Abstract: A system controller is adapted to be integrated into a control network including a plurality of device controllers that communicate through the network via a network specific communication protocol for controlling a plurality of network devices. The system controller includes an application controller which is adapted to be connected to the network and stores a plurality of system points corresponding to a plurality of system variables relating to the network devices. The application controller is adapted to convert the system points into the corresponding system variables, and the corresponding system variables into the system points. At least one client is connected to the network and in communication with the application controller. The client is adapted to send a command and request a report relating to a select system point to and from the application controller.

Abstract: A method of operating a control device having a setpoint value, an error signal, and a control output is disclosed. The error signal is representative of a difference between a controlled variable and the setpoint value, the control output operable to affect the controlled variable. The method includes generating the control output based at least in part on the error signal and holding the control output at a held value independent of the error signal when the error signal is within a dead zone. The method also includes causing an integrating portion within the control device to track the error signal and the held value when the error signal is within the dead zone.

Abstract: In building automation architectures, components may be associated through physical communications paths and at a different level through building automation applications. Building automation applications implement control processes for a building function. Due to changing needs, such as a failure of a physical communications path or the addition or removal of components, the building automation application may be more appropriately performed in a different device. By dynamically positioning or determining a processor for implementing a building automation application, an architecture or network may more optimally control building functions, such as by requiring less user input, more rapid response and/or avoiding building function failures.

Abstract: An apparatus for executing a block program includes a block table listing records corresponding to a plurality of blocks in the block program. A block library is included to hold algorithms associated with the blocks. An executing program selectively processes the blocks in the block program that receive a new input value that is different from a previous input value, in accordance with the associated algorithms in the block library.

Abstract: A building control system, such as an HVAC system, has a field unit incorporating a control panel (a field panel) with a local user interface allowing user selected parameters for collecting trend information when the system detects a change of value for a point in the system or a timed instruction in the memory of the field panel to begin collecting trend data for a point. The resulting trend data collected by the field panel can be uploaded to a workstation in the building control system, where the trend data can be formatted into a report, and then digitally authenticated.

Abstract: A method for converting a balanced valve assembly from a normally open position to a normally closed position, and a method for converting a balanced valve assembly from a normally closed position to a normally open position is shown. The method allows the same balanced valve body to be used with both normally open position and normally closed position by changing the connection of the plug and stem assembly and by replacing the cap and bonnet assemblies.

Abstract: The invention relates to a control system (15) for a burner and a setting-up procedure. The control system (15) controls the air ratio for combustion using the ionisation electrode (16). For calibration, a change is carried out in a first parameter, and the subsequent change in a second parameter is observed. Accurate expected values for the change observed come from stored characteristic data that have been determined in the setting-up procedure, and from taking into account the current combustive content of air and fuel. This allows corrective measures or fault signals to be established.

Abstract: The measuring arrangement contains a measuring cell and a reference cell, respectively, and microphones assigned to these cells, to which microphones an electronic evaluation circuit is connected and in which a subtraction of the signals of the microphones takes place, as well as a radiation source for applying a modulated signal to the measuring cell. The modulation frequency of the radiation source coincides with the resonant frequency of the measuring cell, and the measuring cell and the reference cell are open at at least one end to the gas to and/or aerosol to be detected. The measuring arrangement is used as smoke alarm, gas alarm, fire hazard alarm or as combined smoke and gas alarm, wherein each of the measuring cells is exposed to a radiation of a wavelength at which a relevant substance to be detected is absorbent and an opto-acoustic effect is produced as a result.

Abstract: The invention relates to a device and a method for monitoring burners using an automatic heating machine (1) for controlling or regulating the burner (15), and a temperature controller (5). At least the flow/boiler temperature (T?VL?) is detected and is compared with a predeterminable first maximum flow boiler temperature (T?VLmax1?) by means of the temperature controller (5). The burner (15) is switched off when the flow/boiler temperature (T?VL?) reaches or exceeds the predeterminable first maximum flow/boiler temperature (T?VLmax1?), while the flow/boiler temperature (T?VL?) is compared with a predeterminable second maximum flow/boiler temperature (T?VLmax2?) which is higher than the predeterminable first maximum flow/boiler temperature (T?VLmax1?).

Abstract: A security system utilizes danger sensors (3) and a central unit connected wirelessly to the danger sensors (3). The danger sensors (3) have a communication module (8) which has the same dimensions and same shape for all sensor types, and which is intended to attach the danger sensor (3) to a mounting plate (2). In addition to the communication module (8), the danger sensor (3) contains a detection module (9) where the communication module (8) has a mechanical and electrical/electronic interface with the detection module (9).

