Advanced commissioning
7.18 Efficiency optimization
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
185
Efficiency optimization, method 1
Figure 7-42 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 inverter reduces the flux setpoint
linearly with the torque.
Figure 7-43 Qualitative result of efficiency optimization, method 1
The reduced flux in the motor partial load range results in higher efficiency.
Parameter
The inverter calculates the parameters for the thermal motor model based on the motor data
that has been set – and the motor data identification.
Table 7- 33 Efficiency optimization, method 2
Parameter
Description
Setting
p1401.14
Flux control configuration
1 signal: Efficiency optimization 2 active
Factory setting: 0
p1570
Flux setpoint [%]
Factory setting: 100 %
p3315
Efficiency optimization 2 flux
minimum limit value [%]
Minimum limit value for the calculated optimal flux
Factory setting: 50 %
p3316
Efficiency optimization 2
maximum flux limit value [%]
Maximum limit value for the calculated optimal flux
Factory setting: 110 %