Efficiency optimization, method 1
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Figure 6-95 Reduce the flux setpoint in the partial load range of the motor
The motor operates in partial load mode between no-load operation and the rated motor torque.
Depending on p1580, in the partial load range, the converter reduces the flux setpoint linearly
with the torque.
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Figure 6-96 Qualitative result of efficiency optimization, method 1
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.
Table 6-108 Efficiency optimization, method 2
Number Name Factory setting
p1401[D] Flux control configuration 0000 0000 0000
0110 bin
p1570[D] CO: Flux setpoint 100%
p3315[D] Efficiency optimization 2 minimum flux limit value 50%
p3316[D] Efficiency optimization 2 maximum flux limit value 110 %
Table 6-109 Efficiency optimization, method 1
Number Name Factory setting
p1570[D] CO: Flux setpoint 100%
p1580[D] Efficiency optimization 80%
Advanced commissioning
6.10 Energy saving
SINAMICS G120X converter
436 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
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