KR100356100B1 - Shut-down delay relay - Google Patents

Shut-down delay relay Download PDF

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Publication number
KR100356100B1
KR100356100B1 KR1019940038685A KR19940038685A KR100356100B1 KR 100356100 B1 KR100356100 B1 KR 100356100B1 KR 1019940038685 A KR1019940038685 A KR 1019940038685A KR 19940038685 A KR19940038685 A KR 19940038685A KR 100356100 B1 KR100356100 B1 KR 100356100B1
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South Korea
Prior art keywords
relay
circuit
latch circuit
output
resistor
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KR1019940038685A
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Korean (ko)
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KR960025897A (en
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김인석
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삼화이오씨알 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Abstract

PURPOSE: A shut-down delay relay is provided to improve a characteristic of the shut-down delay relay by forming a delay time setup circuit, a latch circuit, and an LED display circuit. CONSTITUTION: An output terminal of a time constant circuit including a diode(D6), a fixing resistor(R6), a variable resistor(VR), and a condenser is connected to input terminals of inverts(Q2,Q3) of a latch circuit. An output terminal of the latch circuit is connected to a gate of a field effect transistor(FET) through an inverter(Q6) and a fixing resistor(R3). A drain of the field effect transistor(FET) is connected to a ground portion. A source of the field effect transistor(FET) is connected to a coil of a relay(RL). A collector of a transistor(Q1) is connected to the latch circuit. An emitter of the transistor(Q1) is connected to the ground portion. A base of the transistor(Q1) is connected to an output contact point of a relay(RL) through a resistor(R8). The output contact point of the relay(RL) is connected to an input portion of the latch circuit through a photo coupler(P.T). An output portion of the latch circuit is connected to a static voltage circuit through an inverter(Q7) and a light emitting diode(LED).

Description

지연 석방 릴레이Delay release relay

본 고안은 지연 석방 릴레이(Shut down deray Relay 이하 SDDR라한다)에 관한것으로 특히 선출원 특허 제94-27716호의 개량 고안에 관한것이다.The present invention relates to a delay release relay (hereinafter referred to as SDDR), and more particularly, to an improved design of Patent Application No. 94-27716.

이미 선출된 특허에서 밝힌바와 같이 종래는 모우터 제어용 배전반에서 전동기가 운전 도중 순간 정전이 발생하는 경우 전자접촉기가 소자되는것이므로 운전공이 반듯이 ON보턴을 다시 눌러 주어야 재기동 하도록되는 거이므로 방직 공장이나 섬유공장 등에서는 수 천대의 모우터를 즉시 시동시킨다는것은 거의 불가능한것이므로 이를 해결하기 위하여 지연 릴레이를 이용하여 볼륨으로 설정된 지연시간 안에 순간 정전이 발생하는 경우 재 기동할 수 있도록 하기 위하여 저항과 다이오드 및 제너다이오드와 콘덴서로 음전위 유지회로가 구성되고 저항과 가변저항으로 지연시간 설정회로가 구성되고 저항과 포토 커플러 및 싸이리스터로 급방전회로를 구성시켜서 되는것이다.As stated in the patent already selected, conventionally, the motor contactor is a magnetic contactor when the momentary power failure occurs during operation of the motor control switchboard. It is almost impossible to immediately start thousands of motors in the lamp, so to solve this problem, a resistor, a diode, and a zener diode can be restarted in case of instantaneous power failure within the volume set delay time using a delay relay. The negative potential holding circuit is composed of the capacitor, the delay time setting circuit is composed of the resistor and the variable resistor, and the rapid discharge circuit is composed of the resistor, the photo coupler and the thyristor.

본 발명은 고정 저항과 가변저항 및 콘덴서와 인버터로 지연시간 설정회로가 구성되고, 랫지회로와 인버터로 전계효과 트랜지스터로 릴레이 및 LED표시회로를 구성함으로서 개선한것이다.The present invention is improved by configuring a delay time setting circuit with a fixed resistor, a variable resistor, a capacitor, and an inverter, and configuring a relay and an LED display circuit with a field effect transistor with a latch circuit and an inverter.

이하 본 발명을 첨부된 실시예의 전기적 회로도에 따라 상술한다.Hereinafter, the present invention will be described in detail with reference to the electrical circuit diagram of the attached embodiment.

