EP1318537B1 - Set of electrical units for controlling power units - Google Patents

Description

The present invention relates to a set of electrical apparatus for the control of power apparatus consisting, on the one hand, by a contactor-circuit-breaker having a plurality of breaking poles actuated by an electromagnet and by a control mechanism and triggering and, secondly, by an auxiliary module connected to the power outputs of the contactor-circuit breaker and connected by control links to the latter. This set is particularly intended for the control of motors.

It is known to make a motor control diagram (reversing direction, star-delta starting, speed change, ..) by combining several electromagnetic devices interconnected at power level and control level, depending on the desired scheme.

Patent FR 2 758 903 or patent FR 2 761 521 discloses an auxiliary module paired with a contactor for switching a motor from a running operation to a reverse running operation. This module is provided with power switching poles operated by an electromagnetic control controlled by a control part. The control connections between the auxiliary module and the contactor must be made by wiring wires.

Patent EP 0774768 discloses a set of electrical appliances, in which a contactor and a communication module are connected by a control / overcurrent module.

The object of the invention is to provide a control connection block that can be plugged into outputs of the contactor-breaker and to outputs of an auxiliary module by providing the control links between said devices. This connection block provides wiring memory, avoids wiring errors, and is easy to mount without having to disassemble the power connections. It can be put in place of terminal blocks for wiring control by conventional wiring means and therefore without creating extra thickness.

The set of apparatuses according to the invention is characterized in that it comprises a connection block provided with control connectors connecting to control contactor-circuit breaker control outputs on which an alternating terminal block can be connected. control and control connectors connecting to control outputs of the auxiliary module to which can alternatively connect a control terminal block, electrical connections connecting said control connectors.

According to one characteristic, the connection block has connectors and electrical connections between said connectors for connecting power supply outputs of the solenoid coil of the contactor-circuit breaker to outputs driving, via a logic electronics circuit, an electromagnet switching pole control power of the auxiliary module.

According to another characteristic, the connection block has connectors and electrical connections between said connectors for connecting the outputs of a first control contact of the contactor-circuit breaker to control outputs of the auxiliary module which are coupled to the logic circuit. associated with the control electromagnet thereof.

According to another characteristic, the connection block has connectors and electrical connections between said connectors for connecting the outputs of a second control contact of the contactor-breaker to control outputs of the auxiliary module.

• la figure 1 est un schéma, en vue de côté, d'un contacteur-disjoncteur et d'un module auxiliaire qui lui est apparié pour constituer l'ensemble selon l'invention;
• la figure 2 est un schéma, en vue de face, des appareils illustrés à la figure 1;
• la figure 3 est une vue en perspective des appareils illustrés aux figures 1 et 2 ;
• la figure 4 est un schéma des liaisons de puissance et de contrôle reliant le contacteur-disjoncteur et le module auxiliaire;
• la figure 5 est un schéma, en coupe, du bloc de raccordement « contrôle » se montant entre le contacteur-disjoncteur et le module auxiliaire.

The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the appended drawings in which:

• Figure 1 is a diagram, in side view, of a contactor-circuit breaker and an auxiliary module which is matched to form the assembly according to the invention;
• Figure 2 is a diagram, in front view of the apparatus shown in Figure 1;
• Figure 3 is a perspective view of the apparatus illustrated in Figures 1 and 2;
• Figure 4 is a diagram of the power and control links connecting the switch-breaker and the auxiliary module;
• Figure 5 is a diagram, in section, of the connection block "control" between the switch-breaker and the auxiliary module.

The set of electrical equipment according to the invention comprises a contactor-circuit breaker CD and an auxiliary module MS.

The switch-breaker CD is provided, in breaking chambers, with poles of cut-off P able to cut or establish the current on lines of current. Each pole is of the double-break type and consists of a movable contact bridge Cm and fixed contacts Cf connected by power conductors Cp to "source" power terminals 1L1, 3L2, 5L3 and to power terminals. "Load" 2T1, 4T2, 6T3. The movable contact bridge Cm is mounted in a contact holder Pc which is biased in the direction of closure by a spring and in the direction of opening by a mechanism which will be described below.

