WO2019000265A1 - Detection circuit for servo driver and servo driver - Google Patents

Detection circuit for servo driver and servo driver Download PDF

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Publication number
WO2019000265A1
WO2019000265A1 PCT/CN2017/090517 CN2017090517W WO2019000265A1 WO 2019000265 A1 WO2019000265 A1 WO 2019000265A1 CN 2017090517 W CN2017090517 W CN 2017090517W WO 2019000265 A1 WO2019000265 A1 WO 2019000265A1
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WO
WIPO (PCT)
Prior art keywords
port
switch module
module
detecting
servo driver
Prior art date
Application number
PCT/CN2017/090517
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French (fr)
Chinese (zh)
Inventor
曲跃鹏
Original Assignee
深圳配天智能技术研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳配天智能技术研究院有限公司 filed Critical 深圳配天智能技术研究院有限公司
Priority to PCT/CN2017/090517 priority Critical patent/WO2019000265A1/en
Priority to CN201780036477.7A priority patent/CN109417286B/en
Publication of WO2019000265A1 publication Critical patent/WO2019000265A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers

Definitions

  • the present invention relates to the field of servo drive technologies, and in particular, to a detection circuit and a servo driver of a servo driver.
  • servo drives have been widely used.
  • the current mainstream servo drives on the market are directly connected to the bus capacitors. At any time, the current is directly passed through the bus capacitors.
  • the user does not understand the power specifications of the servo drivers or applies the voltage level of the field and the voltage of the servo driver. When the levels do not match, it is easy to damage the servo driver due to the wrong connection of the power supply voltage.
  • the bus capacitance of the driver will explode due to overvoltage.
  • the technical problem to be solved by the present invention is to provide a detection circuit and a servo driver for a servo driver, which can solve the problem that components in the servo driver load module are damaged when the input voltage is too large.
  • a technical solution adopted by the present invention is to provide a detection circuit of a servo driver, a first switch module, the first switch module including a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, a second port of the first switch module is connected to a load module of the servo driver, and a voltage detecting module is connected to the first switch module a third port; a control module, connected to the voltage detecting module; wherein, when there is no input at the power input end of the servo driver, the first port of the first switch module is disconnected from the second port of the first switch module Opening, the first port of the first switch module is connected to the third port of the first switch module, and the voltage detecting module detects a voltage of the power input terminal of the servo driver, when the voltage is greater than a preset value
  • the control module controls the first port of the first switch module to remain disconnected from the second port of the
  • the server includes: a rectifier circuit, a detection circuit, a bus capacitor, an inverter circuit, and a peripheral circuit; wherein the detection circuit includes: a first switch module, the first switch module includes a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, and the first switch module is The second port is connected to the load module of the servo driver; the voltage detecting module is connected to the third port of the first switch module; the control module is connected to the voltage detecting module; wherein, at the power input end of the servo driver When there is no input, the first port of the first switch module is disconnected from the second port of the first switch module, and the first port of the first switch module is connected to the third port of the first switch module The voltage detecting module detects a voltage of a power input terminal of the servo driver, and when the voltage
  • the beneficial effects of the invention are: adding a first switch module, a voltage detecting module and a control module in the circuit of the servo driver, and when the voltage detecting module detects that the voltage of the power input terminal of the servo driver is greater than a preset value, the control module controls A switch module disconnects the load module of the servo drive, thereby preventing current from flowing to the load module of the servo drive, and solving the problem that the components in the servo drive load module are damaged when the input voltage is too large.
  • FIG. 1 is a schematic structural view of a first embodiment of a detecting circuit of the present invention
  • FIG. 2 is a circuit diagram of a second embodiment of the detection circuit of the present invention.
  • FIG. 3 is a circuit diagram of a third embodiment of the detecting circuit of the present invention.
  • FIG. 4 is a circuit diagram of a fourth embodiment of the detecting circuit of the present invention.
  • Figure 5 is a schematic structural view of a fifth embodiment of the detecting circuit of the present invention.
  • Figure 6 is a circuit diagram showing a sixth embodiment of the detecting circuit of the present invention.
  • Figure 7 is a schematic structural view of a seventh embodiment of the detecting circuit of the present invention.
  • Figure 8 is a block diagram showing an embodiment of a servo driver of the present invention.
  • the detection circuit of the servo driver includes a first switch module 10, a voltage detection module 11, and a control module 12.
  • the first switch module 10 includes a first port a, a second port b, and a third port c.
  • the first port a of the first switch module 10 is connected to the power input terminal 13 of the servo driver, and the second port b of the first switch module 10 is
  • the load module 14 of the servo driver is connected;
  • the voltage detecting module 11 is connected to the third port c of the first switch module 10; and
  • the control module 12 is connected to the voltage detecting module 11.
  • the first port a of the first switch module 10 when there is no input at the power input end 13 of the servo driver, the first port a of the first switch module 10 is disconnected from the second port b of the first switch module 10, and the first port a of the first switch module 10 is The third port c of the switch module 10 is connected, and the voltage detecting module 11 detects the voltage of the power input terminal 13 of the servo driver.
  • the control module 12 controls the first port a of the first switch module 10 and the first port
  • the second port b of a switch module 10 remains in an open state, otherwise, the first port a of the first switch module 10 is controlled to be connected to the second port b of the first switch module 10.
  • the first port a of the first switch module 10 is connected to the third port c of the first switch module 10 before the servo driver inputs the voltage, and the first switch module
  • the first port a of the first switch module 10 is disconnected from the second port b of the first switch module 10, and the voltage detecting module 11 is connected to the circuit while bypassing the load module 14 of the servo drive.
  • the servo driver inputs a power supply voltage.
  • the control module 12 controls the first port a of the first switch module 10 to be disconnected from the third port c of the first switch module 10.
  • the first port a of the first switch module 10 is connected to the second port b of the first switch module 10, bypassing the voltage detecting module 11, and the load module 14 of the servo driver is connected to the circuit, and the servo driver starts to work normally.
  • the control module 12 controls the first port a of the first switch module 10 to remain disconnected from the second port b of the first switch module 10, and the servo driver is Bypassing the load module 14 prevents current from flowing to the load module 14 of the servo drive, thereby preventing component damage in the servo drive load module 14 due to excessive input voltage.
  • the first switch module 20 includes a single pole double throw switch, and the first port a of the first switch module 20 is a control end.
  • the power input end of the servo driver 22 includes a first power terminal a2 and a second power terminal b2, and the first port a of the first switch module 20 is connected to the first power terminal a2.
  • the voltage detecting module 21 includes a detecting resistor 211 and a bus voltage detecting unit 212. The two ends of the detecting resistor 211 are respectively connected to the third port c and the second power terminal b2 of the first switch module 20.
  • the bus voltage detecting unit 212 includes a first detecting end a3.
  • the first detecting end b3 and the first detecting end c3, the first detecting end a3 and the second detecting end b3 are respectively connected to two detecting points of the detecting resistor 211, and the first control end c3 is connected to the first port of the first switch module 20 a.
