DE29813707U1 - Shield connection for modular controls directly at the contact point - Google Patents

Description

GR 98 G 3545

Description

Shielding for modular controls directly at the contact point
5

The present invention relates to the merging and derivation of a shielding potential of shielded cables in modular programmable logic controllers directly at a contact terminal.

The object of the present invention is to bring together the shield potential of shielded cables directly at the contact terminal of the individual modules of a modular programmable logic controller according to the device and to ensure the discharge of the shield potential.

This object is achieved by an assembly of an electrical device, in particular a module that can be placed in a module assembly adjacent to other modules for controlling and/or monitoring external technical processes, wherein a holding element can be locked to the assembly, wherein the holding element has a recess for receiving a busbar on the sides opposite the locking elements provided for locking to the module, and wherein a contact terminal is also provided into which a shielded cable can be inserted and wherein the contact terminal fixes both the shielded cable and the busbar in relation to the holding element when actuated.

In detail, the invention provides a device for use in connection with an assembly of an electrical device, in particular a module that can be placed adjacent to other modules in a module assembly and is intended for controlling and/or monitoring external technical processes, wherein a holding element can be locked to the module, wherein the holding element has a

GR 98 G 3545

Has a recess for receiving a busbar, and wherein a contact clamp is also provided into which a shielded cable can be inserted and wherein the contact clamp, when actuated, fixes both the shielded cable and the busbar with respect to the holding element.

If shielded cables are present on other modules, e.g. in the case of a multiple connection, the section of the busbar is made correspondingly longer. Depending on the length of the busbar, additional holding elements are snapped on as support points. One or more shield clamps can also be used between the holding elements.

The advantage of the shielding system according to the invention is that the shielding system can be easily extended and

in particular, it has the same pitch as an individual module of the programmable logic controller. The retaining element is mounted in the recess of the contact block and the busbar is mounted without tools. 20

Further features, advantages and possible applications of the invention emerge from the following description of an embodiment, based on the figures and the figures themselves. All described and/or illustrated features form the subject of the present invention, either individually or in any combination.

Show

FIG 1 shows the components intended for shielding, FIG 2 shows a shielding for a single connection and FIG 3 shows a shielding for a multiple connection.

According to FIG 1, a holding element H is provided for mounting on a module M, whereby a shield clamp K surrounds a busbar in such a way that when the cable is inserted into the shield clamp, the busbar together with the shield clamp K and the

GR 98 G 3545

The cable inserted therein can be locked to the holding element H. Additional connection terminals K' can be attached to the busbar S.

FIG 2 shows the shielding conductor according to the invention in the assembled state, with a shielded cable connected to the shielding terminal K. The conductor that carries the shielding potential away is connected to the connection terminal K ^1. Both terminals are at the same potential via the busbar S.

FIG 3 shows a multiple connection of the shielding conductor, whereby in the example according to FIG 3 a total of six individual modules M are used, but the bracket H of the shielding conductor is only attached to a total of two modules, and with these only two brackets the busbar extending over the entire width of the six individual modules can be locked. The shielding terminals K and a connection terminal K' are held on the busbar S.

Claims (1)

GR 98 G 3545 ' Il . '. I *··* ' ·'· Protection claim 1. Assembly of an electrical device, in particular a module that can be placed adjacent to other modules in a module assembly for controlling and/or monitoring external technical processes, wherein a holding element (H) can be locked to the assembly, wherein the holding element (H) has a recess for receiving a busbar (S) on the sides opposite the locking elements provided for locking to the module, and wherein a contact terminal (K) is also provided, into which a shielded cable can be inserted and wherein the contact terminal fixes both the shielded cable and the busbar (S) in relation to the holding element (H) when actuated.