Siemens SINAMICS G120 Operating Instructions Manual page 283

Table 6-49
Parameter
p1115 = 0
p1120
p1121
p1135
Changing the ramp-up and ramp-down times in operation
The ramping up and down time of the ramp-function generator can be changed during
operation. The scaling value can come, e.g. from the fieldbus.
Table 6-50
Parameter
p1138
p1139
Application example
In the following application example, the higher-level control sets the ramp-up and ramp-down
times of the inverter via PROFIBUS.
Figure 6-43
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Parameters for setting the ramp-function generator
Description
Ramp-function generator selection (factory setting: 1)
Select ramp-function generator:
0: Basic ramp-function generator
1: Extended ramp-function generator
Ramp-function generator, ramp-up time (factory setting: 10 s)
Accelerating time in seconds from zero speed up to the maximum speed p1082
Ramp-function generator, ramp-down time (factory setting: 10 s)
Braking time in seconds from the maximum speed down to standstill
OFF3 ramp-down time (factory setting: 0 s)
The quick stop (OFF3) has its own ramp-down time.
Parameters for setting the scaling
Description
Up ramp scaling (factory setting: 1)
Signal source for scaling the acceleration ramp.
Deceleration ramp scaling (factory setting: 1)
Signal source for scaling the deceleration ramp.
Application example for changing the ramp-function generator times in operation
Advanced commissioning
6.19 Setpoint calculation
281