System for controlling and / or monitoring components of an air conditioning system, a fire / smoke protection system and / or a smoke and heat extraction system of a building

Abstract

System for controlling and / or monitoring components (1) of an air-conditioning system, a fire / smoke protection system and / or a smoke and heat extraction system of a building, wherein the components (1) each have a drive (3) controllable by the system, wherein the system has an AS-i controller (4) with an AS-i power supply unit (5) which is connected to the drives (3) of the components (1) by means of an AS-i line (7) designed as a bus line, wherein the AS-i line (7) has at least two parallel segments (8), to each of which at least one drive (3) of a component (1) is connected, and wherein each segment (8) is assigned its own safety device (9) which is interposed between the AS-i controller (4) and the respective segment (8), characterized in that at least one safety device (9), preferably all safety devices (9),is (are) designed for bus segmentation as an electronically operating AS-i line separator.,

Description

[0001] The invention relates to a system for controlling and / or monitoring components of an air conditioning system, a fire / smoke protection system and / or a smoke and heat extraction system (RWA) of a building, wherein the components each have a drive that can be controlled by the system, wherein the system has an AS-i controller with an AS-i power supply unit that is connected to the drives of the components by means of an AS-i line designed as a bus line, wherein the AS-i line has at least two parallel segments, to each of which at least one drive of a component is connected, and wherein each segment is assigned its own safety device that is interposed between the AS-i controller and the respective segment.

[0002] In such a system, all drives are connected to the AS-i controller via a single AS-i cable designed as a bus cable, i.e. a single, usually two-wire, cable. Both data transmission and the power supply to the drives are carried out via the AS-i cable. In the AS-i 3 standard, the AS-i cable can have multiple segments. A segment thus represents a section of the AS-i cable. In this respect, a segment is comparable to a line to which at least one drive of a component is connected. In a fire protection system, a segment could, for example, be a fire protection zone.

[0003] The individual segments must be able to be evaluated separately, i.e. if a component fails due to a short circuit or a wire break in one segment, the other segments must remain functional. To ensure this, each segment is preceded by its own safety device, which disconnects the affected segment in the event of a short circuit in that segment. In one known system, the safety device is designed as a combination of a repeater and an AS-i power supply. In a system consisting of three segments, for example, a total of three safety devices are required, each comprising a repeater and an AS-i power supply. This means that material costs are high due, among other things, to the number of combinations of repeaters and AS-i power supplies required.

[0004] The object of the invention is to avoid the aforementioned disadvantages and to provide a system which has a smaller number of components in order to reduce material costs.

[0005] This object is achieved in that at least one safety device, preferably all safety devices, is (are) designed as an electronically operating AS-i line separator for bus segmentation. An electronically operating AS-i line separator is an electronic switch which is installed in the AS-i line before each segment for bus segmentation, i.e. for short-circuit protection segmentation. The power supply to the drives of this particular segment as well as the signal transmission from the AS-i controller to the drives of this particular segment and from the drives of this particular segment to the AS-i controller are carried out via an AS-i line separator. The signal transmission is not impaired by the respective AS-i line separator. In the event of a short circuit in a segment, the negative conductor to this segment is separated, so that the short-circuit-free side of the system, i.e.The other short-circuit-free segment(s) can continue to operate. In this respect, in the event of a short circuit or wire break in a segment, only the segment separated by the electronically operating AS-i line separator fails, while the rest of the AS-i line continues to function.

[0006] For example, if the fire protection system comprises three segments connected in parallel, i.e., three fire protection zones, a short circuit in one segment will cause only the segment separated by the AS-i line separator, i.e., the affected fire protection zone, to fail, while the remainder of the AS-i line, i.e., the other two segments (the other two fire protection zones), will continue to function. This allows compliance with normative requirements, such as the failure of only one fire protection zone (segment), with only one AS-i line with bus-powered component drives.

[0007] In the system according to the invention, the AS-i power supply of the AS-i controller provides such a large load current that is required for the control and / or monitoring of all drives in all segments.

[0008] The drives of several components can be connected to at least one segment.

[0009] At least one component can be designed as a fire damper. The fire damper has a damper blade. The position of the damper blade can be changed using the actuator.

[0010] At least one component can be designed as a smoke extraction damper. The smoke extraction damper has a damper blade. The position of the damper blade can be changed using the actuator.

[0011] At least one component can be designed as a volume flow controller. The volume flow controller has a damper blade. The position of the damper blade can be changed using the actuator.

[0012] At least one component can be designed as a smoke extraction damper.

