Danaher Motion SuperDrive ACS24 Series, User Manual

Page: 56 / 99

Configuration & control of the AC SuperDrive
26.04.2005
6.7 F
LUX CONTROL
6.7.1 B
ASICS
In the Flux Control, the Slip Gain used in the Slip Frequency Estimation and the Magnetization
Current are computed as illustrated in
Figure 26 . The rotor flux in the motor is controlled via the
Magnetization Current. The Magnetization Current (i.e. the rotor flux) is kept constant up to the
Base Speed. Above the Base Speed, the Magnetization Current is reduced. Since the Slip Gain
is reciprocally proportional to the Magnetization Current, the Slip Gain is increased above Base
Speed. The Base Speed itself is proportional to the Dc Bus Voltage. It should also be observed
that the Slip Gain is compensated with the Motor Temperature.
Figure 26. Flux Control (Slip Gain and Magnetization Current control).
Item No.
89Y05120A
User's Guide 1.0
56