Siemens SINAMICS G115D Operating Instructions Manual page 274

Advanced commissioning
7.18 Setpoint processing
Parameter
p1131[0...n]
p1134[0...n]
p1135[0...n]
p1136[0...n]
p1137[0...n]
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
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.
– In most applications, it is sufficient when the final rounding is set to the same value as the
272
Description
Ramp-function generator, final
rounding-off time [s]
Ramp-function generator, round‐
ing-off type
OFF3 ramp-down time [s]
OFF3 initial rounding-off time [s]
OFF3 final rounding-off time [s]
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.
In the case of a permanent magnet synchronous motor, initial rounding can prevent the
motor from tilting during startup.
initial rounding.
Setting
Sets the final rounding-off time for the extended
ramp generator.
Factory setting: 0
Sets the smoothed response to the OFF1 command
or the reduced setpoint for the extended ramp-
function generator.
0: Continuous smoothing (factory setting)
1: Discontinuous smoothing
Sets the ramp-down time from the maximum
speed down to zero speed for the OFF3 command.
Factory setting: 0
Sets the initial rounding-off time for OFF3 for the
extended ramp generator.
Factory setting: 0
Sets the final rounding-off time for OFF3 for the
extended ramp generator.
Factory setting: 0
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA