Motor Model Changeover Speed Encoderless Operation; Motor Model Changeover Speed Hysteresis Encoderless Operation; Motor Model W/O Enc. Op./Cl.-Loop Controlled Stab. Controller Kp - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
p1755[0...n] Motor model changeover speed encoderless operation / MotMod n_chgSnsorl
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 to encoderless operation.
Dependency: In U/f characteristic mode the parameter is of no significance.
Refer to: p1749, p1756
Notice: The changeover speed represents the steady-state minimum speed up to which the motor model can be used in
sensorless steady-state operation.
If the stability is not adequate close to the changeover speed, it may make sense to increase the parameter value.
Note: The changeover speed applies for the changeover between open-loop and closed-loop control mode.
p1756

Motor model changeover speed hysteresis encoderless operation /

MotMod n_chgov hys
VECTOR_G 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 encoderless operation. In the case of separately
excited synchronous motors, the lower hysteresis value is calculated with p1756 * p1755; in the case of all other
types of motor, p1755 * (1 - p1756) is used.
Dependency: In U/f characteristic mode the parameter is of no significance.
Refer to: p1755
Note: The parameter value refers to p1755.
In the case of separately excited synchronous motors, the lower hysteresis value is calculated with p1755 * p1756; in
the case of all other types of motor, p1755 * (1 - p1756) is used.
p1757[0...n] Motor model w/o enc. op./cl.-loop controlled stab. controller Kp / MotMod w/o enc Kp
VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: REL, FEM
Min
0.01
Description: Sets the gain of the transient response controller when the motor model changes over from open-loop controlled
operation to closed-loop controlled operation.
Note: Only for ASM and PSM in encoderless operation:
The settling range starts at 0.5 * p1755 * p1756.
For ASM it ends at p1755 * p1756 or at p1755, if p1759 is at the maximum value.
For PSM it always ends at p1755 * p1756.
420
Calculated: CALC_MOD_REG
Dyn. index: DDS, p0180
Units group: 3_1
Scaling: -
Max
210000.00 [rpm]
Calculated: CALC_MOD_REG
Dyn. index: -
Units group: -
Scaling: -
Max
95.0 [%]
Calculated: CALC_MOD_CON
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10.00
List Manual (LH2), 04/2014, A5E03263479A
Access level: 3
Func. diagram: -
Unit selection: p0505
Expert list: 1
Factory setting
210000.00 [rpm]
Access level: 3
Func. diagram: 6730, 6731,
6732, 6733
Unit selection: -
Expert list: 1
Factory setting
50.0 [%]
Access level: 4
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
0.70
SINAMICS G130/G150