WO2023237499A1

WO2023237499A1 - Bus module and module system comprising such a bus module

Info

Publication number: WO2023237499A1
Application number: PCT/EP2023/065017
Authority: WO
Inventors: Christopher Smith; Torsten Diekmann; Jörg Richts
Original assignee: Weidmüller Interface GmbH & Co. KG
Priority date: 2022-06-08
Filing date: 2023-06-05
Publication date: 2023-12-14
Also published as: DE102022114400A1

Abstract

The invention provides a bus module (10, 10', 10'') of a module system (1) comprising at least two module units (2, 2', 2''), for connecting and disconnecting respective electrically conductive power rails (6, 7, 8; 6', 7', 8'; 6'', 7'', 8'') and respective signal buses (9, 9', 9'') of the at least two module units (2, 2', 2'') of the module system (1). At least one bus plug-in module (12, 12', 12'') for connecting the signal buses (9, 9', 9'') in a manner able to be adjusted relative to the bus module (10, 10', 10'') is arranged in the bus module (10, 10', 10''). A module system (1) contains the at least one bus module (10, 10', 10'').

Description

Bus module and module system with such a bus module

The invention relates to a bus module according to the preamble of claim 1. The invention also relates to a module system with such a bus module.

Such bus modules establish electrical connections of, for example, power lines, control lines, sensor lines and the like between module units of a module system.

In a simple embodiment, the bus modules are electrically conductive transverse and/or longitudinal connectors that are firmly attached between the lines of a respective module unit during assembly.

Other bus modules can be moved from an initial position to an end position and back. Adjustment is possible, for example, by simply plugging in and pulling out or moving.

The modular units of a modular system include, for example, drive controls, power supplies, safety units, etc.

The documents EP 3 111 516 B1, EP 3 284 210 B1, US 10 938 967 B2 illustrate examples of modular systems.

With increasing automation, there is a continually increasing need for modular systems with module bus units and improved bus modules with a compact design, safe and simplified handling for production and application.

Therefore, the object of the present invention is to create an improved bus module for module units of modular systems.

Another task is to provide an improved module system with an improved bus module.

The task is solved by a bus module with the features of claim 1.

The further task is solved by a modular system with the features of claim 11. A bus module according to the invention of a module system with at least two module units, for connecting and disconnecting respective electrically conductive power rails and respective signal buses of the at least two module units of the module system, is characterized in that in the bus module at least one bus plug-in module for connecting the signal buses is adjustable relative to the bus module is arranged.

One advantage here is that the signal bus can be separated when the module units are connected by the bus plug-in module with its movement option that is separate from the bus module.

A module system according to the invention comprises at least two module units and at least one bus module, each module unit having respective guides in the form of slots or grooves and respective electrically conductive power rails in longitudinal grooves parallel to the guides and a respective signal bus, the at least one bus module being in the guides by means of Guide projections and are displaceably guided in the power rails by means of line projections, the line projections each having an electrically conductive section, which are each in electrically conductive contact and engagement with the electrically conductive power rails, the at least one bus module being moved from a starting position ASx , in which the electrically conductive power rails of the at least two module units are interrupted, into an end position ESx, in which the electrically conductive power rails of the at least two module units are each electrically conductively connected by the line projections of the at least one bus module, and back in the direction of the guides and power rails is movable. The at least one bus module has a bus plug-in module, which moves from an initial position ASy, in which the signal buses of the at least two module units are interrupted, to an end position ESy, in which the signal buses of the at least two module units are electrically conductively connected by the bus plug-in module, and back to a direction perpendicular to a direction of movement of the bus module is arranged to be adjustable relative to the bus module.

In the event of an error or test, each individual module unit can be disconnected from the signal bus for troubleshooting and an error can be searched for during ongoing operation. Since the bus plug-in module can be adjusted independently of the bus module, the power supply in the module system according to the invention does not necessarily have to be disconnected as with conventional bus modules. Since with conventional bus modules it is often only possible to open and close the entire system with one movement, this is separate Adjustable bus plug-in module in the event of an error and also when troubleshooting is a big advantage.

This makes it particularly easy to check for testing purposes during maintenance or after troubleshooting.

In one embodiment, the at least one bus plug-in module is arranged to be guided in an adjustable manner relative to the bus module from a starting position ASy into an end position ESy and back in a direction perpendicular to a direction of movement of the bus module. This arrangement is advantageous because it makes it easy to operate.

For this purpose, in a further embodiment, the at least one bus plug-in module is arranged in a through opening of a carrier element of the bus module. This enables an advantageous compact structure.

