EP0246259A1 - Dispositif de raccordement modulaire des organes d'une installation industrielle a une unite de commande programmable - Google Patents
Dispositif de raccordement modulaire des organes d'une installation industrielle a une unite de commande programmableInfo
- Publication number
- EP0246259A1 EP0246259A1 EP19860906347 EP86906347A EP0246259A1 EP 0246259 A1 EP0246259 A1 EP 0246259A1 EP 19860906347 EP19860906347 EP 19860906347 EP 86906347 A EP86906347 A EP 86906347A EP 0246259 A1 EP0246259 A1 EP 0246259A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- connection
- support
- connection device
- line
- 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- Withdrawn
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Classifications
-
- 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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
Definitions
- Modular connection device for the organs of an industrial installation to a programmable control unit.
- the present invention relates to the means of electrical, electronic and informational connections established between a programmable control unit and the organs of a machine or an industrial installation managed by this control unit.
- the invention relates to a device allowing a simple and rational connection of each of these members to the control unit.
- An industrial installation such as, for example a production machine managed by a programmable control unit, is an installation in which the functions performed by power devices (jacks, motors, etc.) are controlled in sequences and according to cycles which result from the programming of the comma unit which "dialogues" with essentially two types of organs associated with the power di spositi fs.
- pre-actuators solenoid contactors, etc.
- sensors or detectors which emit information directed towards the control unit to inform it of the state in which the power devices are at a given instant or more generally on the existence or non-existence of a cause ( physical quantity, event, presence of an object whose knowledge by the control unit is required in the program, and constitutes a stage in its development.
- Physical quantity must be understood not only the magnitude in itself (current, voltage, pressure, flow, temperature length, time ..) but also its variation.
- connection means each of which comprises them in general, a first part along which pass through information (electronic signals to low power level) exploitable by the control unit, a second part along which circulate signals at an energy level called "industrial control power" significantly higher than the low level mentioned above, but generally lower than the energy level required by the power, these signals being exploitable (in transmission or in reception) by said organs, and means of interfacing and adaptation to correspond to signals of informational type and signals at the level of. pxi. industrial control service.
- the aforementioned link part in which the information circulates is generally a collective line for the successive circulation of this informa on (called bus in known devices) on which the interfacing and adaptation means are connected.
- each item of information circulating on this collective line must be identified by the control unit or by the member as coming from such or such member or intended for such particular member.
- the information is coded, that is to say that it includes a datum and an address and the interfacing means include electronic circuits capable of recognizing the addresses, either to derive an output datum specific to an address, or to introduce input data to the address interrogated by the control unit.
- Said interfacing and / or adaptation means are carried by Input / Output cards in which the address is a code depending on the geographic position of each card and the geographic position on the map of connection terminals of the organs to which it is linked.
- the central unit can only recognize the organ by the coded geographical position of its terminals for connection to the map.
- the present invention intends to remedy these drawbacks by proposing a connection technology which allows great freedom in the design, construction, maintenance and modifications of an industrial installation controlled by a programmable control unit.
- a programmable installation control unit which comprises:
- the subject of the invention is a device for modular connection of any one of the abovementioned members to said collective line consisting of: - a support comprising means for its installation on said collective line,
- a unitary module connected to said member, containing at least the aforementioned adaptation means, and reported on said suppo rt, - an encoding device making it possible to assign to the aforementioned electronic means contained in said support or in said module, among a plurality of possible addresses, the coded address by which the member in question is identified in the program of the programmable control unit.
- at least the connection between the adaptation module and said support is made by disconnectable plug-in.
- the said encoding device comprises means cooperating with the internal circuits of the aforementioned electronic means and display means of an alphanumeric transcription of the code produced, an automatic and permanent correspondence being carried out between these means ,,, in the encoding device itself, so that, from the design stage of the installation, then at the The programming of the programmable control unit and up to the stage of its operation, therefore, of its maintenance, the aforementioned alphanumeric transcription constitutes the sole benchmark of the organ arbitrarily chosen at the time of the design of the installation.
- the invention consisting of the combination of these electronic means, adaptation and coding-tracking can be carried out in several different ways depending on the place in the support or in the module, in which these means are installed.
- the aforementioned suppor contains said electronic means, the encoding device being carried by said support so that the aforementioned display means remain visible from the outside of the suppo rt.
- the aforementioned module contains said electronic means, the encoding device being carried by said module so that the aforementioned display means remain visible from the outside of the module when it is connected to the support.
- the coded information circulating on the aforementioned collective line can be of two main distinct types: either they are constituted by the instantaneous state of n parallel conductors which constitute the Line above collective circulation, in which case they can be used directly by said electronic means encoded "in parallel”, or they are constituted by signals circulating on a single Line (electrical or optical) which should be converted into an instantaneous state of voltage of _n conductors.
