Technique for arranging the conductors of a connecting cable

Abstract

The invention relates to a system (300) for wired signaling. The system (300) comprises a connecting cable (200) of a device, wherein the connecting cable (200) includes at least two conductors (202) for signaling, and wherein the conductors (202) are provided outside the sheath at a free end of the connecting cable (200) for connection to the device. The system (300) further comprises a conductor holder (100) for receiving the individual conductors (202) at the free end of the connecting cable (200). The invention further relates to a use (400) of a conductor holder (100) for the sorted arrangement of conductors (202) of a connecting cable (200).

Description

[0001] The present invention relates to a technique for arranging the wires of a connecting cable. In particular, a system with a wire holder for receiving the individual wires at the free end of the connecting cable and a corresponding use of the wire holder are disclosed.

[0002] Wiring plays an important role in industry, both for power supplies and signal connections. The wiring between the field level and the automation level is an example of input and output wiring (technically known as I / O wiring) with sensors as input field devices and actuators as output field devices connected to a controller in an automation system. This wiring enables the reliable exchange of analog or digital signals between the field devices and the controller in order to monitor and control processes. Some field devices require separate cables for power supply and signal acquisition, while others use a combined cable or, with phantom power, even the same wires (for example, with Power over Ethernet, PoE). In any case, interface cabling (technically known as interface cabling, IF cabling) uses connecting cables that have multiple wires (e.g.B. signal conductors).

[0003] However, connecting cables with up to 50 individual wires typically have their ends arranged in a random bundle. For example, at the free end of the connecting cable, the ends of the wires are only numbered using bird rings. This means that the wires of a connecting cable are delivered unsorted and jumbled together. The user must select the desired individual wires from the entire cable harness and sort them as required. Only then can the user apply the application-specific cable labels or route and connect the individual wires as required. Selecting the required wires increases installation time and simultaneously compromises the quality and safety of the installation.

[0004] It is therefore an object of the present invention to enable quick and reliable identification and handling of the individual wires of a connecting cable.

[0005] According to one aspect of the device, a system for wired signaling is provided. The system comprises a connecting cable of a device. The connecting cable comprises at least two wires for signaling. In one section of the connecting cable, the wires are arranged in a sheath of the connecting cable. At a free end of the connecting cable, the wires are provided outside the sheath for connection to the device. The system further comprises a wire holder for receiving the individual wires at the free end of the connecting cable.

[0006] The system, in particular the connecting cable, can be designed for electrical wiring between a field level and an automation level. Alternatively or additionally, the device can be a field device. The field device can be a sensor or an actuator.

[0007] The connection (i.e., the connection) to the device can involve the application of the individual wires to the device. For example, the wires at the free end of the connecting cable can each be connected or connectable to the device by means of a clamping connection (short: terminal), for example a pole terminal, a screw terminal, a spring-loaded terminal, or an insulation displacement terminal.

[0008] The connecting cable can be connected or connectable to an automation level at an end opposite the free end (also called the field-side end), for example (directly or indirectly) to a programmable logic controller (PLC), optionally via I / O signal conversion (technically known as I / O signal marshalling). Alternatively or additionally, the connecting cable can have a connector half at the end opposite the free end, for example, for connection to the automation level. The connector half can comprise a D-Sub male connector or a D-Sub female connector, or an FLK connector (technically known as "compact female connector").

[0009] The connecting cable can be referred to as a cable for short. Alternatively or additionally, the connecting cable can be referred to as a multi-core connecting cable, since the connecting cable comprises at least two cores. Alternatively or additionally, the connecting cable can be referred to as a signal cable, since the connecting cable is designed and / or connected for wired signaling.

[0010] Each wire can have an electrical conductor (e.g., made of copper or a copper alloy) and insulation (also called wire insulation, e.g., made of plastic). For example, the wires of the connecting cable can be electrically insulated from each other, for example, within the sheath. Alternatively or additionally, the wires (e.g., the wire insulation) can be colored differently.

[0011] Optionally, each conductor can be a solid conductor or a stranded conductor (i.e., a flexible multi-wire conductor). Each core can have a solid wire or a stranded wire as the electrical conductor. Accordingly, the core holder can be referred to as a stranded wire holder or a wire holder.

