Danaher Motion SuperDrive ACS24 Series, User Manual

Page: 58 / 99

Configuration & control of the AC SuperDrive
26.04.2005
6.8.1 T
UNING
O
F FLUX CONTROL
For efficiency, performance and protection of the motor, these parameters must be correct.
Danaher Motion can provide support and assistance in optimizing these parameters for the
application.
6.9 S
LIP AND STATOR FREQUENCY ESTIMATION
The Slip Speed and the Stator Frequency is estimated in the Slip and Stator Frequency
Estimation. The Slip Speed is computed from the Slip Gain and the Torque Current as shown in
Figure 27 . The Stator Frequency that is integrated in the Current Control to get the
Transformation Angle is computed as the sum of the Actual Speed (electrical) and the Slip
Speed.
Figure 27. Slip and Stator Frequency Estimation.
6.9.1 P
ARAMETERS AND VARIABLES
The Number of Motor Poles is the only parameter that is configurable in the Slip and Stator
Frequency Estimation (
Table 20 ).
Index Sub-Index Name Description
2070h 8 Number of Motor Poles Number of motor poles from motor nameplate.
Table 20. Slip and Stator Frequency Estimation - Parameter
In Table 21 the object index of the variable Slip Speed (read only) that is accessible via
CANopen is described.
Index Sub-
Index Name Description
2070h 11 Slip Speed Difference between rotor speed and stator speed in rpm
(mechanical difference speed).
Table 21. Slip and Stator Frequency Estimation - Variable
Item No.
89Y05120A
User's Guide 1.0
58