- the electrical means contain an electronic circuit for transforming coded information of the serial type on the collective line into coded information of parallel type in order to make them usable by said electronic means encoded in parallel.
- This electronic circuit can be, whatever
- the previously mentioned embodiment is either contained in said support or is contained in said module, the difference being that the number of withdrawable connections between module and support is significantly greater when the electronic circuit is placed in the support.
- the module is an output module in which the adaptation means are constituted by a switch of a supply line of a signal generator in the said transmission line, said mentation line being connected to a source of electrical energy to a new industrial control level by means of the connection of said module to said support.
- the signal generator is constituted by the switch itself, said supply line and the above transmission line being fused.
- the invention also applies to the case where the signal generator is constituted by a pneumatic pneumatic valve, the supply line being constituted by the electric excitation circuit of the solenoid valve, the transmission line. said ion being constituted by a pneumatic conduit connecting the member to a pressure source by means of said solenoid valve. It will then be advantageous for said solenoid valve to be carried by said module.
- the signal generator consists of an opto-electric coupler, said supply line being constituted by an electrical circuit for excitation of said coupler.
- Said transmission line being constituted by an optical fiber connecting the member to said coup ⁇ their, the coupler can advantageously be carried by said module.
- the module is an input module in which the adaptation means are constituted by a reader of said signal .
- the organ is a contact sensor and the signal it emits, an electric current in a line closed by said sensor and connected to a source of electrical energy at an industrial control level, by means of the connection of said module to said support.
- the member can be a three-wire detector supplied with electrical energy at an industrial control level by a supply line connected to an energy source by means of the connection of the module or support.
- the above-mentioned member is a control bypass of a pressure conduit, the signal being a positive or negative pressure signal, the adaptation means comprising an electrical circuit, one element of which is controlled by the pressure prevailing in the above-mentioned conduit, closed on an energy source by connection of the module to the support.
- the above-mentioned member is an optical sensor, which is connected by a first optical fiber to an opto-electric coupler that forms a signal reader, and which is supplied with optical energy by a second optical fiber originating from 'an electro-optical coupler, the excitation of which is ensured by an electric line closed on an energy source at a suitable level, by the connection of the module to the support.
- the aforementioned support can be constituted by a box inside which the means are provided for deriving the above mentioned collective line and which comprises multiple connection means for receiving a plurality of modules parallel to each other.
- the multiple connection means can be distributed on a laying plane, or can be constituted by a plurality of bases which can be combined by juxtaposition on either side of a junction box.
- the above-mentioned collective line is constituted by a cable forming a flexible bus running along the installation so that the boxes are located near the aforementioned organs
- applications for small installations in particular, where the module associated with each member can be directly installed on a communication card of the central unit itself, and this, in an easily withdrawable manner.
- the module can be directly as.socié to the body and held in a bypass Boitie collective cable using a c * reliable Vietnamese Vietnamese Vietnamese supra, etc.
- FIG. 1 is a schematic illustration of the prior art
- FIG. 2 schematically illustrates the general provisions of the invention
- FIG. 3 wants to illustrate, by a simplified and partial diagram of an industrial installation applying the invention, the advantage of the location-encoding arrangements illustrated by a first embodiment
- FIG. 6 and 7 are the illustration outside and in terms of a second locating-encoding means according
- FIGS. 8A, 8B and 9 illustrate schematically the possible distribution of the various logic and adaptation circuits between the module and the support of the invention.
- FIGS. 10A to 10C are diagrams similar to those in 8A, 8B and 9 above integrating an electronic circuit for transforming serial information signals into parallel signals;
- FIG. 14 - Figures 14, 15, 16, 17A and 17B show diagrams of input adaptation modules intended to be connected to signal emitting members;
- FIG. 18 and 19 illustrate two variants of an embodiment of a support housing a plurality of modules;
- - Figure 20 illustrates another embodiment of the support assembly and plurality of modules
- - Figure 21 is a sectional view of an assembly according to the invention provided with a protective cover
- FIG. 22 is another embodiment of a housing-connection module assembly according to the invention.
- FIG. 23 and 24 are two schematic views of two other types of connection of a module with the information circulation bus;
- FIG. 25 is a schematic illustration of a particular module by which two organs are connected to the control unit and are interconnected. 5
- the control of associated preactuators " 1 power devices, based on the information supplied by sensors or detectors.
- the central unit communicates with the outside by means of input / output circuits connected to the bus itself connected to the control unit.
- FIG. 1 shows the schematic illustration of a known arrangement in which the input / output circuits are formed on a plurality of printed circuit boards housed in a box 1, connected to the aforementioned bus 2 and having terminal blocks 3 intended to provide a disconnectable link between connection pads which 20 each card has and
- Each of these organs 5a _... 5ç_ is assigned, by construction, one or more connection terminals carried by the terminal block 3 itself identified by the card carrying it.