  • the first switch module 20 may include a single-pole double-throw relay, which controls an "automatic switch" of a large current operation through a small current.
  • the bus voltage detecting unit 211 applies a control voltage to the coil of the single-pole double-throw relay, thereby controlling the contact of the relay to be in a normally open or normally closed state, thereby implementing a relationship between the voltage detecting module and the servo driver load module. Switch.
  • the independent detection circuit and the control module can also detect the voltage magnitude and control the first switch module 20.
  • the voltage detecting module 31 includes a detecting resistor 311 and a bus voltage detecting unit 312, wherein the detecting resistor 311 includes a first resistor R1, a second resistor R2, and a third resistor R3 connected in series, and a bus voltage detecting unit.
  • the first detecting end a3 and the second detecting end b3 of the 312 are respectively connected to the second resistor R2 adjacent to one end of the first resistor R1, and the third resistor R3 is adjacent to the second power end end of the power input end of the servo driver.
  • the resistor R1 is a power resistor, which can be used to suppress the surge current at the moment of servo driver power-on.
  • the bus voltage detecting unit 312 can roughly determine whether the voltage value of the servo driver passing through the detecting resistor circuit exceeds the preset voltage value by detecting the voltage across the series resistors R2 and R3.
  • the voltage detecting module 31 further includes a first capacitor C1 and a second capacitor C2, wherein the first capacitor C1 and the second capacitor C2 are respectively coupled to the second resistor R2 and the third resistor. R3 is connected in parallel.
  • the first capacitor C1 and the second capacitor C2 are respectively connected in parallel with the second resistor R2 and the third resistor R3 to function as a smooth voltage regulator, so that the bus voltage detecting unit 312 can detect a more accurate voltage. .
  • FIG. 5 is a schematic structural view of a fifth embodiment of the detecting circuit of the present invention. As shown, the detection circuit further includes a second switch module 54 and a slow start module 55.
  • the second switch module 54 includes a first port a4 and a second port b4.
  • the first port a4 of the second switch module 54 is connected to the power input 53 of the servo driver, and the second port b4 of the second switch module 54 is connected to the bus of the servo driver.
  • a capacitor 56; one end of the slow start module 55 is connected to the second port b of the first switch module 50, the other end is connected to the second port b4 of the second switch module 54;
  • the voltage detecting module 51 is connected to the bus capacitor 56 of the servo driver; the control module 52 The voltage detecting module 51 is connected.
  • the first port a4 of the second switch module 54 is disconnected from the second port b4 of the second switch module 54.
  • the voltage detecting module 51 detects the voltage across the bus capacitor 56 of the servo driver.
  • the control module 52 controls the first port a4 of the second switch module 54 to be connected to the second port b4 of the second switch module 54. Otherwise, the first port a4 controlling the second switch module 54 and the second port b4 of the second switch module 54 are kept in an off state.
  • the voltage passing through the bus capacitor can be made smooth and stable, and the surge current at the moment of power-on can be prevented from impacting the bus capacitor.
  • FIG. 6 is a circuit diagram of a sixth embodiment of the detection circuit of the present invention.
  • the second switch module 63 includes a single pole single throw switch, and the first port a4 of the second switch module 63 is a control end.
  • the power input terminal 62 of the servo driver includes a first power terminal a2 and a second power terminal b2, and the first port a4 of the second switch module 63 is connected to the first power terminal a2.
  • the slow start module 64 includes a fourth resistor R4. One end of the fourth resistor R4 is connected to the second port b of the first switch module 60, and the other end of the fourth resistor R4 is connected to the second port b4 of the second switch module 63.
  • Both ends of the bus capacitor C3 are connected to the second port b4 of the second switch 63 and the second power terminal b2 of the servo driver 62, respectively.
  • the voltage detecting module 61 includes a third detecting end a5, a fourth detecting end b5 and a second control end c5.
  • the third detecting end a5 and the fourth detecting end b5 are respectively connected to two detecting points of the bus capacitor C3, and the second control end c5
  • the first port a4 of the second switch module 63 is connected.
  • the fourth resistor R4 is a power resistor, which can resist the surge current at the initial stage of power-on and play a buffering role.
  • the second switch module 63 may include a single-pole single-throw relay.
  • the second control terminal c5 of the voltage detecting module 61 applies a control voltage to the coil of the single-pole single-throw relay, thereby controlling the contact of the relay to be in a normally open or normally closed state.
  • the fourth resistor R4 is bypassed to avoid additional large power loss caused by the resistor.
  • the second switch module 63 may further include a thyristor, which is equivalent to the switch module being closed when the thyristor is turned on, and is equivalent to being disconnected when the thyristor is not turned on, and the thyristor is suitable for the circuit of high voltage and high current. use.
  • the slow start module can be controlled to be connected and disconnected by the second switch module, so as to achieve the effect of the initial voltage of the smooth servo driver power-on.
  • the detecting circuit further includes an alarm module 70.
  • the alarm module 70 is connected to the control module 71 for outputting whether the input voltage of the servo driver is greater than a preset value to the outside world. .
  • the alarm module 70 issues an alarm signal, prompting the user that the servo driver access voltage does not match the level of the servo driver.
  • the alarm module and the control module can also be designed in the same circuit.
  • FIG. 8 is a schematic structural diagram of an embodiment of a servo driver according to the present invention.
  • the servo driver includes a rectifier circuit 80, a detection circuit 81, a bus capacitor 82, an inverter circuit 83, and a peripheral circuit 84.
  • the servo driver converts the input three-phase AC power into a DC power source through the rectifier circuit 80 and the inverter circuit 83 to supply the peripheral circuit 84 with the current required for operation.
  • the detection circuit 81 includes a first switch module, a voltage detection module, and a control module. In another embodiment, the detecting circuit 81 further includes: a second switch module, a slow start module, and an alarm module.
  • the detecting circuit 81 detects that the input power voltage is greater than the preset value, the main loop circuit is automatically cut off, so that the current directly passes through the detecting circuit 81, and the other circuit loops are prevented from damaging the bus capacitor and other circuit equipment due to excessive voltage.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Control Of Electric Motors In General (AREA)

Abstract

A detection circuit for a servo driver. The detection circuit comprises: a first switch module (10), comprising a first port (a), a second port (b) and a third port (c), the first port (a) being connected to a power source input end (13) of a servo driver, and the second port (b) being connected to a load module (14) of the servo driver; a voltage detection module (11), connected to the third port (b) of the first switch module (10); and a control module (12), connected to the voltage detection module (11), wherein when there is no input at the power source input end (13) of the servo driver, the first port (a) is disconnected from the second port (b), and the first port (a) is connected to the third port (c); the voltage detection module (11) detects a voltage of the power source input end (13) of the servo driver; and when the voltage is greater than a preset value, the control module controls the first port (a) so that same remains in a state of disconnection with the second port (b), otherwise, controls the first port (a) so that same is connected to the second port (b). By means of the method, when it is detected that a voltage of the power source input end (13) of the servo driver is greater than a preset value, the load module (14) is disconnected, which can solve the problem that an element in a load module of a servo driver is damaged when an input voltage is too great.