[0012] The wires at the free end outside the sheath can be individual (e.g. movable relative to one another). The wires can be “individual” at the free end of the connecting cable in contrast to the section of the connecting cable, i.e. a point further away from the free end (e.g. within the course of the connecting cable and / or at an end of the connecting cable opposite the free end) at which the wires are enclosed in the common sheath. The wires can be arranged together within the sheath (e.g. without play). The wires can be held in a predetermined arrangement within the sheath, for example to minimize crosstalk, interference and / or signal loss. Optionally, the wires can be twisted (in technical terms: twisted) within the sheath (e.g. in pairs).

[0013] The ends of the wires at the free end of the connecting cable can be pre-assembled, for example, stripped (i.e., stripped of the wire insulation). The wire holder can be arranged between the stripped ends of the wires and the section with the sheath of the connecting cable, for example, arranged so as to be longitudinally movable (i.e., movable).

[0014] The signaling can be input and / or output signaling (short: I / O signaling, or in technical terms: I / O signaling for input / output signaling). In other words, the wiring via the connecting cable can be I / O wiring between the field and automation levels. Each wire can be configured to transmit an electrical potential value of the I / O signaling.

[0015] The number (e.g., 2, 3, 9, 15, 25, 37, or 50) of wires in the connecting cable can vary depending on the application. Alternatively or additionally, the at least two wires held or accommodated by the wire holder can be a subset of all wires in the connecting cable. For example, wires for the power supply can be part of the connecting cable without being part of the at least two wires held or accommodated by the wire holder.

[0016] The connecting cable can comprise the at least two wires in a single sheath in the section. Alternatively or additionally, the insulation of the individual wires and the sheath of the at least two wires can be non-integral and / or non-materially connected. Furthermore, the signal cable can be designed as a cable; for example, the connecting cable can have an additional (optionally solid) cable sheath in the section.

[0017] The wire holder of the system can be made of a flexible and / or elastic plastic, optionally of an elastomer (e.g. silicone).

[0018] The wire holder can accommodate the wire insulation of the individual wires (preferably in an undeformed state—i.e., closed state—of the wire holder, for example, a force-free state). For example, the wire insulation can be positively held transversely to the longitudinal direction of the wire. Alternatively or additionally, the wire insulation can be frictionally held parallel to the longitudinal direction of the wire (optionally longitudinally movable with an adhesive-sliding effect).

[0019] The wire holder can be flexible and / or elastic, for example, bendable with respect to a bending axis, which can be parallel or perpendicular to the longitudinal direction of the accommodated wires. The bending axis can be determined by (a) a principal axis of the stress tensor of the wire holder and / or (b) a principal axis of the strain tensor of the wire holder and / or (c) a vector direction of the bending moment of the wire holder.

[0020] Here, "elastic" can encompass the ability of the wire holder to reversibly return from the bent state (i.e., open state) to its original shape (i.e., its undeformed state, the closed state) when the forces that caused the bent state are removed. Alternatively or additionally, "flexible" can encompass the ability of the wire holder to bend into the open state without breaking. The open state can also be a plastic deformation (for example, depending on the material of the wire holder).

[0021] The wire holder of the system can be designed in one piece.

[0022] Optionally, the wire holder can be made of a single piece, for example, a molded part. This makes the wire holder flexible and break-resistant. Alternatively or additionally, the one-piece (e.g., integrally formed) wire holder can be made of a transparent plastic, allowing the wires to be clearly visible from different perspectives (e.g., color-coding the wires).

[0023] A surface of the wire holder may have a plurality of free-standing (i.e., spaced-apart) projections. Each projection may extend perpendicular to the surface of the wire holder. The wires may be held or retained between the projections (e.g., elastically clamped and / or frictionally engaged). The projections may be aligned or arranged in a grid on the surface. The spacing between the projections may correspond to a diameter of the wires.

[0024] Alternatively or additionally, the wire holder may have at least two longitudinal recesses for accommodating the at least two wires. Each wire may be arranged or capable of being arranged individually and spaced apart from one another in the longitudinal recesses.

