Function modules
8.14 Advanced Position Control (including Active Vibration Suppression)
Drive functions
594 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Overview of the functions integrated in APC
The APC function module can be subdivided into 4 main subfunctions:
● Active Vibration Suppression (APC without sensor on the load side) (Page 597):
– Rugged function to dampen oscillation.
– Does not require a direct measuring system
● APC with encoder combination and differential position feedback (Page 604):
– Influencing the speed controller loop. The speed control response can be improved
(e.g. by increasing the speed controller gain).
– Requires a direct measuring system.
– 2 functions are involved, which can be advantageously used together.
● APC with acceleration feedback (Page 609):
– Requires a direct measuring system.
– Uses the acceleration - measured using the direct measuring system - to dampen
oscillation.
– An external acceleration sensor can be used instead of measuring the acceleration
using a direct measuring system.
● APC with load velocity control (Page 616):
– Requires a direct measuring system.
– P control of the velocity at the direct measuring system.
● The "Advanced Position Control" (APC, r0108.7) function module for SINAMICS S120 is
only available for servo control.
● For some functions integrated in the APC, a 2nd measuring system is required. A more
detailed description of the associated preconditions is documented in the description of
the various subfunctions.
● Based on experience, frequencies of up to 100 Hz can be influenced by APC. Whether an
oscillation can be influenced depends on how the mechanical system affects the closed-
control - or how the speed controller loop was set.
● For all functions of the "Advanced Position Control" function module, including "Active
Vibration Suppression", the license: "Active Vibration Suppressions (APC/AVS)" is
required.
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