Description

一种伺服驱动器的检测电路及伺服驱动器 Detection circuit and servo driver of servo driver
【技术领域】[Technical Field]
本发明涉及伺服驱动器技术领域，特别是涉及一种伺服驱动器的检测电路及伺服驱动器。The present invention relates to the field of servo drive technologies, and in particular, to a detection circuit and a servo driver of a servo driver.
【背景技术】 【Background technique】
随着电子技术的不断发展，伺服驱动器得到广泛的运用。目前市场上主要有两种伺服驱动器电源规格：三相220V和三相380V，而现有伺服驱动器的母线电容耐压等级约为400V，如果误将三相380V电源电压作为220V的输入电源，则驱动器的母线电容会因为过压而***。With the continuous development of electronic technology, servo drives have been widely used. At present, there are two kinds of servo driver power supply specifications on the market: three-phase 220V and three-phase 380V, and the existing bus driver has a bus capacitor withstand voltage rating of about 400V. If the three-phase 380V power supply voltage is mistaken as the 220V input power supply, then The bus capacitance of the driver will explode due to overvoltage.
然而，目前市场上主流的伺服驱动器都是与母线电容直接相连，在任何时候，电流都是直接经过母线电容，当用户对伺服驱动器的电源规格不了解或者应用现场的电压等级和伺服驱动器的电压等级不匹配时，容易因为电源电压接错而损坏伺服驱动器。尤其是当220V级的伺服驱动器误接380V电源电压时，驱动器的母线电容会因为过压而***。However, the current mainstream servo drives on the market are directly connected to the bus capacitors. At any time, the current is directly passed through the bus capacitors. When the user does not understand the power specifications of the servo drivers or applies the voltage level of the field and the voltage of the servo driver. When the levels do not match, it is easy to damage the servo driver due to the wrong connection of the power supply voltage. Especially when the 220V servo drive is misconnected to the 380V supply voltage, the bus capacitance of the driver will explode due to overvoltage.
【发明内容】 [Summary of the Invention]
本发明主要解决的技术问题是提供一种伺服驱动器的检测电路及伺服驱动器，能够解决当输入电压过大而导致伺服驱动器负载模块中的元件损坏的问题。The technical problem to be solved by the present invention is to provide a detection circuit and a servo driver for a servo driver, which can solve the problem that components in the servo driver load module are damaged when the input voltage is too large.
为解决上述技术问题，本发明采用的一个技术方案是：提供一种伺服驱动器的检测电路，第一开关模块，所述第一开关模块包括第一端口、第二端口以及第三端口，所述第一开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第一开关模块的第二端口连接所述伺服驱动器的负载模块；电压检测模块，连接所述第一开关模块的第三端口；控制模块，连接所述电压检测模块；其中，在所述伺服驱动器的电源输入端无输入时，所述第一开关模块的第一端口与所述第一开关模块的第二端口断开，所述第一开关模块的第一端口与所述第一开关模块的第三端口连接，所述电压检测模块检测所述伺服驱动器的电源输入端电压，当所述电压大于预设值时，所述控制模块控制所述第一开关模块的第一端口与所述第一开关模块的第二端口保持断开状态，否则，控制所述第一开关模块的第一端口与所述第一开关模块的第二端口连接。In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a detection circuit of a servo driver, a first switch module, the first switch module including a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, a second port of the first switch module is connected to a load module of the servo driver, and a voltage detecting module is connected to the first switch module a third port; a control module, connected to the voltage detecting module; wherein, when there is no input at the power input end of the servo driver, the first port of the first switch module is disconnected from the second port of the first switch module Opening, the first port of the first switch module is connected to the third port of the first switch module, and the voltage detecting module detects a voltage of the power input terminal of the servo driver, when the voltage is greater than a preset value The control module controls the first port of the first switch module to remain disconnected from the second port of the first switch module; otherwise, The first port is connected to a second port of the first switch module of the first switching means is made.
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种伺服驱动器，伺服器包括：整流电路、检测电路、母线电容、逆变电路及***电路；其中，所述检测电路包括：第一开关模块，所述第一开关模块包括第一端口、第二端口以及第三端口，所述第一开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第一开关模块的第二端口连接所述伺服驱动器的负载模块；电压检测模块，连接所述第一开关模块的第三端口；控制模块，连接所述电压检测模块；其中，在所述伺服驱动器的电源输入端无输入时，所述第一开关模块的第一端口与所述第一开关模块的第二端口断开，所述第一开关模块的第一端口与所述第一开关模块的第三端口连接，所述电压检测模块检测所述伺服驱动器的电源输入端电压，当所述电压大于预设值时，所述控制模块控制所述第一开关模块的第一端口与所述第一开关模块的第二端口保持断开状态，否则，控制所述第一开关模块的第一端口与所述第一开关模块的第二端口连接。In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a servo driver, the server includes: a rectifier circuit, a detection circuit, a bus capacitor, an inverter circuit, and a peripheral circuit; wherein the detection circuit includes: a first switch module, the first switch module includes a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, and the first switch module is The second port is connected to the load module of the servo driver; the voltage detecting module is connected to the third port of the first switch module; the control module is connected to the voltage detecting module; wherein, at the power input end of the servo driver When there is no input, the first port of the first switch module is disconnected from the second port of the first switch module, and the first port of the first switch module is connected to the third port of the first switch module The voltage detecting module detects a voltage of a power input terminal of the servo driver, and when the voltage is greater than a preset value, the control module The first port of the first switch module is kept disconnected from the second port of the first switch module, otherwise, the first port of the first switch module and the second port of the first switch module are controlled Port connection.
本发明的有益效果是：在伺服驱动器的电路中新增第一开关模块、电压检测模块及控制模块，当电压检测模块检测到伺服驱动器的电源输入端电压大于预设值时，控制模块控制第一开关模块将伺服驱动器的负载模块断开，进而避免电流流向伺服驱动器的负载模块，解决当输入电压过大而导致伺服驱动器负载模块中的元件损坏的问题。The beneficial effects of the invention are: adding a first switch module, a voltage detecting module and a control module in the circuit of the servo driver, and when the voltage detecting module detects that the voltage of the power input terminal of the servo driver is greater than a preset value, the control module controls A switch module disconnects the load module of the servo drive, thereby preventing current from flowing to the load module of the servo drive, and solving the problem that the components in the servo drive load module are damaged when the input voltage is too large.
