KR0124684Y1 - Servo motor protecting circuit for remaining voltage - Google Patents

Servo motor protecting circuit for remaining voltage Download PDF

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Publication number
KR0124684Y1
KR0124684Y1 KR2019940019637U KR19940019637U KR0124684Y1 KR 0124684 Y1 KR0124684 Y1 KR 0124684Y1 KR 2019940019637 U KR2019940019637 U KR 2019940019637U KR 19940019637 U KR19940019637 U KR 19940019637U KR 0124684 Y1 KR0124684 Y1 KR 0124684Y1
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South Korea
Prior art keywords
switch
servo
emergency stop
servo drive
servo motor
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KR2019940019637U
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Korean (ko)
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KR960009358U (en
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최종철
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김재복
주식회사기아기공
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Publication of KR960009358U publication Critical patent/KR960009358U/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/42—Servomotor, servo controller kind till VSS
    • G05B2219/42268—Safety, excess in error

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)

Abstract

본 고안은 일반공작기게에 설치되는 서보모터구동 방지회로의 개량에 대한 것으로, 서보모터(M)를 구동시키는 유니트인 서보드라이브(SD)의 입출력단에 비상정지용 릴레이모듈(ERM)을 구성하는 서보드라이브 스위치(MS2) 및 모터스위치(MS3)의 연동접점(S2)(S3)를 각각 설치하여 서보모터(M)로 공급되는 불요전원을 원천적으로 차단토록 함으로써 비상사태 발발시 기계의 훼손 및 안전사고를 미연에 예방할 수 있도록 한 것이다.The present invention relates to an improvement of the servomotor driving prevention circuit installed in a general machine tool, and the servo which constitutes an emergency stop relay module (ERM) at the input / output terminal of the servo drive (SD), a unit for driving the servomotor (M). By installing interlocking contacts S2 and S3 of the drive switch MS2 and the motor switch MS3, respectively, the unnecessary power supplied to the servo motor M is cut off at the source, thereby causing damage to the machine and safety accidents during an emergency. It is to be prevented in advance.

Description

잔류전압에 의한 서보모터 구동방지회로Servo motor driving prevention circuit by residual voltage

제1도는 종래 일반 공작기계의 비상정지회로 설치구성도.1 is an emergency stop circuit installation configuration of a conventional general machine tool.

제2도는 본 고안의 비상정지회로 설치구성도.2 is an emergency stop circuit installation configuration of the present invention.

제3도는 본 고안의 상세회로도.3 is a detailed circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

CNC : 수치제어장치 MS2 : 서보드라이브 스위치CNC: Numerical Control Device MS2: Servo Drive Switch

SD : 서보드라이브 MS3 : 모터스위치SD: Servo Drive MS3: Motor Switch

PB1 : 기동스위치 S1, S2, S3 : 연동접점PB1: Start switch S1, S2, S3: Interlocking contact

PB2 : 비상정지 스위치 R1-a: 비상정지릴레이 a접점PB2: Emergency stop switch R 1-a : Emergency stop relay a contact

ERM : 릴레이모듈 E-a: 외부비상정지접점ERM: Relay module E -a : External emergency stop contact

R1 : 비상정지릴레이 M : 서보모터R1: Emergency stop relay M: Servo motor

본 고안은 일반공작기계에 적용되는 전기회로에 있어서 잔류전압이나 고장전류에 의한 서보모터의 구동을 방지하기 위한 회로에 대한 것이다.The present invention is a circuit for preventing the drive of the servo motor by the residual voltage or fault current in the electric circuit applied to the general machine tool.

종래에는 제1도의 예시도와 같이 공작기계의 비상정지회로를 설치하여 공작기계를 정지시키고자 할 때 비상정지 스위치를 누르거나 기타 위험상태가 발생하면 기계 자체적으로 비상정지용 릴레이를 동작시켜 수치제어장치의 동작을 중지시키고 동시에 서보드라이브의 전원을 차단시키는 방법에 의해 모터를 정지시키도록 회로를 구성해 왔었다. 그러나 이러한 모터비상정지회로 구성방식은 비상사태 발생시 서보드라이브에 공급되는 전원만을 차단하도록 되어 있어 비록 서보드라이브의 공급전원이 차단되더라도 전류전압 및 외적요인에 의한 전원공급 또는 서브드라이브의 오동작으로 인해 모터에 전류가 인가될시 기계를 정지시킬 수 없어 이로인한 기계의 충돌이나 안전사고를 유발할 수 있는 사고요인이 항시 내재해 있었다.Conventionally, as shown in FIG. 1, when the emergency stop circuit of the machine tool is installed to stop the machine tool, when the emergency stop switch is pressed or other dangerous condition occurs, the machine itself operates the emergency stop relay to operate the numerical control device. The circuit has been configured to stop the motor by stopping the operation and simultaneously shutting off the power of the servo drive. However, the motor emergency stop circuit configuration is designed to shut off only the power supplied to the servo drive in case of emergency. Even if the power supply of the servo drive is cut off, the motor may be damaged due to power supply or malfunction of the subdrive due to current voltage and external factors. There was always an accident factor that could not stop the machine when a current was applied, which could cause the machine to crash or cause a safety accident.

