DE1563877A1 - Remote control system - Google Patents

Description

Remote control system.

This invention "relates to a control system for electrical devices and in particular to an improved control system for electrical devices, which can be operated from a remote control station.

The remote control of electrical apparatus or devices, for example a motor or motors is possible with a number of different electrical systems. The most common system for controlling a Remote Motor uses four wire connections between the remote control and the point of view of the engine. One of these wire lines is

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Patent attorneys Dipl.-Ing. Martin Licht, Dipl.-Wirtsch.-Ing. Axel Hansmann, Dipl.-Phys. Sebastian Herrmann 8 MÖNCHEN 2, THERESIENSTRASSE 33 · Telephone - 2921 02 · Telegram address: Lipatli / Munich

Oppenauer Büro.- PATENT ADVOCATE DR. REINHOLD SCHMIDT

homely one from the power source, strong wire Management; the other three conductors consist of a single, strong-wire line to briefly turn on the starter of the kotor to be connected to the current using a starter switch at the remote control station, from · -i: i <-r i.i.rV.Vä'- 1 · i £ -; ·. ■ * ■ Line to briefly switch off the power supply to the starter of the To interrupt the motor, and finally from a wire line to the status display of the liotors, d. H. to indicate whether the motor is running or stopped. Ii s is clear that with one Four-wire system a large amount of wireline is used when the remote control station is at a certain distance attached to the 1st Iotor to be controlled. aside from that three of the four wires must be strong enough to carry the current required to start the engine. Conventional personal control systems therefore require a considerable amount borrowed length of strong wire conductor. A saving either in the overall length of the wire or in the size of the wires would mean a considerable saving. The present Invention makes both a saving in the overall length and in the diameter of the wires possible. The through the Reduction in wire length and wire thickness resulted in! Savings with the help of the personal control system according to the invention can best be illustrated using a multiple motor arrangement. While the 3 savings in line

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cost with a single Kotor with the help of a remote control systems as two-wire versions compared to conventional designs opposite four wires can be expressed the! savings with an n-motor arrangement as η + 1 to 4n designated. With a 10-rotor arrangement, the savings could be These can be referred to as 11 lead wires to 40 lead wires, which corresponds to about 72.5 * ^ savings.

£ s are some lctor remote control devices which _A e He duz ic tion of Lrahtlänge-as well as a reduction of ^ rahtdurchmessers achieve both eir; however, these have turned out to be iir. 3 ^ tri »b have proven to be unreliable, especially those systems which contain voltage-sensitive components, such as B. Iiodon, v - '; - rvv =: ni-: n. Lioaen fail in field operations because of Spannu; _A £: 3-stage lightning storm- ".

With -i · r in front of ^ icg-nde :. .. 'invention sell ^ in Forns teu rungs-3VStOc for e-likrrischj devices created who the:, with which dij Aixza.:;! olo>->;ri.; ch- / r lines between the Fernstauerstv 11 ·. un.i acz. Apparatus or the device reduces vvira. Lit aen: erfi: -viur ^ rs £ r -.- n: äi- ^: n F - rr: Steuungssysteni it should also be possible :: = -. I:., Di · .- Abn.-isur.fr der electrical. Lines between the distant Ii-. ₍ - ~ well -? moreover, proportionately

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be insensitive to voltage surges caused by lightning could occur.

The remote control system according to the invention is only used to start up the apparatus and the indicator lamp, while the power source of the apparatus itself is used to build the apparatus and the indicator lamp.

The remote control system according to the invention for operating an electrical apparatus consists of a control unit and a remote control unit. The control unit has a control relay, while the remotely mounted Control station or the remote control system with a remote attached Stromauelle and a starter shutdown device for optional excitation and disconnection of the relay and equipped with a device to display the operating position of the device is. The circuit starting the apparatus includes a power source for the apparatus and a control switch fitted; this control switch can be operated with the aid of the control relay which is connected to the control unit. 7 / hen the control switch is actuated, it closes the start or Starting circuit of the apparatus, whereby the current source of the Device is connected to this. Sin auxiliary switch is with connected to the control unit and is only actuated when the starting circuit of the apparatus is closed. L. the tax

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unit "there is a coupling device to the power supply to couple the power source of the apparatus with the control unit when the starting circuit of the apparatus is closed is. The power supply coupled to the control unit stops after the remote power source has been turned off, energizing the control relay to hold the control switch closed; the starting or starting circuit is maintained to continue to supply power to the apparatus. ~

The invention is explained with reference to the accompanying drawing.

