DE7622438U1 - Terminal, especially for connection boxes of automatic control circuits - Google Patents

Description

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description

Shell International Research

Maatschappij BV,
The Hague, Netherlands

Terminal,

especially for connection boxes of automatic control circuits

Terminal boxes in automatic control circuits generally have a large number of inputs and outputs. The receiving devices are connected to the inputs and the actuating devices to the outputs. The automatic Control circuit consists of a certain number of logical links between the outputs that make up the Determine the work of the actuating devices and the input signals arriving at the inputs.

The automatic control circuit forms an arrangement of logic connection circuits between the inputs and outputs. These link positions are, for example, with contactless components or with components of the relay type built up. Since such logic gating circuits function more highly with two different signal value ranges and low signal value range or signal value ranges 1 and O -, their input signals must as well as the output signals are of the same type - logical -. When

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the receiving devices deliver signals of a different type, the signals mentioned must be converted into those of the logic type before they reach the automatic control circuit.

Accordingly, the junction boxes in automatic control circuits have a number of inputs of the logic type and a series of logic-type outputs. For operational usefulness, the input and output connections are not directly connected to the logic gating circuit of the automatic control circuit. The junction box is provided with threaded connection terminals at the inputs and outputs. This facilitates the installation of the connection box and, above all, the subsequent release of one or more input or output lines to maintenance or Change purposes.

In the event of a fault, the faulty device or component must be disconnected from the terminal box of the automatic control circuit. So that the control circuit continues to work properly can, it is also generally advisable to use the entrance or exit that is normally associated with the disturbed Device is connected to simulate a logical signal corresponding to the normal switching state of said device or to replicate.

This simulation or replica is generally done by means of a makeshift or permanent cable arrangement. Although the control circuits operating on the principle of positive or mandatory safety (positive safety) is relatively simple, since it is then sufficient to connect to the separate or to apply a high level output, these operations nevertheless require a certain amount of time, for example to disconnect the device, to loosen a screw connection, to create another, short-term Connection for the purpose of signal simulation. Complications

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result, ν. m the her; The pensioner does not know at first which: ·. E ^: ti- odt.-r Au- ·, y jlement has failed.

Also:; i: id Mi; ^: Schiußk sten in at! o,; ι nheii 3t control circuits often in a comprehensive .he aatoumt. ι: · ne ^l nLocation incorporated _y the castle ■ aage a Gesaintüberwachung is ■. Under these circumstances, the operator is not allowed to intervene in the terminal boxes of the automatic control circuit without notifying the person in charge of overall monitoring. With this method of advance information, however, it is not possible to specify in detail those features that will be temporarily withdrawn from monitoring, especially if the disturbance has not yet been precisely determined.

It also complicates the maintenance procedures and to extend its duration and aggravate the difficulty of maintaining a general Monitoring of the automatically running processes.

The innovation is based on the task of creating a terminal that is there with a view to the implementation of Maintenance work allows the disturbed device to be disconnected and switched to signal simulation without disrupting the connections must be loosened at the connection terminal.

Furthermore, it should be possible for the connection terminal to switch to signal simulation for each input and Output device separate and in a simple manner the monitoring center to signal directly. In the absence of a simulation, the connection terminal should be. Switching ·, -tand des daraii connected input or output ^ angöge ^ '. te ::; anaeigen.

This task is called a connection terminal with cable guides for electrical conduction wires with j '■: ■ eivu: r Be.t.'estigungyvori'ichtun;'; zum Bei'er, t>, "; cn of a T.eitungsrlrahtt;? -; with inner elH ■ l.riychen Ie.i. learn i.um r. ! ek: tri: ■ <- !. ion Vyrhi.nd .e; n

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iltM · lead wires fastened in the cable entries newly solved in accordance with the fact that the terminal two Has pair of cable entries which are provided with two pairs of inner electrical conductors, with which the associated Lead wires come into contact when the fasteners have been tightened, and also a contact piece, which electrical contact either between the two inner conductors of the first pair or between the making two inner conductors of the second pair.

In one embodiment, the two inner conductors of each pair normally come into contact with each other, and that Contact piece is adjustable in two positions, in which there are the two inner conductors of the / zujpno ^ igen of the two pairs separates from each other.

This is preferably achieved in that the movable contact piece has an electrically insulating zone which able to occupy two positions in which they are between the two inner conductors of the respectively associated of the two Pairs arranged.

