SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual, Page: 215 / 260

09/08
Operating Instructions ACU
213
16.5.6.1 Limitation of Modulation Controller
The output signal of the modulation controller is the internal reference flux. The con-
troller output and the integrating part are limited via the parameter
Reference Imr
lower limit
755 or the product of
Rated magnetizing current
716 and
Reference flux
717
. The magnetizing current parameter forming the upper limit is to be set to the
rated figure of the machine. For the lower limit, select a value which also builds up
an adequate flux in the machine in the field weakening area. The limitation of the
control deviation at the output of the modulation controller prevents a possible oscil-
lation of the control loop in the case of load surges. The parameter
Control deviation
limitation
756 is stated as an absolute value and acts both as a positive and a nega-
tive limit.
Parameter Settings
No. Description Min. Max. Fact. sett.
755 Reference Imr lower limit
0.01
⋅
I
FUN
ü
⋅
I
FUN
0.01
⋅
I
FUN
756 Control deviation limitation 0.00 % 100.00 % 10.00 %
Operating Instructions ACU 213 09/08