The ramp-up and ramp-down times each refer to the maximum speed (p1082).
Note
If rounding times are too long, this can cause the setpoint to be overshot if the setpoint is
reduced abruptly during ramp-up.
Rounding is also effective in the zero crossover;
When the rotational direction is reversed, the ramp-function generator output is reduced to zero
using the following parameters:
● The initial rounding
● The ramp-down time
● The final rounding
The new inverted setpoint is approached using the following parameters:
● The initial rounding
● The ramp-up time
● The final rounding
Rounding times that can be set separately are active in the event of a fast stop (OFF3). The
actual ramp-up/ramp-down times increase with active rounding.
Table 8-4 Parameter
Parameter Setting
P1115 Selection between simple ramp-function generator and extended ramp-function
generator
p1120 Ramp-function generator ramp-up time
p1121 Ramp-function generator ramp-down time
p1130 Ramp-function generator initial rounding-off time
p1131 Ramp-function generator final rounding-off time
p1135 OFF3 ramp-down time
p1136 OFF3 initial rounding-off time
p1137 OFF3 final rounding-off time
Note
The effective ramp-up time increases when you enter an initial and final rounding-off time.
Effective ramp-up time = p1120 + (0.5 x p1130) + (0.5 x p1131)
You can find additional information in function diagrams 3060 and 3070.
Operation
8.5 Functions
SINAMICS SM150 6SL3845-2NN41-8AD2
102 Operating Instructions Rev.201910281310 EXAMPLE
To Next Page
Loading...
