Ramp-Function Generator - Siemens SINAMICS V90 Operating Instructions Manual

Control functions
7.5 Speed control (S)
Parameter settings
Parameter Value range
p29075 0 to 200
p29060 6 to 210000
DI configuration
Signal type Signal name
DI ZSCLAMP
Note
When p29003=4 and CMODE is "1", the drive is working in speed control mode. In this case
if ZSCLAMP is activated, the drive will switch to PTI control mode and PTI pulse input will
lead motor running under PTI control mode.
Note
For more information about the signal ZSCLAMP, refer to "DIs (Page 90)".
7.5.6

Ramp-function generator

The ramp-function generator is used to limit acceleration in the event of abrupt setpoint
changes and thus helps prevent load surges during drive operation.
The ramp-up time p1120 and ramp-down time p1121 can be used to set acceleration and
deceleration ramps separately. This allows a smoothed transition in the event of setpoint
changes.
The maximum speed p1082 is used as the reference value for calculating the ramp-up and
ramp-down times.
You can see the properties of the ramp-function generator from the diagram below:
202
Default Unit
200 rpm Zero speed clamp threshold
3000 % Maximum analog speed setpoint corresponding to 10 V
Pin assignment Setting
To be assigned
Description
1 When the motor speed setpoint is below zero speed
clamp threshold, the motor is locked.
0 No action
Operating Instructions, 09/2016, A5E36037884-002
Description
SINAMICS V90, SIMOTICS S-1FL6