Energy-Saving Display - Siemens SINAMICS S120 Function Manual

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Table of Contents

Basic functions

8.19 Energy-saving display

Energy-saving display

Through the tailored, speed-controlled operation, a drive can consume significantly less energy

than with a conventional closed-loop process control. This is especially true for continuous-flow

machines with parabolic load characteristics, such as centrifugal pumps and fans. Using the

SINAMICS S120 system enables control of the flow rate or the pressure by changing the speed

of the continuous-flow machine. As a consequence, the plant or system is controlled close to

its maximum efficiency over the complete operating range.

● Operation in vector control

Function description

The function determines the amount of energy used and compares it with the interpolated

energy required for a plant or system equipped with a conventional throttle control. The amount

of energy saved is calculated over the last 100 operating hours and is displayed in kilowatt

(kW). The calculation can be individually configured for each individual axis.

For an operating time of less than 100 hours, the potential energy-saving is interpolated up to

100 operating hours. To do this, you must manually enter the plant/system characteristic with

the conventional throttle control.

Plant/system characteristic

The factory setting is used as basis for the calculation if you do not enter the interpolation points

for your plant/system characteristic. The values of the factory setting can deviate from your

plant/system characteristic and result in an inaccurate calculation.

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Drive functions