이에 본 고안에서는 서보드라이브의 공급전원 차단시 서보드라이브로부터 모터에 공급되는 잔류전원을 사전에 차단하기 위해 수치제어기, 서보드라이브, 서보모터가 비상스위치 입력으로부터 릴레이모듈에 의해 연동접점이 오프되면서 전원이 차단될 수 있도록 하여 기계의 훼손 및 안전사고를 미연에 방지하기 위한 목적을 가지고 있다.Therefore, in the present invention, when the power supply of the servo drive is cut off, the numerical controller, the servo drive, and the servomotor are turned off by the relay module from the emergency switch input to shut off the residual power supplied to the motor from the servo drive. It can be blocked to prevent damage to the machine and safety accidents.

이하, 본 고안은 첨부예시 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 고안의 서보모터 구동방지회로는 수치제어장치(CNC)와 서보드라이브(SD) 및 서보모터(M)로 구성되는 구동회로에 설치운용되는데 이 서보모터 구동방지회로는 제2도의 예시와 같이 수치제어장치(CNC)에 연결되는 비상정지용 릴레이모듈(ERM)과, 상기 서보드라이브(SD)의 입력단에 설치되는 서보드라이브 스위치 연동접점(S2)과 상기 서보드라이브(SD)의 출력단에 설치되는 모터스위치 연동접점(S3)으로 구성하고 수치제어장치의 전원을 개폐차단하기 위한 연동접점(S1)을 구성한다.The servomotor driving prevention circuit of the present invention is installed and operated in a driving circuit composed of a numerical control device (CNC), a servo drive (SD), and a servomotor (M). The servomotor driving preventing circuit has a numerical value as shown in the example of FIG. Emergency stop relay module (ERM) connected to the control device (CNC), the servo drive switch interlocking contact (S2) provided at the input terminal of the servo drive (SD) and the motor switch is installed in the output terminal of the servo drive (SD) It consists of the interlocking contact (S3) and constitutes the interlocking contact (S1) for opening and closing the power supply of the numerical control device.

상기 비상정지용 릴레이모듈(ERM)은 제3도의 예시와 같이 비상정지스위치(PB2)의 누름동작으로 '오프'되는 비사정지릴레이(R1)와, 동 비상정지릴레이(R1)의 A접점(R1-a)에 병렬연결되는 서보드라이브 스위치(MS2)와 모터스위치(MS2)로 구성되며, 상기 서보드라이브 스위치(MS2)의 동작으로 그의 연동접점(S2)이 동작하여 서보드라이브(SD)로 흐르는 전원을 공급 또는 차단시키게 되고, 상기 모터스위치(MS2)의 동작으로 그의 연동접점(S3)이 동작하여 서보모터(M)로 흐르는 전원을 공급 또는 차단시키게 되는 것이다.The emergency stop relay module (ERM) is the pressing operation to the "off" secret history shutdown relay (R1) is of the emergency stop switch (PB2), as in the example third degree, copper contact A (R 1 of the emergency stop relay (R1) -a ) consists of a servo drive switch (MS2) and a motor switch (MS2) connected in parallel, the power of the drive flows to the servo drive (SD) by operating the interlocking contact (S2) by the operation of the servo drive switch (MS2). It is to supply or cut off, the interlocking contact (S3) is operated by the operation of the motor switch (MS2) is to supply or cut off the power flowing to the servo motor (M).

