EP0235050A1 - Steuerungsvorrichtung für elektrische Geräte - Google Patents

Steuerungsvorrichtung für elektrische Geräte Download PDF

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Publication number
EP0235050A1
EP0235050A1 EP87420012A EP87420012A EP0235050A1 EP 0235050 A1 EP0235050 A1 EP 0235050A1 EP 87420012 A EP87420012 A EP 87420012A EP 87420012 A EP87420012 A EP 87420012A EP 0235050 A1 EP0235050 A1 EP 0235050A1
Authority
EP
European Patent Office
Prior art keywords
terminal
relay
switch
terminals
coil
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP87420012A
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English (en)
French (fr)
Inventor
Jean-Luc Vial
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Areel Agence De Realisation Et D'etudes Electroniques Scop Sarl
Original Assignee
Areel Agence De Realisation Et D'etudes Electroniques Scop Sarl
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Filing date
Publication date
Application filed by Areel Agence De Realisation Et D'etudes Electroniques Scop Sarl filed Critical Areel Agence De Realisation Et D'etudes Electroniques Scop Sarl
Publication of EP0235050A1 publication Critical patent/EP0235050A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current

Definitions

  • the present invention relates to devices for controlling electrical devices supplied with alternating current, in particular single-phase capacitor motors.
  • the object of the present invention is to obtain an economic control device composed in large part of standard elements, which makes it possible to obtain several functions by manual action on one or more push button type controls.
  • Certain functions can be applied to any electrical device supplied with alternating current; constant power on, intermittent power on, power off the device.
  • Another object of the present invention is to be able to connect to said control device for any electrical appliance, safety devices of the electrical contact type causing the switching off of said appliance in order to protect said appliance, for example against excessive heating, or to protect the operator when using said device.
  • the status of the safety devices authorizing or prohibiting the operation of said device can be viewed on one or two indicator lights, for example, red light indicating the prohibition of operation, green light authorizing operation.
  • control device comprises a main part called a switch, and a part called a current detector which can be added to form a complete control of a single-phase capacitor motor.
  • the part called switch is made up of a relay provided with a working contact which makes it possible to switch the AC voltage on the device.
  • the coil of the relay is supplied from the same alternating voltage by placing in series with the coil of said relay a resistor, a closing push-button for starting, and a voltage rectifying diode.
  • a capacitor placed in parallel with the coil of said relay stabilizes the rectified current.
  • the self-supply of said relsi.s is carried out by a circuit composed of an opening push button used for switching off and a diode in series, the assembly connected to the common point of the closing push button and of the coil of said relay, and on the switched terminal of the contact of said relay.
  • the constant running function is obtained, the power off and the intermittent running of said device. Intermittent operation is obtained by pressing the closing push button while holding down the opening push button. If the latter function is not desired, it can be deleted by changing the connection of the two pushbuttons.
  • the three functions mentioned above can be performed by three push buttons, each having a function.
  • a third push button provided with a working contact and a rest contact as well as a diode mounted in reverse of the two preceding diodes. Intermittent operation is done by action on this push button, causing a current flow in the opposite direction in the coil of said relay, which has the advantage of eliminating a hazard that can occur in other devices with two push buttons and concerning the maintenance of the named switch in constant operation after an operation in intermittent operation.
  • safety members of the electrical contact type the opening of which causes the device to be switched off.
  • the status of these safety devices can be viewed by means of one or two indicator lights.
  • the said safety contacts When the said safety contacts are closed, they supply the control circuit of said relay as well as an indicator light, when at least one of said safety contacts is open, the control circuit is no longer supplied and the other indicator light is enlightened. The operator is thus informed of the state of said safety devices and, consequently, of the possibility or not possibility of switching on said device.
  • the part called current detector mainly applies to the control of a single-phase capacitor motor in addition to the part called switch.
  • the switching of said starting capacitor is done by means of a relay provided with a work contact and a rest contact.
  • a resistance of low value placed in series with the main circuit of said single-phase motor causes a voltage at its terminals which generates the conduction of a transistor from its emitter base junction when said voltage reaches a certain threshold.
  • a resistance is added in series on the base of said transistor.
  • the conduction of said transistor produces the passage of a current rectified by a diode in the coil of said relay which causes the closing of the working contact and the switching of the starting capacitor.
