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PROFIenergy is a profile of the PROFINET communications protocol that allows the power consumption of automation equipment in manufacturing (such as robot assembly cells, laser cutters and sub-systems such as paint lines) to be managed over a PROFINET network. It controls energy usage during planned and unplanned breaks in production. No external hard-wired systems are required. ==Background== The idea for a standardized energy efficiency profile came from Juergen Kuebler an employee of Mercedes-Benz and was motivated by the AIDA group of automotive manufacturers in Germany. AIDA companies comprise Audi, BMW, Mercedes-Benz, Porsche and VW. A PI Working Group set up to develop the new profile is about to publish the specification. The PI Working Group comprises ABB, AIT, Bosch, Danfoss, Hilscher, ifak, Lenze, Murr Elektronik, Phoenix Contact, SEW Eurodrive, SCA Schucker, Rexroth, Siemens, KUKA and WZL. PROFIenergy relies on three production elements working together: the controlling device in an automation network (usually a PLC, but it could be a supervisory system or dedicated energy management controller on the same network), the communications network (PROFINET), and the power consuming unit (which could be a single device or item of equipment, a cell or even a larger sub-system). The PROFIenergy switching mechanisms reside inside energy consumers. No additional hard-wiring is required. The controlling device transmits signals via PROFINET to say when production pauses will happen. These can be at known times, or in response to random conditions e.g. breakdowns. Each unit then decides how this information is to be handled. Equipment vendors implement an energy management strategy by embedding a software ‘agent’ in the equipment firmware. This responds to the PROFIenergy commands in ways that suit the equipment. For example, a production cell may need a conveyor to be slowed down before a robot can be put into ‘sleep’ mode. If the duration of a pause is long enough, perhaps the ECU can be completely disconnected. To be ready to restart on demand, its conveyor must be restarted in advance. Multi-level ‘sleep modes’ are also feasible. PROFIenergy can transmit power demand information back to the controller to support more sophisticated energy savings schemes, including peak load management. Other, non-electrical, energy-consuming equipment could also be managed. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「PROFIenergy」の詳細全文を読む スポンサード リンク
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