In a still further embodiment, the through opening has guide sections which run in the direction perpendicular to the direction of movement of the bus module and which cooperate with guide lugs of the bus plug-in module. One advantage here is that jamming and/or tilting of the bus plug-in module in the carrier element is avoided.

For an advantageously simple connection and a compact structure, the bus plug-in module has two plugs with contact pins on one underside, the contact pins of one plug each being electrically conductively connected to contact pins of the other plug.

In another embodiment it is provided that the bus plug-in module has a latching device which interacts with latching sections of the through opening of the carrier element of the bus module. This results in an advantageous determination of the connection position and the end position of the bus plug-in module.

Alternatively or additionally, in yet another embodiment, geometries for limiting and fixing the bus plug-in module in its starting position ASy and end position ESy are arranged between the bus plug-in module and the support element of the bus module. This results in the advantage of defined positions.

In a further embodiment, the bus plug-in module is designed as a test plug with the same geometries as the bus plug-in module and with test cables or lines. The test plug offers a particular advantage when handling individual test cables or lines, as the guide of the test plug allows both test cables or lines to be plugged in and the contacts of the test cables or lines can be found immediately. The test cables or lines are permanently installed in the test plug. This eliminates the need to plug in the two test cables or lines individually, as both can be plugged in at once.

Since the power supply is maintained, troubleshooting can advantageously be carried out during operation, with handling being advantageously made easier by the test plug.

One embodiment provides that guide webs and line webs are formed on the support element of the bus module, the line webs having electrically conductive sections. This results in an advantageous compact structure.

In another embodiment, the bus module has a locking device, whereby the respective position can advantageously be safely maintained.

A further embodiment of the module system provides that the at least one bus module is locked in its starting position ASx and in its end position ESx by means of a locking device. This means that the respective position can be secured quickly and easily.

In another embodiment of the module system, the starting position ASx and the end position ESx of the at least one bus module are limited and/or fixed by geometries between the at least one bus module and the respective associated module unit. This results in an advantageously simple and compact structure.

In a further embodiment of the module system, it is provided that the at least one bus module is designed as a bus module as described above.

An exemplary embodiment of the invention is described below with reference to the accompanying drawings. This exemplary embodiment merely serves to illustrate the invention using preferred constructions, which, however, do not exhaustively represent the invention. In this respect, other exemplary embodiments as well as modifications and equivalents of the illustrated exemplary embodiment can also be implemented within the scope of the claims. Figure 1 is a schematic perspective view of a module system with bus modules according to the invention;

Figures 2-3 show schematic perspective partial views of the module system with bus modules according to the invention according to Figure 1 in various positions;

Figure 4 is a schematic perspective partial view of the module system with bus modules according to the invention according to Figure 2 in end positions;

Figure 5 shows a schematic perspective view of bus plug-in modules of the bus modules according to the invention in different positions;

Figure 6 is a schematic exploded view of a bus module;

Figure 7 shows a schematic perspective view of a bus plug-in module; and

Figure 8 is a schematic perspective partial view of the module system with bus modules according to the invention according to Figure 2 with a test plug.

Coordinates x, y, z are given for better orientation. In the examples shown, the x coordinate runs horizontally, while the z coordinate lies vertically. The coordinate y runs perpendicular to the horizontal x and perpendicular to the vertical z. The terms “top”, “bottom”, “side” and the like refer to the respective arrangement in the respective figure.

Figure 1 shows a schematic perspective view of a module system 1 with bus modules 10, 10 ', 10 "according to the invention.

Figure 2 shows a schematic perspective partial view of the module system 1 with the bus modules 10, 10', 10" according to the invention according to Figure 1 in a starting position ASx of the bus modules 10, 10', 10".

3 shows the partial view of the module system 1 according to FIG. 2 in an end position ESx of the bus modules 10, 10 ', 10".

4 shows a schematic perspective partial view of the module system 1 with bus modules 10, 10 ', 10" according to the invention according to FIG. 2 in end positions ESx. Figure 5 shows a schematic perspective view of bus plug-in modules 12, 12', 12” of the bus modules 10, 10', 10” according to the invention in different positions. Figure 6 shows a schematic exploded view of a bus module 10.

In Figure 1, a module system 1 is shown as an example with three module units 2, 2 ', 2". The module units 2, 2', 2" can, for example, be different or identical module units 2, 2', 2" of a control system for different drives (not shown).

