Servo driver and servo driving system

Abstract

The utility model provides a servo driver and a servo driving system, and the servo driver comprises a housing which is used for protecting internal devices of the servo driver; the bottom plate is used for fixing the servo driver; the interface panel comprises a power supply input interface used for being connected to a power supply; the first load power interface is used for being connected with a first load to supply power to the first load. The first control input / output interface is used for receiving a first input signal related to a first load and outputting a first control signal related to the first load; the first feedback interface is used for receiving a first feedback signal about a first load; the control board is used for generating a first control signal for controlling the first load based on the first input signal and / or the first feedback signal; and the power supply board is used for converting power supply voltage of a power supply connected with the power supply input end into working voltage so as to provide the working voltage to the control board.

Description

Technical Field

[0001] The present application relates to the technical field of servo drive, and in particular to a servo drive and a servo drive system. Background Art

[0002] Traditional servo drives have shortcomings such as large size, large installation space and high noise, and unreasonable distribution of wiring interfaces, which easily lead to wiring confusion, wiring errors and other problems. They cannot meet the needs of small installation space, high voltage and high power, and network-based high-performance control. Utility Model Content

[0003] In view of this, the purpose of the present application is to propose a servo drive and a servo drive system to at least solve at least some of the problems such as the unreasonable distribution of the above-mentioned wiring interfaces, which easily lead to wiring confusion, wiring errors, and inability to meet the requirements of small installation space, high voltage and high power, and network-based high-performance control.

[0004] Based on the above purpose, the present application provides a servo drive, comprising:

[0005] A housing, used to protect internal components of the servo drive;

[0006] A bottom plate, detachably connected to the housing and located at one side of the housing, for fixing the servo driver;

[0007] an interface panel, detachably connected to the housing and located on the other side of the housing, the interface panel comprising a power input area and a first axis area; wherein the power input area comprises a power input interface for connecting to a power source; the first axis area comprises a first load power interface, a first control input / output interface and a first feedback interface, the first load power interface being used to connect to a first load to supply power to the first load; the first control input / output interface being used to receive a first input signal regarding the first load, and to output a first control signal regarding the first load; the first feedback interface being used to receive a first feedback signal regarding the first load;

[0008] a control board connected to both the first control input / output interface and the first feedback interface, and configured to generate the first control signal for controlling the first load based on the first input signal and / or the first feedback signal;

[0009] A power supply board is connected to the power input terminal and the control board, and is used to convert the power supply voltage of the power supply connected to the power input terminal into an operating voltage to provide to the control board.

[0010] In some embodiments, the first axis area on the interface panel is also provided with a first network communication interface for communicating with an external device via a network.

[0011] In some embodiments, a braking interface is also provided on the interface panel for externally connecting a braking resistor and a common bus.

[0012] In some embodiments, a second axis area is further provided on the interface panel, and the second axis area includes a second load power interface, a second control input / output interface, a second feedback interface, and a second network communication interface;

[0013] Among them, the second load power supply interface is used to connect to the second load to supply power to the second load; the second control input / output interface is used to receive a second input signal about the second load, and output a second control signal about the second load; the second feedback interface is used to receive a second feedback signal about the second load; the second control input / output interface and the second feedback interface are both connected to the control board; the second network communication interface is used to communicate with an external device via a network.

[0014] In some embodiments, the servo drive further comprises:

[0015] The display area is used to display the current state or alarm type of the dual-axis servo drive via the display module.

[0016] In some embodiments, the power input area and the display area are arranged in parallel along a first direction, and the power input interface, the first load power interface, the brake interface and the second load power interface are arranged in parallel along a second direction; the display area, the first control input / output interface, the first feedback interface, the first network communication interface, the second network communication interface, the second control input / output interface, and the second feedback interface are arranged in parallel along the second direction.

