Siemens SINAMICS G120C USS/MB Operating Instructions Manual page 249

Parameter
p1130
p1131
p1134
p1135
p1136
p1137
You can find more information in function diagram 3070 and in the parameter list of the List
Manual.
Setting the extended ramp-function generator
Procedure
Proceed as follows to set the extended ramp-function generator:
1. Enter the highest possible speed setpoint.
2. Switch on the motor.
3. Evaluate your drive response.
– If the motor accelerates too slowly, then reduce the ramp-up time.
– If the motor accelerates too fast, then extend the ramp-up time.
– Increase the initial rounding if the acceleration is jerky.
– We recommend that you set the final rounding to the same value as the initial rounding.
4. Switch off the motor.
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
Description
Ramp-function generator initial rounding time (factory setting: 0 s)
Initial rounding for the extended ramp-function generator. The value applies for ramp
up and ramp down.
Ramp-function generator final rounding time (factory setting: 0 s)
Final rounding for the extended ramp-function generator. The value applies for ramp
up and ramp down.
Ramp-function rounding type (factory setting: 0)
0: Continuous smoothing
1: Discontinuous smoothing
OFF3 ramp-down time (factory setting: 0 s)
The quick stop (OFF3) has its own ramp-down time.
OFF3 initial rounding time (factory setting: 0 s)
Initial rounding for OFF3 for the extended ramp-function generator.
OFF3 final rounding time (factory setting: 0 s)
Final rounding for OFF3 for the extended ramp-function generator
An excessively short ramp-up time means that the motor will reach its current limiting
when accelerating, and will temporarily not be able to follow the speed setpoint. In this
case, the drive exceeds the set time.
Advanced commissioning
6.17 Setpoint calculation
249