Servo Control; Speed Controller - Siemens SINAMICS S120 Function Manual

Operating Modes

Servo control

3.1 Servo control
This type of closed-loop control enables operation with a high dynamic response
and precision for a motor with a motor encoder.
3.1.1

Speed controller

The speed controller controls the motor speed using the actual values from the
encoder (operation with encoder) or the calculated actual speed value from the
electric motor model (operation without encoder).
Properties
S Speed setpoint filter
S Speed controller adaptation
Note
Speed and torque cannot be controlled simultaneously. If speed control is
activated, this has priority over torque control.
Limits
The maximum speed p1082[D] is defined with default values for the selected motor
and becomes active during commissioning. The ramp-function generators refer to
this value.
Fig. 3-1
3-66
Speed limits
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition