Siemens SINAMICS G120 Manual page 239

p1960 Rotating measurement selection / Rot meas sel
Access level: 3
Can be changed: T
Units group: -
Min
0
Description: Sets the rotating measurement.
The rotating measurement is carried out after the next power-on command.
The setting possibilities of the parameter depend on the open-loop/closed-loop control mode (p1300).
p1300 < 20 (U/f open-loop control):
It is not possible to select rotating measurement or speed controller optimization.
p1300 = 20, 22 (encoderless operation):
Only rotating measurement or speed controller optimization can be selected in the encoderless mode.
Value: 0:
1:
3:
Dependency: Before the rotating measurement is carried out, the motor data identification routine (p1900, p1910, r3925) should
have already been done.
When selecting the rotating measurement, the drive data set changeover is suppressed.
Refer to: p1300, p1900, p1959
Danger: For drives with a mechanical system that limits the distance moved, it must be ensured that this is not reached dur-
ing the rotating measurement. If this is not the case, then it is not permissible that the measurement is carried out.
Notice: To permanently accept the determined settings they must be saved in a non-volatile fashion (p0971).
Note: When the rotating measurement is activated, it is not possible to save the parameters (p0971).
Parameter changes are automatically made for the rotating measurement (e.g. p1120); this is the reason that up to
the end of the measurement, and if no faults are present, no manual changes should be made.
The ramp-up and ramp-down times (p1120, p1121) are limited, for the rotating measurement, to 900 s.
p1961 Saturation characteristic speed to determine / Sat_char n determ
Access level: 3
Can be changed: U, T
Units group: -
Min
26 [%]
Description: Sets the speed to determine the saturation characteristic.
The percentage value is referred to p0310 (rated motor frequency).
Dependency: Refer to: p0310, p1959
Refer to: F07983
Note: The saturation characteristics should be determined at an operating point with the lowest possible load.
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 01/2011
Inhibited
Rotating measurement in encoderless operation
Speed controller optimization in encoderless operation
Calculated: -
Scaling: -
Unit selection: -
Max
3
Calculated: -
Scaling: -
Unit selection: -
Max
75 [%]
Parameters
List of Parameters
Data type: Integer16
Data set: -
Factory setting
0
Data type: FloatingPoint32
Data set: -
Factory setting
40 [%]
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