Each module unit 2, 2′, 2″ has a bus area 3 on a respective bus side 2a. The bus side 2a and the bus area 3 are both arranged in xz planes.

Respective guides 4, 4a, 4b, 5 run in the bus areas 3; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” in the form of slots or grooves parallel to the horizontal x. Also parallel to the horizontal x and to the guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” are respectively electrically conductive power rails 6, 7, 8; 6', 7', 8'; 6”, 7”, 8” arranged in longitudinal grooves electrically isolated from each other.

All guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” of the module units 2, 2’, 2” arranged next to each other are aligned with each other. Also the power rails 6, 7, 8; 6', 7', 8'; 6”, 7”, 8” of all module units 2, 2’, 2” arranged next to each other are aligned with each other.

Furthermore, a signal bus 9, 9', 9" is arranged in the bus area 3 of each module unit 2, 2 ', 2". The signal bus 9, 9 ', 9" each has two connection sockets 15, 16; 15', 16'; 15”, 16”. This is shown in Figure 5 and will be described in more detail below. Contacts of the connection sockets 15, 16; 15', 16'; 15”, 16” run in the direction of the y coordinate.

Each bus module 10, 10', 10" includes a support element 11 (see Figure 6) and at least one bus plug-in module 12, 12', 12".

The carrier element 11 has a top 11a, an actuating section 11b, a through opening 11c and a bottom 11d.

The bus plug-in module 12, 12', 12" is accommodated in the through opening 11c of each bus module 10, 10', 10" so that it can be adjusted in the y direction. In the example shown, the bus plug-in module 12, 12', 12" is accommodated in a slidably guided manner in the through opening 11c. The through opening 11c here has guide sections 13 on its long sides, which run in the y-direction and interact with guide lugs 19 (see Figure 7) of the bus plug-in module 12, 12 ', 12".

In addition, in this example, a locking section 14 is formed in the middle of each guide section 13 of the through opening 11c, which interacts with locking devices 19a (see Figure 7) of the bus plug-in module 12, 12 ', 12".

The support element 11 of each bus module 10, 10 ', 10" forms a rectangle in a projection onto an xz plane, here in the example shown with two parallel short sides that run in the x direction and with two parallel long sides that are in y direction.

Guide webs 11 -4, 11 -4a, 11 -4b, 11 -5 and line webs 11 -6, 11 -7, 11 -8 are formed on the support element 11.

The guide webs 11 -4, 11 -4a, 11 -4b protrude downwards from the underside 11d of the support element 11 in the y direction, each lie in an xy plane and extend in the x direction, in this example they extend over the entire width of the support element 11 in the x direction.

Each guide web 11 -5 is attached to a short side of the carrier element 11, lies in an xz plane and protrudes from the respective short side of the carrier element 11 in the z direction.

The bus modules 10, 10', 10" are in the guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” and in the power rails 6, 7, 8; 6', 7', 8'; 6”, 7”, 8” arranged so that it can be moved horizontally in the x direction. The guide projections 11 -4, 11 -4a, 11 -4b, 11 -5 are each in the guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” engage with these respectively. The line projections 11 -6, 11 -7, 11 -8 have an undesignated electrically conductive section and each have their electrically conductive section in the electrically conductive power rails 6, 7, 8; 6', 7', 8'; 6”, 7”, 8” in electrically conductive contact and engagement with these.

The bus modules 10, 10 ', 10" are from one side of the bus area 3 into the guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” and into the power rails 6, 7, 8; 6', 7', 8'; 6”, 7”, 8” inserted horizontally in the x direction. After assembly is Each bus module 10, 10 ', 10" can be moved in the x direction from a starting position ASx (position X1, Figure 2) into an end position ESx (position X2, Figure 3) and back.

The starting position ASx and the end position ESx of each bus module 10, 10', 10" are determined by geometries that are not shown but are easily imaginable between the support element 11 of each bus module 10, 10', 10" and the associated module unit 2, 2', 2 " limited. These geometries also make fixation possible.

Locking a respective bus module 10, 10', 10" in its starting position ASx and end position ESx is possible by means of a locking device. Such a locking device is not shown, but is easy to imagine. For example, this locking device can have a rotatable pin which, in the bus module 10, 10', 10" in the respective position, interacts with a locking section of the associated module unit 2, 2', 2". A sliding latch, for example, can also be used.

