Saving Energy - Siemens SITRANS LUT400 Operating Instructions Manual

A range of 0.5 meters is used to vary the setpoint. The randomly-selected setpoints are
always inside the ON and OFF setpoints.
①
②
③
④
7.7.6.5

Saving energy

Pumps can use different setpoints at different times of the day to account for variable energy
costs.
The following example illustrates high energy cost usage reduction and/or elimination by
using the SITRANS LUT400 Energy Savings function on a wet well (pump down application)
using pump 1.
Pre-requisite: enable Energy Savings function (set Enable (2.7.2.2.1.) (Page 189) =
Enabled)
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Random setpoint range
ON setpoint
Level setpoint variation
OFF setpoint
General Operation
7.7 Pump Control
115