- the connection instructions are contained in a document ( machine file) which establishes the correspondence of the terminals and the members to be connected to it by means of secondary terminal blocks 3a_, 3b_.
- FIG. 1 also illustrates a partial solution to the problem of wiring an installation to the programmable automaton, which is currently being developed by means of decentralized input / output cards, that is to say extracted from the housing 1 for be brought together, as shown in the case 6, of the members 7a_, 7b_ to which they must be connected.
- the connection to the central unit of such cards is carried out by an appropriate extension 8 of the communication bus coming directly from the processor by means of connection and adaptation means produced in the housing 1.
- FIG. 2 is a very schematic view of the connection device according to the invention showing the general combination of means by which the connection of each o: rgane to the control unit is made rational and the manufacture i cai : i have standardized components and divided into a gam evol utiv.e ⁇ pou.vant respond precisely to an increase in: needs nrs * rré either the evolution of technology, or an improvement of facilities.
- Line can be constituted in several different ways depending on the nature of the optical or other electronic signals and the way in which the code is produced.
- a multiple conductor comprising a plurality of wires whose voltage state of some of them at a given instant constitutes, in combination, an address, while the voltage state of one at least of the son remaining at the same instant or at a determined instant with respect to the above-mentioned point, constitutes the data item of the information associated with said address.
- a collective line for circulating information can be constituted by a pair of twisted conductors in which the flow of information is in series made up of successive pulses whose spacing and duration constitute a certain coded language processed. according to a known procedure. It can also be an optical fiber (or a pair of optical fibers ) along which, like the above twisted pair, optical pulses propagate.
- Each member 11, 12 is connected to this line 10 by a support 13 or 14 comprising means for its installation.
- these means having the function of making a connection capable of deriving The information circulating in The Line towards electronic means capable of recognizing among these that which is intended for the organ, that either to transmit data to it or to interrogate and receive data from it, and by a module 15, 16 which cooperates with said suppo 13 or 14- On which it can be reported, or once for all :, either in a disconnectable manner.
- This module comprises at least the adaptation means, known in themselves which make it possible to match a datum belonging to the information to a physical quantity usable by the organ (electric current at a voltage level higher than that of the datum, optical flux, pressure by means of establishing a connection to a pressure source, etc.) or of transforming a physical quantity into a datum exploitable by the control unit (transformation of an electrical signal into a level signal i nféri eur .co pat i bl e with interface electronics, transformation of an optical or pneumatic, or hydraulic signal into an electronic signal, processing of a temperature, a variation in flux, etc. (also into an electronic signal).
- This module can also contain all or part of the aforementioned electronic means.
- module 15 we wanted to represent a module which only includes the part of the electronic means capable of processing only The data intended for the organ or emitted by the organ through said adaptation means, the derivation of this data among all those which circulate in the form of information coded in line 10 having been produced by the other part of the electronic means integrated in the support 13 and "in contact with all this information.
- module 16 the latter also contains the electronic means making it possible to select, by the coded address, the data exchanged.
- the support 14 only incorporates connection means capable of deriving all the information circulating in the Line 10 or, associated with these means, electronic means for processing the information in itself to essentially change their coding procedure ( transform, for example, a serial transmission along a twisted pair or optical fibers into a so-called "parallel" transmission on a plurality of conductors).
- the third general means of the invention is an encoding device 17,18 which makes it possible to give the above-mentioned electronic means an address which conforms to the address by which the unit Centrale knows the organ in question as it has been identified and named in the program of this control unit.
- This encoding device 17, 18 consists of means for creating, in an electronic circuit, known per se, of address recognition, a set value consis ⁇ tant to carry, in a predetermined combination representing L ' address, a number of electrical conductors, among a pre-existing plurality of these, to a potential by making the appropriate contacts between these conductors and a voltage source.
- Figures 4 to 7B diagrammatically illustrate such a device and its cooperation with the electronic recognition circuit.
- the encoding device, such as 17, will cooperate with the housing 13 when the corresponding electronic circuit is integrated therein or such as 18, with the module 16, when the latter comprises said electronic circuit. It can be seen, with regard to this FIG.
- This arrangement allows, for a component manufacturer, to envisage a range of modules adapted to each of the types of sensors, detectors or preactuators existing on the market or to come. Furthermore, it will also be possible to rationalize the supplies that the actuators or certain detectors require at the industrial control power level, by supplying these supplies to each of the above collective supports, either separately or, in certain cases, along the collective line in a common grommet adequately protected against any disturbance coming from the outside and internally comprising an insulation of the collective line with respect to the supply line.
- the invention by a particular and preferred embodiment of the above-mentioned encoding device, has a particularly advantageous influence over the entire life of the installation, from its conception, passing by its construction, the programming of the central unit, its maintenance and its subsequent modifications.