The bus plug-in module 12, 12', 12" is displaceably arranged in the through opening 11c of the carrier element 11 of each bus module 10, 10', 10" and is moved from a starting position ASy (position Y1, FIG. 2) to an end position ESy (position Y2, Figure 3) and back in the y direction perpendicular to an xz plane of the carrier element 11 of the bus module 10, 10 ', 10" in the through opening 11c relative to the carrier element 11. In this way, the bus plug-in module 12, 12', 12" can be displaced in the x direction together with the associated bus module 10, 10', 10" and carries out its movement in the x direction together with the bus module 10, 10', 10". .

Between the bus plug-in module 12, 12', 12" and the associated support element 11 of a bus module 10, 10', 10" there are also geometries (not shown) for limiting and fixing the bus plug-in module 12, 12', 12" in its starting position ASy and end position ESy arranged.

When the bus module 10, 10', 10" is installed, the associated bus plug-in module 12, 12', 12" is located in the through opening 11c of the carrier element 11 in the starting position ASy. The bus module 10, 10', 10" is pushed into its starting position ASx (Figure 2) and fixed with the locking device.

When connecting the module units 2, 2', 2" to one another, in a first step each bus module 10, 10', 10" is removed from its respective one Starting position ASx in its final position ESx in the positive x direction in the guides 4, 4a, 4b, 5; 4', 4'a, 4'b, 5'; 4”, 4”a, 4”b, 5” and the electrically conductive power rails 6, 7, 8; 6', 7', 8”; 6”, 7”, 8” moved. The electrically conductive power rails 6, 7, 8; 6', 7', 8' or 6', 7', 8';6",7",8" of two module units 2, 2 'or 2', 2" arranged next to one another are electrically conductively connected via the electrically conductive sections of the line projections 11-6, 11 -7, 11 -8 of the carrier element 11.

In a second step, the signal buses 9, 9' or 9', 9" of two module units 2, 2' or 2', 2" arranged next to one another are electrically connected in an electrically conductive manner by means of the respective bus plug-in module 12, 12', 12". For this purpose, each bus plug-in module 12, 12', 12" is moved from its respective starting position ASy to its respective end position ESy. For this purpose, Figure 5 shows an enlarged view of bus plug-in modules 12, 12', 12" in different positions.

Figure 7 shows a schematic perspective view of a bus plug-in module 12, 12 ', 12".

The bus plug-in module 12, 12', 12" includes an upper part 12a with an actuating section 12c and a lower part 12b. The bus plug-in module 12, 12', 12" is designed here as a cuboid with rounded corners, a long side 12d and a transverse side 12e.

Guide lugs 19 are formed on one long side 12d or both long sides 12d of the bus plug-in module 12, 12', 12", which protrude in the z direction from one long side 12d or the long sides 12d. The guide lugs 19 serve to guide the bus plug-in module 12, 12', 12" in the corresponding guide sections 13 of the through openings 11c of the carrier element 11 of the bus module 10, 10', 10" (see Figure 4 and Figure 6).

A latching device 19a is arranged in the middle of each long side 12d of the bus plug-in module 12, 12 ', 12". This locking device 19a here has a resilient tongue 19b with a projection 19c. The latching device 19a interacts with the latching sections 14 of the through opening 11c of the carrier element 11 of the bus module 10, 10 ', 10" (see Figure 4 and Figure 6).

Attached to the underside of the lower part 12b are two plugs 17, 17', 17" and 18, 18', 18" with unmarked contact pins, which are spaced apart from one another in both the x direction and the z direction. The contact pins of one plug 17, 17 ', 17” are each electrically conductively connected to contact pins of the other plug 18, 18’, 18”.

If the bus plug-in module 12, 12', 12" is arranged in the initial position ESy, the plugs 17, 17', 17" and 18, 18', 18" are connected to the connection sockets 15, 16; 15', 16'; 15", 16" of the signal bus 9, 9 ', 9" spaced so far in the y direction that the plugs 17, 17', 17" and 18, 18', 18" of the bus plug-in module 12, 12', 12" at the horizontal movement of the bus module 10, 10 ', 10" in the x direction via the counterparts, i.e. the connection sockets 15, 16; 15', 16'; 15”, 16” of the signal bus 9, 9’, 9”.

If the bus module 10, 10', 10" is in its end position ESx, the bus plug-in module 12, 12', 12" is moved from its starting position ASy to its end position ESy. In this end position ESy, the plugs 17, 17', 17" and 18, 18', 18" are then in engagement with the connection sockets 15, 16; 15', 16'; 15”, 16” of the signal bus 9, 9’, 9” and thus establish an electrically conductive connection of the signal buses 9, 9’, 9”.

