PROFIenergy is a standardised PROFINET application profile that allows controllers to switch PROFINET devices into an energy-saving state (Pause Mode) during planned stops (lunch break, weekend) and to wake them up just before production resumes, in order to optimise energy consumption.

PROFIenergy is defined as a PI profile aligned with IEC 61784-3-3 and provides several Pause Modes per device (graduated from light sleep to deep sleep), an announced Pause Time (e.g. 30 min for a lunch break), a wake-up command that triggers anticipated pre-heating so the equipment is ready on time, and energy values reporting instantaneous power and cumulative energy. Typical savings reach 10-25 % of factory consumption over planned stops, with strong support on drives, robots, conveyors and industrial lighting.

Coordinate the Pause Time announcement with the operations schedule rather than the calendar — production planners change the break window twice a quarter, and a hard-coded 12:00-12:30 will eventually cost more in restart time than it saves in energy.