- FIG. 3 shows a schematic drawing not only a particular embodiment of the available encoding ⁇ operative part, but also the consequences of its use for any installation.
- This figure shows in 20 a por ⁇ tion of any machine whose frame 21 carries a power device 22 such as a motor whose preactuator 23 can be a contactor. The latter is connected by a cable 24 to an adaptation module 25 which is itself plugged into a support 26.
- the support 26 cooperates as described above with a bus line 27 connected to a central control unit 28.
- At 29 we have wanted to represent a programming console of the central unit, on the screen from which appears The program phase: relating to contactor 23.
- the module 25 is, in this figure, shown on a larger scale, to reveal an encoding device 30- pluggable into the module 25 by pins 31 cooperating with female terminals 32 carried by the module.
- the terminals constitute connection elements of the above-mentioned plurality of conducting wires of the electronic recognition circuit, and the pins 31 ensure connection of some of these with a source of potential.
- Inside the device 30 there is suitable electronics allowing the distribution on each of the pins concerned of the potential which could also come from a particular pin 31 When it is plugged into a corresponding terminal of the module. This electronics can be programmable to establish such and such a particular stri bution among the plurality of possible distributions.
- the device 30 has on its face visible from outside the module 25 when it is inserted therein, a mark 5A constituting the translation into plain language, for example alphanumeric, of the code produced by programming.
- This mark can appear on a visualization panel comprising liquid crystals connected to an electronic circuit ensuring automatic correspondence, and Maintaining this correspondence and this display, between the programmed code and the mark.
- a mechanical marking of this outer face which constitutes- confirms the programmed code and locks it when the marked mark corresponds to the programmed code.
- the invention allows a significant simplifica ⁇ tion of the construction and maintenance of the machine. Indeed, from its conception, the creator decides to name each of the preactors and detectors he needs by an alphanumeric code, for example hexadecimal, which allows him to have 256 different markers either for the preactuators, or for the detectors, the distinction between information sending bodies and data receiving bodies being carried out in the general mode of information exchange. He thus names 5A Contactor 23.
- the same organs are identified by the same markings (or their equivalent in machine language) in the program (see 5A on the screen of console 29 displaying the program phase corresponding to the contactor 23).
- the construction of the machine having been completed from the structural point of view, the control unit is linked to the various members.
- the cableur having set up the collective line 27 as well as the supports 26 in the vicinity of the members to be connected, connects by the cable 24 the contactor 23 to a module 25 of the type corresponding to the nature of the contactor and either program by means of 'a portable console, an encoding-marking device 30 by displaying the mark 5A, or choose a device already prepared and bearing this mark, then plug it into the module 25.
- This electronic circuit 40 receives the information coded on a plurality of conductors 41 as regards the addresses and is connected to an identical plural tee of conductors 43 encoded by an encoding-marking device 44.
- the device 40 transmits a write authorization signal in the direction of an electronic circuit 45 also known, by means of which the data which accompanies the address, present on the conductor 42 , is transformed into a signal transmitted to the adaptation means described with reference to FIGS. 11A, 118, 12 and 13 and maintained as long as the datum, accompanying the address at each of its passages, has not changed.
- FIGS. 4 and 5 there is shown in the same schematic manner an address comparison device 47 which ag t out, when the address identity is found, on a device. tf read authorization 48 which, activated, allows the transmission of the signal present on the ' line 46 as it is emitted by the adaptation means described with reference to FIGS. 14 to 17B, in the direction of the collective circulation line of the coded information and thereby towards the control unit where it is operated and stored.
- tf read authorization 48 which, activated, allows the transmission of the signal present on the ' line 46 as it is emitted by the adaptation means described with reference to FIGS. 14 to 17B, in the direction of the collective circulation line of the coded information and thereby towards the control unit where it is operated and stored.
- FIGS. 4 and 5 are different from reality, the electronic devices put. implemented including lines not shown necessary for the implementation of a serial data exchange protocol.
- FIGS. 6 and 7 a device for locating and encoding which can be applied in the diagrams of FIGS. 4 and
- This device is here constituted by two coding wheels 51, 52 mounted for rotation inside. either of the aforesaid support, or of the module, according to the planting of the electronic recognition circuit, and cooperating with a support panel 53 of printed circuit (see in FIG. 7) SUF which is engraved The plurality of conductors 43 and which supports also Electronics 40 or 47.
- FIG. 7 which is a schematic sectional view of the preferred arrangement of the coding wheels 51, 52, shows that the latter are equipped with a radial bar 54 for the wheel 51 and 55 for the wheel 52 which elastically rubs against one face of the printed circuit 53.
- the printed circuit comprises two series of four concentric zones, conductive by sector only, separated by a common circular tension 56, formed between the two above-mentioned series.