Fig. 1 is a schematic circuit diagram of the remote control system according to the invention »

In the following an embodiment of the invention is presented, with the help of the remote control system an electric motor "is controlled.

The remote control point is shown as box 13 shown in dashed lines. The removed Attached power source 14 is via the electrical conductor 16 with a terminal of the starter button 15 in connection. The electrical conductor 18, which connects the remote control point with the motor control unit 32

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det, is to another connection terminal of the starter button 15 connected. 3in second conductor 20, which over the Eräverbindungen 22 is grounded is also connected to the remote power source 14. The electrical conductor extends similar to the electrical conductor 13 from the remote control point 13 to the engine control unit 32, thereby forming a pair of conductors, an electrical connection 24 extends from electrical conductor 20 to a connection terminal of a cut-off button 26. Me other connection terminal of the shut-off button 26 is via an electrical conductor 25 to one terminal of a second pair of terminals of the start button 15 connected. The other terminal is connected to the conductor 18 via the conductor 27. The second Pair of terminals is through a conductor 28 that runs across the terminals come to rest, connected to each other when the starter button is in the rest position; this ladder is removed, when the start button is pressed. The actuation of the switch-off button 26 would normally make the connection between conductors 18 and 20. The actuation of the shutdown button 26 would, however, be covered by the actuation of the starter button 15, which the electrical connection between the Conductors 18 and 20 would break by moving conductor 26 from its normal position over the second pair of terminals of the starter button 15 removed. It can be seen that the start button 15 and the shut-off button 26 do not work at the same time.

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can become sam. An indicator lamp 30 is parallel to the Conductors 18 "and 20 are switched. It lights up as long as the starter button is pressed 15 is depressed, whereby the operability ^ it of the Indicator light is checked. In the motor control unit 32, the pair of electrical conductors 18 and 20 are parallel a control relay 34. When the starter button 15 is depressed the power source 14 connected via the electrical conductors 16 and 18 to a terminal of the control relay 34, while the other terminal of the relay is connected to the common electrical ground line 20. As a result, the control relay 34, which actuates an associated switch 36, is operated.

Eer switch 36 associated with relay 34 is with.einer Iuotor starting unit 40 in connection; this consists of the usual outlet coil 42, the overload relay 44 and from the motor switches 45 »46 and 47, which by the excitation the starting coil 42 are actuated. The starting unit corresponds to the standard version of a combination lagnet fcotcranlass, like him from the General Electric Company and the Testinghouse Corporation is manufactured.

The motor starter unit is connected to three phases via the lines 50, 51 and 52 connected to control the soldering machine. I / he Jtrom aas line 5C runs into a conductor 54 which is connected to

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one terminal of a shutdown button 56 is connected. This shut-off button 56 is located at a control point 81. The other connection terminal of the shut-off button is connected to a connection terminal of the control switch via a conductor 58 36 in connection. In normal Euhelage the terminals of the shutdown button 56 are connected to one another to an electrical Establish connection through the stop button. The other connector of the control switch 36 is connected to a connection terminal of the starting coil 42 via a conductor 60. the The other connection terminal of the starting coil 42 is connected to the conductor 51 via a conductor 62 and an overload switch 44. The energization of the starting coil 42 operates the associated switches 45 »46 and 47 and a maximum switch 72. Each of the Switches 45, 46 and 47 are located in the respective associated Power lines 50, 51 and 52.

When starting up, the starter button 15 is depressed, so that the circuit with the., 'Schselstromquelle 14 closed is. This energizes the control relay 34. The excitation of the control relay 34 actuates the associated control switch 36. The excitation: aes control switch 36 closes the one that starts the motor Circuit, which differs from the current source of the Kotors through conductor 50, conductor 54, shutdown button 56, conductor 50, actuated control switch 36, conductor 60, the Starting coil 42, the circuit breaker 44, the conductor 62 and the

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. Conductor 51 extends back to the power source of the motor 'This closed circuit for leaving the motor calls for excitement.' generation of the Änlaß-spule 42, whereby the associated switches 45, 4 & and 47 are operated. These connect the three phases of the motor power source via the electrical conductors 5Ö * .51 and 52 with the motor in order to drive it.