The movable contact piece advantageously has an electrical conductive zone, which is in one of the positions of the contact piece in which this the inner conductor of one of the pairs inner conductor separates from each other, with the other paa ^ inner conductor comes into contact.

The innovation creates a connection terminal, in particular can be used as an input or output terminal in the terminal boxes of automatic control circuits by in particular, it greatly simplifies the maintenance, testing and installation operations.

In a special embodiment it is movable Contact piece a spindle and extends through a passage to the outside of the terminal hir to one

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whose top appropriately arranged point to form a button for manual operation there. The button is arranged on the side of the electrically conductive zone facing away from the electrically insulating zone. The electrically conductive zone, which is arranged between the two inner conductors of one of the pairs, connects them electrically to one another at the same time when the contact piece assumes the lower position in which it separates the: η ·. < Ί rme on conductors of the other pair from one another.

In the most advantageous embodiment wcisL the movable one Contact piece has a second electrically conductive zone which is separated from its first electrically conductive zone and with a fifth inner conductor makes contact when the first electrically conductive zone with one of the pairs of inner Head makes contact. The movable contact piece also has a warning device, for example an electroluminescent one Diode, the terminals of which are connected to the first and the second electrically conductive zone. Is the device at an automatic control circuit switched on with positive safety when the contact piece is in the lower position occupies, then the electrical warning device can function as long as it is in its normal Switching state (state 1 or contact closed).

For the purpose of signal simulation, the terminal also has a diode between an inner conductor of one pair and an inner conductor of the other pair.

Advantageous features and configurations of the innovation are in the protection claims and in the following Description marked.

The preferred embodiment of the innovation is as follows explained on the basis of schematic drawings. It shows:

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Fig. 1 shows an electrical installation that uses the ordinary Shows components of a junction box in an automatic control circuit,

Fig. 2 is an axial section through a connection terminal after the innovation in its normal connection state,

3 shows an axial section on a larger scale through the spindle-shaped contact piece which forms part of the connection terminal according to FIG. 2, and

Fig. 4 is an axial section through the terminal according to the innovation in their signal simulation state for performing e.g. Maintenance work.

1, the connection box 1 of an automatic control circuit essentially contains an automatic control circuit 2 constructed as a logic circuit, for example from contactless components or from components of the relay type, the connection box 1 also has a group 3 of input connection terminals and a group 4 of output connection terminals. The individual connection terminals of the input group 3 are essentially connected to receiving devices which, in the case of an automatic control circuit with positive safety, normally supply a voltage + Vcc of a high level. In the event of a malfunction or a change in the switching status of the receiving device, this voltage disappears. The same occurs if the connection between the receiving device and the connection box 1 breaks. To carry out repair or maintenance work, it is absolutely necessary to disconnect the device at the input connection terminal. In order to simulate or reproduce a switching state 1 of the device mentioned, a voltage hVcc is then applied to the corresponding connection terminal,

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the: i m connection box 1 der autoniatitiohe.ii! tax: i <: kKt I l.wiir,: e.yatematitich is available.

The group 4 of exit points also has individual terminals connected to retraction devices Bind, which of the logical connections can be controlled according to the switching status of the receiving devices. In the same way as the input terminals these actuators are equipped with a positive safety system and maintenance work is carried out in the carried out in the same way as described above.

Certain transferred purely for the purposes of central monitoring Output terminals signals to the control center to all or part of the receiving or actuating devices which are disconnected from the automatic control circuit.

The terminal shown in Fig. 2 to 4 is in one Terminal box 1 of an automatic control circuit 2 of the type shown in Fig. 1 as an input or output terminal usable.

According to the axial section in FIG. 2, the connection terminal has a housing 10, the base of which is provided with a profile piece 9 is provided, for example for attachment to a

Rail is determined according to DIN regulations. The Housing 10 has a first pair of cable entries at its upper part 'm 11 and 12, which are arranged opposite one another on both sides of the housing 10; i.nd. The cable entries 11 and 12 are with associated ^^ jn fastening devices 13 and 14 - see.

Inside the case; · IO l ^ fiadf '■ i e: i η pair inner

electrical ·. ■ r conductors · 15 and 16, "h. are suitable for

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in the.,

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to lay against each other. If after introducing e ectrios see Lead wires into the cable entries 11 and 12 the Fasteners 13 and 14 are tightened between the lead wires and the associated flexible, strip-shaped inner conductors 15 and 16 electrically Contact made.