- the conductive zones are connected through the card 53 for supporting the printed circuit, to output conductors 57, which may constitute the origin of the plurality of conductors 4
- each radial bar communicates to each conductive area that it "bars", the potential of the conductor 56 and consequently this potential to each of the conductors 57. Connected to an overlapped conductive area by the bar. In turning each wheel, the bar is moved by an angular sector such that the arrangement of the conductive zones and their number has changed. The above potential is then communicated to other wires and in another arrangement: the code of the connection device has been changed.
- the code of the connection device has been changed.
- the arrangement of the conductive zones can, for each zone, be presented according to a known diagram called GRAY code.
- FIGS. 8A to 10C illustrate several variants on this subject.
- a support 60 comprising an electronics 61 connected to the collective line 10.
- the support 60 carries the encoding device 62 and manual actuation means 63 which act on the electronic circuits.
- the support carries two types of connection pins, one symbolized at 64 for the exchange with the electronic signal module 65, and the other symbolized at 66 for supplying these adaptation means, see organs. connected to it, by a source of energy electric power of sufficient power to control said components or supply them properly.
- the module 65 no longer comprises any more than adaptation means which are connected to the type of pins 64 for the exchange of data and the power supply at low power level of the electronics of adapt when it exists, and on the type of pin 66 for power supplies at the level of industrial control power.
- the module 65 which is connected by a single cable 67 to the body, finally presents an indicator light 68 and possibly a fuse 69 which associated with the manual control member 63, the marking-encoding 62, constitute the Appelrmachi dialogue bodies do not decentralized near the organ.
- FIG. 8B is an alternative embodiment of FIG. 8A in which the same elements bear the same references, only their relative forms having changed. It will therefore be noted that the electronics 61 is still in the support, but in a wing of the latter.
- the support 70 contains only one device 71 making it possible to derive each of the conductors of the collective line for the circulation of information coded on a series of terminals 72. It also carries the terminals 73 for bypassing an industrial control power supply line which is brought to said support, either along said collective line, or separately.
- the module 74 comprises all of the electronic means 75 cooperating with the manual actuation means 76, and the encoding device 77, and the adaptation means 78, respectively connected to the terminals 72 and 7 above by plugging the module onto the support, while the adaptation means are connected to the member by a cable 79.
- the other elements bear on this figure the same ref-rerrces as those of Figure 8B.
- FIG. 10B is a diagrammatic representation of a first alternative embodiment of FIG. 9 in which the electronic circuit 91 of "series-parallel" transformation, similar to circuit 81 of the previous figure, is incorporated into the support 70,
- the module 74 containing the rest of the electronic stage 75 and the ad tatio'n means 78, being connected at the output of this circuit 91 and to the terminals of type 73.
- FIG. 10C illustrates a second variant of FIG. 9.
- the circuit 92 of transformation "series-by-Lé is in this case integrated into the module 74, the connection between support and module then being reduced, at the signal level, at a few terminals 93 for the passage of signals and of the electron supply than from the module at low power level.
- Figure 11A shows that the adaptation means here consist of a switch 100 which can be static (electronic) or dynamic (electromechanical) of a supply line 101 of a winding 102 of the preactor which can be an LVE electrova, or a contactor whose winding 102 is that of its magnetic operating element. On this Line, the presence of a witness fuse 103 and a warning light 104 is distinguished.
- the switch 100 is controlled on closing and / or opening by a relay 105 excited by the output of electronic means (such as those shown in Figure 4). It should be noted that all the switching means shown diagrammatically can be static or dynamic.
- the reference 106 symbolizes the connection terminals by which the line 101 is connected to a voltage source, when the module is plugged into the support.
- the output module which is thus represented comprises a more complex electronics which makes it possible to transmit to the programmable unit a signal or information in return relating to the execution of the order sent and / or to the state circuits-, controlled.
- the output module which is thus represented comprises a more complex electronics which makes it possible to transmit to the programmable unit a signal or information in return relating to the execution of the order sent and / or to the state circuits-, controlled.
- an opto-coupled transistor 107 with a derivation of the line 101 at the terminals of the switch 100 which allows a signal to be emitted when the switch is open, indicating that the controlled circuit does not have any abnormalities or breaks.
- FIG. 12 schematically illustrates another output module in which a switch 110 controlled by the output of the electronic circuits can open or close the excitation circuit 111 of a m cro-electrova Lve 112 allowing to put a pneumatic conduit 113 with * a pressure source not shown but ending at the Leetrovanne 112 by a conduit 114. It is thus possible to generate a pneumatic control signal capable of controlling a receiving member of the distri butor or microverin type.
- FIG. 13 finally illustrates an output module in which the adaptation means consist of a switch 120 of a line 121 supplying a light-emitting diode 122 the light of which can be collected by an optical fiber 123 and led to an organ of the opto-elect roni coupler type or simply at the other end of the fiber 123 serving as an indicator.