[0025] The wires can be accommodated or receivable in the longitudinal recesses in the longitudinal direction (of the wires and / or the longitudinal recesses).

[0026] Each of the at least two longitudinal recesses can be rectilinear. Alternatively or additionally, the at least two longitudinal recesses can be parallel to each other and / or without intersections. The longitudinal recesses can extend in the longitudinal direction or define it.

[0027] By means of the longitudinal recesses (or projections), embodiments of the wire holder can arrange the wires in a plane and / or parallel to one another, or hold them pre-sorted. Alternatively or additionally, embodiments of the wire holder can accommodate (i.e., hold) the wires individually and release them individually (i.e., the wires can be removed individually).

[0028] The wire holder can be designed to positively receive the wires transversely to one (or the aforementioned) surface of the longitudinal recesses in an undeformed state (i.e., the closed state) of the wire holder. Alternatively or additionally, the wire holder can be designed to release the wire received in the (e.g., respectively bent) longitudinal recess in a bent-open state (i.e., the open state) of one of the longitudinal recesses.

[0029] The wire holder can be deformable (e.g., plastically, elastically, or flexibly) with respect to each of the longitudinal recesses into a bent-open state (i.e., the open state) for removing the wire accommodated in the respective longitudinal recess. For example, in the open state of one of the longitudinal recesses, the bending axis can be parallel to the bent-open longitudinal recess.

[0030] Due to the parallel longitudinal recesses, the wire holder can be more flexible perpendicular to the surface of the longitudinal recesses and perpendicular to the longitudinal recesses (i.e., in a bending axis parallel to the longitudinal directions) than perpendicular to the surface of the longitudinal recesses and parallel to the longitudinal recesses (i.e., in a bending axis perpendicular to the longitudinal directions). In other words, the wire holder can be flexible in the bending direction of the open state for removing the held wires. This anisotropic bending elasticity of the wire holder, caused by the parallel longitudinal recesses, can enable intuitive use of the wire holder when bending open the longitudinal recesses.

[0031] Each wire accommodated in a respective longitudinal recess of the wire holder can be connected to the wire holder in a form-fitting and / or frictional manner transversely to the longitudinal direction (e.g., perpendicular to the surface of the wire holder). Furthermore, the form-fitting connection can be reversibly released by (preferably elastic) deformation of the wire holder (i.e., bending it open).

[0032] An elastic deformation of the wire holder when bending open (one or more) of the longitudinal recesses can allow the user to concentrate on processing the wire just removed, while the wire holder closes automatically (ie returns to the undeformed closed state).

[0033] Plastic deformation of the wire holder when bending open (one or more) of the longitudinal recesses can allow the user to temporarily remove a wire or a group of wires for processing and then place them back into the already bent-open longitudinal recess(es) without using any hands. Alternatively or additionally, the wires contained therein can be re-sorted when two or more longitudinal recesses are plastically bent open.

[0034] Each of the at least two longitudinal recesses can be a general cylinder with a non-closed guide curve. The guide curve can be interrupted (i.e., begin and end) at the surface of the wire holder containing the recesses. The longitudinal axis of the general cylinder can be parallel to the surface of the wire holder.

[0035] Alternatively or additionally, each of the at least two longitudinal recesses can have a rectangular or any polygonal shape with an open point or an open line. For example, in the closed state, when no bending force acts on the wire holder, the surface with the longitudinal recesses can appear completely closed if the cross-sectional shape has an open point, or partially open if the longitudinal recesses have an open line.

[0036] Alternatively or additionally, the surface of the wire holder, which has the longitudinal recesses, can be flat (optionally with narrow open lines) or curved (e.g. multiply curved) (optionally with narrow open lines) in the closed state.

[0037] Each of the at least two longitudinal recesses can be a shell surface corresponding to the general cylinder as a recess in the surface of the wire holder.

[0038] Each of the at least two longitudinal recesses of the system according to the device aspect extends from a first end face of the wire holder to a second end face of the wire holder opposite the first end face.