The cable entries 11 and 12 take this, for example from the receiving device or the cable to the automatic control circuit 2 leading line label. Conversely, you can also do that from the automatic. Control circuit Record 2 incoming cable and the cable going to the actuating device.

In its lower part, the housing 10 has a second pair of cable entries 21 and 22 which are provided with fastening devices 23 and 24. Inside the housing 10, a second pair of inner conductors 25 and 26 are disposed in the same manner as the first pair. The inner conductors 25 and 26 are flexible strips with curled ends 27 and 28. Like the conductors 15 and 16, the flexible, strip-shaped conductors 25 and 26 are aligned with one another and are able to come into contact with one another by means of their curled ends 27 and 28.

To establish the electrical contact either between the two inner conductors 15 and 16 of the first pair or between the two inner conductors 25 and 26 of the second pair, a movable contact piece 30 is used, which in the example shown is designed as a spindle and is divided into a liner and an upper one Position is adjustable. There::. Contact piece 30, which is drawn in Fig. 2 in its lower position, has an electrically insulating zone 3 '' ^u nd after this a first electrically .leitende zone 32. The electrically conductive region 32 extends through a passage 34 to the Top of the housing 10, behind the na.:; i; ontak.1 ,: ¹ i.iick forms a button 33 for manual adjustment. The button

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takes in particular in its upper part an electrical warning device 35, which is described in more detail below and is designed as an electroluminescent diode in the example shown.

Between the inner conductor 16 and the inner conductor 26, a one-way conductive diode 37 is fixedly arranged, the anode of which is connected to the conductor 26 in the example shown, while its cathode is connected to the conductor 16 is.

According to FIG. 2, the electrically insulating zone 31 is the contact piece 30 arranged between the inner conductors 25 and 26, which consequently keeps them separate from each other and prevents them from making electrical contact.

Similarly, the electrically conductive zone 32 of the Contact piece 30 between the inner conductors 15 and 16 arranged. However, since zone 32 is an electrical Conducting zone is, it makes contact with the two conductors 15 and 16 and creates a between them electrical connection. It should be checked in an appropriate manner that the electrically conductive zone 32 in the lower position of the movable ^ spindle-shaped contact piece 30 between itself and the two inner conductors 15 and 16 makes electrical contact that the contact piece 30, on the other hand, with its electrically insulating zone 31 in that it is located between the inner conductors 25 and 26 of the other pair, conductors 25 and 26 separates from each other.

The cable entry 21 is connected to the connection box 1 of the automatic control circuit 2 via an inner lead wire the voltage with polarity + Vcc. Another possibility is to give the cable entry 21 this voltage, for example to be supplied via a busbar. On the other side of the terminal, the other cable entry 22 of the

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second pair pick up a conductor leading to a signaling system belongs, for example, housed in the central monitoring desk.

As already mentioned, the contact piece 30 is η Pig. 2 in its normal position drawn in which the device, either a receiving or an actuating device, with the automatic control circuit 2 is connected. The pair of upper conductors 15 and 16 represents the electrically conductive one Zone 32 of the contact piece 30 provides an electrical connection between the receiving or actuating device and the control circuit 2.

In contrast, the electrically insulating zone 31 separates the inner ones Conductors 25 and 26 of the second pair from each other, and the polarity + Vcc is therefore not used.

According to FIG. 2, a signaling device is connected to the terminal Warning device 35 attached, the normal working of the connected receiving or actuating Device.

On the side facing away from the electrically conductive zone 32 of the electrically insulating zone 31, a second electrically conductive zone 37 'is arranged at the end of the contact piece 30. In the lower position of the contact piece 30 acts the electrically conductive zone 37 'with a fifth inner one Conductor 38 of the connector together. Preferably over an inner lead wire to the junction box 1, which is in a fifth cable entry 39 with a not shown Fastening device is added, receives the fifth Conductor 38 has the polarity -Vcc, which he then connects to the second electrically conductive zone 37 'of the contact piece 30 applies, when the contact piece 30 assumes its lower position (Fig. 2). Of course, the contact piece 30 is in its lower or depressed position on the flexible, strip-shaped fifth conductor 38 vcii one not shown Device kept in plant, which a ratchet,

