Speed Pre-Control Balancing Time Constant / N_Prectr Bal T; Co: Speed Pre-Control To Motor Model / N_Prectrl Mot_Mod; Speed Controller Reference Model Natural Frequency / N_Ctrl Refmod Fn; Speed Controller Reference Model Damping / N_Ctrl Refmod D - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
p1429[0...n]

Speed pre-control balancing time constant / n_prectr bal T

VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL
Min
0.00 [ms]
Description: Sets the time constant (PT1) for symmetrizing the speed setpoint for active torque pre-control.
Dependency: In conjunction with p1428, this parameter can emulate the characteristics of how torque is established (dynamic
response of the closed current control loop).
For VECTOR (r0107) the following applies:
The parameter is only effective if the acceleration model is supplied using external acceleration signals (p1400.2 =
1). For p1400.2 = 0, time constant p1442 (or p1452 for sensorless vector control) is used.
Refer to: p1428, p1511
r1431

CO: Speed pre-control to motor model / n_prectrl mot_mod

VECTOR_G (n/M) Can be changed: -
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL
Min
- [rpm]
Description: Displays the speed setpoint for pre-controlling the motor model with sensorless vector control.
Note: With p1400.15 = 0 or encoderless torque control, the pre-control signal is kept continuously in the range of the
voltage model.
p1433[0...n]

Speed controller reference model natural frequency / n_ctrl RefMod fn

VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL
Min
0.0 [Hz]
Description: Sets the natural frequency of a PT2 element for the reference model of the speed controller.
Recommend.: The reference model is correctly set when the characteristics of p1439 (reference model output) and p1445 (actual
speed value) are virtually identical when the I component of the speed controller is disabled.
Dependency: Together with p1434 and p1435, the characteristics (in the time domain) of the closed-loop speed control (P) can be
emulated.
For VECTOR (r0107) the following applies:
The reference model is activated with p1400.3 = 1. For sensorless vector control (p1300 = 20) the reference model is
disabled in open-loop speed controlled operation (refer to p1755).
Refer to: p1434, p1435
p1434[0...n]

Speed controller reference model damping / n_ctrl RefMod D

VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL
Min
0.000
Description: Sets the damping of a PT2 element for the reference model of the speed controller.
364
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10000.00 [ms]
Calculated: -
Dyn. index: -
Units group: 3_1
Scaling: p2000
Max
- [rpm]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
8000.0 [Hz]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
5.000
List Manual (LH2), 04/2014, A5E03263479A
Access level: 3
Func. diagram: 5030, 5042,
5210, 6031
Unit selection: -
Expert list: 1
Factory setting
0.00 [ms]
Access level: 4
Func. diagram: 6030
Unit selection: p0505
Expert list: 1
Factory setting
- [rpm]
Access level: 3
Func. diagram: 5030, 6031
Unit selection: -
Expert list: 1
Factory setting
0.0 [Hz]
Access level: 3
Func. diagram: 5030, 6031
Unit selection: -
Expert list: 1
Factory setting
1.000
SINAMICS G130/G150