Calculating The Energy Saving For Fluid Flow Machines - Siemens SINAMICS G115D Operating Instructions Manual

The reduced flux in the motor partial load range results in higher efficiency.
Parameters
The converter calculates the parameters for the thermal motor model based on the motor data
that has been set – and the motor data identification.
Efficiency optimization, method 2
Parameter
p1401.14
p1570[0...n]
p3315[0...n]
p3316[0...n]
Efficiency optimization, method 1
Parameter
p1570[0...n]
p1580[0...n]
7.29

Calculating the energy saving for fluid flow machines

Overview
Fluid flow machines, which mechanically control the flow rate using valves or throttle flaps,
operate with a constant speed corresponding to the line frequency.
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
7.29 Calculating the energy saving for fluid flow machines
Description
Flux control configuration
CO: Flux setpoint [%]
Efficiency optimization 2 minimum
flux limit value [%]
Efficiency optimization 2 maxi‐
mum flux limit value [%]
Description
CO: Flux setpoint [%]
Efficiency optimization [%]
Advanced commissioning
Setting
1 signal: Efficiency optimization 2 active
Factory setting: 0000 0000 0000 0110 bin
Sets the flux setpoint referred to rated motor flux.
Factory setting: 100
Sets the minimal limit value for the calculated op‐
timum flux.
Factory setting: 50
Sets the maximum limit value for the calculated
optimum flux.
Factory setting: 110
Setting
Sets the flux setpoint referred to rated motor flux.
Factory setting: 100
0 %: Efficiency optimization is deactivated.
100 %: In no-load operation, the converter reduces
the flux setpoint to 50% of the rated motor flux.
The factory setting depends on the converter.
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