[0039] An opening in each of the first end faces and second end faces may correspond to a cross-section of the longitudinal recess. For example, the opening in each of the first and second end faces corresponds to the guide curve of the general cylinder and / or a portion of the cross-section of the core.

[0040] The first end face may be a front side and the second end face may be a back side of the wire holder.

[0041] The at least two longitudinal recesses can have identical cross-sections and / or equal transverse dimensions. Alternatively, the longitudinal recesses can have different transverse dimensions to accommodate cables with different cross-sections.

[0042] The wire holder of the system according to the device aspect is movable along the wires, while the wires are accommodated in the longitudinal recesses.

[0043] The wires can slide in the longitudinal recesses. This allows the sorting of the wires to be maintained by the wire holder, while moving the wire holder at the free end creates space for labeling and / or terminating the wires. Alternatively or additionally, the wire holder can be used to untangle the wires of a connecting cable.

[0044] The wire holder (for example of the system according to the device aspect or the use according to the method aspect) may further comprise a label that is spatially associated with each longitudinal recess or each received wire.

[0045] The label may include a number and / or color coding.

[0046] In a first variant, the labeling can be arranged on the surface of the wire holder having the longitudinal recesses. In a second variant, the labeling can be arranged on the first end face and / or the second end face of the wire holder (which includes the open ends of the longitudinal recesses). This means that the labeling can be arranged on a rear side of the wire holder that is parallel to the front side and / or opposite the front side. For example (in the first or second variant), the labels can each be arranged on a web of the wire holder between adjacent longitudinal recesses or next to each longitudinal recess. In a third variant, the labeling can be arranged on a rear side of the wire holder that is opposite the surface or the longitudinal recesses. This has the advantage that a smooth surface enables better legibility of the label.The third variant can be advantageously combined with a transparent plastic, because then the label and the wire are visible at the same time (for example, overlapping).

[0047] In each variant, the inscriptions can be arranged on a self-adhesive or removable label, or the wire holder can have a label holder for receiving a labeled label. Or (in each variant) the plastic of the wire holder can be inscribed directly. For example, the inscriptions can be created by laser inscription, e.g. by engraving (i.e. removing the plastic to create an engraving), foaming (i.e. brief exposure to heat creates gas bubbles that remain trapped in the cooling plastic), color change (e.g. a light color change can be achieved by destroying color pigments in dark plastics, or dark inscriptions can be achieved by carbonization, or a light color change can be achieved by destroying color pigments in dark plastics) or printing (i.e. applying color, e.g. ink).

[0048] The wire holder (according to the device aspect or the method aspect) can be designed in multiple parts. Alternatively or additionally, the wire holder can comprise a first part, which has the at least two longitudinal recesses, and a second part, which is or can be releasably connected to the first part in a form-fitting and / or friction-locking manner.

[0049] All of the above features may apply to at least one part of the multi-part wire holder (e.g., the first part and / or the second part).

[0050] The first part can be a base part (also called a base piece or lower part), and the second part can be a counterpart (also called an upper part) to the base part. The base piece and the counterpart can be two completely detachable and reversibly connectable parts of the wire holder. This means that the wire holder can be reversibly divided into a base piece and a counterpart.

[0051] The first part and the second part of the system according to the device aspect are identical or symmetrical to each other.

[0052] Since the counterpart is structurally identical or symmetrical to the base part, the counterpart and base part can advantageously be manufactured using the same mold (e.g. by injection molding) or from a single strand (e.g. by extrusion). Alternatively, the base part and counterpart can have different designs that fit into one another. For example, the counterpart can have no longitudinal recesses. Alternatively or additionally, the base part and the counterpart can have corresponding elements of a mechanical snap connection (e.g. clip connections with the corresponding elements of a locking lug and locking recess). For example, the elements of the snap connection can be arranged on the first and second end faces or laterally next to the longitudinal recesses. Alternatively or additionally, the counterpart (e.g. only) can have a labeling field with the label.

[0053] The wire holder of the system according to the device aspect is transparent, or the first part and / or the second part are transparent.

