Abstract: There is described a system and method for active fault detection of an HVAC system and its associated mechanical equipment comprising building automation controllers and a remote device. A request for active fault detection of controllers of a building automation system (“BAS”) network is received. A passive test associated with each controller is executed by analyzing the controller via read-only access to operations of the controller. The passive test includes identifying a fault condition and a work item associated with the controller or a mechanical device connected to the controller. A full range full range active test based on the fault condition and the work item associated with each controller is executed by analyzing the controller via direct command access to the operations of the controller. A controller function associated with the request for active fault detection of the controllers is performed in response to executing the full range active test.

Abstract: A system, process, and method for modeling a building automation system is provided that permits a control program to easily and efficiently add field devices, gather data from, and provide data to field devices, iterate though all field devices in a hierarchical structure, poll the field devices, evaluate the results, and react accordingly.

Abstract: A system, process, and method for modeling a building automation system is provided that permits a control program to easily and efficiently add field devices, gather data from, and provide data to field devices, iterate though all field devices in a hierarchical structure, poll the field devices, evaluate the results, and react accordingly.

Abstract: A system for providing a simulated window utilizing environmental controls operable within a building automation system is disclosed. The system includes a building automation network deployed within a structure, a plurality of environmental controls in communication with the building automation network, where the plurality of automation controls are configured to control one or more environmental conditions within a space defined within the structure, a controller in communication with the plurality of environmental controls via the building automation network. The controller is configured to execute a first environmental control program to drive at least one of the plurality of environmental controls to a set point, and execute a transient environmental control program to increase an output of at least one of the plurality of environmental controls relative to the first environmental control program.

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 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: An apparatus and method is provided for spin coating films on a surface. The apparatus includes a chamber capable of being closed to the atmosphere, a spinnable member within the chamber capable of supporting the surface and a pump capable of reducing the pressure within the chamber. The method includes depositing a liquid on the surface, reducing the pressure in the vicinity of the surface and spinning the surface.