Abstract: A security system utilizes danger sensors (3) and a central unit connected wirelessly to the danger sensors (3). The danger sensors (3) have a communication module (8) which has the same dimensions and same shape for all sensor types, and which is intended to attach the danger sensor (3) to a mounting plate (2). In addition to the communication module (8), the danger sensor (3) contains a detection module (9) where the communication module (8) has a mechanical and electrical/electronic interface with the detection module (9).

Abstract: A data storage system includes a database that is configured as a static data file containing static data and a dynamic data file containing dynamic data. The static data file is stored in a static memory device and the dynamic data file is stored in a dynamic memory device. A catalog included in the database defines whether the data is static or dynamic and further defines an arrangement of a set of data fields and data records included in the database. A database manager uses a file system to access the files in a rapid manner using an address pointer and, because the data is stored in files, the data may be accessed remotely without need for additional communication strategies/protocol. To enable editing of the static data, the database manager creates a mirror image of the static data in the dynamic memory where editing may occur. The mirror image of data having the edited data is later returned to the flash memory.

Abstract: In a method for generating a scanning clock signal (S) for scanning an analog signal (Ua) for an analog-to-digital converter (20) operating according to the sigma-delta method, a variable period (T; T*) of the power supply system (PL) is ascertained in time units of a system clock signal (C), and the scanning clock signal (S) is generated by distributing a constant number K of pulses over the ascertained period (T; T*), so that the frequency of the scanning clock signal (S) is an integer multiple of the frequency of the power supply system (PL). The method is essentially able to be carried out by an accumulator unit (4) connected to a counter (3) and makes possible the advantage that during the analog-to-digital conversion a mains hum contained in the analog signal (Ua) is suppressed.

Abstract: In a method of determining air humidity, a corrected moisture signal is calculated for a moisture signal (Hi) ascertained from electrical properties of a capacitive moisture measuring element. In a measuring phase (30) with rising relative air humidity (RH), the corrected moisture signal is the current moisture signal (Hi) increased by a correction value, whereas in a measuring phase (31) with falling relative air humidity (RH) the corrected moisture signal is the current moisture signal (Hi) reduced by a correction value. Depending on the respective properties of the moisture measuring element and the required degree of measuring accuracy, the correction value is constant or is taken into consideration in dependence on the relative air humidity RH. This method provides a higher level of measuring accuracy with a moisture sensor equipped with the moisture measuring element.

Abstract: An apparatus for displaying event information from a building system includes a display device coupled to a processing circuit. The processing circuit is operable to cause the display to display information regarding a building system in a first portion of the display, the information being selectable and changeable by a user. The processing circuit is further operable to cause the display to display, independent of the displayed information in the first portion, an alarm graphic element in a second portion of the display, the alarm graphic element including building system event information.

Abstract: The invention relates to a flame-monitoring device in which an a.c. input voltage (U1) is limited to a voltage limit (U2) by means of a voltage limiter (4). Said voltage limit (U2) is applied to a flame sensing device (7) which operates by means of the rectifying effect of a flame, and through which a current (i) flows, especially when a flame (6) is present. An asymmetric voltage limit (U2) can be defined by said voltage limiter (4), said limit being then applied to the sensing device (7).

Abstract: A method of operating a control device having a setpoint value, an error signal, and a control output is disclosed. The error signal is representative of a difference between a controlled variable and the setpoint value, the control output operable to affect the controlled variable. The method includes generating the control output based at least in part on the error signal and holding the control output at a held value independent of the error signal when the error signal is within a dead zone. The method also includes causing an integrating portion within the control device to track the error signal and the held value when the error signal is within the dead zone.

Abstract: A damper actuator for a ventilation damper serves as both a control device for the ventilation damper and a fire and smoke rated device for the ventilation damper. The damper actuator includes a modulating motor controller, a two-point motor controller, and a thermal switch or switch like device that is operative to switch control of the motor from the modulating motor controller used during normal operation, to the two-point motor controller during a fire and smoke condition. The damper actuator provides an automatic and permanent disabling (by-passing) of the modulating motor controller functions the first time a pre-determined temperature level (switch point) is reached via the thermal switch or switch like device. Once the modulating motor controller is disabled, the actuator no longer supports the advanced motor control functions (i.e. the modulating control).