  • a resistance network, zener diode, capacitor placed in parallel on the power supply makes it possible to limit the collector-emitter voltage of the transistor.
  • a capacitor placed in parallel on the relay coil stabilizes the rectified current.
  • the device called current detector therefore makes it possible, when the single-phase capacitor motor is energized, to switch the capacitor in series on the starting winding of said single-phase motor, following a high current flowing in the main winding of said motor. single phase.
  • the intensity increases; the current detector relay is then activated in the same way as for start-up but permanently.
  • An indicator light placed in parallel on the coil of said relay allows the operator to signal this excess intensity, which can avoid deteriorating said single-phase motor.
  • a control device in the embodiment shown in fig. 1, described below a control device according to the invention, called a switch, is connected to a single-phase motor 1 having a main winding connected between the terminals B3 and B5 and a starting winding connected between the terminals B3 and B4.
  • a starting capacitor 51 is connected between terminals B4 and B7, said capacitor is switched during startup by the current type current intensity relay RI with its coil connected between terminals B6 and B5, and its switching contact of the connected relay between terminals B5 and B7.
  • Said switch with four terminals B1, B2, B6, and B7, connected to the alternating voltage source S by the terminals B1 and B2, connected to the main circuit of the motor by the terminal B6 and by the common terminal B1 with the terminal B3, said switch connected by terminal B7 to capacitor 51 for braking.
  • the switch in fig. 1 is in the stop position.
  • the safety contact 31 represents the thermal safety of the motor, closed if the motor does not exceed a limit operating temperature, open otherwise.
  • Safety contact 32 represents a limit switch actuated by the protection screen of the machine driven by said single-phase motor 1 for operator safety. If contacts 31 and 32 are closed, terminal 21 and terminal B1 are at the same electrical potential, the green light 34 is then lit by a current passing through the diode 29, the red light 33 is off, said switch has the possibility of operating. If at least one of the two contacts 31, 32 is open following the absence of the protective screen or an excessive temperature of the motor, the electric current coming from the source S passes through the red indicator 33, the resistor 35 and the diode 29.
  • the resistor 35 is chosen so as to have a low voltage at its terminals which causes the green light 34 to go out, the red light 33 to light up, the switch to be prevented from operating.
  • the relay When the operator releases the push button Pl, the relay is held by the current from the source S passing through the contacts 31, 32, the resistor 22, the coil R1 of the relay, the button with opening P2, the diode 27 , and the working contact closed TR1
  • the motor is under constant voltage.
  • the switch for any type of electrical appliance supplied with alternating current, allowing constant powering up, switching off of said electrical appliance by action on two push buttons has the two terminals 21, B1 and B2 connected on the terminals of the source of alternating current S, said electrical appliance with a terminal B3 connected to terminal B1 and a terminal B5 connected to the third terminal B6 of said switch.
  • Said switch comprises a resistor 22 connected to terminal 21, B1 and connected in series with the coil R1 of the relay, an opening push button P2, a closing push button P1 and a diode 29 the cathode of which is connected to terminal B2 .
  • Said switch further comprises a capacitor 23 placed in parallel on the coil R1 of the relay, a diode 27 the anode of which is connected to the common point of the push buttons P1 and P2 and the cathode on the terminal B6, said switch finally comprises the work contact TR1 of said relay connected between terminals B6 and B2.
  • the switch for any type of electrical device supplied with alternating current, allowing constant powering, intermittent powering up, switching off of said electrical device by action on two push buttons, with two terminals 21, B1 and B2 connected on the terminals of the alternating current source S, said electrical appliance with a terminal B3 connected to the terminal B1 and a terminal B5 connected to the third terminal B6 of said switch.
  • Said switch comprises a resistor 22 connected to terminal 21, B1 and placed in series with the coil R1 of the relay, a push button with closing P1, a diode 29 whose cathode is connected to terminal B2.
  • Said switch further comprises a capacitor 23 placed in parallel on the coil R1 of said relay, an opening push button P2 connected to the common point of the push button P1 and of the coil R1 of said relay, which push button P2 is put in series with a diode 27 whose cathode is connected to terminal B6, said switch finally comprises the working contact TR1 of said relay connected between terminals B6 and B2.
  • An operational hazard can occur in the assembly described above, when the operator releases the push button P2 before or shortly after the push button Pl, the relay remains triggered by the passage of current in the relay coil by the push button P2 and diode 27.