An electrical conductor 64 extends from a connection terminal of the starting coil 42 to a terminal of the primary coil of a control transformer 66 j which is located in the control unit 32. The other connection terminal of the primary coil of the control impregnator 66 is connected to the other connection terminal of the inlet coil 42 via the electrical conductors 68 and 62. The control transformer 66 is a step-down transformer which köjlpeitt the voltage in the starting circuit of the MötöfeS with the control circuit of the control unit 32. The Mötof power source has 220 volts euf * while the control circuit of the unit 32 is below 10 volts works. the ratio of the primary z ^j ur secondary winding of the transformer 1st thus chosen so that the voltage on the correct ', Vert is lowered. one terminal of the Sekundäispule of' is Tröiisfoimätors terminal via the electrical conductor 70 with a connection • the Control relay 34 connected, while άί & other Mi circuit terminal of the secondary coil of the control impregnation transformer 66 via the conductor 74 with a terminal of an auxiliary holder 72 is connected j this auxiliary switch is through tiie

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Änlaßspule 42 controlled. A resistance. 76 with pasSeiiSeffi V / stand value * "with 400 ohms, for example, is connected in series in the electrical conductor 74. The other terminal of the safety 74 is connected to the other terminal of the control relay 34 · control unit 32 from the Sekufidärspule the control ^ Tr fits-förmators 66 deft through the conductor 70, the control relay 34 # ililfsschalter 72, the resistor 76 uad back to SeiuMärs-iHile of the transformer 66. Lord of the auxiliary switch 72 is operated by the Sfrfegöng the ÄQlaßspule 42 is, then the ⁴ SteueröitgEfötfo'mkreis is closed and the control relay 34 is held in its energized position ^ after it has been energized by the remote control unit 14 by momentary contact of the starter button 15 on the eüifeföi located control unit that the control relay 34 belongs to both the circuit äsf the control unit and the Steuerstföiakfeis of the feittteit 32. The control panel 34 is excited by the attached control unit 13 from the actuation of the button 15 and into this? The excited position is held by the control unit of the control unit 32, the flow from the remote control unit 13 would be closed; the control unit 32 derives its excitation from the power source of the motor by the motor starting circuit, the motor starting circuit only being closed because the switch 36 of the motor starting circuit is carried out by the associated one

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Control relay 34 was enabled in the control circuit. In similarly, the control relay 34 is kept energized only as long as the starting coil 42 is energized to the auxiliary switch 72 in its actuated position.

The induced in the secondary coil of the control transformer 66 Voltage is applied not only in parallel to control relay 34 but also in parallel to indicator lamp 30; these Indicator lamp 3C is located at the remote control station and is connected in parallel with ^ the control relay 34 connected. Thus, the secondary voltage of the control transformer becomes across the conductor Ib and the common ground line 20 applied to close a circuit which the indicator light ' 30 powered.

The electrical connections and the operation of the circuits have been described in connection with the operation of the starter button 15 at a remote control station 13. The actuation of the shut-off button 26 on the remote control loop -13 creates a short-circuited line connection between the conductor 13 and the conductor 20, so that the voltage applied in parallel to the control relay 34 from the secondary coil of the third = aer-Irausf o.rmators 6b that the conductor 23 of the starter button 1 ?, acii ~ eiter 25, the switch-off button 26 and the conductor ei-i briefly g -.- is connected, ^ in resistor 76 of a suitable

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7 / ert, for example of 400 ohms, is located in the control circuit of the control unit 32 in order to limit the flow of current if the control relay 34 is short-circuited by actuating the switch-off button 26. Resistor 76 also reduces the flow of current when the voltage of the idotor power supply is coupled to the control circuit via control transformer 66, while the remote power source is coupled via lines 18 and 20 to the control circuit of control unit 32 and when the voltages on these two circuits are out of phase. This situation may exist in the overlapping period of time when the control switch 36 and auxiliary switch 72 were closed and before the shut-off button 15 was released, or when the start button is pressed while the engine is running. If the short-circuited circuit is closed, then the control relay 34 is switched off, whereby the switch 36 in the Lotor starting circuit of the üio toranlasse rs 40 is opened; this causes the starting coil 42 to be switched off, whereupon the motor is also switched off and stopped, if the starting coil 42 is switched off, then the auxiliary switch 72 is switched off, whereby the control circuit of the control unit 3 * 2 is opened; thus the voltage parallel to the control relay 34 can no longer be maintained. La by switching off the auxiliary switch 72, which causes the control current circuit to open, no voltage in parallel with the

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Control relay 34 is applied, there is also no voltage parallel to the motor indicator lamp 30 * which is parallel to the control relay 34 is switched. The indicator lamp is no longer lit. 3s it should be mentioned that the distant The engine control system is now in its starting position, ready for another starting process.