[0017] In some embodiments, the first control input / output interface and the second control input / output interface each include at least one of the following: a three-way digital output interface, an input / output DC input interface, a three-way digital input interface, a two-way analog input interface, or an encoder equivalent output interface.

[0018] In some embodiments, the first feedback interface and the second feedback interface both include an ABZ feedback input interface and / or a motor temperature feedback interface.

[0019] In some embodiments, the servo drive further comprises at least one of the following:

[0020] A brake resistor, used to release the regenerative braking energy of the power device in the servo drive;

[0021] An over-temperature protection circuit, used for disconnecting the first load or the second load when the temperature of the first load or the second load is higher than a preset threshold;

[0022] A heat sink, used for conducting heat to internal components of the servo drive;

[0023] and a fan for dissipating heat from the internal components of the dual-axis servo drive.

[0024] The present application also provides a servo drive system, comprising: a main control unit and at least one dual-axis servo drive as described in the present application.

[0025] From the above, it can be seen that the servo drive and servo drive system provided by the present application arrange the interfaces in partitions according to different interface objects so as to reasonably layout the interface panels, which is conducive to neat and orderly wiring and solves the problems of confusing and error-prone wiring; and while meeting the control requirements of the servo drive, it greatly reduces the size of the body itself; it can also be modularly disassembled and assembled for easy maintenance and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1-Figure 2 is a schematic structural diagram of a servo driver according to an embodiment of the present application;

[0028] Figure 3 Schematic diagram of a servo drive system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] Traditional servo drives are large in size, which means they require large installation space and are noisy. In addition, the wiring interfaces are not distributed properly, which easily leads to problems such as confusing wiring and wiring errors. They also cannot meet the requirements of small installation space, high voltage and high power, and network-based high-performance control. How to solve the problems of confusing wiring and easy errors, and how to reduce the size of the machine itself while meeting the control requirements of the servo drive have become technical issues that need to be solved urgently.

[0032] In view of this, one or more embodiments of the present application provide a servo drive, which arranges interfaces in partitions according to different interface objects so as to rationally layout the interface panel, which is conducive to neat and orderly wiring and solves the problems of confusing and error-prone wiring; and while meeting the control requirements of the servo drive, it greatly reduces the size of the machine body itself; it can also be modularly disassembled and assembled for easy maintenance and installation.

[0033] refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 A schematic structural diagram of a servo driver according to an embodiment of the present application is shown. Figure 1 The servo drive 100 comprises:

[0034] The housing 110 is used to protect the internal components of the servo driver 100;

[0035] A bottom plate 120 detachably connected to the housing 110 and located at one side of the housing 110 , and used for fixing the servo driver 100 ;

[0036] The interface panel 130 is detachably connected to the housing 110 and is located on the other side of the housing 110. The interface panel 130 includes a power input area 131 and a first axis area 132. The power input area 131 includes a power input interface P1 for connecting to a power source. The first axis area 132 includes a first load power interface P2, a first control input / output interface C2 and a first feedback interface C4. The first load power interface P2 is used to connect to a first load to supply power to the first load. The first control input / output interface C2 is used to receive a first input signal about the first load and output a first control signal about the first load. The first feedback interface C4 is used to receive a first feedback signal about the first load.

[0037] a control board 210 connected to both the first control input / output interface C2 and the first feedback interface C4, and configured to generate the first control signal for controlling the first load based on the first input signal and / or the first feedback signal;

[0038] The power supply board 220 is connected to the power input terminal P1 and the control board 210 , and is used to convert the power supply voltage of the power supply connected to the power input terminal P1 into an operating voltage to provide to the control board 210 .

[0039] The control board 210 and the power supply board 220 can be arranged in the accommodation space formed by the housing 110, the bottom plate 120 and the interface panel 130. By rationally arranging the interfaces on the interface panel 130, the connection space between the interfaces and the control board 210 and the power supply board 220 can be reduced, thereby reducing the volume of the servo drive.

