Siemens SINAMICS S120 Function Manual page 87

Example of speed setpoint step change
A rectangular step change can be applied to the speed setpoint via the speed set-
point step change measuring function. The measuring function has preselected the
measurement for the speed setpoint and the torque-generating current.
Fig. 3-14
Parameter overview
See Section "Speed controller".
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
K is optimum K
p_n p
overshoots
---->OK ---->not OK
Setting the proportional gain K
is too high, K is too low,
p
damped
transient response
---->OK, not optimum
p
Operating Modes
Servo control
3-87