이와같은 구성을 갖는 본 고안의 작용효과를 설명하면, 기계를 움직이기 위하여 전원을 공급하는 기동스위치(PB1)를 누르면 전원이 비상정지릴레이(R1)를 구동시키게 되고, 이어서 비상정지릴레이(R1)의 A접점(R1-a)이 '온'이 되어 이 a접점(R1-a)과 병렬연결된 서보드라이브 스위치(MS2) 및 모터스위치(MS3)를 구동시키게 되므로 서보드라이브(SD)의 입출력단에 각각 설치된 그들의 연동접점(S1)(S2)(S3)이 동시에 온동작하게 되므로 수치제어장치(CNC)의 제어동작에 의한 서보모터(M)의 구동이 이루어지게 되는 것이다.Referring to the operation and effect of the present invention having such a configuration, when the start switch (PB1) for supplying power to move the machine, the power to drive the emergency stop relay (R1), and then emergency stop relay (R1) Contact's A contact (R 1-a ) is turned 'on' to drive servo drive switch (MS2) and motor switch (MS3) connected in parallel with contact a (R 1-a ). Since the interlocking contacts S1, S2, and S3 respectively provided at the stages are turned on at the same time, the servomotor M is driven by the control operation of the numerical control device CNC.

기계의 동작중 작업자가 기계를 비상정지시키기 위하여 비상정지스위치(PB3)를 누르거나 기타 외부비상사태가 발생될 경우, 비상정지릴레이(R1)가 바로 '오프'되면서 서보드라이브 스위치(MS2) 및 모터스위치(MS3)가 동시에 '오프'되어 그의 접점(S1)(S2)(S3)들이 동시에 오프동작하여 전원이 차단하게 되므로 서보드라이브(SD)를 통해 공급되는 서보모터(M)는 전원차단으로 서보드라이브(SD)를 통해 흐를수 있는 잔류전압이나 외부요인에 의한 전원 및 고장전류등의 불요전원을 원천차단할 수 있어 기계의 이상 사태 발발시 기계의 손상이나 안전사고를 미연에 방지할 수 있게 되는 것이다.If the operator presses the emergency stop switch (PB3) or other external emergency in order to emergency stop the machine, the emergency stop relay (R1) is immediately 'off' and the servo drive switch (MS2) and motors Since the position MS3 is 'off' at the same time and its contact points S1, S2, and S3 are simultaneously turned off to cut off the power, the servo motor M supplied through the servo drive SD is powered off. Unnecessary power sources such as residual voltage that can flow through the drive (SD), external power, and fault current can be blocked at the source, preventing damage to the machine or safety accidents in the event of an accident. .

Claims (1)

수치제어장치(CNC)와 서보드라이브(SB)의 출력단에 연결되어 동작하는 서보모터를 갖는 회로에 있어서, 전원을 공급하는 기동스위치(PB1)의 출력단에 연결된 비상정지스위치(PB2)의 입력으로 오프되고, 상기 기동스위치(PB1)에 병렬로 연결된 a접점(R1-a)가 오프되면서 비상정지용릴레이(R1)와 서보드라이브스위치(MS2)를 병렬로 연결하고 상기 서보드라이브스위치(MS2)와 모터스위치(MS3)를 병렬로 연결한 릴레이모듈(ERM)가 동시에 오프되고, 상기 릴레이모듈(ERM)의 출력단에 연결된 각 연동지접점(S1)(S2)(S3)이 오프되어 서보드라이브(SD)의 출력단의 서보모터(M)에 공급되는 잔류전원을 차단할 수 이어지도록 연결함을 특징으로 하는 잔류전압에 의한 서보모터구동 방지회로.In a circuit having a servo motor connected to the output terminal of the numerical control device (CNC) and the servo drive (SB), it is turned off by the input of the emergency stop switch (PB2) connected to the output terminal of the start switch (PB1) for supplying power. The contact a (R 1-a ) connected in parallel to the start switch (PB1) is turned off while connecting the emergency stop relay (R1) and servo drive switch (MS2) in parallel and the servo drive switch (MS2) and the motors The relay module ERM connected in parallel with the position MS3 is turned off at the same time, and the respective interlocking contact points S1, S2, and S3 connected to the output terminal of the relay module ERM are turned off, and the servo drive SD is turned off. Servo motor drive prevention circuit according to the residual voltage, characterized in that connected so as to connect the residual power supplied to the servo motor (M) of the output terminal of the connection.
KR2019940019637U 1994-08-02 1994-08-02 Servo motor protecting circuit for remaining voltage KR0124684Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019940019637U KR0124684Y1 (en) 1994-08-02 1994-08-02 Servo motor protecting circuit for remaining voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019940019637U KR0124684Y1 (en) 1994-08-02 1994-08-02 Servo motor protecting circuit for remaining voltage

Publications (2)

Publication Number Publication Date
KR960009358U KR960009358U (en) 1996-03-16
KR0124684Y1 true KR0124684Y1 (en) 1998-12-15

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