Operating Instructions

SINAMICS G120 CU230P-2 Control Units
List Manual, 04/2018, A5E33838102
173
2 Parameters
2.2 List of parameters
Description: Sets the ramp-function generator tracking.
The output value of the ramp-function generator is tracked (corrected) corresponding to the maximum possible drive
acceleration.
The reference value is the deviation at the speed controller/velocity controller input that is necessary to ensure that
the motor accelerates at the torque/force limit.
Recommendation: If at least one speed setpoint filter/velocity setpoint filter is activated (p1414), then the ramp-function generator
tracking should be deactivated (p1145 = 0.0). When the speed setpoint filter is activated, the output value of the
ramp-function generator can no longer be tracked (corrected) corresponding to the maximum possible drive
acceleration.
For p1145 = 0.0:
This value deactivates the ramp-function generator tracking.
For p1145 = 0.0 ... 1.0:
Generally, these values are not practical. They cause the motor to accelerate below its torque limit. The lower the
selected value, the greater the margin between the controller and torque limit when accelerating.
For p1145 > 1.0:
The greater the value, the higher the permissible deviation between the speed setpoint and speed actual value.
Notice: If ramp-function generator tracking is activated and the ramp time is set too short, this can cause unsteady
acceleration.
Remedy:
- deactivate ramp-function generator tracking (p1145 = 0).
- increase the ramp-up/ramp-down time (p1120, p1121).
Note: In the U/f mode, ramp-function generator tracking is not active.
The speed difference is reduced if the integral component of the speed controller is not maintained when the torque
limit is reached (p1400.16 = 1).
Description: Sets the tolerance value for the status of the ramp-function generator (ramp-up active, ramp-down active).
If the input of the ramp-function generator does not change in comparison to the output by more than the entered
tolerance time, then the status bits "ramp-up active" and "ramp-down active" are not influenced.
Dependency: Refer to: r1199
Description: Displays the acceleration of the ramp-function generator.
Dependency: Refer to: p1145
p1145[0...n] Ramp-function generator tracking intensity. / RFG track intens
Access level: 4 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: - Unit selection: - Func. diagram: 3080
Min Max Factory setting
0.0 50.0 0.0
p1148[0...n] Ramp-function gen. tolerance for ramp-up and ramp-down active / RFG tol HL/RL act
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: 3_1 Unit selection: p0505 Func. diagram: 3070
Min Max Factory setting
0.000 [rpm] 1000.000 [rpm] 19.800 [rpm]
r1149 CO: Ramp-function generator acceleration / RFG acceleration
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2007 Dyn. index: -
Unit group: 39_1 Unit selection: p0505 Func. diagram: 3070
Min Max Factory setting
- [rev/s²] - [rev/s²] - [rev/s²]