- the adaptation means consist of a switch 120 of a line 121 supplying a light-emitting diode 122 the light of which can be collected by an optical fiber 123 and led to an organ of the opto-elect roni coupler type or simply at the other end of the fiber 123 serving as an indicator.
- FIGS. 14, 15, 16, 17A and 17B relate to input modules, that is to say modules in which the adaptation means are able to collect a physical quantity emitted by a sensor or a detector and transform this physical quantity into an electronic signal which the abovementioned electronic means can introduce on the collective line for circulation of coded information, in the direction of the control unit.
- these bodies often need a permanent supply of energy at a sufficient power level ( "this is the case of optical sensors ( fig. 16) or 3-wire detectors (FIG. 15. or that. adapters themselves need this level of power to operate The above transformation.
- connection terminals 136 allowing the connection of said members or means of adaptat on to a source of electrical energy at the same time as the connection of the module to the support.
- the member shown, is a contact sensor 130a_ or a proximity detector 130] 3 of two wires, known in themselves, which constitute the switches external to the module of a line 131 of excitation d '' a light-emitting diode 132 opto-coupled to a transistor
- An LED 134 indicates the status of the sensor.
- the member 140 is a 3-wire detector known in itself, the supply line 141 of which is integrated in a circuit allowing, by a diode 142 and a transistor 143, to detect a variation in the flux of power supply generated by a variation of the electromagnetic field at the level of the detector and of emitting an electronic signal corresponding to this detection.
- the senor is optical and constituted by an arrangement, not shown, ensuring the transmission of a light flux between two optical fibers 150, 151 in which an opaque body can be inserted, thus cutting off the optical communication. previously established between these two ends.
- the adaptation module comprises a light-emitting diode 152, constantly excited by a supply line 153, closed on a power source by the terminals 136, emitting a light flux in the fiber 150 which is located in its proximity, and by a tran ⁇ sistor 154 opto-coupled to the end 151b ⁇ of the other fiber to receive light in return and detect the interruptio of its passage.
- FIG. 17A is an input module in which the adaptation means include a pressure "sensor" (hydraulic or pneumatic, positive or negative) 160, connected by a conduit 161 to a pipe to be checked and capable of constituting the mobile element of a switch 162 of an excitation line 163 of an opto-coupl diode 164 to a transistor 165 emitting an electronic signal when the line 163 is closed.
- the movable element 162 can be associated with a device 166 (calibrated spring for example) for adjusting its triggering threshold making it possible to display on the module an adjustable reference value and displayed at 167 on an external module passage.
- FIG. 17B finally, illustrates schematically an alternative embodiment of the adaptation means of FIG. 17A in which the "pressure sensor" 160 ′ can be of the pi ezo-electric type or with a strain gauge.
- This sensor is supplied (Line 161 ') by electrical energy at low power level and its return signal (or its variation) is exploited by an electronic circuit with threshold crossing 162' which will emit by line 163 '' an electronic signal indicating that the set threshold is exceeded.
- the determination of the threshold can be carried out, adjusted and displayed in various ways by means of a device 166 ′, either manually operated, or by separate programming or remote programming by the control unit eL itself. We can, without departing from the scope of the invention ,. provide other means of adaptation in the above module.
- FIG. 18 illustrate arrangements in which the support of the connection device according to the invention constitutes a planting box for a plurality of modules.
- the aforementioned collective line for the circulation of coded information is constituted by a multiple conductor in sheet 170 brought into the base 171 of a housing equipped with means allowing the spreading of these conductors in a central area 171a of this base.
- a supply line 173 has been placed in electrical energy of industrial control power.
- a cover 174 is adapted to cover the base 171 and to be fixed there. This cover has, on its side not visible in the figure, self-stripping electrical connection means, for example, which make it possible to create a bypass of the collective line and of the supply line.
- the cover 174 is equipped with a printed circuit making it possible to start again and to multiply the connections on a front surface 175 which has, in the case of the figure, eight identical zones 175a forming a laying plane for eight modules, each of them being in the configuration 74 shown in FIG. 9.
- the base 171 of the housing thus formed will present means for its fixing to a fixed structure, not shown, which may be an element of the frame of the installation, The cover 174 being screwed onto this base.
- We will set screws such as 176 and corresponding threaded holes 177 in the vicinity of the central area of the base and lid for const-ituer force multipliers elements to help The established ⁇ ment insulation displacement connections aforesaid .
- FIG. 19 illustrates a variant of FIG. 18 in which the collective line for the circulation of coded information is constituted by a pair of optical fibers 180 leading to a coupler 181 for converting serial optical signals leading to electronic circuits, into electronic signals of the same type, and serial electrical signals from said circuits as optical signals s-é. ⁇ " e- ..
- An identical coupler 182 ensures this same double CO ⁇ e-rs; t ⁇ rr for the pair of optical fibers 180 which comes out of the " case.
