Siemens SINAMICS G120 List Manual page 264

2 Parameters
2.2 List of parameters
Notice: After the motor data identification (p1910 > 0) has been selected, alarm A07991 is output and a motor data
identification routine is carried out as follows at the next switch-on command:
- current flows through the motor and a voltage is present at the drive converter output terminals.
- during the identification routine, the motor shaft can rotate through a maximum of half a revolution.
- however, no torque torque is generated.
Note: If there is a motor holding brake, it must be open (p1215 = 2).
To permanently accept the determined settings they must be saved in a non-volatile fashion (p0971).
When setting p1910, the following should be observed:
1. "With acceptance" means:
The parameters specified in the description are overwritten with the identified values and therefore have an influence
on the controller setting.
2. "Without acceptance" means:
The identified parameters are only displayed in the range r1912 ... r1926 (service parameters). The controller
settings remain unchanged.
3. For settings 27 and 28, the AVC configuration set using p1840 is active.
The switch-on command must remain set during a measurement and after the measurement has been completed,
the drive automatically resets it. The duration of the measurements can lie between 0.3 s and several minutes. This
time is mainly influenced by the motor size. At the end of the motor data identification, p1910 is automatically set to 0,
if only the stationary measurement is selected, then p1900 is also reset to 0, otherwise, the rotating measurement is
activated.
p1911 Phases to be identified number / Ph to ident qty
Access level: 4
Can be changed: T
Unit group: -
Min
1
Description: Sets the number of phases to be identified.
Value: 1:
2:
3:
Note: When identifying with several phases, the accuracy increases and also the time it takes to make the measurement.
r1912[0...2] Identified stator resistance / R_stator ident
Access level: 4
Can be changed: -
Unit group: -
Min
- [ohm]
Description: Displays the identified stator resistance.
Index: [0] = Phase U
[1] = Phase V
[2] = Phase W
r1913[0...2] Identified rotor time constant / T_rotor ident
Access level: 4
Can be changed: -
Unit group: -
Min
- [ms]
Description: Displays the identified rotor time constant.
Index: [0] = Phase U
[1] = Phase V
[2] = Phase W
264
1 phase U
2 phases U, V
3 phases U, V, W
Calculated: -
Scaling: -
Unit selection: -
Max
3
Calculated: -
Scaling: -
Unit selection: -
Max
- [ohm]
Calculated: -
Scaling: -
Unit selection: -
Max
- [ms]
SINAMICS G120 Control Units CU240B-2/CU240E-2
Data type: Integer16
Dyn. index: -
Func. diagram: -
Factory setting
1
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [ohm]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [ms]
List Manual (LH11), 01/2016, A5E33839529