In this state of the module units 2, 2', 2" connected by means of the bus modules 10, 10', 10" in their end position ESx, the respective signal bus 9, 9' connected by the bus plug-in modules 12, 12', 12" in their end position ESy can , 9” can be separated separately by moving the respective bus plug-in module 12, 12 ', 12” from its respective end position ESy to the starting position ASy. However, the power supply to the module units 2, 2', 2" connected by the bus modules 10, 10 ', 10" in their end position ESx continues to be maintained. In other words, in the event of an error or test, each individual module unit 2, 2', 2" can be separated from the signal bus 9, 9', 9" for troubleshooting and an error can be searched for during ongoing operation. This makes it particularly easy to check for testing purposes during maintenance or after troubleshooting.

7 shows a schematic perspective partial view of the module system 1 with the bus modules 10, 10 ', 10" according to the invention according to FIG. 2 with a test plug 20.

The test plug 20 has the same geometries as the bus plug-in module 12, 12', 12”. The movement of the test plug 20 can be guided and limited or even fixed based on the same geometries as the bus plug-in module 12, 12 ', 12". In this way it is easily possible to connect the relevant bus plug-in module 12, 12', 12” can be removed individually and easily replaced with the test plug 20.

The test plug 20 offers a particular advantage when handling individual test cables or lines 21, since both test cables or lines 21 can be plugged in by guiding the test plug 20 and the contacts of the test cables or lines 21 can be found immediately. The test cables or lines 21 are permanently installed in the test plug 20. This eliminates the need to plug in the two test cables or lines 21 individually, as both can be plugged in at once.

Since the power supply is maintained, troubleshooting can be carried out during operation, with handling being made easier by the test plug 21.

Since the structure described means that the power supply does not necessarily have to be disconnected as with other bus modules, since often only one movement is possible to open and close the entire system, this offers a great advantage in troubleshooting and in checking and testing in the event of an error.

The invention is not limited to the exemplary embodiments explained above. The invention is modifiable within the scope of the appended claims.

Reference symbols

1 modular system

2, 2’, 2” modular unit

2a bus side

3 bus area

4, 4a, 4b; 5 leadership

6, 7, 8 power rails

9, 9’, 9” signal bus

10, 10’, 10” bus module

11 carrier element

11a top

11 b operating section

11c passage opening

11d bottom

11-4, 11-4a, 11-4b, 11-5 leading bar

11-6, 11-7, 11-8 cable bridge

12, 12’, 12” bus plug-in module

12a top

12b lower part

12c operating section

12d long side

12e transverse side

13 leadership section

14 rest section

15, 16; 15', 16'; 15”, 16” connection socket

17, 18; 17', 18'; 17”, 18” plug

19 guide nose

19a Rest device

20 test plugs

21 test line

ASx, ASy initial position

ESx, ESy end position x, y, z coordinates

X1, X2; Y1 , Y2 position

Claims

Expectations

1 . Bus module (10, 10', 10") of a module system (1) with at least two module units (2, 2', 2"), for connecting and disconnecting respective electrically conductive power rails (6, 7, 8; 6', 7' , 8'; 6", 7", 8") and respective signal buses (9, 9', 9") of the at least two module units (2, 2', 2") of the module system (1), characterized in that in the Bus module (10, 10', 10”) at least one bus plug-in module (12, 12', 12”) for connecting the signal buses (9, 9', 9”) arranged in an adjustable manner relative to the bus module (10, 10', 10”) is.

2. Bus module (10, 10 ', 10") according to claim 1, characterized in that the at least one bus plug-in module (12, 12', 12") from a starting position ASy into an end position ESy and back in a direction perpendicular to a direction of movement of the bus module (10, 10', 10”) is arranged so that it can be adjusted relative to the bus module (10, 10', 10”).

3. Bus module (10, 10 ', 10") according to claim 2, characterized in that the at least one bus plug-in module (12, 12', 12") in a through opening (11 c) of a carrier element (11) of the bus module (10, 10 ', 10") is arranged.

4. Bus module (10, 10', 10") according to claim 3, characterized in that the through opening (11c) has guide sections (13) which are in the direction perpendicular to the direction of movement of the bus module (10, 10', 10") ) and which interact with guide lugs (19) of the bus plug-in module (12, 12 ', 12”).

5. Bus module (10, 10', 10") according to claim 4, characterized in that the bus plug-in module (12, 12', 12") has two plugs (17, 17', 17"; 18, 18') on one underside. 18”) with contact pins, the contact pins of one plug (17, 17', 17”) each being electrically conductively connected to contact pins of the other plug (18, 18', 18”).

