Gain Switching - Siemens SINAMICS V90 Operating Instructions Manual

Tuning

9.8 Gain switching

Step Description
③
Set the suppression frequency by p31585.
④
Set damp of the filter by p31586.
⑤
Set control mode for the drive by p29003.
⑥
Enable the vibration suppression function by
p29035.
⑦
Set the drive to servo on status.
9.8 Gain switching
Note
The Gain Switching function is not available in T mode (torque control mode).
The function of auto-tuning must be disabled so that the function of gain switching can be
available.
With this function, you can:
● increase the gains during servo lock and decrease gains to reduce noise during rotation.
● increase the gains during settling to shorten the stop settling time.
● switch between two groups of gains using an external signal (G-CHANGE) to ensure
stability of the servo system because the load inertia moment ratio varies greatly during a
stop (for example, a large load is mounted on a carrier).
Selection of a gain switching mode
Five gain switching modes in total are available:
● Gain switching disabled
● Gain switching using digital input signal (G-CHANGE)
● Gain switching using position deviation
● Gain switching using position setpoint frequency
● Gain switching using actual speed
264
Comment
You can set the suppression frequency from 0.5 Hz to
62.5 Hz.
You can set the damp from 0 to 0.99.
Set p29035 = 1 to activate the function.
Operating Instructions, 09/2015, A5E36037884
SINAMICS V90, SIMOTICS S-1FL6