[0054] By making the wire holder or part of it transparent (to visible light), the marking and the associated wire can be visible together. The first part and / or the second part can include the markings.

[0055] One method aspect relates to the use of a wire holder for the (e.g., pre-sorted) arrangement of wires of a connecting cable. The use comprises providing a wire holder with one or more of the features of the device aspect mentioned herein. The use further comprises receiving the individual wires of the connecting cable in one of the longitudinal recesses of the wire holder.

[0056] The wire holder can serve as an assembly aid, which is attached before the cable assembly and / or connection, or it can remain attached to the cable assembly (for example, only) during the assembly and / or connection process. The wire holder can remain attached to the cable assembly after the connection (for example, for later re-clamping of the wires) or be removed.

[0057] The use of the wire holder according to the method aspect can further comprise assembling and / or connecting the individual wires. The respective wire can be removed from the wire holder and / or the wire holder can be moved along the wires. Connecting can also be referred to as laying on.

[0058] The assembly may include labeling the individual wires (for example based on the labeling of the wire holder).

[0059] The invention will be explained in more detail below with reference to the drawings using preferred embodiments. In particular, further details of embodiments of the technology are described with reference to the accompanying drawings. They show: Fig. 1 a schematic perspective view of a first embodiment of a system for wired signaling with a connecting cable of a device and a wire holder for receiving individual wires at the free end of the connecting cable; Fig. 2 a schematic perspective view of a second embodiment of a system for wired signaling with a connecting cable of a device and a wire holder for receiving individual wires at the free end of the connecting cable; Fig. 3 a schematic perspective view of a third embodiment of a system for wired signaling with a connecting cable of a device and a wire holder for receiving individual wires at the free end of the connecting cable; Fig. 4 is a schematic perspective view of a fourth embodiment of a system for line-based signaling with a connecting cable of a device and a wire holder for receiving individual wires at the free end of the connecting cable, which can be combined with any of the first to third embodiments; and Fig. 5 a schematic block diagram of method steps of using an embodiment of the wire holder in an exemplary sequence.

[0060] The invention and the technical environment are explained in more detail below with reference to the figures. It should be noted that the invention is not intended to be limited by the exemplary embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and combine them with other components and findings from the present description and / or figures. In particular, it should be noted that the figures and in particular the proportional dimensions shown are only schematic. The same reference symbols designate the same or functionally equivalent objects, so that explanations from other figures can be used as a supplement if necessary.

[0061] Fig. Figure 1 schematically shows a perspective view of a first embodiment of a system 300 for wired signaling. The system 300 comprises a connecting cable 200 (shown here only at the free end) of a device and a wire holder 100 for receiving individual wires 202 at the free end of the connecting cable 200.

[0062] The wire holder 100 may have at least two longitudinal recesses 102 for receiving the at least two wires 202. For simplicity and clarity, the wires 202 are depicted here as simple cylinders, although they may have other (or mutually different) shapes. Fig. 1 shows, by way of example, the approximately circular cross-sectional shape of the quasi-cylindrical longitudinal recesses 102, which can be closed along a contact line or open along a gap (which results in the wire holder 100, in the closed state, having a narrow open line on the surface with the longitudinal recesses 102). Furthermore, Fig. 1 shows, by way of example, several webs on the surface of the wire holder between the longitudinal recesses 102.

[0063] For the sake of simplicity and clarity, Fig. 1 and in the following figures, the diameters of the wires 202 are shown in small letters in order to distinguish them from the inner walls of the longitudinal recesses 102, although they may have different diameters, e.g., the same size or even larger.

[0064] The wires 202 may originate from a single connecting cable 200 (the section with the sheath is not shown in the figures). The section or the opposite end of the connecting cable gathers the wires 202 together in a sheath (e.g., a cable sheath).

[0065] The wire holder 100 can be made of elastic material. The wire holder 100 can be flexible in all directions. The wire holder 100 can be flexible in the longitudinal direction 10 of the wire 202 and transversely to the longitudinal direction of the wire 202 (i.e., in the transverse direction 20). The flexibility of the wire holder 100 transversely to the longitudinal direction 10 of the wires 202 (i.e., in the transverse direction 20) can be greater than the flexibility of the wire holder 100 in the longitudinal direction 10 of the wires 202 (e.g., due to the special shape of the wire holder 100 with the longitudinal recesses 102). The flexibility is in Fig. 1 and in the following figures schematically represented by curved arrows.

