Siemens SINAMICS S120 Function Manual page 79

● Final rounding FR p1131[0...n]
● Effective ramp-up time
● Effective ramp-down time
● Set ramp-function generator
● Select ramp-function generator rounding type p1134[0...n]
● Ramp-function generator configuration, deactivate rounding at zero point p1151[0...n]
● Freezing of the ramp-function generator using p1141 (not in jog mode r0046.31 = 1)
Scaling of the up ramp and the down ramp
In order to being able to enter the parameters for the ramp-up times of p1120 and p1121 to
cyclic PROFIdrive telegrams, they are scalable.
● Using p1138[0...n], the signal source for scaling the ramp-up time p1120[0...n] of the
● Using p1139[0...n], the signal source for scaling the ramp-down time p1121[0...n] of the
The ramp times can be changed independently of one another in a cyclic PROFIdrive
telegram. If the ramp-up time and the ramp-down time are to be changed together, then the
scaling factor transferred in the PROFIdrive telegram is connected to both connectors.
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Tup_eff = Tup + (IR/2 + FR/2)
Tdn_eff = Tdn + (IR/2 + FR/2)
– OFF3 ramp-down
– OFF 3 ramp-down time p1135[0...n]
– OFF 3 initial rounding p1136[0...n]
– OFF 3 initial rounding p1137[0...n]
– Setting value ramp-function generator p1144[0...n]
– Signal, set ramp-function generator p1143[0...n]
– p1134 = "0": continuous smoothing; rounding is always active. Overshoots can occur.
If the setpoint changes, final rounding is carried out and then the direction of the new
setpoint is adopted.
– p1134 = "1": discontinuous smoothing; for a setpoint change, the change is
immediately made to the direction of the new setpoint.
ramp-function generator is set.
ramp-function generator is set.
Extended setpoint channel
2.9 Ramp-function generator
77