【附图说明】 [Description of the Drawings]
为了更清楚地说明本发明实施方式中的技术方案，下面将对实施方式描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work. among them:
图1是本发明检测电路的第一实施例的结构示意图；1 is a schematic structural view of a first embodiment of a detecting circuit of the present invention;
图2是本发明检测电路的第二实施例的电路示意图；2 is a circuit diagram of a second embodiment of the detection circuit of the present invention;
图3是本发明检测电路的第三实施例的电路示意图；3 is a circuit diagram of a third embodiment of the detecting circuit of the present invention;
图4是本发明检测电路的第四实施例的电路示意图；4 is a circuit diagram of a fourth embodiment of the detecting circuit of the present invention;
图5是本发明检测电路的第五实施例的结构示意图；Figure 5 is a schematic structural view of a fifth embodiment of the detecting circuit of the present invention;
图6是本发明检测电路的第六实施例的电路示意图；Figure 6 is a circuit diagram showing a sixth embodiment of the detecting circuit of the present invention;
图7是本发明检测电路的第七实施例的结构示意图；Figure 7 is a schematic structural view of a seventh embodiment of the detecting circuit of the present invention;
图8是本发明伺服驱动器的一实施例的结构示意图。Figure 8 is a block diagram showing an embodiment of a servo driver of the present invention.
【具体实施方式】【Detailed ways】
下面结合附图和实施方式对本发明进行详细说明。需要注意的是，以下描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The invention will now be described in detail in conjunction with the drawings and embodiments. It is to be noted that the embodiments described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.
图1是本发明检测电路的第一实施例的结构示意图，如图1所示，伺服驱动器的检测电路包括第一开关模块10、电压检测模块11及控制模块12。1 is a schematic structural view of a first embodiment of a detection circuit of the present invention. As shown in FIG. 1, the detection circuit of the servo driver includes a first switch module 10, a voltage detection module 11, and a control module 12.
第一开关模块10包括第一端口a、第二端口b以及第三端口c，第一开关模块10的第一端口a连接伺服驱动器的电源输入端13，第一开关模块10的第二端口b连接伺服驱动器的负载模块14；电压检测模块11，连接第一开关模块10的第三端口c；控制模块12，连接电压检测模块11。The first switch module 10 includes a first port a, a second port b, and a third port c. The first port a of the first switch module 10 is connected to the power input terminal 13 of the servo driver, and the second port b of the first switch module 10 is The load module 14 of the servo driver is connected; the voltage detecting module 11 is connected to the third port c of the first switch module 10; and the control module 12 is connected to the voltage detecting module 11.
其中，在伺服驱动器的电源输入端13无输入时，第一开关模块10的第一端口a与第一开关模块10的第二端口b断开，第一开关模块10的第一端口a与第一开关模块10的第三端口c连接，电压检测模块11检测伺服驱动器的电源输入端13的电压，当电压大于预设值时，控制模块12控制第一开关模块10的第一端口a与第一开关模块10的第二端口b保持断开状态，否则，控制第一开关模块10的第一端口a与第一开关模块10的第二端口b连接。Wherein, when there is no input at the power input end 13 of the servo driver, the first port a of the first switch module 10 is disconnected from the second port b of the first switch module 10, and the first port a of the first switch module 10 is The third port c of the switch module 10 is connected, and the voltage detecting module 11 detects the voltage of the power input terminal 13 of the servo driver. When the voltage is greater than the preset value, the control module 12 controls the first port a of the first switch module 10 and the first port The second port b of a switch module 10 remains in an open state, otherwise, the first port a of the first switch module 10 is controlled to be connected to the second port b of the first switch module 10.
在一个应用场景中，当预设电压值为220V时，在伺服驱动器输入电压之前，将第一开关模块10的第一端口a与第一开关模块10的第三端口c连接，第一开关模块10的第一端口a与第一开关模块10的第二端口b断开，电压检测模块11接入电路的同时，将伺服驱动器的负载模块14旁路。伺服驱动器输入电源电压，当电压检测模块11检测到伺服驱动器的输入电压约等于220V时，控制模块12控制第一开关模块10的第一端口a与第一开关模块10的第三端口c断开，第一开关模块10的第一端口a与第一开关模块10的第二端口b连接，将电压检测模块11旁路，同时伺服驱动器的负载模块14连接到电路中，伺服驱动器开始正常工作。当电压检测模块11检测到伺服驱动器的输入电压大于220V时，控制模块12控制第一开关模块10的第一端口a与第一开关模块10的第二端口b保持断开状态，将伺服驱动器的负载模块14旁路，可以避免电流流向伺服驱动器的负载模块14，进而防止由于输入电压过大，导致伺服驱动器负载模块14中的元件损坏。In an application scenario, when the preset voltage value is 220V, the first port a of the first switch module 10 is connected to the third port c of the first switch module 10 before the servo driver inputs the voltage, and the first switch module The first port a of the first switch module 10 is disconnected from the second port b of the first switch module 10, and the voltage detecting module 11 is connected to the circuit while bypassing the load module 14 of the servo drive. The servo driver inputs a power supply voltage. When the voltage detecting module 11 detects that the input voltage of the servo driver is approximately equal to 220V, the control module 12 controls the first port a of the first switch module 10 to be disconnected from the third port c of the first switch module 10. The first port a of the first switch module 10 is connected to the second port b of the first switch module 10, bypassing the voltage detecting module 11, and the load module 14 of the servo driver is connected to the circuit, and the servo driver starts to work normally. When the voltage detecting module 11 detects that the input voltage of the servo driver is greater than 220V, the control module 12 controls the first port a of the first switch module 10 to remain disconnected from the second port b of the first switch module 10, and the servo driver is Bypassing the load module 14 prevents current from flowing to the load module 14 of the servo drive, thereby preventing component damage in the servo drive load module 14 due to excessive input voltage.
通过上述实施方式，可以解决当输入电压过大而导致伺服驱动器负载模块中的元件损坏的问题。With the above embodiment, it is possible to solve the problem that the components in the servo driver load module are damaged when the input voltage is too large.
参考图2，图2是本发明检测电路的第二实施例的电路示意图。在本实施例中，第一开关模块20包括单刀双掷开关，第一开关模块20的第一端口a为控制端。伺服驱动器22的电源输入端包括第一电源端a2和第二电源端b2，第一开关模块20的第一端口a连接第一电源端a2。电压检测模块21包括检测电阻211和母线电压检测单元212，检测电阻211两端分别连接第一开关模块20的第三端口c与第二电源端b2，母线电压检测单元212包括第一检测端a3、第二检测端b3以及第一控制端c3，第一检测端a3、第二检测端b3分别连接检测电阻211的两个检测点，第一控制端c3连接第一开关模块20的第一端口a。其中，第一开关模块20可以包括单刀双掷继电器，通过小电流去控制大电流运作的一种“自动开关”。在本实施例中，通过母线电压检测单元211对单刀双掷继电器的线圈施加控制电压，进而控制继电器的触点处于常开或常闭状态，进而实现电压检测模块与伺服驱动器负载模块之间的切换。在其他实施例中，也可以由独立的检测电路及控制模块去检测电压大小及控制第一开关模块20。Referring to Figure 2, there is shown a circuit diagram of a second embodiment of the detection circuit of the present invention. In this embodiment, the first switch module 20 includes a single pole double throw switch, and the first port a of the first switch module 20 is a control end. The power input end of the servo driver 22 includes a first power terminal a2 and a second power terminal b2, and the first port a of the first switch module 20 is connected to the first power terminal a2. The voltage detecting module 21 includes a detecting resistor 211 and a bus voltage detecting unit 212. The two ends of the detecting resistor 211 are respectively connected to the third port c and the second power terminal b2 of the first switch module 20. The bus voltage detecting unit 212 includes a first detecting end a3. The first detecting end b3 and the first detecting end c3, the first detecting end a3 and the second detecting end b3 are respectively connected to two detecting points of the detecting resistor 211, and the first control end c3 is connected to the first port of the first switch module 20 a. The first switch module 20 may include a single-pole double-throw relay, which controls an "automatic switch" of a large current operation through a small current. In this embodiment, the bus voltage detecting unit 211 applies a control voltage to the coil of the single-pole double-throw relay, thereby controlling the contact of the relay to be in a normally open or normally closed state, thereby implementing a relationship between the voltage detecting module and the servo driver load module. Switch. In other embodiments, the independent detection circuit and the control module can also detect the voltage magnitude and control the first switch module 20.