[0040] In some embodiments, the housing 110 may include an all-aluminum alloy material. Among them, using an all-aluminum alloy to make the housing is conducive to ensuring the weight of the servo drive and the severe environmental requirements. Further, in some embodiments, the housing 110 may also be provided with matching detachable connection structures, such as a snap-on structure, on opposite sides. In this way, multiple servo drives can be snapped together and arranged adjacently in parallel, further reducing the overall installation volume of the servo drive, and the detachable connection can also facilitate maintenance.

[0041] In some embodiments, the base plate 120 may be provided with mounting holes for fixing the servo drive to the area to be installed.

[0042] In some embodiments, the power input interface P1 may include three-phase input interfaces L1, L2, L3 and a ground interface, wherein the power input interface P1 may be connected to a 380V AC power supply or a 540V DC power supply between any two phases.

[0043] In some embodiments, the first axis area 132 includes a first load power interface P2, which may include a first load three-phase power interface U, V, W, and a ground port, which are U, V, W, BK+, BK-, and PE in sequence, for supplying power to a first load, wherein the first load may be a motor.

[0044] In some embodiments, the first axis area 132 also includes a first control input / output interface C2, and the first control input / output interface C2 includes at least one of the following: a three-way digital output interface, an IO24v input interface, a three-way digital input interface, a two-way analog input interface or an encoder equivalent output interface.

[0045] In some embodiments, the first axis region 132 further includes a first feedback interface C4, which includes: an ABZ feedback input interface and / or a motor temperature feedback interface. The ABZ feedback input interface can receive a feedback signal from the first encoder ABZ, and the motor temperature feedback interface can receive a temperature signal from the first load.

[0046] In some embodiments, the first axis region 132 further includes a first network communication interface for communicating with an external device via a network. For example, the first network communication interface may be a Glink-II network port (eg, Gigabit Glink-II).

[0047] In some embodiments, a brake interface P3 is also provided on the interface panel 130 for externally connecting a brake resistor and a common bus. Specifically, the brake interface P3 may include common bus interfaces DC- and B1+, so that when there are multiple servo drives in the servo system, the power utilization rate can be improved by sharing the bus. The brake interface P3 may also include external brake resistor interfaces B1+ and B2 to further consume a large amount of regenerative electric energy generated by the first load motor during rapid braking.

[0048] In some embodiments, a second axis area 133 is also provided on the interface panel 130, and the second axis area includes a second load power supply interface P4, a second control input / output interface C2', a second feedback interface C4' and a second network communication interface. Among them, the second axis area and the first axis area can have the same interface setting to realize dual-axis control, such as X-axis and Y-axis. Specifically, the second load power supply interface P4 is used to connect to the second load to supply power to the second load. For example, the second load power supply interface P4 may include a second load three-phase power supply interface U, V, W, and a ground port for supplying power to the second negative. Among them, the second load may be a motor. The second control input / output interface C2' is used to receive a second input signal about the second load, and output a second control signal about the second load. For example, the second control input / output interface C2' includes at least one of the following: a three-way digital output interface, an IO24v input interface, a three-way digital input interface, a two-way analog input interface, or an encoder equivalent output interface. The second feedback interface C4' is used to receive a second feedback signal about the second load. For example, the second feedback interface C4' includes: an ABZ feedback input interface and / or a motor temperature feedback interface. The ABZ feedback input interface can receive a feedback signal from a second encoder ABZ, and the motor temperature feedback interface can receive a temperature signal from the second load. The second control input / output interface C2' and the second feedback interface C4' are both connected to a second network communication interface of the control board for communicating with an external device via a network. For example, the second network communication interface can be a Glink-II network port (e.g., Gigabit Glink-II).

[0049] In some embodiments, the first network communication interface and the second network communication interface may be connected to the control board 210 .

