Siemens SINAMICS S120 Function Manual page 160

Operating Modes
Vector V/f control (r0108.2 = 0)
Table 3-19 V/f characteristic (p1300), continued
Parameter Meaning
values
5 Precise frequency
drives
6 Precise frequency
drives with
flux current control
(FCC)
19 Independent
voltage setpoint
3-160
Application / property
Characteristic that takes into account the technological
particularity of an application (e.g. textile applications):
a) whereby current limitation (Imax controller) only affects the
output voltage and not the output frequency, or
b) by disabling slip compensation
Characteristic that takes into account the technological
particularity of an application (e.g. textile applications):
a) whereby current limitation (Imax controller) only affects the
output voltage and not the output frequency, or
b) by disabling slip compensation
Voltage drops in the stator resistance for static/dynamic loads
are also compensated (flux current control FCC). This is
particularly useful for small motors, since they have a relatively
high stator resistance.
The user can define the output voltage of the Motor Module
independently of the frequency using BICO parameter p1330 via
the interfaces (e.g. analog input AI0 of a terminal board 30 –>
p1330 = r4055[0]).
SINAMICS S120 Function Manual, 03/2006 Edition
© Siemens AG 2006 All Rights Reserved