Siemens SINAMICS G115D Operating Instructions Manual page 218

Advanced commissioning
6.15 Setpoint processing
Extended ramp-function generator
The ramp-up and ramp-down times of the extended ramp-function generator can be set
independently of each other. The optimal times depend on the application and can lie in the
range from a few 100 ms to several minutes.
Initial and final rounding permit smooth, jerk-free acceleration and braking.
The ramp-up and ramp-down times of the motor are increased by the rounding times:
• Effective ramp-up time = p1120 + 0.5 × (p1130 + p1131).
• Effective ramp-down time = p1121 + 0.5 × (p1130 + p1131).
Parameters for setting the extended ramp-function generator
Parameter
p1115
p1120[0...n]
p1121[0...n]
p1130[0...n]
p1131[0...n]
216
Description
Ramp-function generator selec-
tion
Ramp-function generator, ramp-
up time [s]
Ramp-function generator, ramp-
down time [s]
Ramp-function generator, initial
rounding-off time [s]
Ramp-function generator, final
rounding-off time [s]
Setting
Sets the ramp-function generator type.
0: Basic ramp-function generator
1: Extended ramp-function generator (factory
setting)
The ramp-function generator ramps-up the speed
setpoint from standstill (setpoint = 0) up to the
maximum speed (p1082) in this time.
Factory setting: 1
Sets the ramp-down time for the ramp-function
generator.
Factory setting: 1
Sets the initial rounding-off time for the extended
ramp generator. The value applies to ramp-up and
ramp-down.
Factory setting: 0
Sets the final rounding-off time for the extended
ramp generator.
Factory setting: 0
Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
SINAMICS G115D distributed drive