Abstract: A controller with configurable connections between data processing components that is optimized to provide a particular function such as temperature control is provided. In one embodiment, the controller includes a number of configurable inputs and outputs that may be used with digital and/or analog signals. The controller includes a data processor with a plurality of data processing components including a first and a second loop control function. The inputs and outputs which are configurable to the loop control functions are defined as a set of allowed inputs and outputs for each of the loop control functions. The set of allowed inputs and outputs for the first loop control function is a subset of the set of allowed inputs and outputs for the second loop control function.

Abstract: A pressurization control system configured to regulate air pressure with a space includes an air supply source fluidly coupled to a damper, a room controller configured to provide a control signal to the damper. The room controller includes a flow controller configured to generate a flow feedback signal, and a pressure controller configured to generate a pressure feedback signal, wherein the room controller is configured to receive flow and pressure feedback signals and generate the control signal based on one or more of the received flow and pressure feedback signals.

Abstract: A device driver for a system controller having a plurality of pre-programmed controller operating functions for controlling at least one device operatively connected to the system controller. The device driver may set an operating mode of the device from a plurality of predetermined device operating modes, select the device operating mode in accordance with one of the controller operating functions, and define the select controller operating functions based on user specified predetermined system operating modes.

Abstract: A controller for controlling a plurality of end devices in a control network includes a space controller for monitoring and receiving data from a space being maintained by the controller, a supervisory controller in communication with the space controller and a device driver. The device driver includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: A device driver for a network device controller for selectively controlling an end device in a control network includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: A device driver for a network device controller for selectively controlling an end device in a control network includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: A device driver for a network device controller for selectively controlling an end device in a control network includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: A device driver for a network device controller for selectively controlling an end device in a control network includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: A fume hood controller and method which compensates for resistance to air flow through a by-pass opening that exists due to a grille or louvre overlying the by-pass opening.

Abstract: A dual-duct HVAC system for providing a desired comfort level in a room, includes a controller that carries out a simple operation that determines the total open damper positions for dual dampers in a dual duct system to effect a desired air flow. Using the total open damper position information as damper control information, the controller also determines a relative damper position difference required between the two dampers to effect a desired temperature level while also meeting the air flow requirement as determined from the total open damper position information. The combination of the total open damper position information and the relative damper position difference is used as control information to control both dampers. Preferably, the controller gives priority of air flow control over temperature control by determining a valid damper position difference range for use in conjunction with the total open damper position information.

Abstract: A control system for a full time four wheel drive vehicle having a transfer case including a planetary gear differential and an electromagnetically actuated clutch assembly for biasing torque between the front and rear drive wheels in response to signals from the control system. The control system includes apparatus for detecting wheel slip and a device, responsive to the detection of wheel slip for calculating a maximum torque level to be established by the clutch assembly as a function of the total torque delivered to the transfer case and for programming clutch torque application over a predetermined time period and in a manner biasing torque through the differential to eliminate wheel slip.