[0066] The wires 202 can be received (e.g., inserted, pushed in, or pulled in) through the transverse opening of the longitudinal recess 102 (i.e., in the first end face 104 or the second end face 106) into the longitudinal recesses 102 of the wire holder 100, e.g., by a force parallel to the longitudinal direction 10 of the longitudinal recess 102.

[0067] Alternatively or additionally, the wires 202 can be received into the longitudinal recesses 102 of the wire holder 100 via the longitudinal opening of the longitudinal recess 102 on the surface of the wire holder 100 (e.g., inserted by a force perpendicular 30 to the longitudinal direction 10 of the wire holder 100).

[0068] Alternatively or additionally, the wires 202 can be received (e.g., inserted) into the longitudinal recesses 102 of the wire holder 100 via the longitudinal opening of the longitudinal recess 102 on the surface of the wire holder 100. For example, wires 202 can be pressed in, e.g., by applying a force perpendicular to the longitudinal direction 10 of the longitudinal recesses 102 of the wire holder 100, i.e., in the direction 30 shown. Alternatively or additionally, the wire holder 100 can be bent into the open state perpendicular to the longitudinal direction 10 of the longitudinal recesses 102, i.e., in the transverse direction 20. As a result, the longitudinal opening of the longitudinal recess 102 can be opened or opened wider than in the closed state. For example, in the open state, the longitudinal opening (of one or more) of the longitudinal recesses 102 is wider than a diameter of the wires 202.

[0069] Each of the longitudinal recesses 102 can accommodate (e.g. contain) one (preferably a maximum of one) wire 202 or remain without wire 202.

[0070] Fig. Figure 2 schematically shows a perspective view of a second embodiment of the system 300. Fig. 2 shows that the surface appears partially open in the closed state of the wire holder 100. Fig. Figure 2 shows, by way of example, the inscription on the surface of the wire holder 100 encompassing the longitudinal recess 102. The inscription may include letters and / or numbers and / or colors or other patterns. The inscription may be removable or permanent.

[0071] Fig. 3 schematically shows a perspective view of a third embodiment of the system 300. Fig. 3 shows that in the closed state of the wire holder 100 the surface may be partially open, preferably with a gap width that is smaller than the diameter of the wires 202. Fig. 3 shows an example of the labeling (e.g. colors and / or patterns) on the surface of the wire holder 100 comprising the longitudinal recess 102.

[0072] Fig. 4 schematically shows a perspective view of a fourth embodiment of the system 300. Fig. Figure 2 shows that the wire holder 100 is constructed in multiple parts. The wire holder 100 may comprise a first part 110 (e.g., lower part) and a second part 120 (e.g., upper part). Fig. 4 shows the first part 110 and the second part 120 of the wire holder 100 in an exemplary fully released state.

[0073] Alternatively or additionally, the first part 110 of the wire holder 100 may have fewer longitudinal recesses 102 than the second part 120 of the wire holder 100. Alternatively or additionally, the first part 110 of the wire holder 100 may have more longitudinal recesses 102 than the second part 120 of the wire holder 100. Alternatively or additionally, the first part 110 and the second part 120 of the wire holder 100 may have the same number of longitudinal recesses 102.

[0074] The first part 110 and the second part 120 of the wire holder 100 can be symmetrical to each other.

[0075] The second part 120 and / or the first part 110 of the wire holder 100 may be made of transparent and / or semi-transparent material.

[0076] Fig.5 teaches a schematic block diagram of the method steps in sequence. Step 402 comprises providing a wire holder 100 that includes one or more of the features of system 300. This is followed, in step 404, by receiving the individual wires 202 of the connecting cable 200 in one of the longitudinal recesses 102 of the wire holder 100. Optionally, in steps 406, 408, individual wires 202 are assembled and / or connected, wherein the respective wire 202 is removed from the wire holder 100 and / or the wire holder 100 is displaced along the wire 202 far enough from the end that the end of the wire 202 can be freely handled.

