Electricity: electrical systems and devices – Miscellaneous
Patent
1984-12-06
1987-09-08
Kucia, R. R.
Electricity: electrical systems and devices
Miscellaneous
361394, 361407, 361415, H05K 114
Patent
active
046928421
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an input/output device for an apparatus controlling industrial automatic equipment, such as a programmable auto-control or a range of such devices. The present invention also relates to a method of producing a terminal-box for such devices.
Programmable auto-controls covered by the invention comprise, in practice, a central unit and cards which have, on one edge, inner contacts for connecting them to a bus, such as a printed circuit itself connected to the central unit, and, on another edge, outer contacts intended for connection to the installation governed by the auto-control. The input/output cards contain electronic channels capable of transmitting and processing signals coming from sensors and intended for the bus, where input cards are concerned, and coming from the bus and intended for actuators, where output cards are concerned.
Each card, designated as an "input/output card" below, forms part of an input/output device also possessing a terminal-box, the purpose of which is to associate with each outer contact of the card a connecting terminal for the conductors extending to the sensors or the actuators respectively.
Input circuits, each comprising in series a voltage source, a sensor switch and an electronic detection channel carried by the input card, are wired to each input device. Output circuits, each comprising in series a switch carried by the card, the actuator to be controlled and a voltage source, are wired to each output device.
In some uses, it is desirable for the circuits formed in this way to be isolated from one another. In this case, the various channels must not have any common point on the card. In other uses, it is convenient to use a card on which there is a connection giving a reference potential common to all the channels.
However, the disadvantage of this is that each type of input/output card must be produced in three forms, depending on whether the channels are isolated, the common potential is positive or the common potential is negative. In spite of this, the flexibility of use is not as it should be, since, unless production is even more varied, there is no possibility of isolating some channels while at the same time ensuring that others carried by the same card have a common reference potential. Moreover, these connections provided on the card between each channel and a common potential point are troublesome because they take up precious space on the card and often make it necessary to take special precautions to have them intersect other conductive lines of the card.
However, other problems arise when the input/output circuits are to be interconnected. In fact, it is also necessary to provide between the sensors or actuators and the electrical source or sources one or more auxiliary terminal-boxes which are costly and bulky and which make the installation more complicated.
SUMMARY OF THE INVENTION
The general object of the invention is to simplify the input/output devices of programmable auto-controls or similar apparatuses for controlling industrial robots and to make them less costly and easier to assemble, wire up and use. The object of the invention is, in particular, to reduce the cost and bulk associated with the interconnections between the input/output circuits in programmable auto-controls or the like. The invention is thus aimed at an input/output device connectable by means of a bus to a central unit of an apparatus for controlling industrial automatic equipment, such as a programmable auto-control. The device comprises at least one card supporting a certain number of electronic channels processing and transmitting signals exchanged between the bus and equipment incorporating sensors, sending input signals, or actuators, to which output control signals are delivered. Each card being connected to the bus and to a terminal-box which comprises a series of inner terminals intended to be connected to the card and a series of outer terminals for connection to the equipment. In operation, each elect
REFERENCES:
patent: 3372308 (1968-03-01), Noschese et al.
patent: 3495134 (1970-02-01), Collins et al.
patent: 3609462 (1971-09-01), De Barros
patent: 3794954 (1974-02-01), Reimer
patent: 4151580 (1979-04-01), Struger et al.
patent: 4179172 (1979-12-01), Godsey et al.
patent: 4215386 (1980-07-01), Prager et al.
patent: 4253087 (1981-02-01), Sall
patent: 4327546 (1980-12-01), Wells
patent: 4472764 (1984-09-01), Richard et al.
patent: 4490775 (1984-12-01), Quan
patent: 4510552 (1985-04-01), Kanno et al.
Allen et al., Card on Segmented Board Electronic Package, IBM Tech Disc. Bull., vol. 19, #1, Jun. 1976, pp. 51 & 52.
Kehley et al., Side Entry Cable System, IBM Tech. Disc. Bull., vol. 20, #1, Jun. 1977, pp. 86 & 87.
Barillier Gilbert
Joly Jean
Leblanc Bernard
Neyroud Jean
Oehlert Yves
Kucia R. R.
La Telemecanique Electrique
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