A local control point 81 is provided, which essentially consists of a start button 82 and a shut-off button 56 exists. As already mentioned, the peel pot 56 used in the motor starter circuit; in its normal days it is switched on and establishes a continuation connection. The actuation of the Ahläßkhopfes 82 establishes the connection of. the power source of the motor via conductor 5Ö »conductor 54» den Ahiäßkhbpf 5Ö »the leader Ö4» äeii AhiaB'tnöiif 82 üiid dem Conductor 8 (5 her ', which kit the conductor 64 and a connector the AhiäÖspiiie 42 is allied; the other AhächlüB-kiemme the starter sink 42 is connected to the power source via the conductor 51 in connection. The actuation of the Ariläßknbpfes 82 steÜt a soft connection M "establishes the motor-output circuit that the terbihdühg to the AhlaBäpüie through the conductor 58 iihd dek We use control switch 36 of control relay 34 ^. Ühgöackle ^ whether the control relay 34 and the associated switch ΐι5 energized Whether or not it is, is activated by the actuation of the trigger 82 a voltage is placed in parallel with the starting coil 42, uia the motor in To put operation. Once the motor starts, the visual

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ter 36 closed because the control relay 34 due to the power off the motor Stfomauelle, which is coupled to the control circuit is aroused. In the same way, by actuating the shut-off button 56, the circuit that switches on the motor is opened; whereby the starting coil 42 and thus the switches 45, and 47 are switched off and the engine is stopped.

The remote control system described is not only for remotely controlled electric motors suitable, but can be used by anyone Voltage can easily be used for any remotely controllable electrical apparatus.

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Claims (8)