도면에서 L1,L2는 AC전원입력단자를 의미하며, 양 단자(L1,L2)사이에는 ON스위치 즉 푸쉬보턴 스위치(S1)와 OFF스위치인 푸쉬보턴스위치(S2)및 전자접촉기 코일(MC) 그리고 과전류릴레이(DCR)가 직열로 연결되고 푸쉬보턴 스위치(S1)과 병열로 전자접촉기(MC')가 연결되어 도시하지 않은 모우터 콘트롤회로를 구성함은 공지의 것이므로 이에 대한 설명은 명세서의 간략화를 위해 생략한다.In the drawing, L1 and L2 mean AC power input terminals, and between both terminals L1 and L2, the ON switch, that is, the push button switch S1 and the OFF switch push button switch S2 and the magnetic contactor coil MC and Since the overcurrent relay (DCR) is connected in series and the pushbutton switch (S1) is connected in parallel with the magnetic contactor (MC ') to form a motor control circuit (not shown), the description thereof will be simplified. Omitted.

본 발명 SDDR에 있어서, 전원 입력단자(L2)는 AC콘덴서(C1)과 공심 리액터(L1)및 다이오드(D1,D2)로 배전압으로 정류하여 릴레이(RL)의 구동전원과 지연시간 설정회로의 전원으로 공급토록되고 또 이와 같은 정류된 직류전원의 일부는 콘덴서(C2)(C3)및 다이오드(D3)와 리액터(L2)및 제너다이오드(ZD로되는 정전압 회로가 구성되고 다이오드(D6)와 저항(R6)및 가변저항(VR)과 콘덴서(C4)에 의한 시정수로 지연시간을 결정토록되고, 인버터(Q2,Q3)및 다이오드(D7)의 출력이콘덴서(C5)와 저항(R7)및 인버터(Q4,Q5)로 랫지회로가 구성되어 있으며, 인버터(Q6)의 출력중 일부는 드레인이 접지되고 소오스가 릴레이(RL)의 코일에 연결된 전계효과 트랜지스터(FET)의 게이트에 연결되고, 일부는 인버터(Q7)를 통해 발광다이오드(LED)에 연결되어 있다.In the SDDR of the present invention, the power supply input terminal L2 is rectified by the double voltage to the AC capacitor C1, the co-core reactor L1, and the diodes D1 and D2, so that the driving power and the delay time setting circuit of the relay RL Some of the rectified DC power supplies to the power supply are composed of a capacitor (C2) (C3) and a diode (D3), a reactor (L2) and a zener diode (ZD) and a diode (D6) and a resistor. The delay time is determined by the constant R6 and the time constant by the variable resistor VR and the capacitor C4, and the outputs of the inverters Q2, Q3 and the diode D7 are the capacitor C5, the resistor R7 and A latch circuit is composed of inverters Q4 and Q5, and a part of the output of the inverter Q6 is connected to the gate of the field effect transistor FET whose drain is grounded and the source is connected to the coil of the relay RL. Some are connected to the light emitting diodes (LEDs) via inverter Q7.

한편, ON단자는 릴레이(RL)의 출력접점에 연결됨과 동시에 저항(R8)으로 에미터 접지된 NPN형 트랜지스터(Q1)의 베이스에 연결되고 코렉터는 상기한 랫지회로에 연결되어 있다. 그리고 상기한 ON단자와 OFF단자 사이에는 저항(R5)을 통해 포토커플러(T.T)의 발광다이오드에 연결되고 포토 커플러(P.T)의 포토트랜지스터는 에미터가 접지되고 콜렉터는 상기한 랫지회로에 연결하여서된것이다.On the other hand, the ON terminal is connected to the output contact of the relay (RL) and at the same time is connected to the base of the NPN transistor Q1 that is emitter grounded with a resistor (R8) and the corrector is connected to the above-mentioned latch circuit. The ON terminal and the OFF terminal are connected to the light emitting diode of the photo coupler TT through a resistor R5, the phototransistor of the photo coupler PT is connected to the emitter, and the collector is connected to the above-mentioned latch circuit. It is done.

도면중 미설명부호 D4,D5,D9는 다이오드, R2,R3,R4,R9,R10은 고정저항, C6은 콘덴서, SW는 테스트 스위치를 의미한다.In the drawings, reference numerals D4, D5, and D9 denote diodes, R2, R3, R4, R9 and R10 denote fixed resistors, C6 denotes a capacitor, and SW denote a test switch.

상기와 같은 구성으로 되는것이므로 통상시는 AC콘덴서(C1)와 리액터(L1)로 써지전류를 방지하게되면서 다이오드(D1,D2)에 의해 배전압정류된 전원은 다이오드(D6)를 통해 콘덴서(C4)를 충전하게되고, 콘덴서(C2)와 다이오드(D3)및 리액터(L2)와 제너다이오드(ZD)및 콘덴서(C3)로 구성되는 정전압회로에 의해 정전압을 공급하게된다.Since it is configured as described above, the power supply rectified by the diodes D1 and D2 while the surge current is prevented by the AC capacitor C1 and the reactor L1 is normally connected to the capacitor C4 through the diode D6. ) Is supplied, and the constant voltage is supplied by the constant voltage circuit composed of the capacitor C2, the diode D3, the reactor L2, the zener diode ZD, and the capacitor C3.