[0077] Many advantages of the present invention are apparent from the foregoing description beyond the specific embodiments, and it will thus be apparent to those skilled in the art that various changes in form, construction, materials, and arrangement of elements are possible within the scope of the invention. Consequently, the invention is not limited to the disclosed embodiments, but includes all embodiments falling within the scope of the appended claims. List of reference symbols 100 wire holders 102 Longitudinal recess 104 First frontal surface 106 Second frontal surface 110 First part of the wire holder 120 Second part of the wire holder 10 Longitudinal direction of the wire holder 20 Transverse direction of the wire holder 30 Transverse direction of the surface of the wire holder 200 connection cable 202 Wire of the connecting cable 300 system with connecting cable and wire holder 400 Using the wire holder 402 Providing the wire holder 404 Picking up veins 406 Preparing the wires 408 Connecting the wires

Claims

[1] A system (300) for line-based signaling, comprising: a connecting line (200) of a device, wherein the connecting line (200) comprises at least two wires (202) for signaling, wherein in a section of the connecting line (200) the wires (202) are arranged in a sheath of the connecting line (200), and wherein at a free end of the connecting line (200) the wires (202) are provided outside the sheath for connection to the device; and a wire holder (100) for holding the individual wires (202) at the free end of the connecting cable (200). [2] System (300) according to claim 1, wherein the wire holder (100) is made of a flexible and / or elastic plastic, optionally of an elastomer, preferably of silicone. [3] System (300) according to one of claims 1 or 2, wherein the wire holder (100) is formed in one piece. [4] System (300) according to one of claims 1 to 3, wherein the wire holder (100) for receiving the at least two wires (202) has at least two longitudinal recesses (102), in each of which a wire (202) is arranged or can be arranged individually and spaced from one another. [5] System (300) according to claim 4, wherein the wire holder (100) is designed to receive the wires (202) transversely to a surface of the longitudinal recesses (102) in a form-fitting manner in an undeformed state of the wire holder (100), and / or to release the wire (202) received in the bent-open longitudinal recess (102) in a bent-open state of one of the longitudinal recesses (102). [6] System (300) according to 4 or 5, wherein each wire (202) received in a respective longitudinal recess (102) is connected to the wire holder (100) in a form-fitting and / or friction-fitting manner transversely to the longitudinal direction (10). [7] System (300) according to one of claims 4 to 6, wherein each of the at least two longitudinal recesses (102) extends from a first end face (104) of the wire holder (100) to a second end face (106) of the wire holder (100) opposite the first end face (104). [8] System (300) according to one of claims 4 to 7, wherein the wire holder (100) is displaceable along the wires (202) while the wires (202) are received in the longitudinal recesses (102). [9] System (300) according to one of claims 4 to 8, wherein the wire holder (100) further comprises a label spatially associated with each longitudinal recess (102) or each received wire (202). [10] System (300) according to one of claims 1 to 9, wherein the wire holder (100) is formed in several parts, and / or wherein the wire holder (100) comprises a first part (110) which has the at least two longitudinal recesses (102), and a second part (120) which is or can be connected to the first part in a form-fitting and / or friction-locking manner. [11] System (300) according to claim 10, wherein the first part (110) and the second part (120) are identical or symmetrical to each other. [12] System (300) according to one of claims 1 to 10, wherein the wire holder (100) is transparent, or the first part (110) and / or the second part (120) are transparent. [13] Use (400) of a wire holder (100) for the sorted arrangement of wires (202) of a connecting cable (200), comprising: Providing (402) a wire holder (100) having one or more of the features of claims 1 to 12; and Receiving (404) the individual wires (202) of the connecting cable (200) in one of the longitudinal recesses of the wire holder (100). [14] Use (400) of the wire holder (100) according to claim 13, further comprising: Assembling (406) and / or connecting (408) the individual wires (202), wherein the respective wire (202) is removed from the wire holder (100) and / or the wire holder (100) is displaced along the wires (202).

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