Siemens SINAMICS G120C DP User Manual

E󹪟ciency optimization, method 2
Generally, energy e󹪟ciency optimization method2 achieves a better e󹪟ciency than
method1.
We recommend that you set method2.
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Figure8-76 Determining the optimum 󹪞ux from the motor thermal model
Based on its thermal motor model, the converter continually determines - for the actual
operating point of the motor - the interdependency between e󹪟ciency and 󹪞ux. The
converter then sets the 󹪞ux to achieve the optimum e󹪟ciency.
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Figure8-77 Qualitative result of e󹪟ciency optimization, method 2
Depending on the motor operating point, the converter either decreases or increases the 󹪞ux
in partial load operation of the motor.
E󹪟ciency optimization, method 1
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Figure8-78 Reduce the 󹪞ux setpoint in the partial load range of the motor
Advanced commissioning
8.31E󹪟ciency optimization
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 353

Siemens SINAMICS G120C DP Specifications

General

Protection Rating	IP20
Frequency Range	0 to 650 Hz
Control Modes	V/f, sensorless vector control
Communication Interfaces	PROFIBUS DP
Ambient Temperature	-10 to +50 °C (without derating), -10 to +60 °C (with derating)
Overload Capacity	150 % rated current for 60 s, 200 % rated current for 3 s
Storage Temperature	-40 to +70 °C
Relative Humidity	5% to 95% (non-condensing)
Voltage Range	200 V to 240 V (±10%), 380 V to 480 V (±10%)
Output Voltage	0 V to Supply Voltage