상기와 같은 상태에서 푸쉬보턴 ON 스위치(S1)를 눌러 예를 들어 도시하지 않은 모우터를 시동시키게되는경우 접촉기코일(MC)이 여자됨으로 전자접촉기(MC')도 여자되어 전원(L2)는 저항(R8)을 통해 에미터 접지된 트랜지스터(Q1)를 턴온시키므로 저항(R10)을 통해 인버터(Q6)의 출력을 "L"로 반전시켜 드레인이 접지된 전계효과 트랜지스터(FET)를 도통시켜 릴레이(RL)가 여자되며, 이와 같은 릴레이 접점에의해 포토커플러(P.T)의 출력측이 접지와 도통됨으로 이번에는 인버터(Q4)의 출력이 "H"가되고, 인버터(Q5)에의한 랫지회로를 통해 인버터(Q6)의 출력이 "L"가되어 상기와 같이 전계효과 트랜지스터(FET)를 도통시켜 릴레이(RY)의 여자가 계속되면서 발광다이오드(LED)가 점등되어 표시된다.In the above state, when the pushbutton ON switch S1 is pressed to start a motor (not shown), for example, the contactor coil MC is excited, so that the magnetic contactor MC 'is also excited and the power supply L2 is resisted. Since the emitter grounded transistor Q1 is turned on via R8, the output of inverter Q6 is inverted to " L " via resistor R10 to conduct a field effect transistor FET having a drained ground to conduct a relay ( RL) is excited and the output side of the photocoupler PT is connected to the ground by the relay contact, and this time, the output of the inverter Q4 becomes "H", and through the latch circuit by the inverter Q5. The output of the inverter Q6 becomes " L " and conducts the field effect transistor FET as described above so that the excitation of the relay RY continues and the light emitting diode LED is lit and displayed.

이와 같은 ON상태에서 OFF스위치(S2)를 누르는경우 접촉기코일(MC)가 소자되고 자접촉기(MC')도 소자되며, 포토커플러(P.T)의 출력도 OFF되나 고정 저항(R6)과 가변저항(VR)애 의해 콘덴서(C4)에 충전되어 있는 전하를 방전시키는 동안 즉 가변저항(VR)과 콘덴서(C4)의 시정수동안 인버터(Q2)의 출력이 "H "가되고 인버터(Q3)의 출력이 "L"로 유지하여 다이오드(D7)로 인버터(Q4)의 입력을 "L"로 유지시켜 주게된다.When the OFF switch S2 is pressed in such an ON state, the contactor coil MC is demagnetized and the magnetic contactor MC 'is deactivated, and the output of the photocoupler PT is turned off, but the fixed resistor R6 and the variable resistor ( The output of inverter Q2 becomes " H " and the output of inverter Q3 while discharging the electric charge charged in capacitor C4 by VR, i.e., during the time constants of variable resistor VR and capacitor C4. By keeping this "L", the diode D7 keeps the input of the inverter Q4 at "L".

상기와 같이 콘덴서(C4)의 충전전하가 가변저항(VR)에의해 서서히 방전되는 지연시간만큼 다이오드(D6)에의해 인버터(Q2)의 입력이 "H"로되고 인버터(Q3)에의해 출력이 "H"로반전됨으로서 이번에는 랫지회로의 인버터(Q4)의 출력이 "L"로반전됨으로 인버터(Q6)의 출력측이 "H"로 반전되어 전계효과 트랜지스터(FET)가 OFF되어 릴레이(RY)도 소자되어 릴레이 접점도 OHH되며, 또 인버터(S&)의 출력이 "H"가되어 발광다이오드(LED)도 소등되는것이다.As described above, the input of the inverter Q2 becomes "H" by the diode D6 for a delay time during which the charge charge of the capacitor C4 is gradually discharged by the variable resistor VR, and the output is output by the inverter Q3. Inverting to "H", this time, the output of inverter Q4 of the latch circuit is reversed to "L", so that the output side of inverter Q6 is inverted to "H", the field effect transistor FET is turned off, and the relay RY ), The relay contacts are also OHH, and the output of the inverter S < " becomes " H ", so that the LED is also turned off.