- FIG. 20 illustrates by an external view the installation of eight modules on a support which has
- FIG. 21 shows by a sectional diagram of an arrangement identical to that of FIGS. 18 or 19, which can be put in place on the plurality of modules 74 plugged into the housing, a protective cover 193 which has a face frontal 194 transparent through which one can observe the state of the LED 68 and the fuse (if the module is an output module) and a face 195 perpendicular to this front face having a deformable section 196 allowing The actuation of the forcing or manual control means 63.
- the cover 193 has means 197 for sealing the modules 74 relative to the outside atmosphere.
- FIG. 22 a variant of embodiment is shown in the grouped planting of modules on a support.
- the support includes a housing 200 inside which the above described branches are operated.
- the housing 200 then has on each of its two lateral faces 201, 202, connection terminals for bases 203 which themselves are connectable to each other and to the housing along a connection plane parallel to the abovementioned faces and which have a branch leading to a face 204 perpendicular to the preceding ones on which can be implanted each module 205.
- Each base 203 is mechanically locked on the previous one or on the housing by fixing elements (screws, clips ...) not shown and each module, as moreover in the case of FIGS.
- connection of the module 205 to the member which corresponds to it is withdrawable and is provided by the intermediary of the base 203 having for this purpose two opposite faces 207 which can be used as desired, perpendicular to the three other aforementioned connection faces.
- the end of the cable 208, coming from the member and connected to said base by its face 257, may also include a fixing screw 209.
- connection face 204 of the module to the base reveals two types of connection terminals, namely terminals 204a for supplying control power and terminals 204b for exchanging of coded information of the serial type and the power supply at low power level.
- the box 200 mainly contains only means for deriving the Circulation lines ( twisted pair ) and supply, The interface electronics being entirely contained in each module 205. It is however possible to incorporate electronic means into this box of reg / generation of signals, known in themselves.
- This box can 'é-ga e- ⁇ rent contain the electronic transformation circuit, riie * parallel to the transfer protocol of the framed information. In this case, the terminals of type 204b will be greater in number, the exchange of information with the module being done in parallel mode.
- the base 203 contain only members ensuring electrical continuity between the various connection faces without any incorporated processing electronics. It is however possible to imagine, within the framework of the invention, that a secondary housing could be connected to a base and include serial / parallel transformation electronics or vice versa, allowing the start of a new branch of cable-bus to serve a subset of the installation. It can be seen that the design, according to FIG. 22, makes it possible to easily obtain a large number of possible configurations of the whole line for circulation of coded information (bus cable) and line • of power supply at the level of power for controlling preactuators and supplying detectors, which can be combined with installation boxes according to FIGS. 18, 19 and 20.
- each of these implantations of modules on a common housing is in the form of a volume substantially in the shape of a pedicle, one front face of which (in the plan of each figure) includes the display of the reference carried by the rage-encoding device and the means for displaying the state of the module (by the indicator light such as that 68 in FIGS. 8A to 10O and the state of fuse 69 in the case of an output module.
- This face also includes a sign - for example an arrow 178, 198, 210 - which indicates the direction in which the information circulates in each module, thus allowing '' at a glance to distinguish an input module from an output module.
- a letter I or 0 in the vicinity of the marker can also be used for this purpose (INPUT and OUTPUT).
- Certain special modules having a function of adaptation to s * euil like those of FIGS. 17A, 17B, also include on this face a display of the threshold value which will have been predetermined (see 179, 199 in FIGS. 18 and 20). .
- Said front face therefore groups all the display or visualization elements which allow a technician, at a glance, to check the correct functioning or to locate the failures of such or such module or organ of the 'installation.
- the above-mentioned volume also includes a second functional side, perpendicular to this front face, which carries it, in an aligned manner * , all the forcing control members, therefore of manual intervention which can be accessible by an operator.
- These organs shown diagrammatically at 63 in FIGS. 8A to 10C, are constituted by rocking buttons 211 in FIGS. 18, 19, 20 and 22 with a central neutral position and automatic return to this position.
- Pressing them on one side generates the simulation of a sensor state for the central unit or the forced control of a pre-actuator, to bring it to a first state, if it is respectively input or output module, their insertion on the other side causing the simulation of another state of the sensor or the forced control of the pre-aetionnator to cause it to take the other state that it is likely to reach during normal operation.
- FIG. 21 summarizes by a cross-section diagram all the means of visual and manual dialogue that the invention allows with an operator and shows the easy access that the latter can have to these means thanks to the rationalization of Le * -ur location.
- FIG. 23 schematically shows that the invention-oxr pcerrmet a direct and rational implantation of the modules-s: Z20 at the output of a programmable controller 221.
- the latter is. to do this, equipped with data exchange cards 222 ensuring the connection of the modules with the PLC bus, comprising electronic circuits in greater or lesser number, depending on the electronics incorporated in each module, and constituting the holding armature for a connection support 223 receiving exchangeably each module 220.