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l'ig. ² Rii't- a clear; diere Vox'üIpI '■. <f ^r from the second electrically conductive zo .; 37 ', the electrically insulating zone 31 and the first electrically conductive zone 32, which together form the contact piece 30. As already mentioned, on the side of the conductive zone 32 facing away from the insulating zone 31, a button 33 for manual adjustment or actuation is arranged, which contains the above-mentioned electrical warning device 35 in the form of an electroluminescent diode. One of the wires of the warning device 35 is permanently connected via a resistor 40 to one of the two electrically conductive zones 32 and 37 ', in the example shown to the first conductive zone 32. In addition, the conductive zone 32 and the insulating zone 31 are pierced axially, and a connection between the second output wire of the warning device 35 and the second electrically conductive zone 37 'is arranged in this hole. Of course, this wire is electrically insulated from the first electrically conductive zone 32 by means not shown.

Accordingly, the warning device 35 is connected to the first and second electrically conductive zone 32 and 37 '. Due to the positive safety mentioned above, the receiving device supplies a voltage + Vcc in its normal switching state or the actuating device receives a voltage + Vcc in its normal switching state. The lighting of the warning device corresponds systematically to this normal switching state; 3 '»·

In Fig. 4 , the connection terminal according to the innovation is shown in their simulation state. The contact piece 30 assumes an upper or pulled position. For the Bogren ^ Mug of the normal adjustment of the contact piece it 30 v-'uv outside of the housing ::! 10 work towards school .tern Ύ ?. ;.:. u der χαοΊ u. rotrliin

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'/,out! W of the contact piece it 30 together with radial cams or stops 43, which are integrally or firmly connected to the housing 10 of the terminal. Of course, the contact piece 30 still wets itself by pulling it up, for example after rotating it through 90 degrees. This enables the contact piece 30 to be exchanged in the event of failure or malfunction of the warning device 35.

In Fig. 2 it can be seen that when the diode 37 is short-circuited, the one arranged in the cable entry 22 Signaling conductor is switched on.

In the switching position shown in Fig. 4 is the electrically insulating zone 31 arranged between the two conductors 15 and 16 of the first pair, which are then electrically are separated from each other.

In contrast, the two inner conductors 25 and 26 are the second Couple released and come in their natural position at their ends 27 and 28 in contact. Of course is the adjustment of the contact piece 30 large enough so that both its isolating zone 31 | as well as its electrically conductive zone 37 * clearly separate from FIG. 1 the two inner conductors 25 and 26 of the second pair | and thus the insulating zone 31 easily takes the place f of the first electrically conductive zone 32 between the two |

inner conductors 15 and 16 of the first pair can occupy. a

Under these circumstances the second electrically conductive |

Zone 37 'with the fifth inner conductor 38 no longer ^: |

in touch. ;

The polarity + Vcc is now <by means of the conductors 25 and 26 and the diode 37 is applied to the conductor 16 and is transmitted from there to the automatic control circuit 2, whereby

the simulation is carried out. At the same time, the \

named polarity by the specially provided and arranged in the cable entry 22 conductors to the

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Signali aiervorrichtungeii be applied. According to the innovation, Bich lets the simulation signal for all devices, however, this possibility is not necessarily used in all cases.

The implementation of the simulation in accordance with the innovation is carried out by the diode 37 enables. The diode 37 is, at least in Case of the input connection glue, by 'uior'nen> n der Terminal in an appropriate manner leather-coated. Thus it can also be provided on the outside no. for example by arranging them like the other conductors through the cable entries 12 and 22.

As soon as the contact piece 30 is raised as shown in FIG. 4, the device in question is immediately disconnected and if necessary the simulation is switched on at the same time. When the signaling conductor is present in the cable entry 22 is, the switching on of the device is signaled in a similar way at the same time.

It is important to note the simplicity of maintenance refer to the device after the innovation. The warning device in the form of the electroluminescent diode immediately shows those terminals that are connected to devices that are in an abnormal switching state condition. By simply pulling up the contact piece 30, the necessary to remedy the malfunction are three functions performed immediately, namely disconnecting the device, supplying its normal functioning simulating signal to the automatic control circuit 2, and the display of this simulation on the central monitoring desk .

