Motor Model Changeover Speed Operation With Encoder; Motor Model Changeover Speed Hysteresis Operation With Encoder; Flux Angle Difference Smoothing Time / Angle Diff T_Smth - Siemens SINAMICS G150 Manual

Re bit 18:
Displays the status when enabling the differential current feedback in the current model for operation with encoder.
The function is automatically enabled with p1784 > 0 or p1731 > 0. The feedback is used for a rugged change
between the current model and complete machine model with active rugged model feedback and combination
current.
Re bit 19:
Displays the currently active stator circuit feedback in current model operation.
Re bit 20:
Displays the currently effective increase of the changeover limits by the value p1749 * p1755.
Re bit 21:
For a blocked synchronous motor, the speed ramp-function generator is held in the open-loop speed controlled
operating range if the torque setpoint reaches the torque limit and the speed is less than the threshold value in
p2175.
p1752[0...n] Motor model changeover speed operation with encoder / MotMod n_chgov enc
VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL
Min
0.00 [rpm]
Description: Sets the speed to change over the motor model for operation with encoder.
Dependency: In U/f characteristic mode the parameter is of no significance.
Using the friction characteristic for operation with encoder:
When changing the motor model changeover speed p1752, the points along the friction characteristic should be
recalculated (p0340 = 5) and the friction characteristic recorded again (p3845). For slight changes, only the
associated friction characteristic points must be recorded (see p3844).
Refer to: p1756
p1753[0...n]

Motor model changeover speed hysteresis operation with encoder /

MotMod n_chgovHysE
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 [%]
Description: Sets the hysteresis for the changeover speed of the motor model for operation with speed encoder.
Dependency: Refer to: p1752
Note: The value refers to p1752. In the case of separately excited synchronous motors, the lower hysteresis value is
calculated with p1752 * p1753; in the case of all other types of motor, p1752 * (1 - p1753) is used.
p1754[0...n]

Flux angle difference smoothing time / Angle diff T_smth

VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: ASM, REL
Min
0.1 [ms]
Description: Sets the smoothing time constant to filter the main flux angle difference from the voltage and current models.
The filtered value is included in the calculation of the total flux angle.
PESM: Sets the smoothing time constant for the angular difference display between motor model and encoder.
Note: In the case of a separately excited synchronous motor and sensorless vector control, the parameter must be set to
the minimum value to improve motor model changeover.
SINAMICS G130/G150
List Manual (LH2), 04/2014, A5E03263479A
Calculated: CALC_MOD_REG
Dyn. index: DDS, p0180
Units group: 3_1
Scaling: -
Max
210000.00 [rpm]
Calculated: CALC_MOD_REG
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
90.0 [%]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10000.0 [ms]
2 Parameters
2.2 List of parameters
Access level: 3
Func. diagram: -
Unit selection: p0505
Expert list: 1
Factory setting
210000.00 [rpm]
Access level: 3
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
0.0 [%]
Access level: 3
Func. diagram: 6733
Unit selection: -
Expert list: 1
Factory setting
5.0 [ms]
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