- This arrangement is advantageous for small installations.
- each module meets the general definition of the invention, namely that it includes the means of adaptation specific to the member that it intends to connect and that it cooperates either directly or by integrated electronic circuits. in the support with a locating-encoding device as described above.
- FIG. 23 schematically shows that the invention-oxr pcerrmet a direct and rational implantation of the modules-s: Z20 at the output of a programmable controller 221.
- the latter is. to do this, equipped with data exchange cards 222
- a module according to the invention such as that shown 230, can be installed on a member 231 which is associated with it and connected by a cable 232 to a connection box 233 ensuring so plement the derivation and the multiplication of the derivations of the collective circulation line and of the control power supply line, both enclosed in a cable guide 234.
- the connection of the cable at the level of the housing can be carried out by indifferently in any of the zones 233a of the housing, the address recognition being carried out at the level of the module 23 ⁇ .
- Figure 25 illustrates the realization of a particular module 240, installed on a box 241 forming its support, by which communication is possible between the central control unit and a solenoid valve 242, between the central unit and a sensor 243 but also a coupling is ensured locally between the input information delivered by the sensor 243 and the output information intended for the solenoid valve 242.
- the program of the central unit is such as The control of the output of the cylinder rod 250 should only be used if the cylinder rod 251 is retracted to avoid telescoping.
- a connection device ayan an adaptation function such as that illustrated in FIG.
- the module 240 will also have these two functions to which will be added an internal coupling of the supply line of the solenoid valve with that of the sensor, so that the sensor, in series on the supply of the solenoid valve , closes this line by being actuated by the rod of the jack 251 in the retracted position.
- the central unit controls the excitation of the solenoid valve before the rod of the jack 251 is retracted, this command will only be effective when this rod has actuated the sensor 243.
- the invention finds an interesting application in the field of automation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Programmable Controllers (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8515818A FR2589259B1 (fr) | 1985-10-24 | 1985-10-24 | Dispositif de raccordement modulaire des organes d'une installation industrielle a une unite de commande programmable |
FR8515818 | 1985-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0246259A1 true EP0246259A1 (fr) | 1987-11-25 |
Family
ID=9324171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860906347 Withdrawn EP0246259A1 (fr) | 1985-10-24 | 1986-10-20 | Dispositif de raccordement modulaire des organes d'une installation industrielle a une unite de commande programmable |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0246259A1 (fr) |
FR (1) | FR2589259B1 (fr) |
WO (1) | WO1987002795A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2638862B1 (fr) * | 1988-11-04 | 1990-12-14 | Merlin Gerin | Organe de commande, manuel ou automatique, par exemple a bouton-poussoir, destine a etre connecte a un reseau de transmission de donnees |
FI100139B (fi) * | 1988-11-04 | 1997-09-30 | Schneider Electric Sa | Rakennuksen teknisten toimintojen valvontalaitteisto |
EP0434986A3 (en) * | 1989-12-22 | 1993-06-16 | Siemens Aktiengesellschaft | Method for putting into operation a module connected to an electronic control system |
GB9305931D0 (en) * | 1993-03-22 | 1993-05-12 | Noakes Leslie G | Fastrack industrial electric motorcontrol gear system |
FR2718543B1 (fr) * | 1994-04-08 | 1996-06-21 | Robot Consult Sa | Système et dispositif de pré-automatisation des installations d'un bâtiment. |
GB0110948D0 (en) * | 2001-05-04 | 2001-06-27 | Tyco Electronics Amp Gmbh | Bus controlled relays |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5428984A (en) * | 1977-08-05 | 1979-03-03 | Toyoda Mach Works Ltd | Mimic power unit of sequence controller |
US4413319A (en) * | 1981-03-09 | 1983-11-01 | Allen-Bradley Company | Programmable controller for executing block transfer with remote I/O interface racks |
DE3125722A1 (de) * | 1981-06-30 | 1983-01-13 | Siemens AG, 1000 Berlin und 8000 München | Steuerungssystem, insbesondere fuer automatische fertigungsanlagen |
-
1985
- 1985-10-24 FR FR8515818A patent/FR2589259B1/fr not_active Expired
-
1986
- 1986-10-20 EP EP19860906347 patent/EP0246259A1/fr not_active Withdrawn
- 1986-10-20 WO PCT/FR1986/000361 patent/WO1987002795A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8702795A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1987002795A1 (fr) | 1987-05-07 |
FR2589259B1 (fr) | 1988-08-26 |
FR2589259A1 (fr) | 1987-04-30 |
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Inventor name: COULLIAIS, HERVE Inventor name: PERRIN, JACQUES Inventor name: COLLOT, RENE Inventor name: SELOSSE, JACQUES Inventor name: MERLAUD, CHRISTIAN |