[0013] At least one component can be designed as a volume flow controller.

[0014] In addition, at least one sensor and / or detector, such as a smoke detector, can be connected to at least one segment.

[0015] At least one segment can be connected to a combination of a repeater and an AS-i power supply. This is useful if the length of the respective segment needs to be increased.

[0016] At least one AS-i line separator designed as a safety device can be configured such that the segment assigned to this AS-i line separator is separated at a short-circuit current of 4 A to 6 A, preferably at a short-circuit current of 5 A.

[0017] The following explains an exemplary embodiment of the invention illustrated in the drawing. The single figure shows a system for controlling and / or monitoring components 1 of a smoke and heat extraction system (SHEV) of a building (not shown). Therefore, in the exemplary embodiment shown, the four components 1 are each designed as smoke extraction dampers arranged in an indicated air duct 2, which is part of a building-side ventilation system (not shown in detail). Each component 1 has an electric drive 3 that can be controlled by the system.

[0018] The system also has an AS-i controller 4 with an AS-i power supply 5, which are arranged in a control cabinet 6.

[0019] The AS-i controller 4 is connected to the drives 3 of the components 1 by means of an AS-i cable 7 designed as a bus cable. As can be seen from the figure, in this exemplary embodiment, the AS-i cable 7 has three parallel segments 8, to each of which four drives 3 of four components 1 are connected.

[0020] Each segment 8 is assigned its own safety device 9, which is connected between the AS-i controller 4 and the respective segment 8. Since the AS-i line 7 in the illustrated embodiment has three parallel segments 8, three safety devices 9 are also provided. Each safety device 9 is designed as an electronically operating AS-i line separator for bus segmentation.

[0021] Every electronically operating AS-i line separator is an electronic switch that is installed for bus segmentation, i.e., for short-circuit protection segmentation, upstream of each segment 8 in the AS-i line 7, i.e., between the AS-i controller 4 and the respective segment 8. Such a safety device 9 typically includes a current measuring resistor (shunt) used to determine the current. In the event of an overload, the safety device 9 is triggered, thus disconnecting the affected segment 8.

[0022] For example, if a short circuit occurs in the upper segment 8 in the figure, the negative conductor is separated. This allows the short-circuit-free side of the system, i.e., the two remaining short-circuit-free segments 8 (namely, the middle segment 8 in the figure and the lower segment 8 in the figure), to continue operating without malfunctions. Thus, if a short circuit occurs in the upper segment 8 in the figure, only this upper segment 8 fails, while the rest, namely the middle segment 8 in the figure and the lower segment 8 of the AS-i cable 7, continue to function.

[0023] If, for example, a wire break occurs in the AS-i cable 7 in the upper segment 8 in the figure between the second drive 3 and the third drive 3 (seen from the left), the segment 8 remains fully functional up to the second drive 3, so that the function of the first drive 3 and the second drive 3 (seen from the left) is maintained.

Claims

[1] System for controlling and / or monitoring components (1) of an air-conditioning system, a fire / smoke protection system and / or a smoke and heat extraction system of a building, wherein the components (1) each have a drive (3) controllable by the system, wherein the system has an AS-i controller (4) with an AS-i power supply unit (5) which is connected to the drives (3) of the components (1) by means of an AS-i line (7) designed as a bus line, wherein the AS-i line (7) has at least two parallel segments (8), to each of which at least one drive (3) of a component (1) is connected, and wherein each segment (8) is assigned its own safety device (9) which is interposed between the AS-i controller (4) and the respective segment (8), characterized bythat at least one safety device (9), preferably all safety devices (9), is (are) designed as an electronically operating AS-i line separator for bus segmentation. [2] System according to the preceding claim, characterized by that the drives (3) of several components (1) are connected to at least one segment (8). [3] System according to the preceding claim, characterized by that at least one component (1) is designed as a fire damper. [4] System according to one of the preceding claims, characterized by that at least one component (1) is designed as a smoke extraction damper. [5] System according to one of the preceding claims, characterized by that at least one component (1) is designed as a volume flow controller. [6] System according to one of the preceding claims, characterized by that at least one sensor and / or one detector is (are) connected to at least one segment (8). [7] System according to one of the preceding claims, characterized by that at least one ASi line separator designed as a safety device (9) is set up in such a way that the separation of the segment (8) assigned to this AS-i line separator takes place at a short-circuit current of 4 A to 6 A, preferably at a short-circuit current of 5 A. [8] System according to one of the preceding claims, characterized by that at least one combination consisting of a repeater and an AS-i power supply is connected to at least one segment (8).

Images