FR2820899A1 - Current line pole mechanical switch control unit having connector section with electromagnet command and additional section with engagement units providing pole state and mechanical button push state. - Google Patents

Abstract

The switching motor has a connector section (11) with an electromagnet command (16) and switch (18) with a manual button (17) and a protection part (12) controlling current lines (20) with an additional section (B). The control unit and electromagnet have engagement units (30,40) providing pole state and the switch state of the mechanical button. The engagement units have contact sections (31,41) providing auxiliary contact information.

Description

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The present invention relates to a motor starter device comprising power current lines with separable contacts, as well as a contactor part and a protection part provided respectively with a control electromagnet and at least one trip member. intended to control poles of current lines via a mechanical control device, and a control button capable of opening the poles of current lines.

At least one auxiliary contact additive is generally added to the motor starter device. Such an additive can be coupled to the device, therefore considered as the main device, so that the auxiliary contacts are actuated as a function of the movement of a driving part of the main device. The additive is connected to an automation device and is dedicated to a specific function, for example in order to signal the state of the power poles of the main device or the triggered state of the main device.

The object of the invention is to make a motor starter device capable of interacting with an additive to several sets of auxiliary contacts for transmitting to this additive information relating to the triggering caused by the triggering member or relating to the position of the button. manual control, as well as in the state of the main contact poles.

According to the invention, the mechanical control device and the electromagnet are associated with two respective movable drive members, one of which is representative of the state of the poles and the other of which is representative of the triggered state of the device. or from the position of the button, the additive comprising at least two sets of separate contacts and each drive member actuating in the additive at least one set of contacts.

The description will be made below of a non-limiting embodiment of the invention, with reference to the accompanying drawings.

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 Figure 1 schematically shows a motor starter device according to the invention.

Figure 2 shows a schematic front view of the lower part of the device.

FIG. 3 illustrates the control carried out by the trigger rod with three positions.

The starter-motor device 10 represented comprises a part 11 for controlling in contactor mode, a protection part 12 and a housing 13 in which are housed, or to which the parts 11, 12 are assembled. The housing 13 is elongated, preferably in a vertical direction, and has separable contacts 14, here shown as double break contacts, for the different power current lines 15 of the device.

The contacts 14 are controlled by the contactor part 11, as a function of the supply of an electromagnet 16, or by the protection part 12, following a fault observed in the power current lines 15 by sensors not indicated, or by a manual control button 17. The sensors are connected to the protective part 12 which, in the event of a fault, controls the opening of the contacts 14 via at least one electromagnetic or electronic trip device 18. The manual control button 17 is provided on the front of the device 10 and allows manual opening of the contacts 14 and resetting the device after tripping.

A mechanical device 20 acts on the contacts 14 to cause it to open and close. The device 20 is housed in the housing 13 and includes a mechanism 21 on which the electromagnet 16 acts, and a mechanism 22 with which the button 17 and the trigger 18 cooperate and which itself cooperates with the mechanism 21. In addition, power terminals 13a, 13b are arranged at the upper part and at the lower part of the housing 13 to connect the power current lines 15 to a supply and to a load, these terminal blocks being preferably removable and attached to the housing.

The mechanism 22, housed in the housing 13, brings together the moving parts intended to control the contacts in response to a command from the button 17 or

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 of the trigger 18. The mechanism 22 also drives a moving part 40 intended to actuate first signaling contacts (auxiliary contacts). The mechanism 21 controls the contacts in response to a command from the electromagnet 16 and the latter further drives a moving part 30 intended to actuate second signaling contacts (auxiliary contacts). The parts 30.40 can be levers; here they are constituted by sliding rods housed in the housing 13.

The rod 30 is thus movable in translation from an on position to an off position and vice versa in response to the switching of the electromagnet 16. It has conformations, for example fingers 30B, 30C, making it possible to control contacts which provide signaling of the state of the contacts 14. The fingers 30B, 30C are distributed over the length of the rod 30 to actuate first contacts 31 and second contacts 32a, 32b, representative of the on or off state of the device in contactor mode. The contacts 31 are located in a communication or signaling block B removably attached to the front of the box 13 and the contacts 32a, 32b are integrated in a fixed part C of the box 13; this part C is located at the lower end of the housing. By contacts of block B, we mean mechanical contacts or electronic switches controlled by the movement of a mechanical part; block B can be connected to an automation device, in particular by a field bus connected frontally or laterally to the device by means of a connector not indicated.