6. Bus module (10, 10', 10”) according to one of claims 1 to 5, characterized in that the bus plug-in module (12, 12', 12”) has a latching device (19a) which is connected to latching sections (14) of the through opening (11 c) of the carrier element (11) of the bus module (10, 10 ', 10”) interacts. Bus module (10, 10', 10”) according to one of claims 3 to 6, characterized in that between the bus plug-in module (12, 12', 12”) and the carrier element (11) of the bus module (10, 10', 10”) ) Geometries for limiting and fixing the bus plug-in module (12, 12 ', 12”) are arranged in its starting position ASy and end position ESy. Bus module (10, 10', 10") according to one of the preceding claims, characterized in that the bus plug-in module (12, 12', 12") is designed as a test plug (20) with the same geometries as the bus plug-in module (12, 12', 12 ”) and is designed with test cables or lines (21). Bus module (10, 10', 10") according to one of the preceding claims, characterized in that on the carrier element (11) of the bus module (10, 10', 10") guide webs (11 -4, 11 -4a, 11 -4b , 11 -5) and line webs (11 -6, 11 -7, 11 -8) are formed, the line webs (11 -6, 11 -7, 11 -8) having electrically conductive sections. Bus module (10, 10', 10”) according to claim 9, characterized in that the bus module (10, 10', 10”) has a locking device. Module system (1) with at least two module units (2, 2', 2”) and at least one bus module (10, 10', 10”), each module unit (2, 2', 2”) having respective guides (4, 4a, 4b, 5; 4', 4'a, 4'b, 5';4",4"a,4"b,5") in the form of slots or grooves and to the guides (4, 4a, 4b, 5; 4', 4'a, 4'b, 5';4",4"a,4"b,5") respective parallel electrically conductive power bars (6, 7, 8; 6', 7', 8';6",7",8") in longitudinal grooves and a respective signal bus (9, 9 ', 9"), with the at least one bus module (10, 10', 10") in the guides (4, 4a, 4b , 5; 4', 4'a, 4'b, 5';4",4"a,4"b,5") using guide projections (11 -4, 11 - 4a, 11 -4b, 11 -5) and is displaceably arranged in the power rails (6, 7, 8; 6', 7', 8';6",7",8") by means of line projections (11 -6, 11 -7, 11 -8), whereby the line projections (11 -6, 11 -7, 11 -8) each have an electrically conductive section, which are each connected to the electrically conductive power rails (6, 7, 8; 6', 7', 8';6",7",8") are in electrically conductive contact and engagement with these, the at least one bus module (10, 10', 10") coming from a starting position ASx, in which the electrically conductive power rails (6, 7, 8; 6', 7', 8';6",7",8") of the at least two module units (2, 2', 2") are interrupted, into an end position ESx, in which the electrically conductive power rails (6, 7, 8; 6', 7', 8';6",7",8") of the at least two module units (2, 2', 2") through the line projections (11 -6, 11 -7, 11 -8 ) of at least one bus module (10, 10', 10”) are each electrically connected, and back in the direction of the guides (4, 4a, 4b, 5; 4', 4'a, 4'b, 5';4", 4”a, 4”b, 5”) and power rails (6, 7, 8; 6’, 7’, 8’; 6”, 7”, 8”) can be moved, characterized in that the at least one bus module ( 10, 10', 10”) has a bus plug-in module (12, 12', 12”), which comes from an initial position ASy, in which the signal buses (9, 9', 9”) of the at least two module units (2, 2', 2”) are interrupted, into an end position ESy, in which the signal buses (9, 9', 9”) of the at least two module units (2, 2', 2”) are electrically connected by the bus plug-in module (12, 12', 12”) are conductively connected, and is arranged to be adjustable in a direction perpendicular to a direction of movement of the bus module (10, 10', 10”) relative to the bus module (10, 10', 10”). Module system (1) according to claim 11, characterized in that the at least one bus module (10, 10 ', 10”) is locked in its starting position ASx and in its end position ESx by means of a locking device. Module system (1) according to claim 11 or 12, characterized in that the starting position ASx and the end position ESx of the at least one bus module (10, 10 ', 10") are determined by geometries between the at least one bus module (10, 10', 10") and the respective associated module unit (2, 2', 2”) are limited and/or fixed. Module system (1) according to one of claims 11 to 13, characterized in that the at least one bus module (10, 10', 10") is designed as a bus module (10, 10', 10") according to one of claims 1 to 10 .