Setpoint Calculation; Overview Of Setpoint Processing - Siemens SINAMICS G120D Series Operating Instructions Manual

Advanced commissioning

7.4 Setpoint calculation

7.4 Setpoint calculation
7.4.1

Overview of setpoint processing

The setpoint can be modified as follows using the setpoint processing:
● Invert setpoint to reverse the motor direction of rotation (reversing).
● Inhibit positive or negative direction of rotation, e.g. for conveyor belts, pumps or fans.
● Skip frequency bands to prevent mechanical resonance effects.
The skip frequency band at speed = 0 results in a minimum speed after switching on the
motor.
● Limit to a maximum speed to protect the motor and mechanical system.
● Ramp-function generator to accelerate and brake the motor with an optimum torque.
Figure 7-17
136
Setpoint processing in the converter
Converter with control units CU240D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB