Vacon NX series Applications Manual page 62

VACON · 62
Table 20: Motor control parameters, G2.6
Index Parameter
U/f curve midpoint
P2.6.7 *
voltage
Output voltage at
P2.6.8 *
zero frequency
Switching fre-
P2.6.9
quency
Overvoltage con-
P2.6.10
troller
Undervoltage con-
P2.6.11
troller
P2.6.12 Load drooping
3
Min Max Unit
0.00 100.00 %
0.00 40.00 %
1.0 Varies kHz
0 2
0 1
0.00 100.00 %
LOCAL/REMOTE CONTROL APPLICATION
Default Cust ID
100.00 605
Varies 606
Varies 601
1 607
1 608
0.00 620
TEL. +358 (0)201 2121 · FAX +358 (0)201 212 205
Description
If the value of
P2.6.3 is program-
mable, this param-
eter gives the mid-
dle point frequency
of the curve.
This parameter
gives the zero fre-
quency voltage of
the U/f curve. The
default value is dif-
ferent for different
unit sizes.
If you increase the
switching fre-
quency, the
capacity of the AC
drive reduces. To
reduce capacitive
currents in the
motor cable, when
the cable is long,
we recommend
that you use a low
switching fre-
quency. To reduce
the motor noise,
use a high switch-
ing frequency.
0 = Not used
1 = Used (no
ramping)
2 = Used (ramping
0 = Not used
1 = Used
The function ena-
bles a speed drop
as a function of
load. The load
drooping is given
as a percentage of
the nominal speed
at a nominal load.