The circuit breaker-contactor CD comprises an electromagnet E associated with a control mechanism and trigger S associated with an electromagnetic trigger D which acts on the poles. The electromagnet E and the control and triggering mechanism S are arranged in the base B which also houses the power conductors, the fixed contacts and mobile and break rooms. The function of the electromagnet E or the control and triggering mechanism S is to actuate the opening contact-holders of the various poles.

The base B has, at the rear, means for attachment to a support such as a standard rail or a carrier plate and has, at the top and bottom, terminal blocks housing the power terminals. It has, below the part containing the electromagnet E and the mechanism SD, a removable and interchangeable protection module Mp for controlling the electromagnet E and the trigger D as a function of signals delivered by current sensors. Ci which detect the currents crossing the various poles.

The sensors Ci housed in the module Mp are connected to the power conductors Cp of the various poles by resilient connectors (of the type lugs or clamps) plugging on the ends of the power conductors. These sensors Ci are connected to an electronic protection circuit Ca which produces a fault signal in the event of a short-circuit detected by the sensors or in the event of another electrical fault. The electronic protection circuit Ca is connected at its output to the electromagnetic release D of the control and triggering mechanism S and controls the supply of the coil of the electromagnet E.

A manually operated button M acts on the control mechanism S to control the operation of the poles. It is likely to take a "on" position, a "stop" position and a "triggered" position.

The auxiliary module MS performs a "motor control electrical diagram" function, for example a reversing function, a star-delta starting function, a low speed-high speed function, etc. It has "power" input terminals 1L1, 3L2, 5L3 connected to the "power" outputs 2T1, 4T2, 6T3 of the circuit breaker contactor. From these power input terminals start current lines controlled by switching poles Ps (always closed contacts) switching the current on two channels so as to perform schematic functions such as: reversing direction, star start- triangle, small speed-high speed, etc. The switching poles are operated by a switching electromagnet Em driven by an electronic control circuit C1.

In the lower part of the contactor-breaker are provided outputs A1, A2, 21, 22, 14, 13 on which a terminal block "control" Ba can be connected for wire cabling in a conventional manner or a quick connect block R allowing the Quick connection of the "control" between the contactor-breaker and the auxiliary module MS.

The outputs A1, A2 allow via the protection module Mp the power supply of the coil of the electromagnet E. The control outputs 21, 22 are connected to a first control contact Q2. The control outputs 13, 14 are connected to a second control contact Q1. These contacts Q1, Q2 are mechanically operated by the mechanism S and the electromagnet E.

On the auxiliary module MS, there are provided outputs S1, S2, S3, 82, 84, 81 on which a "control" terminal block Bs can be connected, allowing wire cabling in a conventional manner, or the quick connect block R enabling rapid connection. "control" between the contactor-breaker and the auxiliary module.

The outputs S1, S2, S3 cooperate with the contactor-circuit-breaker CD and the signals on these outputs are sent to a logic electronic circuit Cl driving the control electromagnet Em of the switching poles Ps. These outputs S1, S2, S3 connect to control outputs A1, A2 and 21 of the circuit breaker.

When the control terminal block Bs or the connection block R is removed, the outputs (plugs) for the electrical connection of the terminal block Bs or of the block R appear on the front face of the auxiliary module MS.

Terminal inputs "control" of the auxiliary module MS marked 01, 03, A1, A2, A3 are intended to receive engine control commands issued for example by buttons. The signals applied to these input terminals are sent to the logic circuit C1 or to the electromagnet Em.