  • the switch for any type of electrical appliance supplied with alternating current, making it possible to carry out constant power-up, intermittent power-up, power-off of said electrical device, by action on three push-buttons with two terminals 21, B1 and B2 connected to the terminals of the alternating current source S, said electrical appliance with a terminal B3 connected to terminal B1 and a terminal B5 connected to the third terminal B6 of said switch.
  • Said switch comprises a resistor 22 connected to terminal 21, Bl and placed in series with the coil R1 iu relay, the rest contact of the push button P3, a push button with opening P2, a push button with closing Pl, and a diode 29 whose cathode leads to terminal B2.
  • Said switch further comprises a diode 36 with anode connected to the terminal B2 and cathode connected to the working contact of the push button P3.
  • Said switch finally comprises a diode 27 with cathode connected to the terminal B6 and and anode on the common point of the two push buttons Pl and P2, a capacitor 23 is placed in parallel on the coil R1 of the relay, the working contact TR1 of said relay is connected between the terminals B6 and B2.
  • Another characteristic of said switch is to be able to economically produce the three push buttons Pl, P2, P3 of FIG. 2 by an assembly soldered on a printed circuit shown in fig. 3 and 4, composed of one or two elastic conductive strips L1 and L2, and three pads P1, P2, P3 conductors.
  • An insulating part P called a controller controls the three functions.
  • the connection of these assemblies shown in fig. 3 and 4 is done in place of the three push buttons P1, P2, P3 in fig. 2, by connecting the blade (s) Ll and L2 to terminal 24, the pad P1 on the terminal 26, the pad P2 on the terminal 25, the pad P3 on the terminal 28.
  • the movement of the lever P in the direction Sl produces constant power-up, in direction S2 first power-off, then more intermittently shifted.
  • the elastic blade L1 brings the part P back to the rest position after each operation.
  • safety means for switching off the device comprising at least one safety contact S1 and S2 placed in series between terminal B1 and terminal 21.
  • the means for viewing the state of the safety contacts include an indicator light placed between terminal B1 and terminal 21 and, or, another indicator light 34 placed between terminal 21 and the anode of diode 29, with a resistor 35 placed in parallel with the indicator light 34.
  • the part called current detector, according to the present invention is shown in fig. 5 with the device named switch. Said current detector is used on the one hand to switch the starting capacity 51 of the single-phase motor 1, and on the other hand to signal using the indicator light 5 * 7 an excess of intensity in the single-phase motor 1.
  • the intensity of the current flowing in the motor 1 between the terminals B3 and B5 is high.
  • This intensity causes an alternating voltage at the terminals B10 and B8 of the resistor RS causing the conduction on an alternation of the transistor 49 following the current coming from the terminal B8, crossing the resistor 46, the emitter base junction of the transistor 49, the resistor 45 and ending at terminal B10.
  • Due to the conduction of the transistor 49 a current is generated, rectified by the diode 41, passing through the resistor 42, in the coil R2 of the relay, in the emitter-collector junction of the transistor 49 and in the resistor 45.
  • a zener diode is added between the terminal B11 and B10.
  • a capacitor 47 is added between the terminal B11 and B10. Said current flowing in the coil R2 of the relay, stabilized by the capacitor 43 in parallel on said coil, causes the closing of the working contact TR2 of the relay switching the starting capacity 51 and the starting coil of the motor 1. This switching causes the starting motor 1.
  • the transistor 49 becomes conductive and the coil R2 of the relay is energized, the relay contact TR2 closes in the same way as for starting.
  • a warning light 57 is added in parallel with the coil R2 of the relay.
  • a resistance with a negative temperature coefficient 48 is added between the base of the transistor and the terminal B10, B2.
  • the switch is characterized in that it is associated with the so-called current detector as shown in fig. 5, for switching the starting capacitor 51 of the single-phase motor.
  • Said current detector comprises a diode 41 whose anode is connected to terminal 21 and connected in series with the resistor 42, the coil R2 of the relay of the current detector, the collector-emitter junction of the transistor 49, a resistor 45 terminating at terminal B2.
  • a capacitor 43 is placed in parallel with the coil R2 of the relay, between the common point of the coil R2 of the relay and the resistor 42, and the terminal B2 is placed in parallel a capacitor 47 and a zener diode 44 with anode on B2.
  • Said ' -detector further comprises a series resistor RS placed between the terminal B2 and the working contact TR1 of the switch relay, a resistor 46 is connected between the base of the transistor 49 and the common point of the resistance RS and the working contact TR1 .
  • Said detector finally comprises the working contact TR2 of the relay connected between the terminals B6 and B9, the starting capacitor 51 connected between the terminals B9 and B4, the rest contact RR2 of said relay connected in series with the rest contact RR1 forming the braking circuit and ending at terminal B9.
  • the low value RS resistance can be achieved by means of a resistant wire or a printed circuit track.
  • all the elements of the so-called switch and of the so-called current detector can be soldered on a printed circuit, reducing the wiring to a minimum and thus forming a complete and economical capacitor motor control device. .