通过上述实施方式，可以在电压检测模块与伺服驱动器负载模块之间来回切换，以实现保护伺服驱动器负载模块的安全。Through the above embodiments, it is possible to switch back and forth between the voltage detecting module and the servo driver load module to secure the servo driver load module.
参考图3，图3是本发明检测电路的第三实施例的电路示意图。如图3所示，电压检测模块31包括检测电阻311和母线电压检测单元312，其中，检测电阻311包括依序串联的第一电阻R1、第二电阻R2以及第三电阻R3，母线电压检测单元312的第一检测端a3、第二检测端b3分别连接第二电阻R2邻近第一电阻R1一端、第三电阻R3邻近伺服驱动器的电源输入端的第二电源端一端。其中，电阻R1为功率电阻，可用于抑制伺服驱动器上电瞬间的浪涌电流。母线电压检测单元312通过检测串联电阻R2及R3两端的电压，可以粗略的判断出通过检测电阻电路的伺服驱动器的电压值是否超过预设电压值。Referring to Figure 3, there is shown a circuit diagram of a third embodiment of the detection circuit of the present invention. As shown in FIG. 3, the voltage detecting module 31 includes a detecting resistor 311 and a bus voltage detecting unit 312, wherein the detecting resistor 311 includes a first resistor R1, a second resistor R2, and a third resistor R3 connected in series, and a bus voltage detecting unit. The first detecting end a3 and the second detecting end b3 of the 312 are respectively connected to the second resistor R2 adjacent to one end of the first resistor R1, and the third resistor R3 is adjacent to the second power end end of the power input end of the servo driver. Among them, the resistor R1 is a power resistor, which can be used to suppress the surge current at the moment of servo driver power-on. The bus voltage detecting unit 312 can roughly determine whether the voltage value of the servo driver passing through the detecting resistor circuit exceeds the preset voltage value by detecting the voltage across the series resistors R2 and R3.
在另一实施例中，如图4所示，电压检测模块31进一步包括第一电容C1和第二电容C2，其中，第一电容C1、第二电容C2分别与第二电阻R2以及第三电阻R3并联。在本实施例中，第一电容C1及第二电容C2分别与第二电阻R2以及第三电阻R3并联，起到平滑稳压的作用，可以使得母线电压检测单元312检测到更为准确的电压。In another embodiment, as shown in FIG. 4, the voltage detecting module 31 further includes a first capacitor C1 and a second capacitor C2, wherein the first capacitor C1 and the second capacitor C2 are respectively coupled to the second resistor R2 and the third resistor. R3 is connected in parallel. In this embodiment, the first capacitor C1 and the second capacitor C2 are respectively connected in parallel with the second resistor R2 and the third resistor R3 to function as a smooth voltage regulator, so that the bus voltage detecting unit 312 can detect a more accurate voltage. .
参考图5，图5是本发明检测电路的第五实施例的结构示意图。如图所示，检测电路还包括第二开关模块54及缓启动模块55。Referring to FIG. 5, FIG. 5 is a schematic structural view of a fifth embodiment of the detecting circuit of the present invention. As shown, the detection circuit further includes a second switch module 54 and a slow start module 55.
第二开关模块54包括第一端口a4和第二端口b4，第二开关模块54的第一端口a4连接伺服驱动器的电源输入端53，第二开关模块54的第二端口b4连接伺服驱动器的母线电容56；缓启动模块55的一端连接第一开关模块50的第二端口b，另一端连接第二开关模块54的第二端口b4；电压检测模块51连接伺服驱动器的母线电容56；控制模块52连接电压检测模块51。The second switch module 54 includes a first port a4 and a second port b4. The first port a4 of the second switch module 54 is connected to the power input 53 of the servo driver, and the second port b4 of the second switch module 54 is connected to the bus of the servo driver. a capacitor 56; one end of the slow start module 55 is connected to the second port b of the first switch module 50, the other end is connected to the second port b4 of the second switch module 54; the voltage detecting module 51 is connected to the bus capacitor 56 of the servo driver; the control module 52 The voltage detecting module 51 is connected.
其中，当第一开关模块50的第一端口a与第一开关模块50的第二端口b连接时，第二开关模块54的第一端口a4与第二开关模块54的第二端口b4断开，电压检测模块51检测伺服驱动器的母线电容56两端的电压，在电压达到预设值时，控制模块52控制第二开关模块54的第一端口a4与第二开关模块54的第二端口b4连接，否则控制第二开关模块54的第一端口a4与第二开关模块54的第二端口b4保持断开状态。When the first port a of the first switch module 50 is connected to the second port b of the first switch module 50, the first port a4 of the second switch module 54 is disconnected from the second port b4 of the second switch module 54. The voltage detecting module 51 detects the voltage across the bus capacitor 56 of the servo driver. When the voltage reaches a preset value, the control module 52 controls the first port a4 of the second switch module 54 to be connected to the second port b4 of the second switch module 54. Otherwise, the first port a4 controlling the second switch module 54 and the second port b4 of the second switch module 54 are kept in an off state.
通过上述实施方式，可以使得通过母线电容的电压变得平滑稳定，避免上电瞬间的浪涌电流对母线电容带来冲击。According to the above embodiment, the voltage passing through the bus capacitor can be made smooth and stable, and the surge current at the moment of power-on can be prevented from impacting the bus capacitor.
