DE19757854A1 - Low voltage plant system for distribution of electric power and process control of geometrically spaced machines, plants and processes e.g. for manufacturing process in automobile industry - Google Patents

Abstract

The main distributor or transformer station has a power bus (2) for supplying the machines (3), the plant and-or the processes, is connected with electric power. At least one control bus (4) is connected in parallel to the supply, and is also connected with the machines, the plant and-or the processes. The control bus is integrated in the power bus. At the machines (3) to be controlled, essentially still remain only sensors and-or actuators, in such a manner, that the control of the machines (3), the plant and the process is separated. In the vicinity of the machines to be controlled and-or protected, function modules (5) are provided and assembled at the power and control buses made up singly or in assemblies.

Description

The invention relates to a low-voltage system according to the preamble of Claim 1.

Machines, plants and processes are known through so-called MCC distributors, or low-voltage switchgear with plug-in technology with electrical supply and control. The various load current and control lines must be connected to the individual motors, sensors and actuators or other components become. The disadvantage is the large number of lines, the amount of wiring and the relatively long connections.

Since very many possible combinations of the slide-in modules are required, the Fulfillment of the EMC resistance requires a lot of effort and series production difficult.

From EP 0 762 584 A1 a control cabinet in modular construction is known, the one Fieldbus system and standardized modules. Series production is indeed simplified, but the wiring effort is for geometrically extensive Machines or the like continue to be high. Such distributors are also called as a punk distributor.

From EP 0 670 197 A2 a busbar trunking system has become known Conveyor line is used, with an energy and a control bus are available. The wiring effort in the area of the conveyor line is thus reduced. At Use of such a busbar trunking does not, however, eliminate the actual one Main distributor. Other disadvantages of the prior art described above remain still received. Such distributors are also called line distributors.

The object of the invention is a low-voltage system according to To provide the preamble of claim 1, in which the installation effort is reduced and mass production is simplified.

The object of the invention is achieved by the characterizing features of the claim 1 solved, while in the subclaims particularly advantageous developments of Invention are marked.

It is particularly advantageous if the function modules have standard sizes and have standard functions and are parameterizable, which means that Series production is further simplified.

If the function modules have a standardized pin assignment, the result is a clear limitation of incorrect installations.

It is particularly advantageous if the low-voltage system consists of one main distributor connected to a transformer station, which in the essential only central protection components for overcurrent and Has short-circuit protection and / or arc protection, because in many cases the space for the point distributor can be dispensed with.

It is also particularly advantageous if the low-voltage system from an energy bus connected to a transformer station without one Main distributor as a punk distributor, exists because there are no special switch rooms can be.

Based on the drawing, in which an embodiment is shown, the Invention, further refinements and improvements of the invention and others Advantages are described and explained in more detail.

It shows

Fig. 1 is a schematic representation of a low-voltage conditioning system for the control and power supply of a machine, a machine or process,

Fig. 2 is a schematic diagram of a low voltage equipment system with a redundant power supply bus for control and power supply of a machine, installation or process

Fig. 3 is a schematic diagram of a low-voltage system before automation of a process step and

Fig. 4 is a schematic diagram of a low-voltage system system after post-automation of a process step.

The invention is based on the knowledge that a basically completely decentralized MCC distributor offers considerable advantages over a central solution.

Fig. 1 shows a low-voltage system 1 for the distribution of electrical energy and process control of geometrically extended machines 3 , systems and processes, consisting of an energy bus 2 connected to a main distributor for supplying the machines 3 , systems and processes with electrical energy, in parallel for this purpose there is at least one control bus 4 which is also connected to the machines 3 , the system or the process.

The control bus 4 is integrated in the power bus 2 .

Essentially, only sensors and / or actuators remain on the machines 3 to be controlled, the control being separate from the machines 3 , the system and the process.

Function modules 5 are present in the vicinity of the machines 3 to be controlled and / or protected, which are combined on the power bus 2 and the control bus 4 in plug-in or plug-in modules.

The function modules 5 have standard sizes and standard functions and are parameterizable. Furthermore, the function modules 5 have a standardized connector assignment.

Devices and functions of MCC distributor racks are integrated in the function modules 5 .

The low-voltage system 1 consists either of a main distributor connected to a transformer station, which essentially has only central protective components for overcurrent and short-circuit protection and / or arc protection, or the transformer station is directly connected to the power bus 2 without a main distributor as a point distributor connected.

The low-voltage system 1 can be implemented in different degrees of protection.

The low-voltage system 1 can be used in a manufacturing process, in a car body line or in a motor line, in the automotive industry.

The machine 3 is connected to a leaving wiring 9 and with bus and / or control lines 10 to the function modules 5 electrically in a relatively short path.

As FIG. 2 shows, a redundant, second, parallel bus 11 can be provided for control and / or energy supply in particularly important process steps. Process step 13 is connected both to the function module 5 of a main bus 12 and to a redundant function module 14 of the redundant bus 11 .

