Advanced Position Control (Including Active Vibration Suppression) - Siemens SINAMICS S120 Function Manual

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Function modules

9.14 Advanced Position Control (including Active Vibration Suppression)

Advanced Position Control (including Active Vibration Suppression)

● The "Advanced Position Control" (APC, r0108.7) and "Active Vibration Suppression (AVS/

APC-ECO)" (APC, r0108.19) function modules for SINAMICS S120 are only available for

servo drives.

● Several APC functions require that a 2nd measuring system is used. Additional information

is provided in the description of the various subfunctions.

● Frequencies of up to 100 Hz can be influenced by APC. Whether oscillation can be

influenced also depends on the following conditions:

– How does the mechanical system influence the closed-loop control?

– How was the control loop set?

● For all functions of the "Advanced Position Control" function module, including "Active

Vibration Suppression", license: "Active Vibration Suppressions (APC/AVS)" is required.

Function description

Uncontrolled movement of the drive as a result of incorrect parameter assignment

Incorrect parameterization of the APC results in instability of the speed and position

controllers. As a consequence, uncontrolled drive motion can occur that may result in death

or serious injury.

● Ensure that the limits are correctly parameterized.

The "Advanced Position Control" (APC) function module provides closed-loop control-related

functions to actively dampen mechanical oscillations. The function actively responds to

measured oscillations using an appropriate manipulated variable. The motor moves to

compensate for the oscillation. If the oscillation frequency changes, e.g. because of the axis

loading or mechanical changes, APC is also effective for the changed frequency.

APC functions are calculated in the speed control loop.

APC is not a passive position setpoint filter, as mechanical oscillations are actively dampened

based on a closed-loop control strategy.

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Drive functions