参考图6，图6是本发明检测电路的第六实施例的电路示意图。在本实施例中，第二开关模块63包括单刀单掷开关，第二开关模块63的第一端口a4为控制端。伺服驱动器的电源输入端62包括第一电源端a2和第二电源端b2，第二开关模块63的第一端口a4连接第一电源端a2。缓启动模块64包括第四电阻R4，第四电阻R4的一端连接第一开关模块60的第二端口b，第四电阻R4的另一端连接第二开关模块63的第二端口b4。母线电容C3的两端分别连接第二开关63的第二端口b4以及伺服驱动器62的第二电源端b2。电压检测模块61包括第三检测端a5、第四检测端b5以及第二控制端c5，第三检测端a5、第四检测端b5分别连接母线电容C3的两个检测点，第二控制端c5连接第二开关模块63的第一端口a4。其中，第四电阻R4为功率电阻，可以抵制上电初期的浪涌电流，起到缓冲作用。第二开关模块63可以包括单刀单掷继电器，通过电压检测模块61的第二控制端c5对单刀单掷继电器的线圈施加控制电压，进而控制继电器的触点处于常开或常闭状态，当检测到母线电容C3两端的电压达到预设值时，将第四电阻R4旁路，避免电阻造成额外较大的功率损耗。在另一实施例中，第二开关模块63还可以包括晶闸管，当晶闸管导通时相当于开关模块闭合，当晶闸管不导通时相当于开关模块断开，晶闸管适合在高压大电流的电路中使用。Referring to Figure 6, Figure 6 is a circuit diagram of a sixth embodiment of the detection circuit of the present invention. In this embodiment, the second switch module 63 includes a single pole single throw switch, and the first port a4 of the second switch module 63 is a control end. The power input terminal 62 of the servo driver includes a first power terminal a2 and a second power terminal b2, and the first port a4 of the second switch module 63 is connected to the first power terminal a2. The slow start module 64 includes a fourth resistor R4. One end of the fourth resistor R4 is connected to the second port b of the first switch module 60, and the other end of the fourth resistor R4 is connected to the second port b4 of the second switch module 63. Both ends of the bus capacitor C3 are connected to the second port b4 of the second switch 63 and the second power terminal b2 of the servo driver 62, respectively. The voltage detecting module 61 includes a third detecting end a5, a fourth detecting end b5 and a second control end c5. The third detecting end a5 and the fourth detecting end b5 are respectively connected to two detecting points of the bus capacitor C3, and the second control end c5 The first port a4 of the second switch module 63 is connected. Among them, the fourth resistor R4 is a power resistor, which can resist the surge current at the initial stage of power-on and play a buffering role. The second switch module 63 may include a single-pole single-throw relay. The second control terminal c5 of the voltage detecting module 61 applies a control voltage to the coil of the single-pole single-throw relay, thereby controlling the contact of the relay to be in a normally open or normally closed state. When the voltage across the bus capacitor C3 reaches a preset value, the fourth resistor R4 is bypassed to avoid additional large power loss caused by the resistor. In another embodiment, the second switch module 63 may further include a thyristor, which is equivalent to the switch module being closed when the thyristor is turned on, and is equivalent to being disconnected when the thyristor is not turned on, and the thyristor is suitable for the circuit of high voltage and high current. use.
通过上述实施方式，可以通过第二开关模块控制缓启动模块接入及断开，以实现平稳伺服驱动器上电初期电压的作用。Through the above implementation manner, the slow start module can be controlled to be connected and disconnected by the second switch module, so as to achieve the effect of the initial voltage of the smooth servo driver power-on.
图7是本发明检测电路的第七实施例的结构示意图，检测电路还包括报警模块70，报警模块70与控制模块71连接，用于向外界输出伺服驱动器的输入电压是否大于预设值的结果。当检测出伺服驱动器的电源输入端电压大于预设值时，报警模块70发出报警信号，提示用户伺服驱动器接入电压与伺服驱动器的等级不匹配。在其他实施例中，也可以将报警模块与控制模块设计在同一电路中。7 is a schematic structural diagram of a seventh embodiment of the detecting circuit of the present invention. The detecting circuit further includes an alarm module 70. The alarm module 70 is connected to the control module 71 for outputting whether the input voltage of the servo driver is greater than a preset value to the outside world. . When it is detected that the voltage of the power input terminal of the servo driver is greater than a preset value, the alarm module 70 issues an alarm signal, prompting the user that the servo driver access voltage does not match the level of the servo driver. In other embodiments, the alarm module and the control module can also be designed in the same circuit.
参考图8，图8是本发明伺服驱动器的一实施例的结构示意图，本实施例中，伺服驱动器包括：整流电路80、检测电路81、母线电容82、逆变电路83及***电路84。伺服驱动器通过整流电路80及逆变电路83将输入的三相交流电源转换为直流电源为***电路84提供工作所需电流。其中，检测电路81包括第一开关模块、电压检测模块及控制模块。在另一实施例中，检测电路81进一步包括：第二开关模块、缓启动模块及报警模块。该检测电路中的各种电路在上述实施例中有详细描述，请参考上述相关内容，在此不再赘叙。当检测电路81检测到输入电源电压大于预设值时，会自动切断主回路电路，使电流直接通过检测电路81，而将其它电路回路，避免由于电压过大将母线电容及其它电路设备损坏。Referring to FIG. 8, FIG. 8 is a schematic structural diagram of an embodiment of a servo driver according to the present invention. In this embodiment, the servo driver includes a rectifier circuit 80, a detection circuit 81, a bus capacitor 82, an inverter circuit 83, and a peripheral circuit 84. The servo driver converts the input three-phase AC power into a DC power source through the rectifier circuit 80 and the inverter circuit 83 to supply the peripheral circuit 84 with the current required for operation. The detection circuit 81 includes a first switch module, a voltage detection module, and a control module. In another embodiment, the detecting circuit 81 further includes: a second switch module, a slow start module, and an alarm module. The various circuits in the detection circuit are described in detail in the above embodiments. Please refer to the above related content, which is not described herein. When the detecting circuit 81 detects that the input power voltage is greater than the preset value, the main loop circuit is automatically cut off, so that the current directly passes through the detecting circuit 81, and the other circuit loops are prevented from damaging the bus capacitor and other circuit equipment due to excessive voltage.
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims (14)

  1. 一种伺服驱动器的检测电路，其中，所述检测电路包括：A detection circuit for a servo driver, wherein the detection circuit comprises:
    第一开关模块，所述第一开关模块包括第一端口、第二端口以及第三端口，所述第一开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第一开关模块的第二端口连接所述伺服驱动器的负载模块；a first switch module, the first switch module includes a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, and the first switch module is The second port is connected to the load module of the servo driver;
    电压检测模块，连接所述第一开关模块的第三端口；a voltage detecting module, connected to the third port of the first switch module;
    控制模块，连接所述电压检测模块；a control module, connected to the voltage detecting module;
    其中，在所述伺服驱动器的电源输入端无输入时，所述第一开关模块的第一端口与所述第一开关模块的第二端口断开，所述第一开关模块的第一端口与所述第一开关模块的第三端口连接，所述电压检测模块检测所述伺服驱动器的电源输入端电压，当所述电压大于预设值时，所述控制模块控制所述第一开关模块的第一端口与所述第一开关模块的第二端口保持断开状态，否则，控制所述第一开关模块的第一端口与所述第一开关模块的第二端口连接。Wherein, when there is no input at the power input end of the servo driver, the first port of the first switch module is disconnected from the second port of the first switch module, and the first port of the first switch module is The third port of the first switch module is connected, the voltage detecting module detects a voltage of a power input end of the servo driver, and when the voltage is greater than a preset value, the control module controls the first switch module. The first port is kept disconnected from the second port of the first switch module; otherwise, the first port of the first switch module is controlled to be connected to the second port of the first switch module.
  2. 根据权利要求1所述的检测电路，其中，The detecting circuit according to claim 1, wherein
    所述第一开关模块包括单刀双掷开关，所述第一开关模块的第一端口为控制端；The first switch module includes a single-pole double-throw switch, and the first port of the first switch module is a control end;
    所述伺服驱动器的电源输入端包括第一电源端和第二电源端，所述第一开关模块的第一端口连接所述第一电源端；The power input end of the servo driver includes a first power terminal and a second power terminal, and the first port of the first switch module is connected to the first power terminal;
    所述电压检测模块包括检测电阻和母线电压检测单元，所述检测电阻两端分别连接所述第一开关模块的第三端口与所述第二电源端，所述母线电压检测单元包括第一检测端、第二检测端以及第一控制端，所述第一检测端、所述第二检测端分别连接所述检测电阻的两个检测点，所述第一控制端连接所述第一开关模块的第一端口。The voltage detecting module includes a detecting resistor and a bus voltage detecting unit, wherein the detecting resistor is respectively connected to the third port of the first switch module and the second power terminal, and the bus voltage detecting unit includes the first detecting a first detecting end and a second detecting end respectively connected to two detecting points of the detecting resistor, wherein the first control end is connected to the first switch module The first port.
  3. 根据权利要求2所述的检测电路，其中，The detecting circuit according to claim 2, wherein
    所述检测电阻包括依序串联的第一电阻、第二电阻以及第三电阻，所述母线电压检测单元的所述第一检测端、所述第二检测端分别连接所述第二电阻邻近所述第一电阻一端、所述第三电阻邻近所述伺服驱动器的电源输入端的第二电源端。The detecting resistor includes a first resistor, a second resistor, and a third resistor connected in series, and the first detecting end and the second detecting end of the bus voltage detecting unit are respectively connected to the second resistor adjacent to the second resistor One end of the first resistor, the third resistor is adjacent to the second power terminal of the power input end of the servo driver.
  4. 根据权利要求3所述的检测电路，其中，The detecting circuit according to claim 3, wherein
    所述电压检测模块包括第一电容和第二电容，所述第一电容、所述第二电容分别与所述第二电阻以及所述第三电阻并联。The voltage detecting module includes a first capacitor and a second capacitor, and the first capacitor and the second capacitor are respectively connected in parallel with the second resistor and the third resistor.
  5. 根据权利要求1所述的检测电路，其中，所述检测电路包括：The detection circuit of claim 1 wherein said detection circuit comprises:
    第二开关模块，包括两个端口，所述第二开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第二开关模块的第二端口连接所述伺服驱动器的母线电容；a second switch module includes two ports, a first port of the second switch module is connected to a power input end of the servo driver, and a second port of the second switch module is connected to a bus capacitor of the servo driver;
    缓启动模块，包括两个端口，所述缓启动模块的第一端口连接所述第一开关模块的第二端口，所述缓启动模块的第二端口连接所述第二开关模块的第二端口；a slow start module includes two ports, a first port of the slow start module is connected to a second port of the first switch module, and a second port of the slow start module is connected to a second port of the second switch module ;
    电压检测模块，连接所述伺服驱动器的母线电容；a voltage detecting module, connected to a bus capacitor of the servo driver;
    控制模块，连接所述电压检测模块。A control module is connected to the voltage detecting module.
    其中，当所述第一开关模块的第一端口与所述第一开关模块的第二端口连接时，所述第二开关模块的第一端口与所述第二开关模块的第二端口断开，所述电压检测模块检测所述伺服驱动器的母线电容两端的电压，在所述电压达到预设值时，所述控制模块控制所述第二开关模块的第一端口与所述第二开关模块的第二端口连接，否则控制所述第二开关模块的第一端口与所述第二开关模块的第二端口保持断开状态。The first port of the second switch module is disconnected from the second port of the second switch module when the first port of the first switch module is connected to the second port of the first switch module The voltage detecting module detects a voltage across the bus capacitor of the servo driver, and when the voltage reaches a preset value, the control module controls the first port and the second switch module of the second switch module The second port is connected, otherwise the first port of the second switch module is controlled to remain disconnected from the second port of the second switch module.
  6. 根据权利要求5所述的检测电路，其中，The detecting circuit according to claim 5, wherein
    所述第二开关模块包括单刀单掷开关，所述第二开关模块的第一端口为控制端；The second switch module includes a single-pole single-throw switch, and the first port of the second switch module is a control end;
    所述伺服驱动器的电源输入端包括第一电源端和第二电源端，所述第二开关模块的第一端口连接所述第一电源端；The power input end of the servo driver includes a first power terminal and a second power terminal, and the first port of the second switch module is connected to the first power terminal;
    所述缓启动模块包括第四电阻，所述第四电阻的第一端口连接所述第一开关模块的第二端口，所述第四电阻的第二端口连接所述第二开关模块的第二端口；The slow start module includes a fourth resistor, a first port of the fourth resistor is connected to a second port of the first switch module, and a second port of the fourth resistor is connected to a second port of the second switch module port;
    所述母线电容的两端分别连接所述第二开关的第二端口及所述伺服驱动器的所述第二电源端；The two ends of the bus capacitor are respectively connected to the second port of the second switch and the second power terminal of the servo driver;
    所述电压检测模块包括第三检测端、第四检测端以及第二控制端，所述第三检测端、所述第四检测端分别连接所述母线电容的两个检测点，所述第二控制端连接所述第二开关模块的第一端口。The voltage detecting module includes a third detecting end, a fourth detecting end, and a second control end, where the third detecting end and the fourth detecting end respectively connect two detecting points of the bus capacitor, the second The control terminal is connected to the first port of the second switch module.
  7. 根据权利要求1所述的检测电路，其中，所述检测电路包括：The detection circuit of claim 1 wherein said detection circuit comprises:
    报警模块，所述报警模块与所述控制模块连接，用于向外界输出所述伺服驱动器的输入电压是否大于预设值的结果。And an alarm module, wherein the alarm module is connected to the control module, and is configured to output to the outside a result of whether the input voltage of the servo driver is greater than a preset value.
  8. 一种伺服驱动器，其中，所述伺服器包括：整流电路、检测电路、母线电容、逆变电路及***电路；A servo driver, wherein the server comprises: a rectifier circuit, a detection circuit, a bus capacitor, an inverter circuit, and a peripheral circuit;
    其中，所述检测电路包括：The detection circuit includes:
    第一开关模块，所述第一开关模块包括第一端口、第二端口以及第三端口，所述第一开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第一开关模块的第二端口连接所述伺服驱动器的负载模块；a first switch module, the first switch module includes a first port, a second port, and a third port, a first port of the first switch module is connected to a power input end of the servo driver, and the first switch module is The second port is connected to the load module of the servo driver;
    电压检测模块，连接所述第一开关模块的第三端口；a voltage detecting module, connected to the third port of the first switch module;
    控制模块，连接所述电压检测模块；a control module, connected to the voltage detecting module;
    其中，在所述伺服驱动器的电源输入端无输入时，所述第一开关模块的第一端口与所述第一开关模块的第二端口断开，所述第一开关模块的第一端口与所述第一开关模块的第三端口连接，所述电压检测模块检测所述伺服驱动器的电源输入端电压，当所述电压大于预设值时，所述控制模块控制所述第一开关模块的第一端口与所述第一开关模块的第二端口保持断开状态，否则，控制所述第一开关模块的第一端口与所述第一开关模块的第二端口连接。Wherein, when there is no input at the power input end of the servo driver, the first port of the first switch module is disconnected from the second port of the first switch module, and the first port of the first switch module is The third port of the first switch module is connected, the voltage detecting module detects a voltage of a power input end of the servo driver, and when the voltage is greater than a preset value, the control module controls the first switch module. The first port is kept disconnected from the second port of the first switch module; otherwise, the first port of the first switch module is controlled to be connected to the second port of the first switch module.