Landscapes

  • Stopping Of Electric Motors (AREA)
  • Motor And Converter Starters (AREA)
EP87420012A 1986-01-17 1987-01-13 Steuerungsvorrichtung für elektrische Geräte Withdrawn EP0235050A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8600818A FR2593336B1 (fr) 1986-01-17 1986-01-17 Dispositif de commande des appareils electriques
FR8600818 1986-01-17

Publications (1)

Publication Number Publication Date
EP0235050A1 true EP0235050A1 (de) 1987-09-02

Family

ID=9331339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420012A Withdrawn EP0235050A1 (de) 1986-01-17 1987-01-13 Steuerungsvorrichtung für elektrische Geräte

Country Status (3)

Country Link
US (1) US4772808A (de)
EP (1) EP0235050A1 (de)
FR (1) FR2593336B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336973A1 (de) * 1987-10-07 1989-10-18 Fanuc Ltd. Notstop-regelschaltung
CN109269758A (zh) * 2018-10-30 2019-01-25 北京航天益森风洞工程技术有限公司 一种风洞三自由度模型***机构控制***及方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5528120A (en) * 1994-09-09 1996-06-18 Sealed Unit Parts Co., Inc. Adjustable electronic potential relay
KR100233052B1 (ko) * 1997-11-04 1999-12-01 윤종용 전자렌지의 전원공급회로
NL1021382C2 (nl) * 2002-09-03 2004-03-05 Iku Holding Montfoort Bv Electromotorschakeling met beveiliging tegen overbelasting.
US6982539B1 (en) 2004-03-11 2006-01-03 Diversitech Corporation Motor starting device
DE102006021256A1 (de) 2006-04-28 2007-11-08 Danfoss Compressors Gmbh Motorstartschaltkreis
DE102006034499A1 (de) * 2006-07-19 2008-01-31 Danfoss Compressors Gmbh Motorstartschaltkreis
DE102006053524B4 (de) * 2006-11-07 2011-05-26 Danfoss Flensburg Gmbh Motorstartschaltkreis
GB2497648B (en) * 2011-12-16 2017-10-11 Secop Gmbh An AC asynchronous motor

Citations (2)

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Publication number Priority date Publication date Assignee Title
FR1250655A (fr) * 1959-12-04 1961-01-13 Ernault Batignolles H Perfectionnements aux dispositifs de commande de contacteurs de moteurs électriques, plus particulièrement pour machines-outils
FR2423047A1 (fr) * 1978-04-12 1979-11-09 Nissan Motor Equipement electrique de grande puissance utilisant des relais electriques

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US4395670A (en) * 1981-02-23 1983-07-26 Cuisinarts, Inc. Hybrid electrical braking method and system for tool equipment having induction motor drives
US4450397A (en) * 1982-09-30 1984-05-22 Rockwell International Corporation Electronic AC induction motor brake

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1250655A (fr) * 1959-12-04 1961-01-13 Ernault Batignolles H Perfectionnements aux dispositifs de commande de contacteurs de moteurs électriques, plus particulièrement pour machines-outils
FR2423047A1 (fr) * 1978-04-12 1979-11-09 Nissan Motor Equipement electrique de grande puissance utilisant des relais electriques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ENGINEERING, vol. 216, no. 3, mars 1976, pages 182-185, Londres, GB; B. COWLEY: "10 Ways not to design a relay circuit" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336973A1 (de) * 1987-10-07 1989-10-18 Fanuc Ltd. Notstop-regelschaltung
EP0336973A4 (en) * 1987-10-07 1992-08-19 Fanuc Ltd Emergency stop control circuit
CN109269758A (zh) * 2018-10-30 2019-01-25 北京航天益森风洞工程技术有限公司 一种风洞三自由度模型***机构控制***及方法
CN109269758B (zh) * 2018-10-30 2021-03-26 北京航天益森风洞工程技术有限公司 一种风洞三自由度模型***机构控制***及方法

Also Published As

Publication number Publication date
FR2593336B1 (fr) 1988-04-08
US4772808A (en) 1988-09-20
FR2593336A1 (fr) 1987-07-24

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