The redundant bus 11 carries only a fraction of the energy of the main bus 12 and is dimensioned accordingly. The nominal current of the redundant bus 11 can, for. B.150 A, while that of the main bus 12 z. B. has a value of 500 A.

FIGS. 3 and 4 show the principle by way of low voltage equipment system 1 before and after a Nachautomatisierung a process step. A manual work station 6 , which was previously operated by a person 8 , can easily be replaced by an automated station 7 .

Function modules for certain and special functions, such as B. MCC inserts, grouped into plug-in or plug-in modules become.

With extensions or changes, adjustments are with minimal effort possible.

The modules can be used for other configurations of the machine, the system or the Processes with the same functional requirements can be reused. Geometric enlargements and reductions are changed Functional content of the modules, in contrast to MCC distributors, within wide limits possible.

Series production is achieved through standard sizes and functions simplified.  

On site, especially if the electrical connections are pluggable Wiring effort significantly reduced. The connection lengths for cables, Control lines and BUS systems are reduced to a minimum.

The invention results in a clear increase in clarity, which greatly simplifies service and troubleshooting.

The invention makes it possible to use the system as a factory-made system to carry out, which results in an increase in quality in the EMC resistance. This can no longer be adversely affected by the individual installation on site.

Such a system can be used in a particularly advantageous manner and with one high investment protection equip machines, plants, and processes that have a high Require flexibility to adapt and change.

With appropriate degrees of protection, the system is for every environment, too can be used in sections.

The new system is a combination of line and point distributors, with its Geometry that corresponds to a line distributor and the function that corresponds to one Punt distributor is.

The "tempering" function can be present in a function module. This repeats itself in every injection molding machine. For larger spray shops, this system would be staggered according to performance classes Module possible as a series product.

The machine manufacturer's special know-how could then be integrated into one Machine manufacturer software.  

Reference list

1

Low voltage system

2nd

Power bus

3rd

machinery

4th

Control bus

5

Function modules

6

Workplace

7

station

8th

person

9

Outgoing wiring

10th

Control lines

11

Second bus

12th

Main bus

13

Process step

14

Redundant function module

Claims (13)

1. Low-voltage system ( 1 ) for the distribution of electrical energy and process control of geometrically extended machines ( 3 ), systems and processes, characterized in that
that the main distributor or a transformer station is connected to an energy bus ( 2 ) for supplying the machines ( 3 ), the systems and / or the processes with electrical energy, at least one control bus ( 4 ) being present in parallel, which is also connected to the machines ( 3 ), the system and / or the process are connected,
that the control bus ( 4 ) is integrated in the power bus ( 2 ),
that essentially only sensors and / or actuators remain on the machines ( 2 ) to be controlled, such that the control is separate from the machine ( 2 ), the system and the process, and
that in the vicinity of the machines to be controlled and / or protected ( 3 ) there are function modules ( 5 ) which are combined on the energy and control bus ( 2 , 4 ) in plug-in or plug-on modules. 2. Low-voltage system according to claim 1, characterized in that the functional modules ( 5 ) have standard sizes and standard functions. 3. Low-voltage system according to claim 1 or 2, characterized in that the function modules ( 5 ) are designed to be parameterizable. 4. Low-voltage system according to one of the preceding claims, characterized in that the functional modules ( 5 ) have a standardized pin assignment. 5. Low-voltage system system according to one of the preceding claims, characterized in that the functional modules ( 5 ) have devices and functions of MCC distributor inserts. 6. Low-voltage system according to one of the preceding claims, characterized in that the low-voltage system ( 1 ) from a main distributor connected to a transformer station, which essentially only has central protective components for overcurrent and short-circuit protection and / or arc protection. 7. Low-voltage system according to one of the preceding claims, characterized in that the low-voltage system consists of an energy bus connected to a transformer station ( 2 ) without a main distributor, in the form of a point distributor. 8. Low-voltage system according to one of the preceding claims, characterized in that the low-voltage system ( 2 ) can be carried out in different degrees of protection. 9. Low-voltage system according to one of the preceding claims, characterized in that a redundant, second, parallel bus ( 11 ) for control and / or power supply of at least one process step ( 13 ) is present, the process step ( 13 ) with both the function module ( 5 ) of a main bus ( 12 ) and a redundant function module ( 14 ) of the redundant bus ( 11 ). 10. Low-voltage system according to one of the preceding claims, characterized in that a redundant bus ( 11 ) carries only a fraction of the energy of the main bus ( 12 ) and is dimensioned accordingly. 11. Use of a low-voltage system ( 1 ) according to one of the preceding claims in a manufacturing process in the automotive industry. 12. Use of a low-voltage system ( 1 ) according to one of the preceding claims in a body line in the automotive industry. 13. Use of a low-voltage system ( 1 ) according to one of the preceding claims in a motor road in the automotive industry.