Setpoint Calculation; Overview Of Setpoint Processing - Siemens SINAMICS G120 Operating Instructions Manual

Low voltage converters chassis devices with cu240b-2 and cu240e-2
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6.16

Setpoint calculation

6.16.1

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 6-36
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2017, FW V4.7 SP6, A5E34259001B AD
Setpoint processing in the converter
Advanced commissioning
6.16 Setpoint calculation
259

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