Sercos III Profile Reduces Energy Consumption

An energy conservation profile has been developed for the Sercos III real-time Ethernet communications system for controls, drives and decentralised peripherals. Announced by the Sercos vendor organisations, Sercos Energy reduces energy consumption in three areas. First, the permanent load at motor/machine standstill is reduced; second, energy consumption, depending on the process, is dynamically adjusted considering the target completion times and dates (partial load operation); and, third, energy is saved during processing by switching off components that are not required at a particular time or point in the process (partial machine operation).

Sercos Energy is an application layer profile that defines parameters for the reduction of energy consumption in a uniform and vendor-independent manner. The control reads out standard parameters of each Sercos Energy component via the Sercos III network, receiving status information and detailed consumption values.

Depending on the situation (scheduled or unscheduled breaks or machine components not needed in the current production process, for example), the control can switch connected components (drives, input/output and sensors) into energy-saving conditions up to complete shutdown, in a targeted manner, reducing energy consumption.

A working group consisting of several member companies of Sercos International has worked out a concept and a first draft of the energy profile specification. The final released specification will be available in June 2010. With its open, manufacturer-independent, Ethernet-based architecture, Sercos III is a universal bus for all automation solutions.


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