the keyboard bracket, and at least an I / O communication expansion unit and an encoder card assembly are arranged on the main control circuit PCBA board; wherein, the I / O communication expansion unit is used for expanding communication interfaces, and the encoder card assembly is used for encoding the collected data.

2. The frequency converter control device according to claim 1, wherein The keyboard bracket is slidably connected to the control shell; wire routing through holes are arranged on both the keyboard and the keyboard bracket, and the wire routing through holes are used for guiding the wire routing deployment of cables.

3. The frequency converter control device according to claim 2, characterized in that A sliding track is arranged on the surface of the control shell facing the keyboard bracket, and the sliding feet arranged on the keyboard bracket are movably connected to the sliding track; wherein, the sliding track includes a first guide rail and a second guide rail; The space between the first guide rail and the second guide rail in the control shell forms an installation part, and the installation part is successively a first installation part, a second installation part and a third installation part from top to bottom.

4. The frequency converter control device according to claim 2, characterized in that, A grounding metal part is arranged on the surface of the control shell away from the front cover, and the main control circuit PCBA board is grounded through the grounding metal part.

5. The frequency converter control device according to claim 3, characterized in that, The I / O communication expansion unit is arranged on the main control circuit PCBA board and is located in the second installation part of the control shell; the I / O communication expansion unit is connected to the control shell through a movable socket; the movable socket includes a socket body and a snap switch; a card interface is arranged on the control shell, and the snap switch is snap-connected to the card interface so that the socket body is fixedly connected to the control shell.

6. The frequency converter control device according to claim 5, characterized in that The encoder card assembly is arranged on the main control circuit PCBA board and is located in the third installation part of the control shell, and the encoder card assembly is fixedly connected to the control shell through a bolt assembly.

7. The frequency converter control device according to claim 6, characterized in that A control cable interface is also arranged on the main control circuit PCBA board and is located in the first installation part of the control shell, and the control cable interface is connected to the keyboard through a control cable.

8. The frequency converter control device according to claim 7, characterized in that, Spacer plates are arranged between the first installation part, the second installation part and the third installation part, and functional unit fastening parts are arranged on the spacer plates.

9. The frequency converter control device according to claim 1, wherein Both the I / O communication expansion unit and the encoder card assembly are provided with connection pin headers, and the connection pin headers are used for integrating the external circuit ports of the I / O communication expansion unit and the encoder card assembly.

10. The frequency converter control device according to claim 9, wherein, A connection pin header socket is arranged on the main control circuit PCBA board, and the connection pin header socket is connected to the connection pin headers.

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