Siemens SINAMICS G120 Operating Instructions Manual page 258

Functions
8.13 Setpoint channel
programmed. This is especially important for applications (e.g. transporting or pumping
liquids or for cranes) which require an especially "soft", jerk-free acceleration and braking.
If the OFF1 command is initiated while the motor is accelerating, then rounding-off can be
activated or deactivated using parameter P1134 (see figure below). These rounding-off times
are defined using parameters P1132 and P1133.
Figure 8-44
In addition to the rounding-off times, the ramp-function generator can be influenced using
external signals. The ramp-function generator provides the following functionality using BICO
parameters P1140, P1141 and P1142 (see table below).
The ramp-function generator itself is enabled after the pulses have been enabled (inverter
enable) and after the excitation time has expired (P0346). After limiting to the maximum
speeds for the positive and negative directions of rotation (ｱP1082 or 0 Hz for the direction of
rotation inhibit) the setpoint speed for the control is obtained (r1170).
While the V/f characteristic operates up to 650 Hz, the control (vector mode) is limited to a
maximum frequency of 200 Hz (r1084).
8-62
Rounding-off after an OFF1 command
Operating Instructions, 11/2006, A5E00766042B AA
Control Units CU240S