  9. 根据权利要求8所述的伺服驱动器，其中，The servo driver according to claim 8, wherein
    所述第一开关模块包括单刀双掷开关，所述第一开关模块的第一端口为控制端；The first switch module includes a single-pole double-throw switch, and the first port of the first switch module is a control end;
    所述伺服驱动器的电源输入端包括第一电源端和第二电源端，所述第一开关模块的第一端口连接所述第一电源端；The power input end of the servo driver includes a first power terminal and a second power terminal, and the first port of the first switch module is connected to the first power terminal;
    所述电压检测模块包括检测电阻和母线电压检测单元，所述检测电阻两端分别连接所述第一开关模块的第三端口与所述第二电源端，所述母线电压检测单元包括第一检测端、第二检测端以及第一控制端，所述第一检测端、所述第二检测端分别连接所述检测电阻的两个检测点，所述第一控制端连接所述第一开关模块的第一端口。The voltage detecting module includes a detecting resistor and a bus voltage detecting unit, wherein the detecting resistor is respectively connected to the third port of the first switch module and the second power terminal, and the bus voltage detecting unit includes the first detecting a first detecting end and a second detecting end respectively connected to two detecting points of the detecting resistor, wherein the first control end is connected to the first switch module The first port.
  10. 根据权利要求9所述的伺服驱动器，其中，The servo driver according to claim 9, wherein
    所述检测电阻包括依序串联的第一电阻、第二电阻以及第三电阻，所述母线电压检测单元的所述第一检测端、所述第二检测端分别连接所述第二电阻邻近所述第一电阻一端、所述第三电阻邻近所述伺服驱动器的电源输入端的第二电源端一端。The detecting resistor includes a first resistor, a second resistor, and a third resistor connected in series, and the first detecting end and the second detecting end of the bus voltage detecting unit are respectively connected to the second resistor adjacent to the second resistor One end of the first resistor, the third resistor is adjacent to a second power end of the power input end of the servo driver.
  11. 根据权利要求10所述的伺服驱动器，其中，The servo driver according to claim 10, wherein
    所述电压检测模块包括第一电容和第二电容，所述第一电容、所述第二电容分别与所述第二电阻以及所述第三电阻并联。The voltage detecting module includes a first capacitor and a second capacitor, and the first capacitor and the second capacitor are respectively connected in parallel with the second resistor and the third resistor.
  12. 根据权利要求8所述的伺服驱动器，其中，所述检测电路包括：The servo drive of claim 8 wherein said detection circuit comprises:
    第二开关模块，包括两个端口，所述第二开关模块的第一端口连接所述伺服驱动器的电源输入端，所述第二开关模块的第二端口连接所述伺服驱动器的母线电容；a second switch module includes two ports, a first port of the second switch module is connected to a power input end of the servo driver, and a second port of the second switch module is connected to a bus capacitor of the servo driver;
    缓启动模块，包括两个端口，所述缓启动模块的第一端口连接所述第一开关模块的第二端口，所述缓启动模块的第二端口连接所述第二开关模块的第二端口；a slow start module includes two ports, a first port of the slow start module is connected to a second port of the first switch module, and a second port of the slow start module is connected to a second port of the second switch module ;
    电压检测模块，连接所述伺服驱动器的母线电容；a voltage detecting module, connected to a bus capacitor of the servo driver;
    控制模块，连接所述电压检测模块。A control module is connected to the voltage detecting module.
    其中，当所述第一开关模块的第一端口与所述第一开关模块的第二端口连接时，所述第二开关模块的所述第一端口与所述第二开关模块的第二端口断开，所述电压检测模块检测所述伺服驱动器的母线电容两端的电压，在所述电压达到预设值时，所述控制模块控制所述第二开关模块的第一端口与所述第二开关模块的第二端口连接，否则控制所述第二开关模块的第一端口与所述第二开关模块的第二端口保持断开状态。Wherein, when the first port of the first switch module is connected to the second port of the first switch module, the first port of the second switch module and the second port of the second switch module Disconnecting, the voltage detecting module detects a voltage across the bus capacitor of the servo driver, and when the voltage reaches a preset value, the control module controls the first port and the second of the second switch module The second port of the switch module is connected, otherwise the first port of the second switch module is controlled to remain disconnected from the second port of the second switch module.
  13. 根据权利要求12所述的伺服驱动器，其中，The servo driver according to claim 12, wherein
    所述第二开关模块包括单刀单掷开关，所述第二开关模块的第一端口为控制端；The second switch module includes a single-pole single-throw switch, and the first port of the second switch module is a control end;
    所述伺服驱动器的电源输入端包括第一电源端和第二电源端，所述第二开关模块的第一端口连接所述第一电源端；The power input end of the servo driver includes a first power terminal and a second power terminal, and the first port of the second switch module is connected to the first power terminal;
    所述缓启动模块包括第四电阻，所述第四电阻的第一端口连接所述第一开关模块的第二端口，所述第四电阻的第二端口连接所述第二开关模块的第二端口；The slow start module includes a fourth resistor, a first port of the fourth resistor is connected to a second port of the first switch module, and a second port of the fourth resistor is connected to a second port of the second switch module port;
    所述母线电容的两端分别连接所述第二开关的第二端口及所述伺服驱动器的所述第二电源端；The two ends of the bus capacitor are respectively connected to the second port of the second switch and the second power terminal of the servo driver;
    所述电压检测模块包括第三检测端、第四检测端以及第二控制端，所述第三检测端、所述第四检测端分别连接所述母线电容的两个检测点，所述第二控制端连接所述第二开关模块的第一端口。The voltage detecting module includes a third detecting end, a fourth detecting end, and a second control end, where the third detecting end and the fourth detecting end respectively connect two detecting points of the bus capacitor, the second The control terminal is connected to the first port of the second switch module.
  14. 根据权利要求8所述的伺服驱动器，其中，所述检测电路包括：The servo drive of claim 8 wherein said detection circuit comprises:
    报警模块，所述报警模块与所述控制模块连接，用于向外界输出所述伺服驱动器的输入电压是否大于预设值的结果。And an alarm module, wherein the alarm module is connected to the control module, and is configured to output to the outside a result of whether the input voltage of the servo driver is greater than a preset value.
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