[0050] In some embodiments, the interface panel 130 further includes: a display area 134, which is used to display the current state or alarm type of the dual-axis servo driver via a display module. Specifically, the display module can be connected to the control panel 210, for example, the display module can include a digital display tube, an indicator light, etc. The digital tube displays different numbers to indicate different working states or alarm types. Different ways of flashing the indicator light can indicate different working states or alarm types. The digital display tube and the indicator light can be used to indicate the current state and alarm type of the dual-axis servo driver, respectively.

[0051] like Figure 1As shown, the power input area 131 and the display area 134 are arranged in parallel along a first direction (e.g., horizontally), and the power input interface P1, the first load power interface P2, the brake interface P3 and the second load power interface P4 are arranged in parallel along a second direction (e.g., vertically). The display area 134, the first control input / output interface C2, the first feedback interface C4, the first network communication interface, the second network communication interface, the second control input / output interface C2', and the second feedback interface C4' are arranged in parallel along the second direction (e.g., vertically). It can be seen that the interface panel 130 divides the interface into different areas based on the connection object, such as the first axis area and the second axis area; it also arranges the interface based on the signal type, and arranges the power input interface P1, the first load power interface P2, the brake interface P3 and the second load power interface P4 connected to the power type signal in parallel along the second direction (for example, longitudinal direction), and arranges the display area 134, the first control input / output interface C2, the first feedback interface C4, the first network communication interface, the second network communication interface, the second control input / output interface C2', and the second feedback interface C4' connected to the data type signal in parallel along the second direction (for example, longitudinal direction). Reasonable layout of the interface from two different dimensions, namely, transmission signal and connection object, can ensure the performance of the servo drive while achieving neat and orderly wiring and reducing the volume.

[0052] In some embodiments, the servo drive further includes a brake resistor for releasing the inter-electrode parasitic capacitance charge of the power device in the servo drive, wherein the brake resistor may be a built-in 100W brake resistor to protect the frequency converter or inverter from the harm of the motor regenerated electric energy when the motor is rapidly braked.

[0053] In some embodiments, the servo driver further includes an over-temperature protection circuit for disconnecting the first load or the second load when the temperature of the first load or the second load is higher than a preset threshold.

[0054] In some embodiments, the servo drive further includes a heat sink for conducting heat to internal components of the servo drive.

[0055] In some embodiments, the servo drive further includes a fan for dissipating heat through flow to internal components of the dual-axis servo drive.

[0056] In some embodiments, the servo drive further includes a power capacitor board 230, including a power capacitor to store the rectified direct current. Figure 2As shown, the control board 210 may include peripheral input and output, control modules (including processors, such as MCU, micro control unit) and PHY communication, and the main cores use gigabit network communication to shorten the interaction time. The power supply board may include a flyback switching transformer to generate various power supplies required by the driver, plus a drive circuit, a rectifier inverter integrated (PIM) module, and a current and voltage sampling circuit.

[0057] Among them, the current and voltage sampling circuit can sample the current and / or voltage of the first load (or the second load) to obtain a sampling signal. The control board 210 generates a control signal based on the sampling signal and / or the first signal, and sends it to the control module of the power supply board 220. The control module can calculate and generate a control signal based on the signal it receives, and the drive circuit drives the load based on the control signal. In addition, the control module can also be used to control other modules or devices of the servo drive, which are technical means known to those skilled in the art and will not be repeated here. The power-inverter integrated (PIM) module can be used to transform (rectify and / or invert) the power supply voltage to provide the servo drive 100 with a corresponding internal working DC voltage. It can be seen that the servo drive according to the present application can achieve 380VAC / 540VDC input, single-axis rated 12A output and 3 times overload, differential analog quantity, common protection functions, speed control accuracy better than 1%, built-in 100W brake resistor, single-axis two-way analog input, three-way digital input port, three-way digital output port, encoder feedback output, weight <7.8kg, digital tube display, and common bus.

[0058] According to an embodiment of the present application, a servo drive system is further provided, including: a main control unit and at least one servo drive (eg, the servo drive 100 of the embodiment of the present application).

