Siemens SINAMICS G120D List Manual page 226

Parameters
List of parameters
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
Access level: 3
Can be changed: U, T
Units group: 3_1
Min
0.00 [rpm]
Description: Sets the speed to change over the motor model for operation with encoder.
Dependency: Refer to: p1756
p1753[0...n] Motor model changeover speed hysteresis operation with encoder /
MotMod n_chgovHysE
Access level: 3
Can be changed: U, T
Units group: -
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.
p1755[0...n] Motor model changeover speed encoderless operation / MotMod n_chgSnsorl
Access level: 3
Can be changed: U, T
Units group: 3_1
Min
0.00 [rpm]
Description: Sets the speed to change over the motor model to encoderless operation.
Dependency: 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.
On the other hand, very low changeover speeds can negatively impact the stability.
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
Access level: 3
Can be changed: U, T
Units group: -
Min
0.0 [%]
Description: Sets the hysteresis for the changeover speed of the motor model for encoderless operation.
Dependency: Refer to: p1755
Note: The parameter value refers to p1755. Extremely small hystereses can have a negative impact on the stability in the
changeover speed range, and very high hystereses in the standstill range.
1-226
Calculated: p0340 = 1,3
Scaling: -
Unit selection: p0505
Max
210000.00 [rpm]
Calculated: p0340 = 1,3
Scaling: -
Unit selection: -
Max
90.0 [%]
Calculated: p0340 = 1,3
Scaling: -
Unit selection: p0505
Max
210000.00 [rpm]
Calculated: p0340 = 1,3
Scaling: -
Unit selection: -
Max
95.0 [%]
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
210000.00 [rpm]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
0.0 [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
210000.00 [rpm]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 6730, 6731
Factory setting
50.0 [%]