Described is a measuring device for determining a process measurement variable, in particular a pressure, a filling level, and/or a limit level of a medium. The measuring device has a measuring module for recording a measured value of the process measurement variable, a communication module which is configured for data transmission to a communication device, in particular for transmission of a measurement signal correlating with the measured value to the communication device, an electrical load which is supplied with electrical power by means of a supply line of the measuring device. In this case, a switching element for activating and deactivating a power supply of the electrical load is arranged in the supply line, the measuring device is configured in order, based upon the switching element, to deactivate the power supply at least during a part of a transmission time and/or at least during a part of a measurement time.

The invention relates to a method for energy management of a process automation field device having a first module and at least a second module, wherein the field device is supplied with energy by a two conductor bus, wherein the first module, at least temporarily, consumes more energy than the two conductor bus continuously delivers, and an energy storer supplied by the two conductor bus is associated with the first module, wherein the second module is supplied continuously with energy by the two conductor bus, wherein operation of the first and second modules is so controlled that the second module has precedence over the first module and the first module is, in given cases, at least temporarily, not functional.

Disclosed herein is method and system for determining energy savings target for distributed sites of an entity. Energy profiles of the distributed sites in a service window are identified. Energy coefficients related to the energy profiles are determined by performing optimization of values of operational parameters of the distributed sites. Energy consumption within the service window is predicted using modular transformation of the energy coefficients. Finally, the energy savings target is determined based on modular transformation of the energy coefficients and current energy savings of the distributed sites. The present disclosure discloses a unique framework for defining a generic set of operational energy savings strategies that are applicable to each type of asset and service window of the distributed sites of an entity.

A microcontroller is operable to monitor power supply levels corresponding, respectively, to a first power supply (e.g., a main power supply) and a second power supply (e.g., a battery backup power supply). In one or more modes of operation, the same brownout detector in the microcontroller alternately monitors signals corresponding, respectively, to the first and second power supply levels.

The invention relates to a controller (1) comprising a control unit (2), which communicates with at least one input and/or output unit (10) via a data transmission channel (3, 6) for exchange of process data (P). The controller (1) has predetermined power saving process data (V) for power-saving states (En), which are associated with the input/output units (10), and is designed to access the predetermined power-saving process data (V) instead the exchanged process data (P) when in the power saving state.

One embodiment of the present disclosure describes a method executed by a processor. The method includes receiving a signal associated with a process system transitioning from a reduced energy mode to an active mode. The process system includes devices configured to operate based on data acquired by sensors. The method includes determining a difference between a set of actual data acquired by the sensors and a desired operating parameter of the process system. The method includes reducing the difference using a control algorithm based at least in part on a preload value (e.g., a predetermined value representative of data acquired by the sensors) retrieved from a memory device. The method includes determining a set of control signals based in part on the reduced difference and transmitting the set of control signals to the devices, thereby driving a current operating parameter of the process system toward the desired operating parameter.

Systems and methods are provided and include a variable frequency drive configured to drive a fan motor of an HVAC system to ventilate an indoor space, the HVAC system having a cooling assembly that includes at least one of an economizer and a compressor. A controller is configured to communicate with the variable frequency drive, receive at least one signal from an occupancy sensing device, determine whether the indoor space is less than fully occupied based on the at least one signal, and control the variable frequency drive to reduce a speed of the fan motor in response to determining that the indoor space is less than fully occupied.

A microcontroller is operable to monitor power supply levels corresponding, respectively, to a first power supply (e.g., a main power supply) and a second power supply (e.g., a battery backup power supply). In one or more modes of operation, the same brownout detector in the microcontroller alternately monitors signals corresponding, respectively, to the first and second power supply levels.

The invention relates to a method for controlling a technical apparatus in which a time profile (E(t)) for a power requirement (E) for the technical apparatus is ascertained over at least one period and an operating state of the technical apparatus is matched to the ascertained power requirement (E) on the basis of time.

The invention relates to a method for energy management of a process automation field device having a first module and at least a second module, wherein the field device is supplied with energy by a two conductor bus, wherein the first module, at least temporarily, consumes more energy than the two conductor bus continuously delivers, and an energy storer supplied by the two conductor bus is associated with the first module, wherein the second module is supplied continuously with energy by the two conductor bus, wherein operation of the first and second modules is so controlled that the second module has precedence over the first module and the first module is, in given cases, at least temporarily, not functional.