摘要:
The invention relates to an access control device, in particular for a control cabinet system, having a central unit (10), which is designed to receive and evaluate access authorization data stored on personal transponders (20) and to output release signals via a wireless signal transmission link (11) and to release a relevant interlocking unit (40), and which has an authentication device with a testing stage in which comparison data for testing the received access authorization data for access authorization is present. Increased security is achieved in that, in addition, at least one input station (30) having an input unit (31) is present, which is or can be used to establish a wireless data transmission connection (13) to the central unit (10) for the transmission of input data that is different from the access authorization data, the authentication device is designed to operate in two stages and has a further testing stage, which is designed for the direct or indirect allocation of the input data to the access authorization data and to check agreement between the access authorization data and the input data with regard to the access authorization, and the central unit (10) is designed to output the release signals when the access authorization has been established after checking by means of the further testing stage.
摘要:
The invention relates to a switchgear cabinet control system and a monitoring system comprising at least one switchgear cabinet (G1 ... Gn), a control and monitoring device (US, US1) and an operating and information system which comprises user components and data processing, data transferring and storage components which can be remote controlled, in addition to a user guiding device and a configuration device. An individually adapted, simple to operate system is obtained in such a manner that the operating and information system also comprises a planning device which is used to selectively combine at least one switchgear cabinet comprising switchgear cabinet components to an individual user system (NA, NA1) in a provider device (RS), wherein offer-related data of various switchgear cabinets (GI ... Gn) and switchgear cabinet components are contained. A selected arrangement of planning data which is related to at least one switchgear cabinet and switchgear cabinet components can be extracted therefrom.
摘要:
The invention relates to a regulation method for an electrical enclosure cooling device, which has a refrigeration machine and a heat pipe arrangement. The method has the following steps: - measuring a current electrical enclosure internal temperature and determining a target temperature for the electrical enclosure internal temperature, wherein the electrical enclosure internal temperature and the target temperature form input signals of a regulator for actuating the electrical enclosure cooling device, and the regulator outputs a control signal for determining manipulated variables of the refrigeration machine; - determining the regulator control signal as a measurement variable which is proportional to the respective current required cooling power; - measuring the electrical enclosure surrounding temperature and determining a respective energy efficiency for the refrigeration machine and the heat pipe arrangement either in the event that the required cooling power is to be provided by the refrigeration machine or in the event that the required cooling power is to be provided by the heat pipe arrangement; and - selecting and activating the coolant circuit which can provide the required cooling power with greater energy efficiency.
摘要:
The invention relates to a control cabinet monitoring device, comprising a control device which is connected via a field bus (20) to various sensors and/or actuators for monitoring and controlling various control cabinet functions, such as climate control, moisture control and access control. Flexible adaptation possibilities for different applications of control cabinets are offered in that at least one part of the sensors and/or actuators are direct connection sensors (30) and/or direct connection actuators (30'), each having a dedicated bus coupling circuit (300) and being coupled by same to the field bus (20), and the control device has an initialization unit or can be connected to such a unit, via which the direct connection sensors (30) and/or the direct connection actuators (30') can be initialized before startup and automatically addressed and are subsequently connected via the control device for the exchange of data for operating purposes on the basis of individually allocated addresses.
摘要:
The invention relates to a cooling device, in particular for cooling components housed in a switchgear cabinet, having a first cooling fan for blowing air from the switchgear cabinet through a first heat exchanger, and a second cooling fan for blowing ambient air through a second heat exchanger, the cooling device being characterised in that it further comprises a power supply (1) with a step-up and/or step-down converter (2) connected via a rectifier (3) to a wide-range input (4) for single-phase or multiphase alternating voltage, and charges a capacitor (5) to a DC link voltage higher or lower than a mains voltage across the wide-range input (4), a mains power pack (6) of at least one of the two cooling fans being connected in parallel to the capacitor (5). The invention further relates to the use of such a cooling device and to a corresponding method for operating the cooling device.
摘要:
The invention relates to a monitoring unit for the operation of control cabinet devices, particularly a climate control device (2), having a detection unit for the operating state data of the control cabinet devices, a monitoring unit (20) comprising an analysis unit, and a display unit (24) for displaying informational data on the control cabinet devices for a verifying person. A reliable, clearly laid-out detection of operating states is achieved in that the analysis unit has a collection device for different physical operating state data over a previous time duration influencing the function of the control cabinet device, and a calculating device for the operating state data, and that informational data, which is derived from the operating state data while calculating by way of the calculating device, is provided to the display device (24) for the verifying person before any malfunction occurs.