The connection block R can be connected to the outputs A1, A2, 21, 22, 14, 15 of the contactor-breaker and to the control outputs S1, S2, S3, 82, 84, 81 of the module MS auxiliary. It has female connectors G (of the type with elastic clamps) plugging on the outputs A1, A2, 21, 22, 14, 15 of the switch-breaker and the female connectors J (of the type with elastic clamps) plugged into the outputs S1, S2, S3, 82, 84, 81 of the auxiliary module MS. It comprises electrical connections (wires, etc.) for connecting the outputs A1, A2 of the contactor-breaker to the outputs S1, S2 of the auxiliary module and the links connecting the outputs 21, 22 of the control contact Q2 to the outputs S2, S3 of the module which go to the logic circuit C1. Electrical connections connect the outputs of the contact Q1 to outputs 81, 82, 84.

The connection block R has holes T allowing access by a tool to the power terminals 2T1, 4T2, 6T3 of the switch-breaker located behind said connection block.

Each control terminal block Bc or Bs has, on the front face, a sliding V-locking pull tab which in the working (depressed) position immobilizes it on the switch-breaker CD or the auxiliary module MS. The terminals are screw type, faston type, or spring type. As in the connection block the connections to the control outputs are made by identical or similar elastic connectors.

The removable connection block R also has a locking pull tab.

To carry out a motor control application, it is simply necessary to plug the connection block R on the outputs A1, A2, 21, 22, 14, 15 of the contactor-breaker and on the inputs S1, S2, S3, 82, 84 , 81 of the auxiliary module. The auxiliary module can be mounted under or next to the switch-breaker.

Claims (8)

1. A set of electrical units for controlling power units, comprising a contactor breaker (CD) with a plurality of current breaking poles actuated by a solenoid (E) and by a control and tripping mechanism (D, S) on the one hand, and by an auxiliary module (MS) connected with the power outputs of the contactor breaker and connected via control links to the latter on the other hand, characterized by the fact that it includes a control connection block (R) provided with control connectors (G) which connect to control outputs (A1, A2, 21, 22, 14, 13) of the contactor breaker able to connect alternatively a control terminal block (Ba) and control connectors (J) connecting to control outputs (S1, S2, S3, 82, 84, 81) of the auxiliary module (MS) may be connected, with control outputs onto which an other control terminal block (Bs) may be connected alternatively, with electrical links connecting said control connectors (G, J).
2. The set according to claim 1, characterized by the fact that the connection block (R) has connectors (G, J) and electrical links between said connectors allowing power supply outputs of the coil (A1, A2) of the solenoid of the contactor breaker to be connected to outputs (S1, S2) driving, via a logic circuit (CI), a solenoid (Em) for controlling power switching poles of the auxiliary module (MS).
3. The set according to claim 1 or 2,
   characterized by the fact that the connection block (R) has connectors (G, J) and electrical links between said connectors allowing the outputs (21, 22) of a first control contact (Q2) of the contactor breaker to be connected to control outputs (S2, S3) of the auxiliary module (MS) which are coupled with the logic circuit (CI) associated with the solenoid (Em) controlling the latter.
4. The set according to any of the preceding claims, characterized by the fact that the connection block (R) has connectors (G, J) and electrical links between said connectors allowing the outputs (13, 14) of a second control contact (Q2) of the contactor breaker to be connected to control outputs (82, 84, 81) of the auxiliary module (MS).
5. The set according to any of the preceding claims, characterized by the fact that the control contacts (Q1, Q2) are mechanically actuated by the tripping mechanism (S) and by the solenoid (E).
6. The set according to any of the preceding claims, characterized by the fact that the connectors (G, J) plugging into the outputs (A1, A2, 21, 22, 14, 15, S1, S2, S3, 82, 84, 81) of the contactor breaker and of the auxiliary module (MS) are of the female type with resilient clamps.
7. The set according to any of the preceding claims, characterized by the fact that the connection block (R) has holes (T) providing access by a tool to power terminals located behind.
8. The set according to any of the preceding claims, characterized by the fact that each removable control terminal block (Bc, Bs) or connection block (R) has on its front face a lock (V) used for securing it on the contactor breaker or on the auxiliary module.

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