[0059] Specifically, Figure 3 As shown, Figure 3 A schematic diagram of a servo drive system according to an embodiment of the present application is shown. Figure 3 In the embodiment, the servo drive system 300 includes a main control unit 310 and a plurality of servo drives 320, and the plurality of servo drives 320 are connected in series. The main control unit 310 is connected to one of the servo drives. The main control unit 310 and the servo drives 320 are connected by a network bus, and the servo drives 320 are connected by a network line. The main control unit 310 and the servo drives 320 can form a distributed acquisition, thereby improving the integration and reliability of the automatic servo drive control system.

[0060] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0061] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0062] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A servo drive, characterized in that: include: A housing, used to protect internal components of the servo drive; A bottom plate, detachably connected to the housing and located at one side of the housing, for fixing the servo driver; an interface panel, detachably connected to the housing and located on the other side of the housing, the interface panel comprising a power input area and a first axis area; wherein the power input area comprises a power input interface for connecting to a power source; the first axis area comprises a first load power interface, a first control input / output interface and a first feedback interface, the first load power interface being used to connect to a first load to supply power to the first load; the first control input / output interface being used to receive a first input signal regarding the first load, and to output a first control signal regarding the first load; the first feedback interface being used to receive a first feedback signal regarding the first load; a control board connected to both the first control input / output interface and the first feedback interface, and configured to generate the first control signal for controlling the first load based on the first input signal and / or the first feedback signal; A power supply board is connected to the power input terminal and the control board, and is used to convert the power supply voltage of the power supply connected to the power input terminal into an operating voltage to provide to the control board.

2. The servo driver according to claim 1, characterized in that: The first axis area on the interface panel is also provided with a first network communication interface for communicating with an external device via a network.

3. The servo driver according to claim 1 or 2, characterized in that: The interface panel is also provided with a brake interface for externally connecting a brake resistor and a common bus.

4. The servo driver according to claim 3, characterized in that: The interface panel is also provided with a second axis area, the second axis area including a second load power interface, a second control input / output interface, a second feedback interface and a second network communication interface; Among them, the second load power supply interface is used to connect to the second load to supply power to the second load; the second control input / output interface is used to receive a second input signal about the second load, and output a second control signal about the second load; the second feedback interface is used to receive a second feedback signal about the second load; the second control input / output interface and the second feedback interface are both connected to the control board; the second network communication interface is used to communicate with an external device via a network.

5. The servo driver according to claim 4, characterized in that: The interface panel also includes: The display area is used to display the current status or alarm type of the servo drive via a display module.

6. The servo driver according to claim 5, characterized in that: The power input area and the display area are arranged in parallel along a first direction, and the power input interface, the first load power interface, the brake interface and the second load power interface are arranged in parallel along a second direction; the display area, the first control input / output interface, the first feedback interface, the second network communication interface, the second control input / output interface, and the second feedback interface are arranged in parallel along the second direction.

7. The servo driver according to claim 6, characterized in that: The first control input / output interface and the second control input / output interface each include at least one of the following: a three-way digital output interface, an input / output DC input interface, a three-way digital input interface, a two-way analog input interface or an encoder equivalent output interface.

8. The servo driver according to claim 7, characterized in that: The first feedback interface and the second feedback interface both include an ABZ feedback input interface and / or a motor temperature feedback interface.

9. The servo driver according to claim 1, characterized in that: Also includes at least one of the following: A brake resistor, used to release the inter-electrode parasitic capacitance charge of the power device in the servo drive; An over-temperature protection circuit, used for disconnecting the first load or the second load when the temperature of the first load or the second load is higher than a preset threshold; A heat sink, used for conducting heat to internal components of the servo drive; And a fan is used for performing flow heat dissipation on the internal components of the servo drive.

10. A servo drive system, characterized in that: include: A main control unit and at least one servo drive according to any one of claims 1-9.

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