SYSTEM COMPRISING COMPONENT CODING

Abstract

A system (1) has a control device (10) with central electronics (11) designed for connection and operation of differently coded electric motors (En), with different motor characteristics (Mn) and/or power classes (Ln), to a device connection (12) of the control device (10). The at least one electric motor (En) is selectable from a number (n) of electric motor (En), that can be connected as intended, has a coding element (Kn). The central electronics (11) have a coding capture device (2) to recognize, via coding element (n), the motor characteristics (Mn) and/or the power class (Ln) of the respective currently connected electric motor (En).

Claims

1.-10. (canceled)

11. A system comprising a control device with central electronics for connection and operation of differently coded electric motors with different motor characteristics and/or power classes to a device connection of the control device; at least one electric motor selectable from a number of electric motors (En) that can be connected as intended; each electric motor that can be connected as intended has a coding element; the central electronics have a coding capture device for recognizing, via the coding element, the motor characteristics and/or the power class (Ln) of the respectively currently connected electric motor.

12. The system according to claim 11 wherein each electric motor has a motor connection line with a connection plug for plugging into the device connection of the control device, and the respective coding element is integrated into the motor connection line or the connection plug.

13. The system according to claim 11, wherein the coding element comprises or is at least one electric structural element.

14. The system according to claim 13, wherein the coding element comprises at least one electrical resistor or is an electrical resistor.

15. The system according to claim 11, wherein the coding capture device comprises an electrical evaluation circuit designed to use a motor-specific current limitation as a function of the connected electric motor.

16. The system according to claim 11, wherein the coding capture device has a current limitation circuit that uses a current limitation depending on the detected coding element, that prevents an over-current above the current limitation.

17. The system according to claim 16, wherein the current limit for the connected electric motor is implemented in that signal contacts of the coding capture device are incorporated into a signal flow loop via at least one line connection having the coding element, and a corresponding switch-off threshold is set by a comparator.

18. The system according to claim 11, wherein each electric motor (En) represents an EC motor that can be commutated through commutation of the central electronics.

19. The system according to claim 11, wherein each electric motor, that can be connected as intended, is an integral drive of a device, particularly of a fan, a pump, a compressor, or an HVAC device.

20. The system according to claim 11, wherein an over-current protection device of the system including at least the central electronics and an electric motor is formed from a primary protection circuit and an auxiliary protection circuit, the primary protection circuit has at least one evaluation circuit for evaluating the coding element (Kn) and is implemented in the central electronics, while the auxiliary protection circuit is implemented separately therefrom in the motor connection line or a connection plug connected to the line, the connection plug has the coding element.

Description

DRAWINGS

[0021] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

[0022] The following is shown:

[0023] FIG. 1 is a schematic view of an exemplary embodiment of a system;

[0024] FIG. 2 is a schematic view of an interface of central electronics;

[0025] FIG. 3 is an exemplary coding element in a motor connection line; and

[0026] FIG. 4 is an evaluation circuit for determining the connected motor type.

DETAILED DESCRIPTION

[0027] The disclosure is explained in more detail in the following with reference to FIGS. 1 to 4. The use of the same reference numerals indicates the same structural and/or functional features.

[0028] FIG. 1 is a schematic overview of an exemplary embodiment of a system 1 according to the disclosure. The shown system 1 has at least one pairing including the control device 10, with the central electronics 11, and one of the electric motors En. The motor En is selectable from the shown number n of differently coded electric motors E1 to En with different motor characteristics M1 to Mn and/or power classes L1 to Ln. The electric motors En each have a connection plug 21 to connect to a device connection 12 of the control device 10 of the central electronics 11.

[0029] According to the disclosure, each of the electric motors En shown can thus be connected to the device connections 12 of the control device 10 of central electronics 11 without manual adaptation of the control, as shown in FIG. 2.

[0030] FIG. 2 shows a schematic view of an interface S of central electronics 11 with the two device connections 12 each for connecting one electric motor En. In addition, further interfaces are shown for establishing further connections to other devices.

[0031] The device connections 12 have at least two signal connections to connect to the signal contacts 14 of the coding capture device 2 that include the evaluation circuit which is shown in FIG. 4.

[0032] Using these signal contact connections 14, a line connection, with the coding element Kn of the connected electric motor En, is placed into a signal flow loop. A corresponding switch-off threshold is set for the power class of the electric motor En connected to the respective device connections 12 by the comparator 15.

[0033] After the connection of the connection plug 21 to the interface of the central electronics 11 in FIG. 2, the signal contact connections 14, that have been open-circuit until that point, are connected via the coding element Kn. The necessary switch-off threshold is set according to the fan type used for the comparator 15 with the assistance of the resistor 16. The output signal A of the evaluation circuit, according to FIG. 4, is used as an alternating signal for a safer switch-off of the commutation end stage.

[0034] FIG. 3 shows an exemplary implementation of a coding element Kn. Each of the electric motors E1 to En shown in FIG. 1, which can be connected as intended, has an individual (specific for this motor type) coding element Kn. The coding element Kn is integrated into the motor connection line 20. The two ends of the cable 20 are accommodated on the connection plug 21. An insulating element 23 is attached about the coding element Kn, as is schematically shown to the left in FIG. 3. The connection of the coding element Kn in this case can be established via one of the conventional connection techniques using, for example, a solder or insulation-displacement connection 24, that is likewise surrounded by an insulating element 23 to establish contact protection, where relevant regulations of low-voltage coordination are considered as relates to the design of the insulating element.

[0035] Using the evaluation circuit shown in FIG. 4, a motor-specific current limitation dependent on the connected electric motor En is implemented, which uses a current limitation specifically for this as a function of the detected coding element Kn, the current limitation preventing an over-current above the current limitation.

[0036] The disclosure is not limited in its design to the aforementioned preferred exemplary embodiments. Rather, a number of variants is conceivable, that would make use of the solution shown even with essentially different designs. As a further advantageous effect, the limit threshold can be set at “zero” in the event of a cable break in the connection line thus switching off the commutation stage. Furthermore, aging effects of the contact transitions have no significant impact on the device. In addition, no separate commutation electronics are necessary for the different components to be commutated, which components contain the auxiliary protection circuit.