The rod 40 is movable in translation to take three positions: an on position (on), a stop position (off) and a triggered position (trip), depending on the state of the mechanism 22, to respectively represent the state " device "on" ("ready"), its "off" state and its "triggered" state. The rod 40 has conformations, for example fingers 40B, 40A distributed over its length, for actuating first signaling contacts 41 located in the removable communication or signaling block B and second signaling contacts 42,43 located in a removable additive A underlying the block B. In addition, the rod 40 has at its lower end a finger 40C provided for actuating a third contact 44, the function of which is to isolate the device from its supply. Solenoid coil power leads connect to terminals

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 44A1, 44A2 (visible in FIG. 2) associated with the third contact 44 and located in part C of the housing 13.

As can be seen in FIGS. 1 and 2, the signaling contacts which have just been described extend along the housing 13 at different levels corresponding to the presence of the communication or signaling block B (level 1), of additive A (level 11) and the integrated lower part C (level)))). The contacts of A, B and C are controlled from the fingers or other drive elements by any usual mechanical transmission. The additive A can moreover be provided with a contact actuated by an additional finger of the rod 30.

FIG. 3 shows for the three on (on), off (off) and tripped (trip) positions of the device the state of the contacts 41, 42, 43 in an exemplary embodiment where the switch 41 is of the three state type . Thus, on the output lines of the switch 41, we observe respectively in the on position potentials V + and 0, in the off position 0 and 0, in the triggered position 0 and V +. Contact 42 is open in the off position and it is closed in the tripped position. Contacts 43 and 44 are closed in the on position and open in the off and tripped positions.

In a variant, the block B and the additive A can be combined in a single removable block. In another variant, the part C can be located in an additive, so that the block B, the additive A and the additive C are combined in one and the same removable additive block attached to the housing 13.

When the device is stopped (off position), the electromagnet is not supplied, the mechanism is assumed to be reset, the contacts 14 are open. The rod 40 is in its middle position (off position in Figures 2 and 3) and the rod 30 in the rest position (Figure 2), significant of the opening of the poles, so that the switch 41 is in position neutral (its first and second outputs being at 0), the contacts 42, 43, 44 are open, the contacts 31 and 32a open and the contact 32b is closed.

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To switch the device to the on state, the button 17 is placed in the on position, so that the rod 40 goes to its on position, in which the first output of the switch 41 goes to 1 (V +), then that the contact 42 remains open and that the contacts 43,44 close; the power poles 14 are then opened or closed depending on the supply of the electromagnet 16. If the coil of the electromagnet is effectively supplied, the rod 30 passes to its working position, significant of the closing of the poles. Contacts 31 and 32a close and contact 32b opens.

If the coil of the electromagnet is not supplied, the rod 30 remains in the rest position.

When the device trips following a fault or a test operation, the rod 40 goes to its tripped position and the second output of the switch 41 goes to 1 (V +), while the contact 42 closes and the contacts 43.44 open. As the contact 44 interrupts the supply of the device, the rod 30 passes into the rest position (if it was not already), which causes the opening of the contacts 31 and 32a and the closing of the contact 32b.

Claims (3)

 Claims 1. Motor starter device comprising a main unit which is provided with power current lines with separable contacts, a contactor part (11) and a protection part (12) respectively provided with a control electromagnet (16) and at least one triggering member (18), and a manual control button (17) for controlling the current lines (15) via a mechanical control device (20), and comprising at least one removable additive (B) for communication or signaling attached to the main device, characterized in that - the mechanical control device (20) and the electromagnet (16) are associated with two movable drive members respective (30.40) one of which is representative of the state of the poles and the other of which is representative of the triggered state of the device or the position of the button, - the communication or signaling additive (B ) has at least two sets of remote contacts ncts (31,41) and each drive member actuates in the additive (B) at least one set of contacts (31,41). 2. Device according to claim 1, characterized in that the displaceable members (30,40) consist of a member (30) with two positions, with a function of signaling the state of the poles, and a member ( 40) with three positions, with trigger signaling and button status function. 3. Device according to claim 1, characterized in that the additive is an additive block (B, A) for communication or signaling removably attached to the device.