Siemens SINAMICS G120 List Manual page 174

2 Parameters
2.2 List of parameters
Note: 0/1 signal:
The ramp-function generator output is immediately (without delay) set to the setting value of the ramp-function
generator.
1 signal:
The setting value of the ramp-function generator is effective.
1/0 signal:
The input value of the ramp-function generator is effective. The ramp-function generator output is adapted to the
input value using the ramp-up time or the ramp-down time.
0 signal:
The input value of the ramp-function generator is effective.
p1144[0...n] CI: Ramp-function generator setting value / RFG setting value
Access level: 3
Can be changed: U, T
Unit group: -
Min
-
Description: Sets the signal source for the ramp-function generator setting value.
Dependency: The signal source for accepting the setting value is set using parameters.
Refer to: p1143
p1145[0...n] Ramp-function generator tracking intensity. / RFG track intens
Access level: 4
Can be changed: U, T
Unit group: -
Min
0.0
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 de-activated (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 de-activates 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:
- de-activate 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).
174
Calculated: -
Scaling: p2000
Unit selection: -
Max
-
Calculated: -
Scaling: -
Unit selection: -
Max
50.0
SINAMICS G120 Control Units CU240B-2/CU240E-2
Data type: U32 / FloatingPoint32
Dyn. index: CDS, p0170
Func. diagram: 3060, 3070
Factory setting
0
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 3080
Factory setting
0.0
List Manual (LH11), 01/2016, A5E33839529