The fastening device provided for each line wire cable entry could be of the screw type, a faston connection have or even be designed as a welded connection. In addition, ti / e connector can be mixed up with

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Apply the voltages -i-Vcc and -Vco ebon no as by swapping the connections of the .Uiodt. \ 'l be made suitable for a system or a circuit is _t in which in a normal switching state at the outputs to the actuating devices, the level 0th

/ Protection claims

7622438 11.11.76

Claims (11)

1Ü-4Ü 170 S C II U ΐ Z Λ M S P R Ü G II E 1. Terminal with cable entries for electrical lead wires, each with a fastening device for fastening a lead wire and with internal electrical conductors for electrically connecting the lead wires fastened in the cable entries, characterized in that it has two pairs of cable entries (11, 12; 21, 22), which are provided with two pairs of inner electrical conductors (15, 16; 25, 26) with which the associated lead wires come into contact when the fastening devices (13, 14; 23, 24) are tightened, and also a contact piece (30) which allows electrical contact either between the two inner conductors (15,16) of the first pair or between the two conductors (25,26) of the second pair. 2. Terminal according to claim 1, characterized in that g e k e η η that the two inner conductors (15,16; 25,26) of each pair normally come into contact with one another, and that the contact piece (30) is adjustable in two positions is, in which it separates the two inner conductors (15, 16; 25, 26) of the respective associated of the two pairs from one another. 3. Terminal according to claim 2, characterized in that the movable contact piece (30) an electrically insulating zone (31) which is able to occupy two positions in which they are between the two inner conductors (15, 16; 25, 26) of the respective associated of the two pairs is arranged. 4. Terminal according to claim 3, characterized in that g e k e η η that the movable contact piece (30) has an electrically conductive zone (32) in one of the 7622438 11.11.7e Positions dos KontaJdntüek os ('} (>), in de ι cJ: io! I (. · :; ilic ■ · ,,,> ■ ι inner L e j. I, er (2b, Vt->) ei rißa dor · pairs of inner Let .Let- (I ¹ ', I'. S'3,26) separates from each other, with the and ü j. on pair i »in ι ■ ι f .; ι · conductor (15,16) comes into contact. 5 · Connection terminal according to claim 4, characterized in that g e k e π η - indicates that the movable contact piece (30) a The spindle is and extends through a passage (34) to the outside the terminal extends out to form a button (33) for manual adjustment there, which is attached to the electrically insulating zone (31) facing away from the electrically conductive zone (32) is arranged, wherein the electrically conductive zone (32) in the lower position of the contact piece (30), in which this the two conductors (25,26) one of the pairs separates from one another, is arranged between the two inner conductors (15, 16) of the other pair and these electrically connects to each other. 6. Terminal according to claims 4 and 5, characterized in that the movable contact piece (30) has a second electrically conductive zone (37 *) which is separated from its first electrically conductive zone (32) is separated and comes into contact with a fifth inner conductor (38) when the first electrically conductive zone (32) comes into contact with one of the pairs of inner conductors (15, 16), and also an electrical warning device (35)? their connections with the first and the second electrically conductive Zone (32,37 ') are connected. 7. Terminal according to claim 6, characterized in that ε ·, ι c a fifth anel entry (39) for lead wire with a fastening device, the fifth inner conductor (3o) being arranged in such a way that it is fastened with a guide in the f-pni'te-Ku ^ eJ ^ j. ·> ^ (39) Wire together. / 6? 2 ίο - ν / - 4ö 170 8. Terminal according to claim 6 or Ί, daduru
characterized in that the electrical warning device (35) is an electroluminescent ^ Din, ■■ j . shows. 9. Terminal according to one of claims 1 to o,
characterized in that the first pair
Cable entries (11, 12) for a conductor between an automatic control circuit (2) and a receiving or an actuating outdoor unit and the second pair
Cable entries (21,22) for a conductor between one Simulation signal and a device that performs this simulation
signals, is provided. : 10. Terminal according to one of claims 1 to 9? j characterized in that it is a diode (37) t between an inner conductor (16) of one \ Pair and an inner conductor (26) of the other pair \ having. _: 11. Terminal according to one of claims 1 to 10, 'characterized in that the inner conductors ( (15, 16; 25, 26) of a pair of mutually aligned flexible strips are and at their rolled ends (17, 18; 27, 28 ) ί come into mutual contact that the cable entries (11,12; 21,22) of a pair are aligned with each other and at \ are arranged on both sides of the terminal so that the contact points of the flexible, strip-shaped conductors (15, 16; 25, 26) form a straight line running essentially at right angles to the conductors (15, 16; 25, 26) , and that the
Cable entries (11, 12; 21, 22) are arranged on both sides of the terminal in parallel above this straight line. ^{! f} - I I. 11. / o