a MONCHEN2 .THEREsiENSTRAssE 33 Dipl.-Wirtsch.-Ing. AXEL HANSMANN 1563877 DiPL-PlIyS1SEBASTlANHERRMANN TEXACO LiiVüLOBLäilT CORPORATION 3Κ.Ί YORK, N ··;. ¥ YORK 10017 Munich, December 29, 1966 iSAST 42nd S! 'REJT 135 lfc ... "_ .. Your reference Our mark V. St. A. Patent Application: "Remote Control System" PATENT CLAIMS 1. Remote control system for the operation of electrical equipment _Y, characterized in that a control circuit (32) is equipped with a control relay (34) that a remote control location (13) with a power source (14) ) and an AnIaQ switch-off device (15 »26), with which the control relay (34) is optionally energized or switched off, let an apparatus starter circuit (40) be connected to the power source of the apparatus, so that a control switch (3- ö) can be actuated by the control relay (34) and is connected to the apparatus S ^ aorstromkreis (40) to close this, whereby the power source of the apparatus is brought into connection with this, that a? Coupling device (ob) tr.it d? M Stouerstroiakreis (32) is connected to the power supply d; 009815/0855 Patent attorneys Dipl.-Ing. Martin Licht, Dipl.-Wirtsch.-Ing. Axel Hansmann, Dipl.-Phys. Sebastian Herrmann 6 MÖNCHEN 2, T H E R E S I E N S T R AS S E 33 ■ Telephone: 29 21 02 · Telegram address: lipatli / Munich Bank connections Deutsche Bonn AG, Munich branch, Viktualienmarkt dep., Account no. 70'30438 Bove 'Vetemsbonk Manche ·' 2v% e ^: gsl Osiar-von-Miller-Ring. KIo-Nr eS2 ^? 5 · PoMscheck-Account: Munich Nr. 163397 BATH ORIGINAL is closed that an auxiliary switch (72) is in the Starting circuit (32) "is located to the starting circuit only to close when the apparatus starting circuit (40) is closed, that the coupled power supply from the power source of the Apparatus delivers the power supply required in the control unit to excite the control relay (34 ·) after it has been switched off the remote power source (14) to keep the control switch (36) closed, whereby the starting circuit (40) remains closed in order to continue to supply power to the apparatus. 2. Pern control system according to claim 1, characterized in that the coupling device (66) is a transformer has, the ratio of the primary winding to the secondary winding is chosen so that the voltage of the apparatus is transformed down to a voltage which corresponds to the voltage of the remote control point, wherein the voltage of the apparatus is isolated from the earth potential. 3. Pern control system according to claim 1, characterized in that a local start-up shutdown device (56, 82) is provided to operate the apparatus independently of the remote starter shutdown device (15, 26) that the local starting device has a button (82) which, when actuated, connects a circuit from the power source of the apparatus 009815/0855 ~~ 45 ~ tes to a starting coil (42) and associated switches (45th, 46, 47) closes, these switches being the power source of the Connect the apparatus with this, that the local disconnection device (56) normally the power source of the apparatus with the starting coil (42) of the apparatus through the control relay (34) in the starting circuit (40) that connects the local disconnection device when actuated, the starting circuit (32) is interrupted, so that the power source of the apparatus is switched off from the starting coil (42) of the apparatus, so that the apparatus itself comes to a standstill. 4. Remote control system according to claim 1, characterized in that the control circuit (32) with the removed lying control point (13) is connected with the help of a pair of electrical conductors (18, 20) that the disconnection device (26) connected in the remote control station (13) between the pair of conductors (18, 20) in parallel with the control relay (34) is to create a short circuit for the power supply coupled to the control circuit from the power source of the apparatus to form, whereby the control relay (34) switched off and the control switch (36) and thus the starting circuit (40) opened to stop the machine. 5. Pern control system according to claim 4 »characterized by 009815/0855 - jf - indicates that a display device (30) is provided in the remote control station (13), the display device is mounted between the conductors (18, 20) parallel to the control relay (34) that the display device is energized with the aid of the current which is coupled to the control circuit (32) by the power source of the apparatus, so that with the aid of the display device the operation of the device is displayed. 6. Remote control system according to claim 4, characterized in that that a resistor (76) of suitable size is provided in the control circuit (32) to prevent the flow therein limit when the control relay (34) is short-circuited with the help of the cut-off device (26) and when the power source of the apparatus and the power source of the remote control station simultaneously out of phase in the control circuit be connected to each other. 7. Remote control system according to claim 5, characterized in that the display device (30) on the remote Control station is a lamp, the switching on of which reproduces the excitation of the apparatus, while it is switched off, it is switched off of the apparatus. 8. Remote control system for electrical apparatus, thereby 009815/0855 - & - characterized in that a display ghost (30) is attached in a remote control point (13), furthermore one at a distance lying voltage source (14) for initiating the operation of the apparatus and a start-up shutdown control device (26, 28), that a control circuit (32) to the remote control station (13) by means of a pair of electrical conductors (18, 20) is connected to that one (20) of the pair of electrical conductors is grounded that a control relay (34) both with the remote control station (13) and with the control circuit (32) is in connection that the control relay (34) connected in parallel to the pair of electrical conductors (18, 20) and through the starter switch-off device can be operated at the remote control station, that a circuit that starts the apparatus (40) has a starting coil (42) for the apparatus and associated switch (45, 46, 47) which is a power source of the Connect the apparatus with this, that a control switch (36) is connected to the starting circuit of the apparatus and through the Control relay (34) is operable to close the starting circuit so that the power source of the apparatus is connected to this that the control circuit is a circuit coupling device (66) has to couple the voltage in the starting circuit of the apparatus to the control circuit that another Apparatus holder (72) connected to the control circuit and operated with the aid of the starting coil of the apparatus to with Excitation a connection between the coupling device (66) 009815/0855 of the apparatus and the control relay (34) so that the control circuit (32) is closed and the control relay (34) remains energized after the remote power source has been interrupted that the display device (30) in the remote control point (13) between the pair of conductors (18, 20) is connected in parallel to the control relay (34), in order to indicate when the control circuit is energized that the device to be controlled is switched on, that the disconnection device (26) in the remote control point between the pair of conductors in parallel with the control relay (34) is connected to, when energized, the control relay short-circuited, so that the switch (36) of the control relay in the starting circuit of the Device switched off and thereby the apparatus is put out of operation, and that the further switch (72) of the apparatus is switched off to the To open the control circuit (32), so that the control relay (34) and the display device (30) at the remote control station (13) are put out of operation. 009815/0855