상기와 같이 본 발명에 의하면, 포토커플러(P.T)에의한 리세트회로와 AC콘덴서와 리액터에의한 콘덴서 드롭방식으로되며, 릴레이(RY)의 구동을 발광다이오드(LED)로 표시되고 콘덴서(C4)와 가변저항(VR)에의한 시정시간 만큼OFF시간을 갖도록되는 되는것이므로 가변저항으로 설정된 지연시간 안에 순간 정전이 발생되는 경우 재기동되어 모우터의 정지를 막아줄 수 있는 산업적으로 유용한 발명인것이다.According to the present invention as described above, there is a reset circuit by the photocoupler (PT) and the capacitor drop method by the AC capacitor and the reactor, and the driving of the relay (RY) is indicated by the light emitting diode (LED) and the capacitor (C4). It is to have the OFF time by the time set by the variable resistor (VR) and the variable resistor (VR) is an industrially useful invention that can be restarted when the momentary power failure occurs within the delay time set by the variable resistor to prevent the stop of the motor.

첨부 도면은 본 발명을 설명키 위한 실시예의 전기적 회로도이다.The accompanying drawings are electrical circuit diagrams of embodiments for explaining the present invention.

---- 도면중 부호의 설명 -------- Explanation of codes in drawing ----

L1,L2는 전원입력 단자, S1은 ON스위치, S2는 OFF스위치, R1는 릴레이. FET는 전계효과 트랜지스터, Q1은 NPN형 트랜지스터, P.T는 포토커플러. OCR는 과전류릴레이, MC는 전자접촉기코일. Q2~Q7은 인버터, LED는 발광 다이오드. VR는 가변저항. C1은 교류콘덴서. L1~L2는 공심 리액터, D1~D9는 다이오드. Sw는 테스트 스위치. C2~C6는 콘덴서. ZD는 제너다이오드. R1~R10은 고정저항을 의미한다.L1 and L2 are power input terminals, S1 is ON switch, S2 is OFF switch, and R1 is relay. FET is a field effect transistor, Q1 is an NPN transistor, and P.T is a photocoupler. OCR is overcurrent relay, MC is magnetic contactor coil. Q2 ~ Q7 are inverters and LEDs are light emitting diodes. VR is a variable resistor. C1 is AC capacitor. L1-L2 are co-reactor, D1-D9 are diodes. Sw test switch. C2 ~ C6 are capacitors. ZD is a zener diode. R1 ~ R10 means fixed resistance.

Claims (3)

다이오드(D6)와 고정저항(R6) 및 가변저항(VR)과 콘덴서(C4)로 구성된 시정수 회로의 출력이 랫지회로를 구성하는 인버터(Q2,Q3)의 입력측에 연결되고, 상기한 랫지회로의 출력이 인버터(Q6)와 고정저항(R3)을 통해 드레인이 접지되고 소오스가 릴레이(RY)의 코일에 연결된 전계효과 트랜지스터(FET)의 게이트에 연결하여 상기 릴레이를 구동토록되는 것을 특징으로하는 지연 석방 릴레이.The output of the time constant circuit composed of the diode D6, the fixed resistor R6, the variable resistor VR and the capacitor C4 is connected to the input side of the inverters Q2 and Q3 constituting the latch circuit. The output of the ground circuit is grounded through the inverter Q6 and the fixed resistor R3, and the source is connected to the gate of the field effect transistor FET connected to the coil of the relay RY to drive the relay. Delay release relay. 청구범위 1항에 있어서, 랫지회로에는 에미터 접지된 트랜지스터(Q1)의 콜렉터가 연결되고 상기한 트랜지스터(Q1)의 베이스에는 저항(R8)을 통해 릴레이(RY)의 출력접점에 연결되는 것을 특징으로하는 지연 석방 릴레이.The method of claim 1, wherein the latch circuit is connected to the collector of the transistor Q1 of the emitter grounded and the base of the transistor Q1 is connected to the output contact of the relay (RY) through the resistor (R8) Featuring a delayed release relay. 청구의 범위 1항에 있어서, 릴레이(RY)의 출력접점이 포토커플러(P.T)를 통해 상기한 랫지회로의 입력측에 연결되고, 상기 랫지회로의 출력이 인버터(Q7)와 발광다이오드(LED)를 통해 정전압회로에 연결되어 릴레이의 구동을 표시토록 하여서되는 지연 석방 릴레이.The output contact of the relay circuit according to claim 1, wherein the output contact of the relay RY is connected to the input side of the latch circuit through the photocoupler PT, and the output of the latch circuit is connected to the inverter Q7 and the light emitting diode LED. Delayed release relay connected to the constant voltage circuit to display the operation of the relay.
KR1019940038685A 1994-12-29 1994-12-29 Shut-down delay relay KR100356100B1 (en)

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KR100356100B1 true KR100356100B1 (en) 2002-12-11

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KR100436511B1 (en) * 1997-12-23 2004-08-25 주식회사 포스코 Instantaneous low voltage trip delay circuit including full wave rectifier circuit unit, processing unit, and output unit

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